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  - CONF
AU  - Jokić, Aleksandar
AU  - Petrović, Milica
AU  - Miljković, Zoran
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7804
AB  - The mass customization paradigm, in conjunction with high market demands, puts a
significant burden on contemporary production systems to output a larger quantity of
diversified parts. Consequently, production systems need to achieve even higher flexibility
levels through physical and functional reconfigurability. One way of achieving these high levels
of flexibility is by utilizing optimization of both scheduling and process planning. In this paper,
the authors propose to solve an NP-hard integrated process planning and scheduling
optimization problem with transportation constraints regarding one mobile robot. The proposed
production environment includes four types of flexibilities (process, sequence, machine, and
tool) that can be leveraged to optimize the entire manufacturing schedule. Three metaheuristic
optimization algorithms are compared on the nine-problem benchmark based on the makespan
metric. The proposed Mountain Gazelle Optimizer (MGO) is compared to the whale
optimization algorithm and particle swarm optimization algorithm. The experimental results
show that MGO achieves most best results, while it is highly comparable on the average best
results.
PB  - University of Belgrade - Technical Faculty in Bor
C3  - Proceedings of the 20th International May Conference on Strategic Management (IMCSM24), Smart miner Section, May 2024
T1  - Integrated Process Planning and Scheduling of Production Systems Based on Mountain Gazelle Optimizer
EP  - 151
IS  - Issue (1)
SP  - 142
VL  - XX
DO  - 10.5937/IMCSM24014J
ER  - 

@conference{
author = "Jokić, Aleksandar and Petrović, Milica and Miljković, Zoran",
year = "2024",
abstract = "The mass customization paradigm, in conjunction with high market demands, puts a
significant burden on contemporary production systems to output a larger quantity of
diversified parts. Consequently, production systems need to achieve even higher flexibility
levels through physical and functional reconfigurability. One way of achieving these high levels
of flexibility is by utilizing optimization of both scheduling and process planning. In this paper,
the authors propose to solve an NP-hard integrated process planning and scheduling
optimization problem with transportation constraints regarding one mobile robot. The proposed
production environment includes four types of flexibilities (process, sequence, machine, and
tool) that can be leveraged to optimize the entire manufacturing schedule. Three metaheuristic
optimization algorithms are compared on the nine-problem benchmark based on the makespan
metric. The proposed Mountain Gazelle Optimizer (MGO) is compared to the whale
optimization algorithm and particle swarm optimization algorithm. The experimental results
show that MGO achieves most best results, while it is highly comparable on the average best
results.",
publisher = "University of Belgrade - Technical Faculty in Bor",
journal = "Proceedings of the 20th International May Conference on Strategic Management (IMCSM24), Smart miner Section, May 2024",
title = "Integrated Process Planning and Scheduling of Production Systems Based on Mountain Gazelle Optimizer",
pages = "151-142",
number = "Issue (1)",
volume = "XX",
doi = "10.5937/IMCSM24014J"
}

Jokić, A., Petrović, M.,& Miljković, Z.. (2024). Integrated Process Planning and Scheduling of Production Systems Based on Mountain Gazelle Optimizer. in Proceedings of the 20th International May Conference on Strategic Management (IMCSM24), Smart miner Section, May 2024
University of Belgrade - Technical Faculty in Bor., XX(Issue (1)), 142-151.
https://doi.org/10.5937/IMCSM24014J

Jokić A, Petrović M, Miljković Z. Integrated Process Planning and Scheduling of Production Systems Based on Mountain Gazelle Optimizer. in Proceedings of the 20th International May Conference on Strategic Management (IMCSM24), Smart miner Section, May 2024. 2024;XX(Issue (1)):142-151.
doi:10.5937/IMCSM24014J .

Jokić, Aleksandar, Petrović, Milica, Miljković, Zoran, "Integrated Process Planning and Scheduling of Production Systems Based on Mountain Gazelle Optimizer" in Proceedings of the 20th International May Conference on Strategic Management (IMCSM24), Smart miner Section, May 2024, XX, no. Issue (1) (2024):142-151,
https://doi.org/10.5937/IMCSM24014J . .

TY  - JOUR
AU  - Ilić, Dejan
AU  - Janković, Novica
AU  - Čantrak, Đorđe
AU  - Savić, Ljubomir
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6994
AB  - In this paper are presented desing, testing and numerical analysis for two manufactured control valve trims. Valve trim is consisted of cage or dick stack, plug, stem and seat. Size from app. 15.88 mm (0.625 in) up to 101.6 mm (4 in) is suitable for 3D metal and plastic print, what is presented in this paper. Selective laser melting 3D metal printing is applied on the disc presented in this paper. Even better material properties from rest of the valve parts could be obtained. This is of great importance for valve retrofitting. In this paper is presented, also, new developed channel geometry, what is followed by various fluid flow phenomena. Measurement results for second prototype manufactured by 3D printing using plastics are presented in details. Here is shown, in short, procedure for determination of KV values of the test valves according to the EN 60534-2-3, Industrial-process control valves - Part 2-3: Flow capacity - Test procedures. In addition, some aspects of CFD calculations are presented.
PB  - VINČA Institute of Nuclear Sciences
T2  - Thermal Science
T1  - Experimental and numerical research of the flow inside the control valves trim
EP  - 587
IS  - 1B
SP  - 579
VL  - 28
DO  - 10.2298/TSCI230405157I
ER  - 

@article{
author = "Ilić, Dejan and Janković, Novica and Čantrak, Đorđe and Savić, Ljubomir",
year = "2024",
abstract = "In this paper are presented desing, testing and numerical analysis for two manufactured control valve trims. Valve trim is consisted of cage or dick stack, plug, stem and seat. Size from app. 15.88 mm (0.625 in) up to 101.6 mm (4 in) is suitable for 3D metal and plastic print, what is presented in this paper. Selective laser melting 3D metal printing is applied on the disc presented in this paper. Even better material properties from rest of the valve parts could be obtained. This is of great importance for valve retrofitting. In this paper is presented, also, new developed channel geometry, what is followed by various fluid flow phenomena. Measurement results for second prototype manufactured by 3D printing using plastics are presented in details. Here is shown, in short, procedure for determination of KV values of the test valves according to the EN 60534-2-3, Industrial-process control valves - Part 2-3: Flow capacity - Test procedures. In addition, some aspects of CFD calculations are presented.",
publisher = "VINČA Institute of Nuclear Sciences",
journal = "Thermal Science",
title = "Experimental and numerical research of the flow inside the control valves trim",
pages = "587-579",
number = "1B",
volume = "28",
doi = "10.2298/TSCI230405157I"
}

Ilić, D., Janković, N., Čantrak, Đ.,& Savić, L.. (2024). Experimental and numerical research of the flow inside the control valves trim. in Thermal Science
VINČA Institute of Nuclear Sciences., 28(1B), 579-587.
https://doi.org/10.2298/TSCI230405157I

Ilić D, Janković N, Čantrak Đ, Savić L. Experimental and numerical research of the flow inside the control valves trim. in Thermal Science. 2024;28(1B):579-587.
doi:10.2298/TSCI230405157I .

Ilić, Dejan, Janković, Novica, Čantrak, Đorđe, Savić, Ljubomir, "Experimental and numerical research of the flow inside the control valves trim" in Thermal Science, 28, no. 1B (2024):579-587,
https://doi.org/10.2298/TSCI230405157I . .

TY  - GEN
AU  - Obradović, Aleksandar
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7803
T1  - Применение принципа Понтрягина в задачах минимизации массы балки, испытывающей связанные изгибные, крутильные и продольные колебания
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7803
ER  - 

@misc{
author = "Obradović, Aleksandar",
year = "2024",
title = "Применение принципа Понтрягина в задачах минимизации массы балки, испытывающей связанные изгибные, крутильные и продольные колебания",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7803"
}

Obradović, A.. (2024). Применение принципа Понтрягина в задачах минимизации массы балки, испытывающей связанные изгибные, крутильные и продольные колебания. .
https://hdl.handle.net/21.15107/rcub_machinery_7803

Obradović A. Применение принципа Понтрягина в задачах минимизации массы балки, испытывающей связанные изгибные, крутильные и продольные колебания. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7803 .

Obradović, Aleksandar, "Применение принципа Понтрягина в задачах минимизации массы балки, испытывающей связанные изгибные, крутильные и продольные колебания" (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7803 .

TY  - CONF
AU  - Elek, Predrag
AU  - Marković, Miloš
AU  - Jevtić, Dejan
AU  - Đurović, Radovan
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7802
AB  - Shaped charge effect have been successfully used in various fields, including defense (anti-armor projectiles and warheads) and non-military (explosive demolitions, oil and natural gas industry) applications. The shaped charge mechanism relies on conversion of explosive charge detonation energy into kinetic energy of a hypervelocity metal penetrator, known as a jet [1]. The focus of the present research is on the jet interaction with the target material and consequent target penetration. 
Two approaches to the jet penetration depth determination are considered. The first is the well-known analytical model based on the virtual origin concept [2, 3]. The second approach is the numerical modeling of the penetration process. The commercial FEM based software Abaqus/Explicit has been used for simulations and the model formulation is described in detail. The complete process of the shaped charge jet formation and penetration is successfully simulated using the pure Eulerian approach with appropriate material models [4].
Comprehensive comparison between results obtained using various theoretical models (analytical and numerical) and experimental data has been made. The following process parameters are considered: jet tip velocity, jet diameter, target cavity diameter, penetration time and penetration depth (Fig. 1). The jet velocity gradient and jet evolution are carefully analyzed in order to provide evaluation of the position of the virtual origin in time-space coordinates (Fig. 2). Comparison of analytical and numerical model results in terms of the jet tip velocity, penetration velocity and penetration depth has been performed. In contrast to the theoretically constant ratio of penetration velocity to jet tip velocity, the simulation results show that this ratio is actually variable. Analytically determined penetration depth is about 10% higher than numerical evaluation. Generally, an acceptable correlation between analytical and numerical model results has been found, which nevertheless shows that an improvement of analytical models is needed.
PB  - Fraunhofer Institute for High Speed Dynamics, Ernst-Mach-Institut, EMI, Germany
C3  - Proceedings of the 4th International Conference on Impact Loading of Structures and Materials
T1  - Numerical and analytical modeling of a shaped charge penetration depth
EP  - 89
SP  - 88
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7802
ER  - 

@conference{
author = "Elek, Predrag and Marković, Miloš and Jevtić, Dejan and Đurović, Radovan",
year = "2024",
abstract = "Shaped charge effect have been successfully used in various fields, including defense (anti-armor projectiles and warheads) and non-military (explosive demolitions, oil and natural gas industry) applications. The shaped charge mechanism relies on conversion of explosive charge detonation energy into kinetic energy of a hypervelocity metal penetrator, known as a jet [1]. The focus of the present research is on the jet interaction with the target material and consequent target penetration. 
Two approaches to the jet penetration depth determination are considered. The first is the well-known analytical model based on the virtual origin concept [2, 3]. The second approach is the numerical modeling of the penetration process. The commercial FEM based software Abaqus/Explicit has been used for simulations and the model formulation is described in detail. The complete process of the shaped charge jet formation and penetration is successfully simulated using the pure Eulerian approach with appropriate material models [4].
Comprehensive comparison between results obtained using various theoretical models (analytical and numerical) and experimental data has been made. The following process parameters are considered: jet tip velocity, jet diameter, target cavity diameter, penetration time and penetration depth (Fig. 1). The jet velocity gradient and jet evolution are carefully analyzed in order to provide evaluation of the position of the virtual origin in time-space coordinates (Fig. 2). Comparison of analytical and numerical model results in terms of the jet tip velocity, penetration velocity and penetration depth has been performed. In contrast to the theoretically constant ratio of penetration velocity to jet tip velocity, the simulation results show that this ratio is actually variable. Analytically determined penetration depth is about 10% higher than numerical evaluation. Generally, an acceptable correlation between analytical and numerical model results has been found, which nevertheless shows that an improvement of analytical models is needed.",
publisher = "Fraunhofer Institute for High Speed Dynamics, Ernst-Mach-Institut, EMI, Germany",
journal = "Proceedings of the 4th International Conference on Impact Loading of Structures and Materials",
title = "Numerical and analytical modeling of a shaped charge penetration depth",
pages = "89-88",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7802"
}

Elek, P., Marković, M., Jevtić, D.,& Đurović, R.. (2024). Numerical and analytical modeling of a shaped charge penetration depth. in Proceedings of the 4th International Conference on Impact Loading of Structures and Materials
Fraunhofer Institute for High Speed Dynamics, Ernst-Mach-Institut, EMI, Germany., 88-89.
https://hdl.handle.net/21.15107/rcub_machinery_7802

Elek P, Marković M, Jevtić D, Đurović R. Numerical and analytical modeling of a shaped charge penetration depth. in Proceedings of the 4th International Conference on Impact Loading of Structures and Materials. 2024;:88-89.
https://hdl.handle.net/21.15107/rcub_machinery_7802 .

Elek, Predrag, Marković, Miloš, Jevtić, Dejan, Đurović, Radovan, "Numerical and analytical modeling of a shaped charge penetration depth" in Proceedings of the 4th International Conference on Impact Loading of Structures and Materials (2024):88-89,
https://hdl.handle.net/21.15107/rcub_machinery_7802 .

TY  - JOUR
AU  - Čolić, Katarina
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Milovanović, Aleksa
AU  - Milošević, Miloš
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7801
AB  - Research presented here involves numerical analysis of stresses in partial hip implant subjected to static loads, for two cases of patient weight. The numerical analysis requires the development of 3D models that would accurately repre-sent real partial hip implant geometry, hence a reverse engineering approach via 3D scanning is also included. This combined approach provides reliable insight into the behaviour of partial hip implants under static load, while also exposing certain issues related to the application of this specific implant geometry at higher weight levels.
T2  - STRUCTURAL INTEGRITY AND LIFE
T1  - NUMERICAL ANALYSIS OF STATIC STRESSES IN PARTIAL HIP IMPLANT
EP  - 20
IS  - 1
SP  - 17
VL  - 24
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7801
ER  - 

@article{
author = "Čolić, Katarina and Sedmak, Simon and Sedmak, Aleksandar and Milovanović, Aleksa and Milošević, Miloš",
year = "2024",
abstract = "Research presented here involves numerical analysis of stresses in partial hip implant subjected to static loads, for two cases of patient weight. The numerical analysis requires the development of 3D models that would accurately repre-sent real partial hip implant geometry, hence a reverse engineering approach via 3D scanning is also included. This combined approach provides reliable insight into the behaviour of partial hip implants under static load, while also exposing certain issues related to the application of this specific implant geometry at higher weight levels.",
journal = "STRUCTURAL INTEGRITY AND LIFE",
title = "NUMERICAL ANALYSIS OF STATIC STRESSES IN PARTIAL HIP IMPLANT",
pages = "20-17",
number = "1",
volume = "24",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7801"
}

Čolić, K., Sedmak, S., Sedmak, A., Milovanović, A.,& Milošević, M.. (2024). NUMERICAL ANALYSIS OF STATIC STRESSES IN PARTIAL HIP IMPLANT. in STRUCTURAL INTEGRITY AND LIFE, 24(1), 17-20.
https://hdl.handle.net/21.15107/rcub_machinery_7801

Čolić K, Sedmak S, Sedmak A, Milovanović A, Milošević M. NUMERICAL ANALYSIS OF STATIC STRESSES IN PARTIAL HIP IMPLANT. in STRUCTURAL INTEGRITY AND LIFE. 2024;24(1):17-20.
https://hdl.handle.net/21.15107/rcub_machinery_7801 .

Čolić, Katarina, Sedmak, Simon, Sedmak, Aleksandar, Milovanović, Aleksa, Milošević, Miloš, "NUMERICAL ANALYSIS OF STATIC STRESSES IN PARTIAL HIP IMPLANT" in STRUCTURAL INTEGRITY AND LIFE, 24, no. 1 (2024):17-20,
https://hdl.handle.net/21.15107/rcub_machinery_7801 .

TY  - JOUR
AU  - Alqahtani, H
AU  - Borges, C,F,
AU  - Đukić, Dušan
AU  - Mutavdžić Đukić, Rada
AU  - Reichel, Lothar
AU  - Spalević, Miodrag
PY  - 2024
UR  - https://www.sciencedirect.com/science/article/abs/pii/S0168927424000515
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7800
AB  - The evaluation of Gauss-type quadrature rules is an important topic in scientific computing. To determine estimates or bounds for the quadrature error of a Gauss rule often another related quadrature rule is evaluated, such as an associated Gauss-Radau or Gauss-Lobatto rule, an anti-Gauss rule, an averaged rule, an optimal averaged rule, or a Gauss-Kronrod rule when the latter exists. We discuss how pairs of a Gauss rule and a related Gauss-type quadrature rule can be computed efficiently by a divide-and-conquer method.
PB  - Elsevier
T2  - Applied Numerical Mathematics
T1  - Computation of pairs of related Gauss-type quadrature rules
DO  - 10.1016/j.apnum.2024.03.003
ER  - 

@article{
author = "Alqahtani, H and Borges, C,F, and Đukić, Dušan and Mutavdžić Đukić, Rada and Reichel, Lothar and Spalević, Miodrag",
year = "2024",
abstract = "The evaluation of Gauss-type quadrature rules is an important topic in scientific computing. To determine estimates or bounds for the quadrature error of a Gauss rule often another related quadrature rule is evaluated, such as an associated Gauss-Radau or Gauss-Lobatto rule, an anti-Gauss rule, an averaged rule, an optimal averaged rule, or a Gauss-Kronrod rule when the latter exists. We discuss how pairs of a Gauss rule and a related Gauss-type quadrature rule can be computed efficiently by a divide-and-conquer method.",
publisher = "Elsevier",
journal = "Applied Numerical Mathematics",
title = "Computation of pairs of related Gauss-type quadrature rules",
doi = "10.1016/j.apnum.2024.03.003"
}

Alqahtani, H., Borges, C., Đukić, D., Mutavdžić Đukić, R., Reichel, L.,& Spalević, M.. (2024). Computation of pairs of related Gauss-type quadrature rules. in Applied Numerical Mathematics
Elsevier..
https://doi.org/10.1016/j.apnum.2024.03.003

Alqahtani H, Borges C, Đukić D, Mutavdžić Đukić R, Reichel L, Spalević M. Computation of pairs of related Gauss-type quadrature rules. in Applied Numerical Mathematics. 2024;.
doi:10.1016/j.apnum.2024.03.003 .

Alqahtani, H, Borges, C,F,, Đukić, Dušan, Mutavdžić Đukić, Rada, Reichel, Lothar, Spalević, Miodrag, "Computation of pairs of related Gauss-type quadrature rules" in Applied Numerical Mathematics (2024),
https://doi.org/10.1016/j.apnum.2024.03.003 . .

TY  - JOUR
AU  - Đurić, Slavko
AU  - Aranđelović, Ivan
AU  - Milotić, Milan
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7799
AB  - The paper proposes an approximate solution to the classical (parabolic) multidimensional 2D and 3D heat conduction equation for a 5 × 5 cm aluminium plate and a 5 × 5 × 5 cm aluminum cube. An approximate solution of the generalized (hyperbolic) 2D and 3D equation for the considered plate and cube is also proposed. Approximate solutions were obtained by applying calculus of variations and Euler-Lagrange equations. In order to verify the correctness of the proposed approximate solutions, they were compared with the exact solutions of parabolic and hyperbolic equations. The paper also presents the research on the influence of time parameters τ as well as the relaxation times τ∗ to the variation of the profile of the temperature field for the considered aluminum plate and cube.
PB  - Scientific Research Publishing
T2  - Journal of Applied Mathematics and Physics, 2024, 12, 1383-1400
T1  - Variational Approach to 2D and 3D Heat Conduction Modeling
EP  - 1400
IS  - 4
SP  - 1383
VL  - 12
DO  - 10.4236/jamp.2024.124085
ER  - 

@article{
author = "Đurić, Slavko and Aranđelović, Ivan and Milotić, Milan",
year = "2024",
abstract = "The paper proposes an approximate solution to the classical (parabolic) multidimensional 2D and 3D heat conduction equation for a 5 × 5 cm aluminium plate and a 5 × 5 × 5 cm aluminum cube. An approximate solution of the generalized (hyperbolic) 2D and 3D equation for the considered plate and cube is also proposed. Approximate solutions were obtained by applying calculus of variations and Euler-Lagrange equations. In order to verify the correctness of the proposed approximate solutions, they were compared with the exact solutions of parabolic and hyperbolic equations. The paper also presents the research on the influence of time parameters τ as well as the relaxation times τ∗ to the variation of the profile of the temperature field for the considered aluminum plate and cube.",
publisher = "Scientific Research Publishing",
journal = "Journal of Applied Mathematics and Physics, 2024, 12, 1383-1400",
title = "Variational Approach to 2D and 3D Heat Conduction Modeling",
pages = "1400-1383",
number = "4",
volume = "12",
doi = "10.4236/jamp.2024.124085"
}

Đurić, S., Aranđelović, I.,& Milotić, M.. (2024). Variational Approach to 2D and 3D Heat Conduction Modeling. in Journal of Applied Mathematics and Physics, 2024, 12, 1383-1400
Scientific Research Publishing., 12(4), 1383-1400.
https://doi.org/10.4236/jamp.2024.124085

Đurić S, Aranđelović I, Milotić M. Variational Approach to 2D and 3D Heat Conduction Modeling. in Journal of Applied Mathematics and Physics, 2024, 12, 1383-1400. 2024;12(4):1383-1400.
doi:10.4236/jamp.2024.124085 .

Đurić, Slavko, Aranđelović, Ivan, Milotić, Milan, "Variational Approach to 2D and 3D Heat Conduction Modeling" in Journal of Applied Mathematics and Physics, 2024, 12, 1383-1400, 12, no. 4 (2024):1383-1400,
https://doi.org/10.4236/jamp.2024.124085 . .

TY  - JOUR
AU  - Petronić, Sanja
AU  - Jarić, Marko
AU  - Stević, Zoran
AU  - Maslarević, Aleksandar
AU  - Vasović, Ivana
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7798
AB  - The paper presents a detailed description of the oil rectification process used in upstream oil and gas plants, including the significant equipment involved. One such equipment highlighted in the study is a pressure vessel utilized as a separator to separate the liquid and gas phases. This pressure vessel has been in operation for over two decades. A thorough examination of the mentioned pressure equipment was conducted during the process evaluation. It was discovered that the internal side of the vessel, particularly its back elliptical head, had suffered extensive damage due to erosion and corrosion, emerging as the most significant cause of the deterioration. The application of RBI-estimation revealed that the vessel falls under the category of highly risk equipment, and there is a significant risk of both environmental and financial consequences associated with its potential failure (leakage). Such failure is anticipated to occur promptly in the area below the wear plate of the vessel's nozzle.
PB  - Elsevier
T2  - International Journal of Pressure Vessels and Piping
T1  - Analysis of remaining life assessment of three-phase gravity separator for oil rectification with the simultaneous usean RBI matrix
SP  - 105206
VL  - 209
DO  - 10.1016/j.ijpvp.2024
ER  - 

@article{
author = "Petronić, Sanja and Jarić, Marko and Stević, Zoran and Maslarević, Aleksandar and Vasović, Ivana",
year = "2024",
abstract = "The paper presents a detailed description of the oil rectification process used in upstream oil and gas plants, including the significant equipment involved. One such equipment highlighted in the study is a pressure vessel utilized as a separator to separate the liquid and gas phases. This pressure vessel has been in operation for over two decades. A thorough examination of the mentioned pressure equipment was conducted during the process evaluation. It was discovered that the internal side of the vessel, particularly its back elliptical head, had suffered extensive damage due to erosion and corrosion, emerging as the most significant cause of the deterioration. The application of RBI-estimation revealed that the vessel falls under the category of highly risk equipment, and there is a significant risk of both environmental and financial consequences associated with its potential failure (leakage). Such failure is anticipated to occur promptly in the area below the wear plate of the vessel's nozzle.",
publisher = "Elsevier",
journal = "International Journal of Pressure Vessels and Piping",
title = "Analysis of remaining life assessment of three-phase gravity separator for oil rectification with the simultaneous usean RBI matrix",
pages = "105206",
volume = "209",
doi = "10.1016/j.ijpvp.2024"
}

Petronić, S., Jarić, M., Stević, Z., Maslarević, A.,& Vasović, I.. (2024). Analysis of remaining life assessment of three-phase gravity separator for oil rectification with the simultaneous usean RBI matrix. in International Journal of Pressure Vessels and Piping
Elsevier., 209, 105206.
https://doi.org/10.1016/j.ijpvp.2024

Petronić S, Jarić M, Stević Z, Maslarević A, Vasović I. Analysis of remaining life assessment of three-phase gravity separator for oil rectification with the simultaneous usean RBI matrix. in International Journal of Pressure Vessels and Piping. 2024;209:105206.
doi:10.1016/j.ijpvp.2024 .

Petronić, Sanja, Jarić, Marko, Stević, Zoran, Maslarević, Aleksandar, Vasović, Ivana, "Analysis of remaining life assessment of three-phase gravity separator for oil rectification with the simultaneous usean RBI matrix" in International Journal of Pressure Vessels and Piping, 209 (2024):105206,
https://doi.org/10.1016/j.ijpvp.2024 . .

TY  - JOUR
AU  - Momčilović, Nikola
AU  - Ilić, Nemanja
AU  - Kalajdžić, Milan
AU  - Ivošević, Špiro
AU  - Petrović, Ana
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7797
AB  - Standard structural assessments of ship hulls include the evaluation of the elastic structural response. Elastic analysis neglects extreme and unpredicted loadings, which can produce catastrophic outcomes, such as the loss of the ship’s ultimate strength. Moreover, hull elements are considered unaffected by age-related degradation. Therefore, this study models and quantifies the effect of corrosion-induced structural degradation on the ultimate strength of a high-tensile-steel (HTS) cargo ship using progressive collapse and nonlinear finite element methods. Uniform and pitting corrosion are modeled through selected scenarios, which hull elements might encounter during exploitation, producing a total of 148 calculation models. The findings show that corrosion-induced degradation can significantly decrease the ultimate strength of the hull (up to 30% for the most severe scenarios assessed). Furthermore, ultimate strength decreases almost proportionally to the amount of wastage considered. It was found that stiffener corrosion has a significant effect on the total ultimate strength. This study’s aim is to emphasize the vast importance of including ultimate strength along with ageing effects in industry-standard structural assessments of large HTS ship structures, designed to last for several decades whilst exposed to excessive and unpredicted bending moments.
PB  - MDPI
T2  - Journal of Marine Science and Engineering
T1  - Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull
IS  - 5
SP  - 745
VL  - 12
DO  - 10.3390/jmse12050745
ER  - 

@article{
author = "Momčilović, Nikola and Ilić, Nemanja and Kalajdžić, Milan and Ivošević, Špiro and Petrović, Ana",
year = "2024",
abstract = "Standard structural assessments of ship hulls include the evaluation of the elastic structural response. Elastic analysis neglects extreme and unpredicted loadings, which can produce catastrophic outcomes, such as the loss of the ship’s ultimate strength. Moreover, hull elements are considered unaffected by age-related degradation. Therefore, this study models and quantifies the effect of corrosion-induced structural degradation on the ultimate strength of a high-tensile-steel (HTS) cargo ship using progressive collapse and nonlinear finite element methods. Uniform and pitting corrosion are modeled through selected scenarios, which hull elements might encounter during exploitation, producing a total of 148 calculation models. The findings show that corrosion-induced degradation can significantly decrease the ultimate strength of the hull (up to 30% for the most severe scenarios assessed). Furthermore, ultimate strength decreases almost proportionally to the amount of wastage considered. It was found that stiffener corrosion has a significant effect on the total ultimate strength. This study’s aim is to emphasize the vast importance of including ultimate strength along with ageing effects in industry-standard structural assessments of large HTS ship structures, designed to last for several decades whilst exposed to excessive and unpredicted bending moments.",
publisher = "MDPI",
journal = "Journal of Marine Science and Engineering",
title = "Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull",
number = "5",
pages = "745",
volume = "12",
doi = "10.3390/jmse12050745"
}

Momčilović, N., Ilić, N., Kalajdžić, M., Ivošević, Š.,& Petrović, A.. (2024). Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull. in Journal of Marine Science and Engineering
MDPI., 12(5), 745.
https://doi.org/10.3390/jmse12050745

Momčilović N, Ilić N, Kalajdžić M, Ivošević Š, Petrović A. Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull. in Journal of Marine Science and Engineering. 2024;12(5):745.
doi:10.3390/jmse12050745 .

Momčilović, Nikola, Ilić, Nemanja, Kalajdžić, Milan, Ivošević, Špiro, Petrović, Ana, "Effect of Corrosion-Induced Structural Degradation on the Ultimate Strength of a High-Tensile-Steel Ship Hull" in Journal of Marine Science and Engineering, 12, no. 5 (2024):745,
https://doi.org/10.3390/jmse12050745 . .

TY  - CONF
AU  - Spasojević Brkić, Vesna
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7795
AB  - Although the mining industry is the oldest one, it is still a major source of pollution with more people hurt or injured than in any other industry, while social conflicts around it are worldwide spread. Namely, mining projects still have direct and indirect environmental impacts and seriously affect land, water, air, biota, and people, while mining equipment focused in this paper has the highest footprint. The reason for the lack of progress in mining industry is the most likely the fact that in current research streams technology-centered design dominates. Our novel Smart Miner concept aims to create a step toward smart, ergonomic and sustainable mining machinery workplaces. It proposes a paradigm shift from pure technology to a Human and Data-Centric Engineering, which could be easily transferred to other industries, and develops solutions for raising the level of environmental quality in complex interactions between phys- ical, behavioral and organizational processes field, by matching advanced operator I4.0&5.0 and society S5.0 standards.

An original idea approval route starts with mining machinery operator wellbeing in its microenvironment and its cyclical alignment with stakeholders in the value chain. After development of smart, ergonomic, non-invasive and reliable operator aid systems for regulation of physical environment job stressors - noise, human vibration, lighting, temperature, air quality, workplace layout issues etc., which solve environmental and human health issues and influence overall performance, research passes to operator macroenvironment determined by organizational contextual factors, which also impair sustainable development results. Micro and macro levels are planned to be connected and balanced by real time analytics to fit high sustainability performance indicators in novel, flexible and scalable system, aimed to increasing productivity and production together with reducing emissions and decrease of accidents rate.
PB  - Pages
C3  - 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany
T1  - A Step Towards Smart, Ergonomic and Sustainable Mining Machinery Workplaces
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7795
ER  - 

@conference{
author = "Spasojević Brkić, Vesna",
year = "2024",
abstract = "Although the mining industry is the oldest one, it is still a major source of pollution with more people hurt or injured than in any other industry, while social conflicts around it are worldwide spread. Namely, mining projects still have direct and indirect environmental impacts and seriously affect land, water, air, biota, and people, while mining equipment focused in this paper has the highest footprint. The reason for the lack of progress in mining industry is the most likely the fact that in current research streams technology-centered design dominates. Our novel Smart Miner concept aims to create a step toward smart, ergonomic and sustainable mining machinery workplaces. It proposes a paradigm shift from pure technology to a Human and Data-Centric Engineering, which could be easily transferred to other industries, and develops solutions for raising the level of environmental quality in complex interactions between phys- ical, behavioral and organizational processes field, by matching advanced operator I4.0&5.0 and society S5.0 standards.

An original idea approval route starts with mining machinery operator wellbeing in its microenvironment and its cyclical alignment with stakeholders in the value chain. After development of smart, ergonomic, non-invasive and reliable operator aid systems for regulation of physical environment job stressors - noise, human vibration, lighting, temperature, air quality, workplace layout issues etc., which solve environmental and human health issues and influence overall performance, research passes to operator macroenvironment determined by organizational contextual factors, which also impair sustainable development results. Micro and macro levels are planned to be connected and balanced by real time analytics to fit high sustainability performance indicators in novel, flexible and scalable system, aimed to increasing productivity and production together with reducing emissions and decrease of accidents rate.",
publisher = "Pages",
journal = "2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany",
title = "A Step Towards Smart, Ergonomic and Sustainable Mining Machinery Workplaces",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7795"
}

Spasojević Brkić, V.. (2024). A Step Towards Smart, Ergonomic and Sustainable Mining Machinery Workplaces. in 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany
Pages..
https://hdl.handle.net/21.15107/rcub_machinery_7795

Spasojević Brkić V. A Step Towards Smart, Ergonomic and Sustainable Mining Machinery Workplaces. in 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7795 .

Spasojević Brkić, Vesna, "A Step Towards Smart, Ergonomic and Sustainable Mining Machinery Workplaces" in 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7795 .

Brkić, A., Spasojević Brkić, V., Mihajlović, I., Misita, M., Đurić, G., Bugarić, U.,& Stević, Ž.. (2024). Контекстуални адаптивни систем за митигацију ризика рада рударских машина. in Odluka Matičnog odbora od 29.03.2024. o kategorizaciji M81- Novo tehničko rešenje primenjeno na međunarodnom nivou.
https://hdl.handle.net/21.15107/rcub_machinery_7796

Brkić A, Spasojević Brkić V, Mihajlović I, Misita M, Đurić G, Bugarić U, Stević Ž. Контекстуални адаптивни систем за митигацију ризика рада рударских машина. in Odluka Matičnog odbora od 29.03.2024. o kategorizaciji M81- Novo tehničko rešenje primenjeno na međunarodnom nivou. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7796 .

Brkić, Aleksandar, Spasojević Brkić, Vesna, Mihajlović, Ivan, Misita, Mirjana, Đurić, Goran, Bugarić, Uglješa, Stević, Željko, "Контекстуални адаптивни систем за митигацију ризика рада рударских машина" in Odluka Matičnog odbora od 29.03.2024. o kategorizaciji M81- Novo tehničko rešenje primenjeno na međunarodnom nivou (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7796 .

TY  - CONF
AU  - Dimić Mišić, Katarina
AU  - Brkić, Aleksandar
AU  - Spasojević Brkić, Vesna
AU  - Barcelo Rodrigez, Ernest
AU  - Imani, Monir
AU  - Gane, Patrick
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7794
AB  - Quality of air in the cabin of transportation vehicle is of high importance due to increase in globalization that hinders rise of transportation of goods worldwide. The largest source of streets pollution in urban areas is vehicular combustion, constituted mainly of gaseous pollutants such as CO2, CO, oxides of nitrogen (NOx), ozone, and particles such as ultra-fine particulate matter (UFP). Drivers of heavy-duty vehicles (HDV) are spending both their working and free time in vehicle cabins, making then highly exposed to toxic gases and hazardous aerosols. Intensive industrial development is more concentrated in metropolitan areas, and since it still relies on fossil fuels energy, it results in high pollution of air with traf- fic-related air pollutants (TRAPs). Primary sources of UFPs in the urban environment near road sites are caused by HDV, and they enter cabin air through windows, accumulating in the cabin air and on the surfaces, resulting of up to three times higher concentration of TRAPs in cabin than outdoor air. Exposures to high CO2, NOx and UFP can significantly reduce decision-making performance and is main cause of premature deaths of HDV drivers. Sedimentation of UFP onto filter surfaces, long filter exposure times, and high temperatures within cabins cause decrease of air-flow within the filter and drastic decrease of filtering efficiency. By combining experimental results obtained from in-filed measurements performed in the city of Belgrade, during peak traffic hours, for filtration systems (AFS) placed at different positions within the cabins, obtained master present role of air filtration systems. Using analytical approach of experimental results, we propose mathematical model that describes AFS efficiency on cabin pollution mitigation. Predicted results are in close agreement with the experimental data showing that outdoor to cabin pollutants concentration is possible to estimate as it depends on and terrain design, filtration time and thermodynamic parameters within cabin. We hope that this research rises organizational attention to the health and welfare of HDV drivers.
PB  - Pages
C3  - 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany
T1  - Filtering Efficiency of Pollutants in Heavy-Duty Vehicle Cabins
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7794
ER  - 

@conference{
author = "Dimić Mišić, Katarina and Brkić, Aleksandar and Spasojević Brkić, Vesna and Barcelo Rodrigez, Ernest and Imani, Monir and Gane, Patrick",
year = "2024",
abstract = "Quality of air in the cabin of transportation vehicle is of high importance due to increase in globalization that hinders rise of transportation of goods worldwide. The largest source of streets pollution in urban areas is vehicular combustion, constituted mainly of gaseous pollutants such as CO2, CO, oxides of nitrogen (NOx), ozone, and particles such as ultra-fine particulate matter (UFP). Drivers of heavy-duty vehicles (HDV) are spending both their working and free time in vehicle cabins, making then highly exposed to toxic gases and hazardous aerosols. Intensive industrial development is more concentrated in metropolitan areas, and since it still relies on fossil fuels energy, it results in high pollution of air with traf- fic-related air pollutants (TRAPs). Primary sources of UFPs in the urban environment near road sites are caused by HDV, and they enter cabin air through windows, accumulating in the cabin air and on the surfaces, resulting of up to three times higher concentration of TRAPs in cabin than outdoor air. Exposures to high CO2, NOx and UFP can significantly reduce decision-making performance and is main cause of premature deaths of HDV drivers. Sedimentation of UFP onto filter surfaces, long filter exposure times, and high temperatures within cabins cause decrease of air-flow within the filter and drastic decrease of filtering efficiency. By combining experimental results obtained from in-filed measurements performed in the city of Belgrade, during peak traffic hours, for filtration systems (AFS) placed at different positions within the cabins, obtained master present role of air filtration systems. Using analytical approach of experimental results, we propose mathematical model that describes AFS efficiency on cabin pollution mitigation. Predicted results are in close agreement with the experimental data showing that outdoor to cabin pollutants concentration is possible to estimate as it depends on and terrain design, filtration time and thermodynamic parameters within cabin. We hope that this research rises organizational attention to the health and welfare of HDV drivers.",
publisher = "Pages",
journal = "2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany",
title = "Filtering Efficiency of Pollutants in Heavy-Duty Vehicle Cabins",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7794"
}

Dimić Mišić, K., Brkić, A., Spasojević Brkić, V., Barcelo Rodrigez, E., Imani, M.,& Gane, P.. (2024). Filtering Efficiency of Pollutants in Heavy-Duty Vehicle Cabins. in 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany
Pages..
https://hdl.handle.net/21.15107/rcub_machinery_7794

Dimić Mišić K, Brkić A, Spasojević Brkić V, Barcelo Rodrigez E, Imani M, Gane P. Filtering Efficiency of Pollutants in Heavy-Duty Vehicle Cabins. in 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany. 2024;.
https://hdl.handle.net/21.15107/rcub_machinery_7794 .

Dimić Mišić, Katarina, Brkić, Aleksandar, Spasojević Brkić, Vesna, Barcelo Rodrigez, Ernest, Imani, Monir, Gane, Patrick, "Filtering Efficiency of Pollutants in Heavy-Duty Vehicle Cabins" in 2nd International Conference on Renewable and Non-Renewable Energy & International Conference on Mechanical and Mechatronics Engineering April 22-23, 2024 | Munich, Germany (2024),
https://hdl.handle.net/21.15107/rcub_machinery_7794 .

TY  - CONF
AU  - Zivković, Nikola
AU  - Vidaković, Jelena
AU  - Dević, Andrija
AU  - Lazarević, Mihailo
AU  - Lazarevic, Ilija
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7792
AB  - Industrial robot programming can be a challenging
task, especially in today's age, where robots are more widespread
outside the large manufacturing companies, but rather in small
and medium enterprises where users are not necessarily fully
qualified individuals. The Extended Reality technologies may be
the ongoing answer to improved robot programming experience.
Current solutions for robot programming using Extended Reality
technologies are explored in this overview. In this paper, a
summarized description of certain solutions is given, focusing on
how are the XR technologies utilized in developing the robot
programming systems. Categorization by devices and motion
planners used is also given.
PB  - Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet
C3  - Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024
T1  - An overview of XR technologies usage for industrial robot programming
EP  - 221
SP  - 218
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7792
ER  - 

@conference{
author = "Zivković, Nikola and Vidaković, Jelena and Dević, Andrija and Lazarević, Mihailo and Lazarevic, Ilija",
year = "2024",
abstract = "Industrial robot programming can be a challenging
task, especially in today's age, where robots are more widespread
outside the large manufacturing companies, but rather in small
and medium enterprises where users are not necessarily fully
qualified individuals. The Extended Reality technologies may be
the ongoing answer to improved robot programming experience.
Current solutions for robot programming using Extended Reality
technologies are explored in this overview. In this paper, a
summarized description of certain solutions is given, focusing on
how are the XR technologies utilized in developing the robot
programming systems. Categorization by devices and motion
planners used is also given.",
publisher = "Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet",
journal = "Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024",
title = "An overview of XR technologies usage for industrial robot programming",
pages = "221-218",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7792"
}

Zivković, N., Vidaković, J., Dević, A., Lazarević, M.,& Lazarevic, I.. (2024). An overview of XR technologies usage for industrial robot programming. in Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024
Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet., 218-221.
https://hdl.handle.net/21.15107/rcub_machinery_7792

Zivković N, Vidaković J, Dević A, Lazarević M, Lazarevic I. An overview of XR technologies usage for industrial robot programming. in Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024. 2024;:218-221.
https://hdl.handle.net/21.15107/rcub_machinery_7792 .

Zivković, Nikola, Vidaković, Jelena, Dević, Andrija, Lazarević, Mihailo, Lazarevic, Ilija, "An overview of XR technologies usage for industrial robot programming" in Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024 (2024):218-221,
https://hdl.handle.net/21.15107/rcub_machinery_7792 .

TY  - CONF
AU  - Vidaković, Jelena
AU  - Dević, Andrija
AU  - Zivković, Nikola
AU  - Kvrgić, Vladimir
AU  - Lazarević, Mihailo
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7791
AB  - In this paper, the implementation of the solution of the
inverse kinematics problem for the 6DoF industrial robot arm in
the Unity game engine is presented. Unity, one of the most
popular game engines, is a very powerful tool and a leading
platform for creating XR applications. Two different methods for
the implementation of the solution of the inverse kinematics
problem have been proposed: 1) Development and
implementation of the inverse kinematics algorithm of a specific
robot, and 2) Using inverse kinematics solvers by integration of
Unity with dedicated robotics development frameworks. For
verification of the proposed procedures, a serial robot with
cylindrical joints RL15 is used.
PB  - Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet
C3  - Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024
T1  - Implementation of inverse kinematics algorithm for 6DoF robot arm in Unity
EP  - 64
SP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7791
ER  - 

@conference{
author = "Vidaković, Jelena and Dević, Andrija and Zivković, Nikola and Kvrgić, Vladimir and Lazarević, Mihailo",
year = "2024",
abstract = "In this paper, the implementation of the solution of the
inverse kinematics problem for the 6DoF industrial robot arm in
the Unity game engine is presented. Unity, one of the most
popular game engines, is a very powerful tool and a leading
platform for creating XR applications. Two different methods for
the implementation of the solution of the inverse kinematics
problem have been proposed: 1) Development and
implementation of the inverse kinematics algorithm of a specific
robot, and 2) Using inverse kinematics solvers by integration of
Unity with dedicated robotics development frameworks. For
verification of the proposed procedures, a serial robot with
cylindrical joints RL15 is used.",
publisher = "Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet",
journal = "Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024",
title = "Implementation of inverse kinematics algorithm for 6DoF robot arm in Unity",
pages = "64-60",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7791"
}

Vidaković, J., Dević, A., Zivković, N., Kvrgić, V.,& Lazarević, M.. (2024). Implementation of inverse kinematics algorithm for 6DoF robot arm in Unity. in Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024
Univerzitet u Istočnom Sarajevu, Elektrotehnički fakultet., 60-64.
https://hdl.handle.net/21.15107/rcub_machinery_7791

Vidaković J, Dević A, Zivković N, Kvrgić V, Lazarević M. Implementation of inverse kinematics algorithm for 6DoF robot arm in Unity. in Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024. 2024;:60-64.
https://hdl.handle.net/21.15107/rcub_machinery_7791 .

Vidaković, Jelena, Dević, Andrija, Zivković, Nikola, Kvrgić, Vladimir, Lazarević, Mihailo, "Implementation of inverse kinematics algorithm for 6DoF robot arm in Unity" in Zbornik  radova  23rd International Symposium INFOTEH-JAHORINA, 20-22 March 2024 (2024):60-64,
https://hdl.handle.net/21.15107/rcub_machinery_7791 .

TY  - CONF
AU  - Mitrović, Aleksandra
AU  - Mitrović, Nenad
AU  - Kreculj, Dragan
AU  - Ratković Kovačević, Nada
AU  - Dihovicni, Djordje
AU  - Ilić, Ivana
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7742
AB  - Today, the waste material obtained by 3D printing operations presents significant challenges due to the increasing global adoption of this technology, leading to serious environmental implications. The generation of plastic waste from unsuccessful prints and end-of-life products is a growing concern, impacting the circular economy. With a 26% annual growth rate in additive manufacturing, the amount of waste is rapidly increasing, necessitating effective waste management strategies. However, 3D printing offers advantages in waste reduction compared to 
traditional manufacturing methods, with only 40% waste generation compared to subtractive technologies and much of the waste being recyclable. The challenges of waste material obtained by 3D printing are numerous and require a comprehensive approach to waste management and recycling. Moreover, leveraging the abundant opportunities for reusing materials and developing sustainable composite filaments, 3D printing can contribute to environmental sustainability and the principles of circular economy.
PB  - Conference of Academies for Applied Studies in Serbia (CAASS)
C3  - International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
T1  - Challenges with Waste Material Obtained by 3D Printing
EP  - 421
SP  - 417
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7742
ER  - 

@conference{
author = "Mitrović, Aleksandra and Mitrović, Nenad and Kreculj, Dragan and Ratković Kovačević, Nada and Dihovicni, Djordje and Ilić, Ivana",
year = "2024",
abstract = "Today, the waste material obtained by 3D printing operations presents significant challenges due to the increasing global adoption of this technology, leading to serious environmental implications. The generation of plastic waste from unsuccessful prints and end-of-life products is a growing concern, impacting the circular economy. With a 26% annual growth rate in additive manufacturing, the amount of waste is rapidly increasing, necessitating effective waste management strategies. However, 3D printing offers advantages in waste reduction compared to 
traditional manufacturing methods, with only 40% waste generation compared to subtractive technologies and much of the waste being recyclable. The challenges of waste material obtained by 3D printing are numerous and require a comprehensive approach to waste management and recycling. Moreover, leveraging the abundant opportunities for reusing materials and developing sustainable composite filaments, 3D printing can contribute to environmental sustainability and the principles of circular economy.",
publisher = "Conference of Academies for Applied Studies in Serbia (CAASS)",
journal = "International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024",
title = "Challenges with Waste Material Obtained by 3D Printing",
pages = "421-417",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7742"
}

Mitrović, A., Mitrović, N., Kreculj, D., Ratković Kovačević, N., Dihovicni, D.,& Ilić, I.. (2024). Challenges with Waste Material Obtained by 3D Printing. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
Conference of Academies for Applied Studies in Serbia (CAASS)., 417-421.
https://hdl.handle.net/21.15107/rcub_machinery_7742

Mitrović A, Mitrović N, Kreculj D, Ratković Kovačević N, Dihovicni D, Ilić I. Challenges with Waste Material Obtained by 3D Printing. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024. 2024;:417-421.
https://hdl.handle.net/21.15107/rcub_machinery_7742 .

Mitrović, Aleksandra, Mitrović, Nenad, Kreculj, Dragan, Ratković Kovačević, Nada, Dihovicni, Djordje, Ilić, Ivana, "Challenges with Waste Material Obtained by 3D Printing" in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024 (2024):417-421,
https://hdl.handle.net/21.15107/rcub_machinery_7742 .

TY  - CONF
AU  - Mitrović, Aleksandra
AU  - Mitrović, Nenad
AU  - Kreculj, Dragan
AU  - Reljić, Mirjana
PY  - 2024
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7741
AB  - Eco-art and recycling initiatives often involve comprehensive community engagement and participation in specific conditions. This paper explores the synergy between eco-art and recycling processes, as an optimal strategy to advance environmental preservation, alongside the integration of land art with ecological concepts. As environmental concerns escalate, the integration of ecoartistic measures and practices with recycling initiatives emerges as a potential to enhance environmental consciousness and sustainability. The study delves into the interconnectedness of these two disciplines, examining how the creative expression of eco-art can amplify the impact of recycling efforts and activities, leading to heightened environmental awareness and conservation. By detailed examination of the intersections of these creative and ecological disciplines, the research aims to contribute insights into innovative approaches that simultaneously harmonize artistic expression and environmental conservation aspect, with the final important task of protecting our planet and ensuring sustainable development.
PB  - Conference of Academies for Applied Studies in Serbia (CAASS)
C3  - International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
T1  - Merging Eco-Art and Recycling to Advance Environmental Preservation
EP  - 416
SP  - 412
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7741
ER  - 

@conference{
author = "Mitrović, Aleksandra and Mitrović, Nenad and Kreculj, Dragan and Reljić, Mirjana",
year = "2024",
abstract = "Eco-art and recycling initiatives often involve comprehensive community engagement and participation in specific conditions. This paper explores the synergy between eco-art and recycling processes, as an optimal strategy to advance environmental preservation, alongside the integration of land art with ecological concepts. As environmental concerns escalate, the integration of ecoartistic measures and practices with recycling initiatives emerges as a potential to enhance environmental consciousness and sustainability. The study delves into the interconnectedness of these two disciplines, examining how the creative expression of eco-art can amplify the impact of recycling efforts and activities, leading to heightened environmental awareness and conservation. By detailed examination of the intersections of these creative and ecological disciplines, the research aims to contribute insights into innovative approaches that simultaneously harmonize artistic expression and environmental conservation aspect, with the final important task of protecting our planet and ensuring sustainable development.",
publisher = "Conference of Academies for Applied Studies in Serbia (CAASS)",
journal = "International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024",
title = "Merging Eco-Art and Recycling to Advance Environmental Preservation",
pages = "416-412",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7741"
}

Mitrović, A., Mitrović, N., Kreculj, D.,& Reljić, M.. (2024). Merging Eco-Art and Recycling to Advance Environmental Preservation. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024
Conference of Academies for Applied Studies in Serbia (CAASS)., 412-416.
https://hdl.handle.net/21.15107/rcub_machinery_7741

Mitrović A, Mitrović N, Kreculj D, Reljić M. Merging Eco-Art and Recycling to Advance Environmental Preservation. in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024. 2024;:412-416.
https://hdl.handle.net/21.15107/rcub_machinery_7741 .

Mitrović, Aleksandra, Mitrović, Nenad, Kreculj, Dragan, Reljić, Mirjana, "Merging Eco-Art and Recycling to Advance Environmental Preservation" in International Multidisciplinary Conference – Challenges of Contemporary Higher Education CCHE 2024 (2024):412-416,
https://hdl.handle.net/21.15107/rcub_machinery_7741 .

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 . .