TY  - JOUR
AU  - Mitrašinović, Aleksandar M.
AU  - Momčilović, Dejan B.
AU  - Odanović, Zoran
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7500
AB  - Assessing heat released only related to the formation of primary crystals provides results with a significantly higher sensitivity than a traditional assessment of undercooling value. In this work, two similar Ti5B1 master alloys (commercial and refined) are used for grain refinement of Al7Si4Cu aluminum alloy to assess narrow differences in heat release during primary crystallization. The heat released related to primary crystallization is 2.50 +/- 0.03, 3.16 +/- 0.12, and 7.92 kJ kg(-1) for samples treated with the refined master alloys, commercial master alloys, and sample solidified without grain refinement, respectively. The acquired results showed that the suggested method is more efficient in comparison with traditional metallographic or undercooling methods for the assessment of grain refining efficiency with the potential to extend the suggested approach on a wide range of metallic structures where solidification occurs by eutectic-type primary crystallization characteristics.
PB  - Springer India, New Delhi
T2  - Transactions of the Indian Institute of Metals
T1  - Assessment of Grain Size and Grain Refinement Efficiency by Calculation of Released Heat Attributed to Formation of Primary Aluminum Crystals During Solidification of Al7Si4Cu Alloy
EP  - 1922
IS  - 8
SP  - 1917
VL  - 74
DO  - 10.1007/s12666-021-02279-6
ER  - 

@article{
author = "Mitrašinović, Aleksandar M. and Momčilović, Dejan B. and Odanović, Zoran",
abstract = "Assessing heat released only related to the formation of primary crystals provides results with a significantly higher sensitivity than a traditional assessment of undercooling value. In this work, two similar Ti5B1 master alloys (commercial and refined) are used for grain refinement of Al7Si4Cu aluminum alloy to assess narrow differences in heat release during primary crystallization. The heat released related to primary crystallization is 2.50 +/- 0.03, 3.16 +/- 0.12, and 7.92 kJ kg(-1) for samples treated with the refined master alloys, commercial master alloys, and sample solidified without grain refinement, respectively. The acquired results showed that the suggested method is more efficient in comparison with traditional metallographic or undercooling methods for the assessment of grain refining efficiency with the potential to extend the suggested approach on a wide range of metallic structures where solidification occurs by eutectic-type primary crystallization characteristics.",
publisher = "Springer India, New Delhi",
journal = "Transactions of the Indian Institute of Metals",
title = "Assessment of Grain Size and Grain Refinement Efficiency by Calculation of Released Heat Attributed to Formation of Primary Aluminum Crystals During Solidification of Al7Si4Cu Alloy",
pages = "1922-1917",
number = "8",
volume = "74",
doi = "10.1007/s12666-021-02279-6"
}

Mitrašinović, A. M., Momčilović, D. B.,& Odanović, Z..Assessment of Grain Size and Grain Refinement Efficiency by Calculation of Released Heat Attributed to Formation of Primary Aluminum Crystals During Solidification of Al7Si4Cu Alloy. in Transactions of the Indian Institute of Metals
Springer India, New Delhi., 74(8), 1917-1922.
https://doi.org/10.1007/s12666-021-02279-6

Mitrašinović AM, Momčilović DB, Odanović Z. Assessment of Grain Size and Grain Refinement Efficiency by Calculation of Released Heat Attributed to Formation of Primary Aluminum Crystals During Solidification of Al7Si4Cu Alloy. in Transactions of the Indian Institute of Metals.74(8):1917-1922.
doi:10.1007/s12666-021-02279-6 .

Mitrašinović, Aleksandar M., Momčilović, Dejan B., Odanović, Zoran, "Assessment of Grain Size and Grain Refinement Efficiency by Calculation of Released Heat Attributed to Formation of Primary Aluminum Crystals During Solidification of Al7Si4Cu Alloy" in Transactions of the Indian Institute of Metals, 74, no. 8:1917-1922,
https://doi.org/10.1007/s12666-021-02279-6 . .

TY  - CONF
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan B.
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7497
AB  - The contact fatigue is a localized phenomenon that occurs in highlystressed local zone of the material under the loaded contact region and as such ishighly nonlinear problem. This phenomenon exists in almost all real mechanicalsystems with contact strains coupled with other sources of nonlinear behaviour.The improvements of existing procedures and methods for standard calculationof contact fatigue have a potential to give significant contribution to increaseaccuracy of calculation of life assessment, reliability and efficiency of complexmechanical systems. This paper gives the basic explanation of the Theory ofcritical distances and its application on direct estimation of fatigue crackinitiation in contact zones. Analysis of contact fatigue when the contact zonesare subjected to additional nonlinearities such as geometry manufacturingdeviations, geometry microscale-damages or nonlinear material characteristicsare presented in detail. Few different real multi-nonlinear problems are used foranalysis performing. The benefits of presented approach are discussed by detailanalysis of the obtained results, and could be based on the increasing accuracyof contact fatigue prediction considering all existing nonlinearities in loadedcontact zones of complex mechanical systems.
C3  - 2nd Conference on Nonlinearity, Belgrade
T1  - Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances
EP  - 47
SP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7497
ER  - 

@conference{
author = "Atanasovska, Ivana and Momčilović, Dejan B.",
abstract = "The contact fatigue is a localized phenomenon that occurs in highlystressed local zone of the material under the loaded contact region and as such ishighly nonlinear problem. This phenomenon exists in almost all real mechanicalsystems with contact strains coupled with other sources of nonlinear behaviour.The improvements of existing procedures and methods for standard calculationof contact fatigue have a potential to give significant contribution to increaseaccuracy of calculation of life assessment, reliability and efficiency of complexmechanical systems. This paper gives the basic explanation of the Theory ofcritical distances and its application on direct estimation of fatigue crackinitiation in contact zones. Analysis of contact fatigue when the contact zonesare subjected to additional nonlinearities such as geometry manufacturingdeviations, geometry microscale-damages or nonlinear material characteristicsare presented in detail. Few different real multi-nonlinear problems are used foranalysis performing. The benefits of presented approach are discussed by detailanalysis of the obtained results, and could be based on the increasing accuracyof contact fatigue prediction considering all existing nonlinearities in loadedcontact zones of complex mechanical systems.",
journal = "2nd Conference on Nonlinearity, Belgrade",
title = "Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances",
pages = "47-27",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7497"
}

Atanasovska, I.,& Momčilović, D. B..Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances. in 2nd Conference on Nonlinearity, Belgrade, 27-47.
https://hdl.handle.net/21.15107/rcub_machinery_7497

Atanasovska I, Momčilović DB. Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances. in 2nd Conference on Nonlinearity, Belgrade.:27-47.
https://hdl.handle.net/21.15107/rcub_machinery_7497 .

Atanasovska, Ivana, Momčilović, Dejan B., "Analysis of contact fatigue coupled with geometry and material nonlinearities by Theory of critical distances" in 2nd Conference on Nonlinearity, Belgrade:27-47,
https://hdl.handle.net/21.15107/rcub_machinery_7497 .

TY  - JOUR
AU  - Momčilović, Dejan B.
AU  - Hut, Nenad
AU  - Milović, Ljubica
AU  - Atanasovska, Ivana
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7496
AB  - Uprkos brojnim i skupim istraživanjima u oblasti zamora i loma kao i redovne kontrole gotovog proizvoda, prsline se javljaju svakodnevno u mnogim oblastima. Ovaj rad opisuje analizu otkaza spojnice lanca korišćene u konvejeru za transport cementa. Lančasti elevatori sa kašikom koriste spojnice za spajanje segmenata lanca i za vezivanje kašike za transport rasutog tereta. Površina kontakta između karike lanca i spojnice predstavlja jedno od najopterećenijih mesta na celom elevatoru. Tokom redovnog održavanja na upotrebljenim i novim spojnicama lanaca uočene su prsline u otvrdnutim termički obrađenim zonama. Radi povećanja otpornosti spojnica na habanje one se u oblasti kontakta sa karikom lanca termički obrađuju. Pojava prslina u novim nekorišćenim spojnicama pokrenula je ispitivanja sa ciljem da se utvrdi poreklo prslina na novim spojnicama. Pored ispitivanja uzroka nastanka ovih prslina u radu su navedeni predlozi mera za sprečavanje njihovog nastanka.
AB  - In spite of numerous and expensive research in the field of fatigue and fracture and regular control of end products, cracks occur every day in all fields of human activity. This paper describes failure analysis of chain brackets, used in conveyor systems for cement production. Chain type bucket elevators utilize chain brackets for joining segments of chain as well as for attaching brackets for bulk material transport. The contact zone between chain link and bracket is one of the most stressed in this elevator system. During regular maintenance, cracks are found on used and new brackets in the case hardened zone. Case hardening of the chain bracket is performed due to requirements for increased wear resistance of the chain link contact. The occurrence of cracks in new brackets raised the question regarding the origin of cracks and it is the main subject of this paper. This paper also suggests a solution for avoidance of cracks on chain brackets.
PB  - Integritet i vek konstrukcija, Beograd
T2  - Structural Integrity and Life
T1  - Analiza loma spojnice lanca
T1  - Failure analysis of chain bracket
EP  - 126
IS  - 2
SP  - 123
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7496
ER  - 

@article{
author = "Momčilović, Dejan B. and Hut, Nenad and Milović, Ljubica and Atanasovska, Ivana",
abstract = "Uprkos brojnim i skupim istraživanjima u oblasti zamora i loma kao i redovne kontrole gotovog proizvoda, prsline se javljaju svakodnevno u mnogim oblastima. Ovaj rad opisuje analizu otkaza spojnice lanca korišćene u konvejeru za transport cementa. Lančasti elevatori sa kašikom koriste spojnice za spajanje segmenata lanca i za vezivanje kašike za transport rasutog tereta. Površina kontakta između karike lanca i spojnice predstavlja jedno od najopterećenijih mesta na celom elevatoru. Tokom redovnog održavanja na upotrebljenim i novim spojnicama lanaca uočene su prsline u otvrdnutim termički obrađenim zonama. Radi povećanja otpornosti spojnica na habanje one se u oblasti kontakta sa karikom lanca termički obrađuju. Pojava prslina u novim nekorišćenim spojnicama pokrenula je ispitivanja sa ciljem da se utvrdi poreklo prslina na novim spojnicama. Pored ispitivanja uzroka nastanka ovih prslina u radu su navedeni predlozi mera za sprečavanje njihovog nastanka., In spite of numerous and expensive research in the field of fatigue and fracture and regular control of end products, cracks occur every day in all fields of human activity. This paper describes failure analysis of chain brackets, used in conveyor systems for cement production. Chain type bucket elevators utilize chain brackets for joining segments of chain as well as for attaching brackets for bulk material transport. The contact zone between chain link and bracket is one of the most stressed in this elevator system. During regular maintenance, cracks are found on used and new brackets in the case hardened zone. Case hardening of the chain bracket is performed due to requirements for increased wear resistance of the chain link contact. The occurrence of cracks in new brackets raised the question regarding the origin of cracks and it is the main subject of this paper. This paper also suggests a solution for avoidance of cracks on chain brackets.",
publisher = "Integritet i vek konstrukcija, Beograd",
journal = "Structural Integrity and Life",
title = "Analiza loma spojnice lanca, Failure analysis of chain bracket",
pages = "126-123",
number = "2",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7496"
}

Momčilović, D. B., Hut, N., Milović, L.,& Atanasovska, I..Analiza loma spojnice lanca. in Structural Integrity and Life
Integritet i vek konstrukcija, Beograd., 11(2), 123-126.
https://hdl.handle.net/21.15107/rcub_machinery_7496

Momčilović DB, Hut N, Milović L, Atanasovska I. Analiza loma spojnice lanca. in Structural Integrity and Life.11(2):123-126.
https://hdl.handle.net/21.15107/rcub_machinery_7496 .

Momčilović, Dejan B., Hut, Nenad, Milović, Ljubica, Atanasovska, Ivana, "Analiza loma spojnice lanca" in Structural Integrity and Life, 11, no. 2:123-126,
https://hdl.handle.net/21.15107/rcub_machinery_7496 .

TY  - THES
AU  - Otović, Milena
UR  - https://eteze.bg.ac.rs/application/showtheses?thesesId=8908
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:27264/bdef:Content/download
UR  - https://plus.cobiss.net/cobiss/sr/sr/bib/62073097
UR  - https://nardus.mpn.gov.rs/handle/123456789/21097
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6004
AB  - Ваздушни хладњаци се у термотехници и процесној техници често примењују уусловима када су температуре амбијенталног ваздуха јако високе и знатно више одтемпература усвојених у прорачунима, па није могуће одвести прорачунску количинутоплоте. Потребна топлотна снага се у таквим случајевима може достићи ако се околниваздух орошава (влажи) распршивањем воде на улазу у апарат, јер се тиме снижаватемпература ваздуха, па се температурна разлика повећава, као и размењена количинатоплоте. Појава слоја влаге на размењивачу топлоте кључно мења топлотне и струјнеперформансе оваквих апарата.Детаљнија анализа расположиве литературе показала је да радови у којима сеистражује проблематика размене топлоте и супстанције на површини оребреногразмењивача топлоте са напрскавањем воде нису бројни, те се доводи у питањемогућност реалне примене података доступних у литератури за потребе инжењерскихпрорачуна при експлоатацији оваквих апарата, односно коју методологију прорачунакоефицијената прелаза топлоте и влаге препоручити као релевантну у одређенимусловима.У овој докторској дисертацији испитивани су различити режими рада ваздушниххладњака са оребреним цевима при њиховом напрскавању водом на улазу у апарат.Експериментална истраживања рада предметних размењивача топлоте су спроведена насамостално пројектованој инсталацији, која је направљена и монтирана у оквирутоплотне подстанице Машинског факултета у Београду. Развој физичког и прорачунскогмодела, заснованог на истовременом транспорту топлоте и супстанције, битан је заодређивање и прорачун релевантних параметара рада размењивача топлоте. Применомтеорије сличности, уз одговарајуће статистичке методе, одређене су меродавнекритеријумске зависности за израчунавање пада притиска, као и коефицијената прелазатоплоте и супстанције, тј. одређени су изрази погодни за инжењерску праксу.Ова докторска дисертација представља наставак истраживања проблемапроналажења поуздане прорачунске процедуре за одређивање коефицијената прелазатоплоте, супстанције и трења за широк опсег Рејнолдсових бројева и различитегеометријске карактеристике цевних размењивача топлоте са оребрењем који сеиспитују на Машинском факултету у Београду.
AB  - In HVAC&R and process engineering, air coolers are often used in the conditions whenambient air temperatures are very high and significantly higher than the temperatures acceptedin the calculations, and hence it is not possible to remove the calculated amount of heat. Inthese cases, the required heat can be reached if the surrounding air is humidified by sprayingwater at the entrance to the apparatus, because this lowers the air temperature, so thetemperature difference increases, as well as the amount of exchanged heat. The appearance ofa layer of moisture on the heat exchanger crucially changes the thermal performance and flowpattern of such apparatus.A more detailed analysis of the available literature shows that the papers whichinvestigate the problem of heat and substance exchange on the surface of the finned heatexchanger with water spraying are not numerous. Hence, the possibility of real application ofdata available in the literature is questionable when it comes to engineering calculations inexploitation of these apparatus, as well as to recommending relevant methodology forcalculating the coefficients of heat and mass transfer in certain conditions.This doctoral dissertation examines different operating regimes of air coolers with finnedtubes during their spraying with water at the entrance to the apparatus. Experimental researchon the operation of these heat exchangers was conducted on a self-designed installation, whichwas made and installed within the heating substation of the Faculty of Mechanical Engineeringin Belgrade. The deployment of a physical and computational model, based on thesimultaneous transport of heat and substance, is important for determining and calculating therelevant operating parameters of heat exchangers. Applying the theory of similarity, along withthe appropriate statistical methods, the relevant criteria equations for the calculation of pressuredrop were determined, as well as the coefficients of heat and mass transfer, i.e. certainequations suitable for engineering practice.This doctoral dissertation is a continuation of research on the problem of finding areliable calculation procedure for determining the coefficients of heat and mass transfer andthe coefficient of friction for a wide range of Reynolds numbers and different geometriccharacteristics of tubular heat exchangers with fins that are tested at the Faculty of MechanicalEngineering in Belgrade.
PB  - Универзитет у Београду, Машински факултет
T2  - Универзитет у Београду
T1  - Перформансе ваздушних хладњака са распршивањем воде
UR  - https://hdl.handle.net/21.15107/rcub_nardus_21097
ER  - 

@phdthesis{
author = "Otović, Milena",
abstract = "Ваздушни хладњаци се у термотехници и процесној техници често примењују уусловима када су температуре амбијенталног ваздуха јако високе и знатно више одтемпература усвојених у прорачунима, па није могуће одвести прорачунску количинутоплоте. Потребна топлотна снага се у таквим случајевима може достићи ако се околниваздух орошава (влажи) распршивањем воде на улазу у апарат, јер се тиме снижаватемпература ваздуха, па се температурна разлика повећава, као и размењена количинатоплоте. Појава слоја влаге на размењивачу топлоте кључно мења топлотне и струјнеперформансе оваквих апарата.Детаљнија анализа расположиве литературе показала је да радови у којима сеистражује проблематика размене топлоте и супстанције на површини оребреногразмењивача топлоте са напрскавањем воде нису бројни, те се доводи у питањемогућност реалне примене података доступних у литератури за потребе инжењерскихпрорачуна при експлоатацији оваквих апарата, односно коју методологију прорачунакоефицијената прелаза топлоте и влаге препоручити као релевантну у одређенимусловима.У овој докторској дисертацији испитивани су различити режими рада ваздушниххладњака са оребреним цевима при њиховом напрскавању водом на улазу у апарат.Експериментална истраживања рада предметних размењивача топлоте су спроведена насамостално пројектованој инсталацији, која је направљена и монтирана у оквирутоплотне подстанице Машинског факултета у Београду. Развој физичког и прорачунскогмодела, заснованог на истовременом транспорту топлоте и супстанције, битан је заодређивање и прорачун релевантних параметара рада размењивача топлоте. Применомтеорије сличности, уз одговарајуће статистичке методе, одређене су меродавнекритеријумске зависности за израчунавање пада притиска, као и коефицијената прелазатоплоте и супстанције, тј. одређени су изрази погодни за инжењерску праксу.Ова докторска дисертација представља наставак истраживања проблемапроналажења поуздане прорачунске процедуре за одређивање коефицијената прелазатоплоте, супстанције и трења за широк опсег Рејнолдсових бројева и различитегеометријске карактеристике цевних размењивача топлоте са оребрењем који сеиспитују на Машинском факултету у Београду., In HVAC&R and process engineering, air coolers are often used in the conditions whenambient air temperatures are very high and significantly higher than the temperatures acceptedin the calculations, and hence it is not possible to remove the calculated amount of heat. Inthese cases, the required heat can be reached if the surrounding air is humidified by sprayingwater at the entrance to the apparatus, because this lowers the air temperature, so thetemperature difference increases, as well as the amount of exchanged heat. The appearance ofa layer of moisture on the heat exchanger crucially changes the thermal performance and flowpattern of such apparatus.A more detailed analysis of the available literature shows that the papers whichinvestigate the problem of heat and substance exchange on the surface of the finned heatexchanger with water spraying are not numerous. Hence, the possibility of real application ofdata available in the literature is questionable when it comes to engineering calculations inexploitation of these apparatus, as well as to recommending relevant methodology forcalculating the coefficients of heat and mass transfer in certain conditions.This doctoral dissertation examines different operating regimes of air coolers with finnedtubes during their spraying with water at the entrance to the apparatus. Experimental researchon the operation of these heat exchangers was conducted on a self-designed installation, whichwas made and installed within the heating substation of the Faculty of Mechanical Engineeringin Belgrade. The deployment of a physical and computational model, based on thesimultaneous transport of heat and substance, is important for determining and calculating therelevant operating parameters of heat exchangers. Applying the theory of similarity, along withthe appropriate statistical methods, the relevant criteria equations for the calculation of pressuredrop were determined, as well as the coefficients of heat and mass transfer, i.e. certainequations suitable for engineering practice.This doctoral dissertation is a continuation of research on the problem of finding areliable calculation procedure for determining the coefficients of heat and mass transfer andthe coefficient of friction for a wide range of Reynolds numbers and different geometriccharacteristics of tubular heat exchangers with fins that are tested at the Faculty of MechanicalEngineering in Belgrade.",
publisher = "Универзитет у Београду, Машински факултет",
journal = "Универзитет у Београду",
title = "Перформансе ваздушних хладњака са распршивањем воде",
url = "https://hdl.handle.net/21.15107/rcub_nardus_21097"
}

Otović, M..Перформансе ваздушних хладњака са распршивањем воде. in Универзитет у Београду
Универзитет у Београду, Машински факултет..
https://hdl.handle.net/21.15107/rcub_nardus_21097

Otović M. Перформансе ваздушних хладњака са распршивањем воде. in Универзитет у Београду..
https://hdl.handle.net/21.15107/rcub_nardus_21097 .

Otović, Milena, "Перформансе ваздушних хладњака са распршивањем воде" in Универзитет у Београду,
https://hdl.handle.net/21.15107/rcub_nardus_21097 .

TY  - PAT
AU  - Živanović, Saša
AU  - Vorkapić, Nikola
AU  - Slavković, Nikola
AU  - Dimić, Zoran
AU  - Vidaković, Jelena
PY  - 2024-04-01
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7790
AB  - Pronalazak se odnosi na multifunkcionalnu i rekonfigurabilnu mašinu alatku za brzu izradu prototipova koja predstavlja novi koncept 3-osne CNC mašine sa horizontalnom obrtnom osom, koja radi u polarno-cilindričnim koordinatama i omogućava jedinstvenu integraciju tri proizvodne tehnologije na jednoj mašini: glodanje, lasersku obradu i dodavanje materijala (3D štampanje). Mašina svoju rekonfigurabilnost ostvaruje zamenom završnih uređaja koji mogu biti glava za glodanje, laserska glava ili glava za 3D štampu, uz razvijeni rekonfigurabilni upravljački softver koji podržava sve tri tehnologije. Mašina se sastoji od nepokretne noseće strukture (1), na kojoj se nalaze horizontalne vođice (10) po kojima je klizno pomerljiv klizač (9) ose X na kome se nalaze vođice (12) po kojima je klizno pomerljiv klizač (11) ose Z, na koji se postavlja ili glavno vreteno (13A) ili laserska glava (13B) ili glava za 3D štampu (13C) kao završni uređaj. Noseća struktura (1) sadrži se i obrtnu osu A’ koju čine pogonski motor (3) koji pomoću kaišnog para (19) prenosi obrtni moment na obrtno vreteno (2), uležišteno nosačima (20) ležaja, sa steznom glavom (21) gde se postavlja obradak. Na nosećoj strukturi (1) se nalaze i vođice (15) po kojima je klizno pomerljiv nosač (14) zadnjeg šiljka koji se koristi kao dodatni oslonac pri stezanju dužih obradaka u cilju povećanja krutosti.
PB  - Zavod za intelektualnu svojinu, Beograd, Knjeginje Ljubice 5
T2  - Broj 1805 U1, Isprava o malom patentu od 01.4.2024.
T1  - Multifunkcionalna i rekonfigurabilna mašina alatka za brzu izradu prototipova glodanjem, laserskom obradom i dodavanjem materijala u polarno cilindričnim koordinatama
EP  - 9
SP  - 1
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7790
ER  - 

@misc{
author = "Živanović, Saša and Vorkapić, Nikola and Slavković, Nikola and Dimić, Zoran and Vidaković, Jelena",
year = "2024-04-01",
abstract = "Pronalazak se odnosi na multifunkcionalnu i rekonfigurabilnu mašinu alatku za brzu izradu prototipova koja predstavlja novi koncept 3-osne CNC mašine sa horizontalnom obrtnom osom, koja radi u polarno-cilindričnim koordinatama i omogućava jedinstvenu integraciju tri proizvodne tehnologije na jednoj mašini: glodanje, lasersku obradu i dodavanje materijala (3D štampanje). Mašina svoju rekonfigurabilnost ostvaruje zamenom završnih uređaja koji mogu biti glava za glodanje, laserska glava ili glava za 3D štampu, uz razvijeni rekonfigurabilni upravljački softver koji podržava sve tri tehnologije. Mašina se sastoji od nepokretne noseće strukture (1), na kojoj se nalaze horizontalne vođice (10) po kojima je klizno pomerljiv klizač (9) ose X na kome se nalaze vođice (12) po kojima je klizno pomerljiv klizač (11) ose Z, na koji se postavlja ili glavno vreteno (13A) ili laserska glava (13B) ili glava za 3D štampu (13C) kao završni uređaj. Noseća struktura (1) sadrži se i obrtnu osu A’ koju čine pogonski motor (3) koji pomoću kaišnog para (19) prenosi obrtni moment na obrtno vreteno (2), uležišteno nosačima (20) ležaja, sa steznom glavom (21) gde se postavlja obradak. Na nosećoj strukturi (1) se nalaze i vođice (15) po kojima je klizno pomerljiv nosač (14) zadnjeg šiljka koji se koristi kao dodatni oslonac pri stezanju dužih obradaka u cilju povećanja krutosti.",
publisher = "Zavod za intelektualnu svojinu, Beograd, Knjeginje Ljubice 5",
journal = "Broj 1805 U1, Isprava o malom patentu od 01.4.2024.",
title = "Multifunkcionalna i rekonfigurabilna mašina alatka za brzu izradu prototipova glodanjem, laserskom obradom i dodavanjem materijala u polarno cilindričnim koordinatama",
pages = "9-1",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7790"
}

Živanović, S., Vorkapić, N., Slavković, N., Dimić, Z.,& Vidaković, J.. (2024-04-01). Multifunkcionalna i rekonfigurabilna mašina alatka za brzu izradu prototipova glodanjem, laserskom obradom i dodavanjem materijala u polarno cilindričnim koordinatama. in Broj 1805 U1, Isprava o malom patentu od 01.4.2024.
Zavod za intelektualnu svojinu, Beograd, Knjeginje Ljubice 5., 1-9.
https://hdl.handle.net/21.15107/rcub_machinery_7790

Živanović S, Vorkapić N, Slavković N, Dimić Z, Vidaković J. Multifunkcionalna i rekonfigurabilna mašina alatka za brzu izradu prototipova glodanjem, laserskom obradom i dodavanjem materijala u polarno cilindričnim koordinatama. in Broj 1805 U1, Isprava o malom patentu od 01.4.2024.. 2024;:1-9.
https://hdl.handle.net/21.15107/rcub_machinery_7790 .

Živanović, Saša, Vorkapić, Nikola, Slavković, Nikola, Dimić, Zoran, Vidaković, Jelena, "Multifunkcionalna i rekonfigurabilna mašina alatka za brzu izradu prototipova glodanjem, laserskom obradom i dodavanjem materijala u polarno cilindričnim koordinatama" in Broj 1805 U1, Isprava o malom patentu od 01.4.2024. (2024-04-01):1-9,
https://hdl.handle.net/21.15107/rcub_machinery_7790 .

TY  - JOUR
AU  - Vukšić Popović, Marija
AU  - Momčilović, Dejan
AU  - Tanasković, Jovan
AU  - Sedmak, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7789
AB  - This paper presents an analysis of train screw coupling used mainly in Europe as mechanical
connection of wagons in train. An analysis of train breaks apart incidents revealed that less than
30 % of the cases were caused by elements of the screw coupling, with coupling links accounting
for only 5 % of the failures. Therefore, the investigation focused on testing the coupling links,
which are safety elements of the screw coupling. The coupling links underwent various inspections,
including visual inspection, dimensional control, non-destructive testing, examination
of chemical composition, and mechanical tests. Dimensional control found longitudinal plastic
deformations of the links. Chemical examination revealed that the links were made of different
material than recommended, but their mechanical properties generally met the recommended
values. However, variations were observed among different links, likely due to different rates of
deformation during testing and operational conditions. Overall, the analysis and inspections
provided insights into the condition and performance of coupling links in the screw coupling
system, highlighting the importance of monitoring and maintaining these elements to ensure safe
and efficient railway operations.
PB  - Elsevier
T2  - Engineering Failure Analysis
T1  - Testing of the condition and performance of coupling links from screw couplings of train
SP  - 108331
VL  - 161
DO  - 10.1016/j.engfailanal.2024.108331
ER  - 

@article{
author = "Vukšić Popović, Marija and Momčilović, Dejan and Tanasković, Jovan and Sedmak, Aleksandar",
year = "2024",
abstract = "This paper presents an analysis of train screw coupling used mainly in Europe as mechanical
connection of wagons in train. An analysis of train breaks apart incidents revealed that less than
30 % of the cases were caused by elements of the screw coupling, with coupling links accounting
for only 5 % of the failures. Therefore, the investigation focused on testing the coupling links,
which are safety elements of the screw coupling. The coupling links underwent various inspections,
including visual inspection, dimensional control, non-destructive testing, examination
of chemical composition, and mechanical tests. Dimensional control found longitudinal plastic
deformations of the links. Chemical examination revealed that the links were made of different
material than recommended, but their mechanical properties generally met the recommended
values. However, variations were observed among different links, likely due to different rates of
deformation during testing and operational conditions. Overall, the analysis and inspections
provided insights into the condition and performance of coupling links in the screw coupling
system, highlighting the importance of monitoring and maintaining these elements to ensure safe
and efficient railway operations.",
publisher = "Elsevier",
journal = "Engineering Failure Analysis",
title = "Testing of the condition and performance of coupling links from screw couplings of train",
pages = "108331",
volume = "161",
doi = "10.1016/j.engfailanal.2024.108331"
}

Vukšić Popović, M., Momčilović, D., Tanasković, J.,& Sedmak, A.. (2024). Testing of the condition and performance of coupling links from screw couplings of train. in Engineering Failure Analysis
Elsevier., 161, 108331.
https://doi.org/10.1016/j.engfailanal.2024.108331

Vukšić Popović M, Momčilović D, Tanasković J, Sedmak A. Testing of the condition and performance of coupling links from screw couplings of train. in Engineering Failure Analysis. 2024;161:108331.
doi:10.1016/j.engfailanal.2024.108331 .

Vukšić Popović, Marija, Momčilović, Dejan, Tanasković, Jovan, Sedmak, Aleksandar, "Testing of the condition and performance of coupling links from screw couplings of train" in Engineering Failure Analysis, 161 (2024):108331,
https://doi.org/10.1016/j.engfailanal.2024.108331 . .

TY  - JOUR
AU  - Milovanović, Aleksa
AU  - Montanari, Matteo
AU  - Golubović, Zorana
AU  - Marghitas, Mihai
AU  - Spagnoli, Andrea
AU  - Brighenti, Roberto
AU  - Sedmak, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7785
AB  - In recent years, Additive Manufacturing (AM) has become an increasingly popular method in industrial
applications for fabricating components with complex geometries, offering several benefits over traditional
(subtractive) manufacturing methods. Among all available AM technologies, ‘‘vat photopolymerization’’ is still
a reliable approach for manufacturing high-resolution components at relatively small costs. This particular
AM technology is based on the photopolymerization process where 3D objects are created by light-induced
solidification and it has been broadly developed and used in the past decades. Depending on the employed
light source there are three different subtypes of this technology, namely: SLA, DLP, and mSLA. Among all
three listed, the Masked Stereolithography Apparatus (mSLA) technology has emerged as a promising approach
due to the much simpler AM machine construction compared to the other two. However, the mechanical
properties of mSLA components have not been studied extensively, hence there is a lack of knowledge of
how AM process parameters and post-processing treatments affect the final mechanical properties of mSLA
components. This work presents an experimental investigation of the compressive and flexural mechanical
responses of components produced through this relatively new AM technology. A series of static and cyclic
tests were conducted with varying layer thickness and post-curing times. It is demonstrated that a thorough
optimization of the mentioned variables is required to obtain parts with the desired mechanical properties.
PB  - Elsevier
T2  - Theoretical and Applied Fracture Mechanics
T1  - Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology
IS  - 104406
VL  - 131
DO  - 10.1016/j.tafmec.2024.104406
ER  - 

@article{
author = "Milovanović, Aleksa and Montanari, Matteo and Golubović, Zorana and Marghitas, Mihai and Spagnoli, Andrea and Brighenti, Roberto and Sedmak, Aleksandar",
year = "2024",
abstract = "In recent years, Additive Manufacturing (AM) has become an increasingly popular method in industrial
applications for fabricating components with complex geometries, offering several benefits over traditional
(subtractive) manufacturing methods. Among all available AM technologies, ‘‘vat photopolymerization’’ is still
a reliable approach for manufacturing high-resolution components at relatively small costs. This particular
AM technology is based on the photopolymerization process where 3D objects are created by light-induced
solidification and it has been broadly developed and used in the past decades. Depending on the employed
light source there are three different subtypes of this technology, namely: SLA, DLP, and mSLA. Among all
three listed, the Masked Stereolithography Apparatus (mSLA) technology has emerged as a promising approach
due to the much simpler AM machine construction compared to the other two. However, the mechanical
properties of mSLA components have not been studied extensively, hence there is a lack of knowledge of
how AM process parameters and post-processing treatments affect the final mechanical properties of mSLA
components. This work presents an experimental investigation of the compressive and flexural mechanical
responses of components produced through this relatively new AM technology. A series of static and cyclic
tests were conducted with varying layer thickness and post-curing times. It is demonstrated that a thorough
optimization of the mentioned variables is required to obtain parts with the desired mechanical properties.",
publisher = "Elsevier",
journal = "Theoretical and Applied Fracture Mechanics",
title = "Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology",
number = "104406",
volume = "131",
doi = "10.1016/j.tafmec.2024.104406"
}

Milovanović, A., Montanari, M., Golubović, Z., Marghitas, M., Spagnoli, A., Brighenti, R.,& Sedmak, A.. (2024). Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology. in Theoretical and Applied Fracture Mechanics
Elsevier., 131(104406).
https://doi.org/10.1016/j.tafmec.2024.104406

Milovanović A, Montanari M, Golubović Z, Marghitas M, Spagnoli A, Brighenti R, Sedmak A. Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology. in Theoretical and Applied Fracture Mechanics. 2024;131(104406).
doi:10.1016/j.tafmec.2024.104406 .

Milovanović, Aleksa, Montanari, Matteo, Golubović, Zorana, Marghitas, Mihai, Spagnoli, Andrea, Brighenti, Roberto, Sedmak, Aleksandar, "Compressive and flexural mechanical responses of components obtained through mSLA vat photopolymerization technology" in Theoretical and Applied Fracture Mechanics, 131, no. 104406 (2024),
https://doi.org/10.1016/j.tafmec.2024.104406 . .

TY  - JOUR
AU  - Milutinović, Milan
AU  - Vasilić, Goran
AU  - Živanović, Saša
AU  - Dimić, Zoran
AU  - Kokotović, Branko
AU  - Slavković, Nikola
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7772
AB  - Brazed carbide profile mill cutters are widely used in the machining of wood, wood materials, and plastic to form various functional and aesthetic surfaces. Tools of this kind are used in serial and mass production and they are built today using very costly 5-axis grinding machines supported by specialized CAM software that is very expensive too. The paper first developed the possible concept of 5-axis grinding of brazed profile mill cutters using universal diamond grinding wheel shapes. The developed concept of 5-axis grinding served as a basis for the developed approach for 3+2-axis grinding of the brazed formmill cutters which is the essence of this paper. Verification of this set approach of 3+2-axis grinding is performed on a developed functional prototype of a simple 3+2-axis grinder (Axes XYZ are CNC controlled, axes B and C are unpowered axes and have fixed positions during grinding). Based on the established 3+2 grinding strategy complete grinding of a complex profile has been performed on a developed functional prototype. Shape and measures of the cutting edge profile achieved by grinding are inspected on an optical measuring system and showed exceptional results. The established 3+2-axis method of grinding
is an economically successful alternative to costly 5-axis grinding machines, as well as to specialized software, presented in the paper through experimental and practical application.
PB  - Springer-Verlag London Ltd.
T2  - The International Journal of Advanced Manufacturing Technology
T1  - Calculation of wheel path for 3+2-axis grinding of brazed carbide profilemill cutters for wood and plastic
EP  - 4620
SP  - 4603
VL  - 130
DO  - 10.1007/s00170-024-12992-3
ER  - 

@article{
author = "Milutinović, Milan and Vasilić, Goran and Živanović, Saša and Dimić, Zoran and Kokotović, Branko and Slavković, Nikola",
year = "2024",
abstract = "Brazed carbide profile mill cutters are widely used in the machining of wood, wood materials, and plastic to form various functional and aesthetic surfaces. Tools of this kind are used in serial and mass production and they are built today using very costly 5-axis grinding machines supported by specialized CAM software that is very expensive too. The paper first developed the possible concept of 5-axis grinding of brazed profile mill cutters using universal diamond grinding wheel shapes. The developed concept of 5-axis grinding served as a basis for the developed approach for 3+2-axis grinding of the brazed formmill cutters which is the essence of this paper. Verification of this set approach of 3+2-axis grinding is performed on a developed functional prototype of a simple 3+2-axis grinder (Axes XYZ are CNC controlled, axes B and C are unpowered axes and have fixed positions during grinding). Based on the established 3+2 grinding strategy complete grinding of a complex profile has been performed on a developed functional prototype. Shape and measures of the cutting edge profile achieved by grinding are inspected on an optical measuring system and showed exceptional results. The established 3+2-axis method of grinding
is an economically successful alternative to costly 5-axis grinding machines, as well as to specialized software, presented in the paper through experimental and practical application.",
publisher = "Springer-Verlag London Ltd.",
journal = "The International Journal of Advanced Manufacturing Technology",
title = "Calculation of wheel path for 3+2-axis grinding of brazed carbide profilemill cutters for wood and plastic",
pages = "4620-4603",
volume = "130",
doi = "10.1007/s00170-024-12992-3"
}

Milutinović, M., Vasilić, G., Živanović, S., Dimić, Z., Kokotović, B.,& Slavković, N.. (2024). Calculation of wheel path for 3+2-axis grinding of brazed carbide profilemill cutters for wood and plastic. in The International Journal of Advanced Manufacturing Technology
Springer-Verlag London Ltd.., 130, 4603-4620.
https://doi.org/10.1007/s00170-024-12992-3

Milutinović M, Vasilić G, Živanović S, Dimić Z, Kokotović B, Slavković N. Calculation of wheel path for 3+2-axis grinding of brazed carbide profilemill cutters for wood and plastic. in The International Journal of Advanced Manufacturing Technology. 2024;130:4603-4620.
doi:10.1007/s00170-024-12992-3 .

Milutinović, Milan, Vasilić, Goran, Živanović, Saša, Dimić, Zoran, Kokotović, Branko, Slavković, Nikola, "Calculation of wheel path for 3+2-axis grinding of brazed carbide profilemill cutters for wood and plastic" in The International Journal of Advanced Manufacturing Technology, 130 (2024):4603-4620,
https://doi.org/10.1007/s00170-024-12992-3 . .

TY  - JOUR
AU  - Mitrović, Nenad
AU  - Golubović, Zorana
AU  - Mitrović, Aleksandra
AU  - Travica, Milan
AU  - Trajković, Isaak
AU  - Milošević, Miloš
AU  - Petrović, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7781
AB  - The three-point bending test is a valuable method for evaluating the mechanical properties of 3D-printed biomaterials, which can be used in various applications. The use of 3D printing in specimen preparation enables precise control over material composition and microstructure, facilitating the investigation of different printing parameters and advanced materials. The traditional approach to analyzing the mechanical properties of a material using a three-point bending test has the disadvantage that it provides only global information about the material’s behavior. This means that it does not provide detailed insight into the local strain distribution within the material. However, the 2D Digital Image Correlation (DIC) method offers additional insight, especially in terms of strain localization. DIC is an optical technique that measures full-field displacements and strains on the surface of a sample. PLA and enhanced PLA-X material were utilized to create three-point bending samples. The aim of this paper was to analyze and compare the influence of aging on the mechanical properties of PLA and enhanced PLA-X materials using three-point bending coupled with the DIC method. The results showed statistically significant differences between the PLA and PLA-X, for both the new and aged materials. The aged PLA samples had the highest average value of maximal force around 68 N, which was an increase of 8.8% compared to the new PLA samples. On the other hand, the aged PLA-X material had an increase of 7.7% in the average maximal force compared to the new PLA-X samples. When comparing the two materials, the PLA samples had higher maximal force values, 6.2% for the new samples, and 7.3% for the aged samples. The DIC results showed that both the new PLA and PLA-X samples endured higher strain values at Points 1 and 2 than the aged ones, except for the aged PLA-X sample at Point 2, where the new sample had higher strain values. However, for the first 5 min of the experiment, both materials exhibited identical behavior, after which point significant differences started to occur for both materials, as well as at Points 1 and 2. A more profound comprehension of the biomechanical characteristics of both PLA and PLA-X material is essential to enhance the knowledge for potential biomedical applications. The DIC method was found to be a powerful tool for analyzing the deformation and failure behavior of samples and for complementing the traditional approach to material testing.
T2  - Micromachines
T1  - Influence of Aging on the Flexural Strength of PLA and PLA-X 3D-Printed Materials
IS  - 3
SP  - 395
VL  - 15
DO  - 10.3390/mi15030395
ER  - 

@article{
author = "Mitrović, Nenad and Golubović, Zorana and Mitrović, Aleksandra and Travica, Milan and Trajković, Isaak and Milošević, Miloš and Petrović, Aleksandar",
year = "2024",
abstract = "The three-point bending test is a valuable method for evaluating the mechanical properties of 3D-printed biomaterials, which can be used in various applications. The use of 3D printing in specimen preparation enables precise control over material composition and microstructure, facilitating the investigation of different printing parameters and advanced materials. The traditional approach to analyzing the mechanical properties of a material using a three-point bending test has the disadvantage that it provides only global information about the material’s behavior. This means that it does not provide detailed insight into the local strain distribution within the material. However, the 2D Digital Image Correlation (DIC) method offers additional insight, especially in terms of strain localization. DIC is an optical technique that measures full-field displacements and strains on the surface of a sample. PLA and enhanced PLA-X material were utilized to create three-point bending samples. The aim of this paper was to analyze and compare the influence of aging on the mechanical properties of PLA and enhanced PLA-X materials using three-point bending coupled with the DIC method. The results showed statistically significant differences between the PLA and PLA-X, for both the new and aged materials. The aged PLA samples had the highest average value of maximal force around 68 N, which was an increase of 8.8% compared to the new PLA samples. On the other hand, the aged PLA-X material had an increase of 7.7% in the average maximal force compared to the new PLA-X samples. When comparing the two materials, the PLA samples had higher maximal force values, 6.2% for the new samples, and 7.3% for the aged samples. The DIC results showed that both the new PLA and PLA-X samples endured higher strain values at Points 1 and 2 than the aged ones, except for the aged PLA-X sample at Point 2, where the new sample had higher strain values. However, for the first 5 min of the experiment, both materials exhibited identical behavior, after which point significant differences started to occur for both materials, as well as at Points 1 and 2. A more profound comprehension of the biomechanical characteristics of both PLA and PLA-X material is essential to enhance the knowledge for potential biomedical applications. The DIC method was found to be a powerful tool for analyzing the deformation and failure behavior of samples and for complementing the traditional approach to material testing.",
journal = "Micromachines",
title = "Influence of Aging on the Flexural Strength of PLA and PLA-X 3D-Printed Materials",
number = "3",
pages = "395",
volume = "15",
doi = "10.3390/mi15030395"
}

Mitrović, N., Golubović, Z., Mitrović, A., Travica, M., Trajković, I., Milošević, M.,& Petrović, A.. (2024). Influence of Aging on the Flexural Strength of PLA and PLA-X 3D-Printed Materials. in Micromachines, 15(3), 395.
https://doi.org/10.3390/mi15030395

Mitrović N, Golubović Z, Mitrović A, Travica M, Trajković I, Milošević M, Petrović A. Influence of Aging on the Flexural Strength of PLA and PLA-X 3D-Printed Materials. in Micromachines. 2024;15(3):395.
doi:10.3390/mi15030395 .

Mitrović, Nenad, Golubović, Zorana, Mitrović, Aleksandra, Travica, Milan, Trajković, Isaak, Milošević, Miloš, Petrović, Aleksandar, "Influence of Aging on the Flexural Strength of PLA and PLA-X 3D-Printed Materials" in Micromachines, 15, no. 3 (2024):395,
https://doi.org/10.3390/mi15030395 . .

Mitrović, N., Mladenović, G.,& Mitrović, A.. (2024). New Trends in Engineering Research: Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023. 
Springer..
https://doi.org/10.1007/978-3-031-46432-4

Mitrović N, Mladenović G, Mitrović A. New Trends in Engineering Research: Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023. 2024;.
doi:10.1007/978-3-031-46432-4 .

Mitrović, Nenad, Mladenović, Goran, Mitrović, Aleksandra, "New Trends in Engineering Research: Proceedings of the International Conference of Experimental and Numerical Investigations and New Technologies, CNNTech 2023" (2024),
https://doi.org/10.1007/978-3-031-46432-4 . .

TY  - CHAP
AU  - Mitrović, Nenad
AU  - Mitrović, Aleksandra
PY  - 2024
UR  - https://enauka.gov.rs/handle/123456789/896748
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7783
AB  - Energy efficiency plays a critical role in achieving economic, social, and environmental sustainability. This paper provides an overview of the current state of energy efficiency in Serbia, focusing on the challenges, opportunities, and potential pathways towards a more sustainable energy sector. The country has recognized the importance of energy efficiency in improving energy security, reducing costs, and complying with international environmental standards. However, Serbia faces significant challenges, including a lack of awareness of the benefits of energy efficiency, insufficient financing, and policy support for energy-efficient technologies. Nevertheless, Serbia possesses considerable potential for energy-efficient technologies and practices, particularly in the residential and industrial sectors. By promoting energy efficiency, Serbia can reduce energy costs, improve energy security, and contribute to global climate-change mitigation efforts. The paper also highlights the global challenges faced by the energy sector, such as rising energy demand, climate change, pollution reduction, and energy poverty, emphasizing the need for greening the energy sector and investing in renewable energy sources. The energy consumption trends, energy intensity, energy productivity, and share of renewable energy sources in Serbia were analyzed using EuroStat data. The paper concludes by emphasizing the importance of ambitious goals, public awareness, modernizing infrastructure, and securing adequate financing to drive energy efficiency improvements in Serbia. This overview serves as a valuable resource for policymakers, researchers, and stakeholders interested in promoting sustainable energy practices in Serbia and fostering a transition towards a more energy-efficient and environmentally friendly energy sector.
PB  - Springer
T2  - New Trends in Engineering Research
T1  - Energy Efficiency in Serbia: Challenges and Opportunities
EP  - 113
SP  - 105
VL  - 792
DO  - 10.1007/978-3-031-46432-4_9
ER  - 

@inbook{
author = "Mitrović, Nenad and Mitrović, Aleksandra",
year = "2024",
abstract = "Energy efficiency plays a critical role in achieving economic, social, and environmental sustainability. This paper provides an overview of the current state of energy efficiency in Serbia, focusing on the challenges, opportunities, and potential pathways towards a more sustainable energy sector. The country has recognized the importance of energy efficiency in improving energy security, reducing costs, and complying with international environmental standards. However, Serbia faces significant challenges, including a lack of awareness of the benefits of energy efficiency, insufficient financing, and policy support for energy-efficient technologies. Nevertheless, Serbia possesses considerable potential for energy-efficient technologies and practices, particularly in the residential and industrial sectors. By promoting energy efficiency, Serbia can reduce energy costs, improve energy security, and contribute to global climate-change mitigation efforts. The paper also highlights the global challenges faced by the energy sector, such as rising energy demand, climate change, pollution reduction, and energy poverty, emphasizing the need for greening the energy sector and investing in renewable energy sources. The energy consumption trends, energy intensity, energy productivity, and share of renewable energy sources in Serbia were analyzed using EuroStat data. The paper concludes by emphasizing the importance of ambitious goals, public awareness, modernizing infrastructure, and securing adequate financing to drive energy efficiency improvements in Serbia. This overview serves as a valuable resource for policymakers, researchers, and stakeholders interested in promoting sustainable energy practices in Serbia and fostering a transition towards a more energy-efficient and environmentally friendly energy sector.",
publisher = "Springer",
journal = "New Trends in Engineering Research",
booktitle = "Energy Efficiency in Serbia: Challenges and Opportunities",
pages = "113-105",
volume = "792",
doi = "10.1007/978-3-031-46432-4_9"
}

Mitrović, N.,& Mitrović, A.. (2024). Energy Efficiency in Serbia: Challenges and Opportunities. in New Trends in Engineering Research
Springer., 792, 105-113.
https://doi.org/10.1007/978-3-031-46432-4_9

Mitrović N, Mitrović A. Energy Efficiency in Serbia: Challenges and Opportunities. in New Trends in Engineering Research. 2024;792:105-113.
doi:10.1007/978-3-031-46432-4_9 .

Mitrović, Nenad, Mitrović, Aleksandra, "Energy Efficiency in Serbia: Challenges and Opportunities" in New Trends in Engineering Research, 792 (2024):105-113,
https://doi.org/10.1007/978-3-031-46432-4_9 . .

TY  - CHAP
AU  - Golubović, Zorana
AU  - Travica, Milan
AU  - Mitrović, Nenad
AU  - Trajković, Isaak
AU  - Milošević, Miloš
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7782
AB  - Additive manufacturing and 3D printing technologies are rapidly evolving and influencing changes in design, prototyping, engineering and manufacturing processes in various industries, including aerospace. In order to use 3D printing processes to produce parts with adequate and satisfactory mechanical properties for aircraft that are constantly exposed to extreme temperatures and environmental conditions, the temperature variations that occur must be taken into account. In this study, small-scale specimens of the thermoplastic polymer material polylactic acid (PLA) were printed using an FDM printer while a thermal imaging camera was used to record the temperature changes during the printing process. The aim was to determine the temperature changes during each step of the printing process of small specimens and to create a future model for testing the temperature distribution.
PB  - Springer
T2  - New Trends in Engineering Research
T1  - Development of a Method for Testing Temperature Distribution During 3D Printing of Specimens with Application in Aerospace Industry
EP  - 95
SP  - 90
VL  - 792
DO  - 10.1007/978-3-031-46432-4_7
ER  - 

@inbook{
author = "Golubović, Zorana and Travica, Milan and Mitrović, Nenad and Trajković, Isaak and Milošević, Miloš",
year = "2024",
abstract = "Additive manufacturing and 3D printing technologies are rapidly evolving and influencing changes in design, prototyping, engineering and manufacturing processes in various industries, including aerospace. In order to use 3D printing processes to produce parts with adequate and satisfactory mechanical properties for aircraft that are constantly exposed to extreme temperatures and environmental conditions, the temperature variations that occur must be taken into account. In this study, small-scale specimens of the thermoplastic polymer material polylactic acid (PLA) were printed using an FDM printer while a thermal imaging camera was used to record the temperature changes during the printing process. The aim was to determine the temperature changes during each step of the printing process of small specimens and to create a future model for testing the temperature distribution.",
publisher = "Springer",
journal = "New Trends in Engineering Research",
booktitle = "Development of a Method for Testing Temperature Distribution During 3D Printing of Specimens with Application in Aerospace Industry",
pages = "95-90",
volume = "792",
doi = "10.1007/978-3-031-46432-4_7"
}

Golubović, Z., Travica, M., Mitrović, N., Trajković, I.,& Milošević, M.. (2024). Development of a Method for Testing Temperature Distribution During 3D Printing of Specimens with Application in Aerospace Industry. in New Trends in Engineering Research
Springer., 792, 90-95.
https://doi.org/10.1007/978-3-031-46432-4_7

Golubović Z, Travica M, Mitrović N, Trajković I, Milošević M. Development of a Method for Testing Temperature Distribution During 3D Printing of Specimens with Application in Aerospace Industry. in New Trends in Engineering Research. 2024;792:90-95.
doi:10.1007/978-3-031-46432-4_7 .

Golubović, Zorana, Travica, Milan, Mitrović, Nenad, Trajković, Isaak, Milošević, Miloš, "Development of a Method for Testing Temperature Distribution During 3D Printing of Specimens with Application in Aerospace Industry" in New Trends in Engineering Research, 792 (2024):90-95,
https://doi.org/10.1007/978-3-031-46432-4_7 . .

TY  - JOUR
AU  - Jelić, Mirjana
AU  - Sedmak, Aleksandar
AU  - Folić, Boris
AU  - Sedmak, Simon
AU  - Aranđelović, Mihajlo
AU  - Folić, Radomir
AU  - Radu, Dorin
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7779
AB  - Belgrade fair hall 1 is well known for its dome, which is still the world largest self-supported construction made of pre-stressed concrete, with its diameter of 106 m. In this paper the Finite Element Method (FEM) was performed to analyze different loading and supporting conditions. At the same time, crack growth in a support column was simulated by the extended FEM (XFEM). Results of numerical calculations indicate ingenious design of such a complex structure which was based on “hand” calculation decades ago, without computers. In addition to classical engineering and more advanced numerical calculations, risk based analysis was performed taking into account artificially introduced crack and Failure Analysis Diagram, obtained using stress intensity factor and net stress, as well as fracture toughness and critical stress. This analysis, made for the first time for Belgrade fair hall 1, proved that its structural integrity is jeopardized only when a crack reaches half the thickness of a steel bar.
T2  - Frattura ed Integrita Strutturale
T1  - Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1
EP  - 351
IS  - 67
SP  - 337
VL  - 18
DO  - 10.3221/IGF-ESIS.67.24
ER  - 

@article{
author = "Jelić, Mirjana and Sedmak, Aleksandar and Folić, Boris and Sedmak, Simon and Aranđelović, Mihajlo and Folić, Radomir and Radu, Dorin",
year = "2024",
abstract = "Belgrade fair hall 1 is well known for its dome, which is still the world largest self-supported construction made of pre-stressed concrete, with its diameter of 106 m. In this paper the Finite Element Method (FEM) was performed to analyze different loading and supporting conditions. At the same time, crack growth in a support column was simulated by the extended FEM (XFEM). Results of numerical calculations indicate ingenious design of such a complex structure which was based on “hand” calculation decades ago, without computers. In addition to classical engineering and more advanced numerical calculations, risk based analysis was performed taking into account artificially introduced crack and Failure Analysis Diagram, obtained using stress intensity factor and net stress, as well as fracture toughness and critical stress. This analysis, made for the first time for Belgrade fair hall 1, proved that its structural integrity is jeopardized only when a crack reaches half the thickness of a steel bar.",
journal = "Frattura ed Integrita Strutturale",
title = "Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1",
pages = "351-337",
number = "67",
volume = "18",
doi = "10.3221/IGF-ESIS.67.24"
}

Jelić, M., Sedmak, A., Folić, B., Sedmak, S., Aranđelović, M., Folić, R.,& Radu, D.. (2024). Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1. in Frattura ed Integrita Strutturale, 18(67), 337-351.
https://doi.org/10.3221/IGF-ESIS.67.24

Jelić M, Sedmak A, Folić B, Sedmak S, Aranđelović M, Folić R, Radu D. Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1. in Frattura ed Integrita Strutturale. 2024;18(67):337-351.
doi:10.3221/IGF-ESIS.67.24 .

Jelić, Mirjana, Sedmak, Aleksandar, Folić, Boris, Sedmak, Simon, Aranđelović, Mihajlo, Folić, Radomir, Radu, Dorin, "Structural integrity analysis of the pre-stressed concrete dome of the Belgrade fair hall 1" in Frattura ed Integrita Strutturale, 18, no. 67 (2024):337-351,
https://doi.org/10.3221/IGF-ESIS.67.24 . .

TY  - JOUR
AU  - Sedmak, Aleksandar
AU  - Petrovski, Blagoj
AU  - Grbović, Aleksandar
AU  - Sedmak, Simon
AU  - Milošević, Nenad
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7778
AB  - Experimental and numerical analysis of crack growth in integral skin-stringer panels, produced by Laser Beam Welding (LBW), was performed in the scope of WELDAIR project and later on. Experiment was performed on full-scale components (four stringers, three welded clips), made of AA 6156 T6. Digital Image Correlation (DIC) was used to measure strains and construct CTOD or J crack resistance curves. It was shown that J vs. Δa can have unusual shape, indicating real component crack resistance instead of critical J value commonly obtained by comparing J-R curves with calculated Crack Driving Forces (CDFs). The applied technique is simple, practical and has no limitation in respect to material and geometry
PB  - Elsevier
T2  - Procedia Structural Integrity
T1  - Crack Resistance of AA6156 Welded Stringer Panels
EP  - 380
SP  - 376
VL  - 54
DO  - 10.1016/j.prostr.2024.01.096
ER  - 

@article{
author = "Sedmak, Aleksandar and Petrovski, Blagoj and Grbović, Aleksandar and Sedmak, Simon and Milošević, Nenad",
year = "2024",
abstract = "Experimental and numerical analysis of crack growth in integral skin-stringer panels, produced by Laser Beam Welding (LBW), was performed in the scope of WELDAIR project and later on. Experiment was performed on full-scale components (four stringers, three welded clips), made of AA 6156 T6. Digital Image Correlation (DIC) was used to measure strains and construct CTOD or J crack resistance curves. It was shown that J vs. Δa can have unusual shape, indicating real component crack resistance instead of critical J value commonly obtained by comparing J-R curves with calculated Crack Driving Forces (CDFs). The applied technique is simple, practical and has no limitation in respect to material and geometry",
publisher = "Elsevier",
journal = "Procedia Structural Integrity",
title = "Crack Resistance of AA6156 Welded Stringer Panels",
pages = "380-376",
volume = "54",
doi = "10.1016/j.prostr.2024.01.096"
}

Sedmak, A., Petrovski, B., Grbović, A., Sedmak, S.,& Milošević, N.. (2024). Crack Resistance of AA6156 Welded Stringer Panels. in Procedia Structural Integrity
Elsevier., 54, 376-380.
https://doi.org/10.1016/j.prostr.2024.01.096

Sedmak A, Petrovski B, Grbović A, Sedmak S, Milošević N. Crack Resistance of AA6156 Welded Stringer Panels. in Procedia Structural Integrity. 2024;54:376-380.
doi:10.1016/j.prostr.2024.01.096 .

Sedmak, Aleksandar, Petrovski, Blagoj, Grbović, Aleksandar, Sedmak, Simon, Milošević, Nenad, "Crack Resistance of AA6156 Welded Stringer Panels" in Procedia Structural Integrity, 54 (2024):376-380,
https://doi.org/10.1016/j.prostr.2024.01.096 . .

TY  - CONF
AU  - Milovanović, Aleksa
AU  - Galațanu, Sergiu-Valentin
AU  - Sedmak, Aleksandar
AU  - Marsavina, Liviu
AU  - Trajković, Isaak
AU  - Popa, Cosmin-Florin
AU  - Milošević, Miloš
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7780
AB  - Polylactic Acid (PLA) is a widely used material in Fused Deposition Modeling (FDM) technology. Additive Manufacturing (AM) parameters are known to have an influence on the mechanical properties of final components. In FDM, the layer thickness is an influencing parameter providing overall better mechanical properties with lower layer thickness values. In that case, the air gaps created between layers and raster lines have a lower share in total volume. However, layer over-compression might be an issue when choosing the lowest layer thickness options. This research paper investigates the impact properties of PLA material with variations in layer thickness namely, 0.1, 0.2, and 0.3 mm are considered here. Charpy tests were used for the impact property assessment, and all specimens were prepared with 100% infill percentage and honeycomb infill structure. Worth mentioning is that specimens have AMed notches. The impact tests were carried out on 7 specimens per batch (a total of 21 specimens). Therefore, obtained impact results from an instrumented pendulum were observed between groups to have an insight into the beneficial influence of lower layer thickness on impact properties and lower result scatter that finer layer resolution should produce.
PB  - Elsevier
C3  - Procedia Structural Integrity
T1  - Layer thickness influence on impact properties of FDM printed PLA material
EP  - 197
SP  - 190
VL  - 56
DO  - 10.1016/j.prostr.2024.02.055
ER  - 

@conference{
author = "Milovanović, Aleksa and Galațanu, Sergiu-Valentin and Sedmak, Aleksandar and Marsavina, Liviu and Trajković, Isaak and Popa, Cosmin-Florin and Milošević, Miloš",
year = "2024",
abstract = "Polylactic Acid (PLA) is a widely used material in Fused Deposition Modeling (FDM) technology. Additive Manufacturing (AM) parameters are known to have an influence on the mechanical properties of final components. In FDM, the layer thickness is an influencing parameter providing overall better mechanical properties with lower layer thickness values. In that case, the air gaps created between layers and raster lines have a lower share in total volume. However, layer over-compression might be an issue when choosing the lowest layer thickness options. This research paper investigates the impact properties of PLA material with variations in layer thickness namely, 0.1, 0.2, and 0.3 mm are considered here. Charpy tests were used for the impact property assessment, and all specimens were prepared with 100% infill percentage and honeycomb infill structure. Worth mentioning is that specimens have AMed notches. The impact tests were carried out on 7 specimens per batch (a total of 21 specimens). Therefore, obtained impact results from an instrumented pendulum were observed between groups to have an insight into the beneficial influence of lower layer thickness on impact properties and lower result scatter that finer layer resolution should produce.",
publisher = "Elsevier",
journal = "Procedia Structural Integrity",
title = "Layer thickness influence on impact properties of FDM printed PLA material",
pages = "197-190",
volume = "56",
doi = "10.1016/j.prostr.2024.02.055"
}

Milovanović, A., Galațanu, S., Sedmak, A., Marsavina, L., Trajković, I., Popa, C.,& Milošević, M.. (2024). Layer thickness influence on impact properties of FDM printed PLA material. in Procedia Structural Integrity
Elsevier., 56, 190-197.
https://doi.org/10.1016/j.prostr.2024.02.055

Milovanović A, Galațanu S, Sedmak A, Marsavina L, Trajković I, Popa C, Milošević M. Layer thickness influence on impact properties of FDM printed PLA material. in Procedia Structural Integrity. 2024;56:190-197.
doi:10.1016/j.prostr.2024.02.055 .

Milovanović, Aleksa, Galațanu, Sergiu-Valentin, Sedmak, Aleksandar, Marsavina, Liviu, Trajković, Isaak, Popa, Cosmin-Florin, Milošević, Miloš, "Layer thickness influence on impact properties of FDM printed PLA material" in Procedia Structural Integrity, 56 (2024):190-197,
https://doi.org/10.1016/j.prostr.2024.02.055 . .

TY  - JOUR
AU  - Aranđelović, Mihajlo
AU  - Đorđević, Branislav R.
AU  - Sedmak, Simon
AU  - Radu, Dorin
AU  - Petrović, Ana
AU  - Dikić, Stefan
AU  - Sedmak, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7776
AB  - Failure analysis of welded joint with multiple defects was performed taking into account the effect of all defects, not just a dominant one. Four cases of multiple defects in welded joint under the uniaxial tensile loading were investigated using extended Finite Element Method. Two-dimensional Finite Element Models were made according to the tensile specimens with initial crack located in a critical area of welded joint. For each multiple defects case, numerical simulation was performed with three initial crack depth. Engineering Critical Analysis was made using Failure Assessment Diagrams for each defect that was determined as critical for its welded joint case. Numerical simulation showed that the geometry of the most prominent one from a point of view of structural integrity. It was concluded that the vertical misalignment in combination with a secondary defect, had the most adverse effect which can lead to failure of welded structure.
PB  - Elsevier
T2  - Engineering Failure Analysis
T1  - Failure analysis of welded joint with multiple defects by extended Finite Element Method and Engineering Critical Analysis
SP  - 108176
VL  - 160
DO  - 10.1016/j.engfailanal.2024.108176
ER  - 

@article{
author = "Aranđelović, Mihajlo and Đorđević, Branislav R. and Sedmak, Simon and Radu, Dorin and Petrović, Ana and Dikić, Stefan and Sedmak, Aleksandar",
year = "2024",
abstract = "Failure analysis of welded joint with multiple defects was performed taking into account the effect of all defects, not just a dominant one. Four cases of multiple defects in welded joint under the uniaxial tensile loading were investigated using extended Finite Element Method. Two-dimensional Finite Element Models were made according to the tensile specimens with initial crack located in a critical area of welded joint. For each multiple defects case, numerical simulation was performed with three initial crack depth. Engineering Critical Analysis was made using Failure Assessment Diagrams for each defect that was determined as critical for its welded joint case. Numerical simulation showed that the geometry of the most prominent one from a point of view of structural integrity. It was concluded that the vertical misalignment in combination with a secondary defect, had the most adverse effect which can lead to failure of welded structure.",
publisher = "Elsevier",
journal = "Engineering Failure Analysis",
title = "Failure analysis of welded joint with multiple defects by extended Finite Element Method and Engineering Critical Analysis",
pages = "108176",
volume = "160",
doi = "10.1016/j.engfailanal.2024.108176"
}

Aranđelović, M., Đorđević, B. R., Sedmak, S., Radu, D., Petrović, A., Dikić, S.,& Sedmak, A.. (2024). Failure analysis of welded joint with multiple defects by extended Finite Element Method and Engineering Critical Analysis. in Engineering Failure Analysis
Elsevier., 160, 108176.
https://doi.org/10.1016/j.engfailanal.2024.108176

Aranđelović M, Đorđević BR, Sedmak S, Radu D, Petrović A, Dikić S, Sedmak A. Failure analysis of welded joint with multiple defects by extended Finite Element Method and Engineering Critical Analysis. in Engineering Failure Analysis. 2024;160:108176.
doi:10.1016/j.engfailanal.2024.108176 .

Aranđelović, Mihajlo, Đorđević, Branislav R., Sedmak, Simon, Radu, Dorin, Petrović, Ana, Dikić, Stefan, Sedmak, Aleksandar, "Failure analysis of welded joint with multiple defects by extended Finite Element Method and Engineering Critical Analysis" in Engineering Failure Analysis, 160 (2024):108176,
https://doi.org/10.1016/j.engfailanal.2024.108176 . .

TY  - JOUR
AU  - Sedmak, Aleksandar
AU  - Radu, Dorin
AU  - Aranđelović, Mihajlo
AU  - Sedmak, Simon
AU  - Bancila, Radu
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7777
AB  - Numerous roads and railways network steel bridges exist with more than 100 years in service, often of great historical value. The in-service safety assessment of these structures is a complex problem which requires interdisciplinary approaches – from civil engineering application of Eurocodes or European recommendation for fatigue life estimation, up to an in-depth assessment by means of fracture mechanics. This article emphasizes the importance of rehabilitating the structure of existing steel bridges, considering the historical monument character of these structures, as well as the reuse of existing structures. Toward this aim, the study case for a historical riveted steel bridge build in the beginning of the twentieth century is presented, with an assessment method considering the structural integrity by means of fracture mechanics. Based on this case study, the paper is proposing an algorithm to assess historical steel bridges. The results of in-depth XFEM analysis with different crack size in the area of a riveted joint are also presented, in order to validate the algorithm.
PB  - Elsevier
T2  - Engineering Fracture Mechanics
T1  - Residual life assessment of the historical road riveted bridges
SP  - 109960
VL  - 299
DO  - 10.1016/j.engfracmech.2024.109960
ER  - 

@article{
author = "Sedmak, Aleksandar and Radu, Dorin and Aranđelović, Mihajlo and Sedmak, Simon and Bancila, Radu",
year = "2024",
abstract = "Numerous roads and railways network steel bridges exist with more than 100 years in service, often of great historical value. The in-service safety assessment of these structures is a complex problem which requires interdisciplinary approaches – from civil engineering application of Eurocodes or European recommendation for fatigue life estimation, up to an in-depth assessment by means of fracture mechanics. This article emphasizes the importance of rehabilitating the structure of existing steel bridges, considering the historical monument character of these structures, as well as the reuse of existing structures. Toward this aim, the study case for a historical riveted steel bridge build in the beginning of the twentieth century is presented, with an assessment method considering the structural integrity by means of fracture mechanics. Based on this case study, the paper is proposing an algorithm to assess historical steel bridges. The results of in-depth XFEM analysis with different crack size in the area of a riveted joint are also presented, in order to validate the algorithm.",
publisher = "Elsevier",
journal = "Engineering Fracture Mechanics",
title = "Residual life assessment of the historical road riveted bridges",
pages = "109960",
volume = "299",
doi = "10.1016/j.engfracmech.2024.109960"
}

Sedmak, A., Radu, D., Aranđelović, M., Sedmak, S.,& Bancila, R.. (2024). Residual life assessment of the historical road riveted bridges. in Engineering Fracture Mechanics
Elsevier., 299, 109960.
https://doi.org/10.1016/j.engfracmech.2024.109960

Sedmak A, Radu D, Aranđelović M, Sedmak S, Bancila R. Residual life assessment of the historical road riveted bridges. in Engineering Fracture Mechanics. 2024;299:109960.
doi:10.1016/j.engfracmech.2024.109960 .

Sedmak, Aleksandar, Radu, Dorin, Aranđelović, Mihajlo, Sedmak, Simon, Bancila, Radu, "Residual life assessment of the historical road riveted bridges" in Engineering Fracture Mechanics, 299 (2024):109960,
https://doi.org/10.1016/j.engfracmech.2024.109960 . .

TY  - JOUR
AU  - Alsharif, Abdulghder Mohahmed
AU  - Spasojević Brkić, Vesna
AU  - Misita, Mirjana
AU  - Mihajlović, Ivan
AU  - Brkić, Aleksandar
AU  - Papić, Neda
AU  - Perišić, Martina
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7746
AB  - Transport and mining companies are vulnerable to a variety of hazards, and this paper offers a novel conceptual framework for organisational resilience assessment at different organisational levels. It is based on a safety climate and performances assessment in companies in the transport and mining sector. The framework contains factor and reliability analysis and continues by applying the SMART method from the perspective of resilience corners: anticipate, monitor, react and learn. The highest resilience coefficients at all organisational levels are obtained regarding safety awareness, safety training and safety communication areas, while the lowest values are observed for risk assessment and the organisational environment. The obtained results indicate that the ‘monitor’ resilience corner must be improved at all organisational levels, employees trained and procedures changed, since employees do not sufficiently use experience from previous events. The very high values at all organisational levels of the coefficients regarding the ‘anticipate’ and ‘learn’ resilience corners indicate organisational adaptation to changes through corrective activities, rather than planned preventive ones. All hierarchical levels have good resilience indicators, except for middle management, which expressed an adequate resilience index, due to the lower ratings of the safety training, organisational commitment, risk assessment and management support areas.
PB  - Taylor & Francis
T2  - Civil Engineering and Environmental Systems
T1  - The safety climate, hierarchical levels and resilience assessment in transport and mining companies
DO  - 10.1080/10286608.2024.2313753
ER  - 

@article{
author = "Alsharif, Abdulghder Mohahmed and Spasojević Brkić, Vesna and Misita, Mirjana and Mihajlović, Ivan and Brkić, Aleksandar and Papić, Neda and Perišić, Martina",
year = "2024",
abstract = "Transport and mining companies are vulnerable to a variety of hazards, and this paper offers a novel conceptual framework for organisational resilience assessment at different organisational levels. It is based on a safety climate and performances assessment in companies in the transport and mining sector. The framework contains factor and reliability analysis and continues by applying the SMART method from the perspective of resilience corners: anticipate, monitor, react and learn. The highest resilience coefficients at all organisational levels are obtained regarding safety awareness, safety training and safety communication areas, while the lowest values are observed for risk assessment and the organisational environment. The obtained results indicate that the ‘monitor’ resilience corner must be improved at all organisational levels, employees trained and procedures changed, since employees do not sufficiently use experience from previous events. The very high values at all organisational levels of the coefficients regarding the ‘anticipate’ and ‘learn’ resilience corners indicate organisational adaptation to changes through corrective activities, rather than planned preventive ones. All hierarchical levels have good resilience indicators, except for middle management, which expressed an adequate resilience index, due to the lower ratings of the safety training, organisational commitment, risk assessment and management support areas.",
publisher = "Taylor & Francis",
journal = "Civil Engineering and Environmental Systems",
title = "The safety climate, hierarchical levels and resilience assessment in transport and mining companies",
doi = "10.1080/10286608.2024.2313753"
}

Alsharif, A. M., Spasojević Brkić, V., Misita, M., Mihajlović, I., Brkić, A., Papić, N.,& Perišić, M.. (2024). The safety climate, hierarchical levels and resilience assessment in transport and mining companies. in Civil Engineering and Environmental Systems
Taylor & Francis..
https://doi.org/10.1080/10286608.2024.2313753

Alsharif AM, Spasojević Brkić V, Misita M, Mihajlović I, Brkić A, Papić N, Perišić M. The safety climate, hierarchical levels and resilience assessment in transport and mining companies. in Civil Engineering and Environmental Systems. 2024;.
doi:10.1080/10286608.2024.2313753 .

Alsharif, Abdulghder Mohahmed, Spasojević Brkić, Vesna, Misita, Mirjana, Mihajlović, Ivan, Brkić, Aleksandar, Papić, Neda, Perišić, Martina, "The safety climate, hierarchical levels and resilience assessment in transport and mining companies" in Civil Engineering and Environmental Systems (2024),
https://doi.org/10.1080/10286608.2024.2313753 . .

TY  - JOUR
AU  - Koruga, Djuro
AU  - Stanković, Ivana
AU  - Matija, Lidija
AU  - Khun, Dietmar
AU  - Christ, Bastien
AU  - Dembski, Sofia
AU  - Jevtic, Nenad
AU  - Janac, Jelena
AU  - Pavlovic, Vladimir
AU  - De Wever, Bart
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7763
AB  - In order to maximally reduce the toxicity of fullerenol (the first derivative of C60, FD-C60), and increase its biomedical efficiency, the second derivative SD-C60 (3HFWC, Hyper-Harmonized Hydroxylated Fullerene Water Complex) was created. Several different methods were applied in the comparative characterization of FD-C60 and SD-C60 with the same OH groups in their core. FD-C60 as an individual structure was about 1.3 nm in size, while SD-C60 as an individual structure was 10–30 nm in size. Based on ten physicochemical methods and techniques, FD-C60 and SD-C60 were found to be two different substances in terms of size, structure, and physicochemical properties; FD-C60, at 100 °C, had endothermic characteristics, while SD-C60, at 133 °C, had exothermic characteristics; FD-C60 did not have water layers, while SD-C60 had water layers; the zeta potential of FD-C60 was −25.85 mV, while it was −43.29 mV for SD-C60. SD-C60 is a promising substance for use in cosmetics and pharmaceuticals.
T2  - Nanomaterials
T1  - Comparative Studies of the Structural and Physicochemical Properties of the First Fullerene Derivative FD-C60 (Fullerenol) and Second Fullerene Derivate SD-C60 (3HFWC)
VL  - 5
DO  - 10.3390/nano14050480
ER  - 

@article{
author = "Koruga, Djuro and Stanković, Ivana and Matija, Lidija and Khun, Dietmar and Christ, Bastien and Dembski, Sofia and Jevtic, Nenad and Janac, Jelena and Pavlovic, Vladimir and De Wever, Bart",
year = "2024",
abstract = "In order to maximally reduce the toxicity of fullerenol (the first derivative of C60, FD-C60), and increase its biomedical efficiency, the second derivative SD-C60 (3HFWC, Hyper-Harmonized Hydroxylated Fullerene Water Complex) was created. Several different methods were applied in the comparative characterization of FD-C60 and SD-C60 with the same OH groups in their core. FD-C60 as an individual structure was about 1.3 nm in size, while SD-C60 as an individual structure was 10–30 nm in size. Based on ten physicochemical methods and techniques, FD-C60 and SD-C60 were found to be two different substances in terms of size, structure, and physicochemical properties; FD-C60, at 100 °C, had endothermic characteristics, while SD-C60, at 133 °C, had exothermic characteristics; FD-C60 did not have water layers, while SD-C60 had water layers; the zeta potential of FD-C60 was −25.85 mV, while it was −43.29 mV for SD-C60. SD-C60 is a promising substance for use in cosmetics and pharmaceuticals.",
journal = "Nanomaterials",
title = "Comparative Studies of the Structural and Physicochemical Properties of the First Fullerene Derivative FD-C60 (Fullerenol) and Second Fullerene Derivate SD-C60 (3HFWC)",
volume = "5",
doi = "10.3390/nano14050480"
}

Koruga, D., Stanković, I., Matija, L., Khun, D., Christ, B., Dembski, S., Jevtic, N., Janac, J., Pavlovic, V.,& De Wever, B.. (2024). Comparative Studies of the Structural and Physicochemical Properties of the First Fullerene Derivative FD-C60 (Fullerenol) and Second Fullerene Derivate SD-C60 (3HFWC). in Nanomaterials, 5.
https://doi.org/10.3390/nano14050480

Koruga D, Stanković I, Matija L, Khun D, Christ B, Dembski S, Jevtic N, Janac J, Pavlovic V, De Wever B. Comparative Studies of the Structural and Physicochemical Properties of the First Fullerene Derivative FD-C60 (Fullerenol) and Second Fullerene Derivate SD-C60 (3HFWC). in Nanomaterials. 2024;5.
doi:10.3390/nano14050480 .

Koruga, Djuro, Stanković, Ivana, Matija, Lidija, Khun, Dietmar, Christ, Bastien, Dembski, Sofia, Jevtic, Nenad, Janac, Jelena, Pavlovic, Vladimir, De Wever, Bart, "Comparative Studies of the Structural and Physicochemical Properties of the First Fullerene Derivative FD-C60 (Fullerenol) and Second Fullerene Derivate SD-C60 (3HFWC)" in Nanomaterials, 5 (2024),
https://doi.org/10.3390/nano14050480 . .

TY  - JOUR
AU  - Lukić, Nebojša
AU  - Ivanov, Toni
AU  - Svorcan, Jelena
AU  - Simonović, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7771
AB  - A novel concept of morphing airfoils, capable of changing camber and thickness, is proposed. A variable airfoil shape, defined by six input parameters, is achieved by allowing the three spinal points (at fixed axial positions) to slide vertically, while the upper and lower surfaces are determined by the lengths of the three corresponding ribs that are perpendicular to the spine. Thus, it is possible to find the most appropriate geometric configuration for a wide range of possible operating conditions often present with contemporary unmanned aerial vehicles. Shape optimizations for different Reynolds numbers and different cost functions are performed by coupling a genetic algorithm with simple panel method flow calculations. The obtained airfoils are presented and compared, whereas the proposed concept is validated by more advanced flow simulations. It appears that improvements in aerodynamic performance of nearly 20% can be expected at Re ranging from 0.05 × 106 to 0.1 × 106. The proposed methodology shows promise and can be applied to different types of lifting surfaces, including wing, tail or propeller blade segments. To check the viability of this method for producing airfoils that can be used in a practical sense, structural analysis of one of the obtained geometries using a simplified 1D finite element method as well as a more detailed 3D analysis are performed. The model is then 3D-printed on a fused deposition modeling (FDM) printer with a polyethylene terephthalate glycol (PETG) filament, and the capability of the airfoil to adequately morph between the two desired geometries is experimentally shown.
PB  - MDPI
T2  - Aerospace
T1  - Numerical Investigation and Optimization of a Morphing Airfoil Designed for Lower Reynolds Number
IS  - 4
SP  - 252
VL  - 11
DO  - 10.3390/aerospace11040252
ER  - 

@article{
author = "Lukić, Nebojša and Ivanov, Toni and Svorcan, Jelena and Simonović, Aleksandar",
year = "2024",
abstract = "A novel concept of morphing airfoils, capable of changing camber and thickness, is proposed. A variable airfoil shape, defined by six input parameters, is achieved by allowing the three spinal points (at fixed axial positions) to slide vertically, while the upper and lower surfaces are determined by the lengths of the three corresponding ribs that are perpendicular to the spine. Thus, it is possible to find the most appropriate geometric configuration for a wide range of possible operating conditions often present with contemporary unmanned aerial vehicles. Shape optimizations for different Reynolds numbers and different cost functions are performed by coupling a genetic algorithm with simple panel method flow calculations. The obtained airfoils are presented and compared, whereas the proposed concept is validated by more advanced flow simulations. It appears that improvements in aerodynamic performance of nearly 20% can be expected at Re ranging from 0.05 × 106 to 0.1 × 106. The proposed methodology shows promise and can be applied to different types of lifting surfaces, including wing, tail or propeller blade segments. To check the viability of this method for producing airfoils that can be used in a practical sense, structural analysis of one of the obtained geometries using a simplified 1D finite element method as well as a more detailed 3D analysis are performed. The model is then 3D-printed on a fused deposition modeling (FDM) printer with a polyethylene terephthalate glycol (PETG) filament, and the capability of the airfoil to adequately morph between the two desired geometries is experimentally shown.",
publisher = "MDPI",
journal = "Aerospace",
title = "Numerical Investigation and Optimization of a Morphing Airfoil Designed for Lower Reynolds Number",
number = "4",
pages = "252",
volume = "11",
doi = "10.3390/aerospace11040252"
}

Lukić, N., Ivanov, T., Svorcan, J.,& Simonović, A.. (2024). Numerical Investigation and Optimization of a Morphing Airfoil Designed for Lower Reynolds Number. in Aerospace
MDPI., 11(4), 252.
https://doi.org/10.3390/aerospace11040252

Lukić N, Ivanov T, Svorcan J, Simonović A. Numerical Investigation and Optimization of a Morphing Airfoil Designed for Lower Reynolds Number. in Aerospace. 2024;11(4):252.
doi:10.3390/aerospace11040252 .

Lukić, Nebojša, Ivanov, Toni, Svorcan, Jelena, Simonović, Aleksandar, "Numerical Investigation and Optimization of a Morphing Airfoil Designed for Lower Reynolds Number" in Aerospace, 11, no. 4 (2024):252,
https://doi.org/10.3390/aerospace11040252 . .

TY  - JOUR
AU  - Kosanić, Nenad
AU  - Marolt, Jakob
AU  - Zrnić, Nenad
AU  - Lerher, Tone
PY  - 2024
UR  - https://www.tandfonline.com/doi/full/10.1080/00207543.2023.2221750
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7773
AB  - The paper presents an analytical model for travel time evaluation in double-deep, triple-deep, quadruple-deep and fivefold-deep tier-captive shuttle-based storage and retrieval system (SBS/RS). Under the assumption of the deepest location rule for the storage process and the nearest neighbour rule for the retrieval process, the expressions for single-command and dual-command cycle times of the shuttle vehicle and elevator are developed, from which the SBS/RS performance can be estimated. The model based on the probability theory enables the evaluation of all individual times that make up the cycle times and assessment of the average number of totes relocated during a retrieval process. Special attention is devoted to the modelling of the relocation of totes which block access to the requested tote during the retrieval process. The validity of the analytical model is examined via the developed simulation model. The given case study shows that the proposed analytical travel time model results match the results of the simulation model. The presented modelling strategy could be applied to bigger system racking depths following the same modelling logic.
PB  - Taylor and Francis Ltd.
T2  - International Journal of Production Research
T1  - Travel time model for multiple-deep shuttle-based storage and retrieval systems
EP  - 2639
IS  - 7
SP  - 2606
VL  - 62
DO  - 10.1080/00207543.2023.2221750
ER  - 

@article{
author = "Kosanić, Nenad and Marolt, Jakob and Zrnić, Nenad and Lerher, Tone",
year = "2024",
abstract = "The paper presents an analytical model for travel time evaluation in double-deep, triple-deep, quadruple-deep and fivefold-deep tier-captive shuttle-based storage and retrieval system (SBS/RS). Under the assumption of the deepest location rule for the storage process and the nearest neighbour rule for the retrieval process, the expressions for single-command and dual-command cycle times of the shuttle vehicle and elevator are developed, from which the SBS/RS performance can be estimated. The model based on the probability theory enables the evaluation of all individual times that make up the cycle times and assessment of the average number of totes relocated during a retrieval process. Special attention is devoted to the modelling of the relocation of totes which block access to the requested tote during the retrieval process. The validity of the analytical model is examined via the developed simulation model. The given case study shows that the proposed analytical travel time model results match the results of the simulation model. The presented modelling strategy could be applied to bigger system racking depths following the same modelling logic.",
publisher = "Taylor and Francis Ltd.",
journal = "International Journal of Production Research",
title = "Travel time model for multiple-deep shuttle-based storage and retrieval systems",
pages = "2639-2606",
number = "7",
volume = "62",
doi = "10.1080/00207543.2023.2221750"
}

Kosanić, N., Marolt, J., Zrnić, N.,& Lerher, T.. (2024). Travel time model for multiple-deep shuttle-based storage and retrieval systems. in International Journal of Production Research
Taylor and Francis Ltd.., 62(7), 2606-2639.
https://doi.org/10.1080/00207543.2023.2221750

Kosanić N, Marolt J, Zrnić N, Lerher T. Travel time model for multiple-deep shuttle-based storage and retrieval systems. in International Journal of Production Research. 2024;62(7):2606-2639.
doi:10.1080/00207543.2023.2221750 .

Kosanić, Nenad, Marolt, Jakob, Zrnić, Nenad, Lerher, Tone, "Travel time model for multiple-deep shuttle-based storage and retrieval systems" in International Journal of Production Research, 62, no. 7 (2024):2606-2639,
https://doi.org/10.1080/00207543.2023.2221750 . .

TY  - CONF
AU  - Todorović, Ivan
AU  - Jovanović, Milan
AU  - Krivokapić, Jovan
AU  - Milković, Dragan
AU  - Lučanin, Vojkan
AU  - Tanasković, Jovan
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7774
AB  - Digital transformation of business activities has outgrown from
competitive advantage to necessity in recent years. Evolution of
information and communication technologies (ICT) has created
the world where electronic business (E-Business), document
management systems (DMS) and enterprise resource planning
(ERP) solutions have become standard, even for micro, small
and medium enterprises (MSME) in developing countries.
Modern businesses focus on implementing data analysis,
business intelligence (BI) and even artificial intelligence (AI)
concepts in their everyday activities, thus the digitalization of
business activities is simply considered as default. Nevertheless,
public companies in developing countries fall behind and
struggle in this transformation process, as usual. Due to various
reasons, they are still in the phase of digitalization, rather than
implementing advanced solutions. Any organizational change
demands unfreezing and mindset redirection, among both
management and executors, which is always challenging,
especially in the public sector. This paper aims to explain the
preconditions and benefits of digital transition of the train
maintenance process, and key challenges in such transformation.
PB  - University of Maribor
C3  - 43 rd International Conference on Organizational Science Development Green and Digital Transition – Challenge or Opportunity
T1  - Digital Transition of the Maintenance Process: Case of Rail Transport Company
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7774
ER  - 

@conference{
author = "Todorović, Ivan and Jovanović, Milan and Krivokapić, Jovan and Milković, Dragan and Lučanin, Vojkan and Tanasković, Jovan",
year = "2024",
abstract = "Digital transformation of business activities has outgrown from
competitive advantage to necessity in recent years. Evolution of
information and communication technologies (ICT) has created
the world where electronic business (E-Business), document
management systems (DMS) and enterprise resource planning
(ERP) solutions have become standard, even for micro, small
and medium enterprises (MSME) in developing countries.
Modern businesses focus on implementing data analysis,
business intelligence (BI) and even artificial intelligence (AI)
concepts in their everyday activities, thus the digitalization of
business activities is simply considered as default. Nevertheless,
public companies in developing countries fall behind and
struggle in this transformation process, as usual. Due to various
reasons, they are still in the phase of digitalization, rather than
implementing advanced solutions. Any organizational change
demands unfreezing and mindset redirection, among both
management and executors, which is always challenging,
especially in the public sector. This paper aims to explain the
preconditions and benefits of digital transition of the train
maintenance process, and key challenges in such transformation.",
publisher = "University of Maribor",
journal = "43 rd International Conference on Organizational Science Development Green and Digital Transition – Challenge or Opportunity",
title = "Digital Transition of the Maintenance Process: Case of Rail Transport Company",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7774"
}

Todorović, I., Jovanović, M., Krivokapić, J., Milković, D., Lučanin, V.,& Tanasković, J.. (2024). Digital Transition of the Maintenance Process: Case of Rail Transport Company. in 43 rd International Conference on Organizational Science Development Green and Digital Transition – Challenge or Opportunity
University of Maribor..
https://hdl.handle.net/21.15107/rcub_machinery_7774

Todorović I, Jovanović M, Krivokapić J, Milković D, Lučanin V, Tanasković J. Digital Transition of the Maintenance Process: Case of Rail Transport Company. in 43 rd International Conference on Organizational Science Development Green and Digital Transition – Challenge or Opportunity. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7774 .

Todorović, Ivan, Jovanović, Milan, Krivokapić, Jovan, Milković, Dragan, Lučanin, Vojkan, Tanasković, Jovan, "Digital Transition of the Maintenance Process: Case of Rail Transport Company" in 43 rd International Conference on Organizational Science Development Green and Digital Transition – Challenge or Opportunity (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7774 .

TY  - CONF
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Đukić, Miloš
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7775
AB  - Failures in industrial plants, which operate under extreme conditions, could occur after a short time of exploitation. Erosion wear of materials is caused by the relative movement of solid particles and the surfaces of components. Such erosive wear can lead to the failure of industrial components in a very short time and/or a sharp decline in the structural integrity of industrial equipment. For example, the wear of the ash disposal system in a coal-burning thermal power plant, due to impact of ash particles with a high content of mineral residues, is a very common case of failure and outages in the operation of such industrial systems.
Two high chromium cast irons (HCCI) were tested to determine the erosion wear. These alloys contain 15% Cr and 25% Cr, and it was tested in as-cast and after heat treatment (annealing). A specially designed installation was used for the gas blast sand erosion test. Type of erodent was foundry quartz sand. Erosion tests were done with high erodent particle velocity (90 m/s) and high erodent feed rate (3000 g/min). This conditions represents those similar to extreme wear conditions of some components of thermal power plants using pulverized high mineral content coals.
Microstructural characterization was done at samples before and after erosion tests, Fig. 1. The main results indicate that matrix plastic deformation and distribution of carbide phase have a significant contribution to erosion resistance of HCCI alloys in such conditions.
PB  - Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade
PB  - Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
T1  - Erosion wear of HCCI alloys
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7775
ER  - 

@conference{
author = "Rajičić, Bratislav and Maslarević, Aleksandar and Bakić, Gordana and Maksimović, Vesna and Đukić, Miloš",
year = "2024",
abstract = "Failures in industrial plants, which operate under extreme conditions, could occur after a short time of exploitation. Erosion wear of materials is caused by the relative movement of solid particles and the surfaces of components. Such erosive wear can lead to the failure of industrial components in a very short time and/or a sharp decline in the structural integrity of industrial equipment. For example, the wear of the ash disposal system in a coal-burning thermal power plant, due to impact of ash particles with a high content of mineral residues, is a very common case of failure and outages in the operation of such industrial systems.
Two high chromium cast irons (HCCI) were tested to determine the erosion wear. These alloys contain 15% Cr and 25% Cr, and it was tested in as-cast and after heat treatment (annealing). A specially designed installation was used for the gas blast sand erosion test. Type of erodent was foundry quartz sand. Erosion tests were done with high erodent particle velocity (90 m/s) and high erodent feed rate (3000 g/min). This conditions represents those similar to extreme wear conditions of some components of thermal power plants using pulverized high mineral content coals.
Microstructural characterization was done at samples before and after erosion tests, Fig. 1. The main results indicate that matrix plastic deformation and distribution of carbide phase have a significant contribution to erosion resistance of HCCI alloys in such conditions.",
publisher = "Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade, Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions",
title = "Erosion wear of HCCI alloys",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7775"
}

Rajičić, B., Maslarević, A., Bakić, G., Maksimović, V.,& Đukić, M.. (2024). Erosion wear of HCCI alloys. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_7775

Rajičić B, Maslarević A, Bakić G, Maksimović V, Đukić M. Erosion wear of HCCI alloys. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7775 .

Rajičić, Bratislav, Maslarević, Aleksandar, Bakić, Gordana, Maksimović, Vesna, Đukić, Miloš, "Erosion wear of HCCI alloys" in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7775 .

TY  - CONF
AU  - Pavkov, Vladimir
AU  - Bakić, Gordana
AU  - Maksimović, Vesna
AU  - Cvijović-Alagić, Ivana
AU  - Maslarević, Aleksandar
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7769
AB  - The fracture of engineering materials is always an undesirable phenomenon, which primarily can endanger human lives, create economic losses, and lead to downtime and unavailability of mechanical parts. The main drawback that still prevents the broader use of ceramic and glass-ceramic materials is the tendency to brittle fracture due to extremely low toughness. Due to the appearance of cracks, the mechanical properties and structure of the material degrade irreversibly, which can lead to catastrophic failure of the mechanical element or construction. This drawback can be overcome by synthesizing novel composite materials with glass-ceramic matrix and metal reinforcement with improved fracture toughness.
This research examined two materials: a glass-ceramic material and a composite material based on glass-ceramic-metal. The glass-ceramic material is obtained from andesite basalt powder, while the glass ceramic-metal composite is made from the glass-ceramic matrix of andesite basalt powder and a metal reinforcement of stainless steel powder in the content of 20 wt%. The aggregate of andesite basalt from Serbia was used as the starting natural raw material for obtaining the glass-ceramic matrix. The austenitic stainless steel powder of the commercial grade Surfit TM 316L was used as a reinforcement. Both materials were obtained using powder metallurgy, which consisted of the following phases: crushing of andesite basalt aggregate, sieving of the stainless steel powder, homogenization of powder and binder, cold uniaxial pressing of the powder, cold isostatic pressing of green compact and sintering as the final phase to obtain a high-density solid sample.
The andesite basalt, and 316L stainless steel powder were characterized using a scanning electron microscope and X-ray diffraction method. The sintered samples of glass-ceramic and glass-ceramic-metal were characterized with an optical light microscope, scanning electron microscope, and Vickers hardness test.
Based on the obtained results, it can bu concluded that the presence of metallic particles in the glass-ceramic matrix leads to a slight decrease in hardness while contributing to an increase in the materials fracture toughness by about 33% [1]. During crack propagation in the glass-ceramic matrix, different crack particle interactions were observed: crack stops, deflects, or bridgings when encountering the spherical metal particle. These interaction phenomena and mechanisms of crack propagation in the glass-ceramic-metal composite lead to an increase of crack propagation resistance.
PB  - Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade
PB  - Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
T1  - The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7769
ER  - 

@conference{
author = "Pavkov, Vladimir and Bakić, Gordana and Maksimović, Vesna and Cvijović-Alagić, Ivana and Maslarević, Aleksandar and Rajičić, Bratislav and Milošević, Nenad",
year = "2024",
abstract = "The fracture of engineering materials is always an undesirable phenomenon, which primarily can endanger human lives, create economic losses, and lead to downtime and unavailability of mechanical parts. The main drawback that still prevents the broader use of ceramic and glass-ceramic materials is the tendency to brittle fracture due to extremely low toughness. Due to the appearance of cracks, the mechanical properties and structure of the material degrade irreversibly, which can lead to catastrophic failure of the mechanical element or construction. This drawback can be overcome by synthesizing novel composite materials with glass-ceramic matrix and metal reinforcement with improved fracture toughness.
This research examined two materials: a glass-ceramic material and a composite material based on glass-ceramic-metal. The glass-ceramic material is obtained from andesite basalt powder, while the glass ceramic-metal composite is made from the glass-ceramic matrix of andesite basalt powder and a metal reinforcement of stainless steel powder in the content of 20 wt%. The aggregate of andesite basalt from Serbia was used as the starting natural raw material for obtaining the glass-ceramic matrix. The austenitic stainless steel powder of the commercial grade Surfit TM 316L was used as a reinforcement. Both materials were obtained using powder metallurgy, which consisted of the following phases: crushing of andesite basalt aggregate, sieving of the stainless steel powder, homogenization of powder and binder, cold uniaxial pressing of the powder, cold isostatic pressing of green compact and sintering as the final phase to obtain a high-density solid sample.
The andesite basalt, and 316L stainless steel powder were characterized using a scanning electron microscope and X-ray diffraction method. The sintered samples of glass-ceramic and glass-ceramic-metal were characterized with an optical light microscope, scanning electron microscope, and Vickers hardness test.
Based on the obtained results, it can bu concluded that the presence of metallic particles in the glass-ceramic matrix leads to a slight decrease in hardness while contributing to an increase in the materials fracture toughness by about 33% [1]. During crack propagation in the glass-ceramic matrix, different crack particle interactions were observed: crack stops, deflects, or bridgings when encountering the spherical metal particle. These interaction phenomena and mechanisms of crack propagation in the glass-ceramic-metal composite lead to an increase of crack propagation resistance.",
publisher = "Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade, Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions",
title = "The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7769"
}

Pavkov, V., Bakić, G., Maksimović, V., Cvijović-Alagić, I., Maslarević, A., Rajičić, B.,& Milošević, N.. (2024). The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions
Vinča Institute of Nuclear Sciences - National Insittute of the Republic of Serbia, University of Belgrade..
https://hdl.handle.net/21.15107/rcub_machinery_7769

Pavkov V, Bakić G, Maksimović V, Cvijović-Alagić I, Maslarević A, Rajičić B, Milošević N. The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite. in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7769 .

Pavkov, Vladimir, Bakić, Gordana, Maksimović, Vesna, Cvijović-Alagić, Ivana, Maslarević, Aleksandar, Rajičić, Bratislav, Milošević, Nenad, "The influence of stainless steel particles reinforcement on the fracture toughness of glass-ceramic matrix composite" in Book of Abstracts - 2nd International Conference on Innovative Materials in Extreme COnditions (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7769 .

TY  - GEN
AU  - Obradović, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7767
T1  - О брахистохронных движениях твердых тел с различными ограничениями реакции связи
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7767
ER  - 

@misc{
author = "Obradović, Aleksandar",
year = "2024",
title = "О брахистохронных движениях твердых тел с различными ограничениями реакции связи",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7767"
}

Obradović, A.. (2024). О брахистохронных движениях твердых тел с различными ограничениями реакции связи. .
https://hdl.handle.net/21.15107/rcub_machinery_7767

Obradović A. О брахистохронных движениях твердых тел с различными ограничениями реакции связи. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7767 .

Obradović, Aleksandar, "О брахистохронных движениях твердых тел с различными ограничениями реакции связи" (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7767 .