TY  - JOUR
AU  - Perković, Srđa
AU  - Radaković, Zoran
AU  - Burzić, Zijah
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Radović, Ljubica
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6885
AB  - The paper presents the effect of stress concentration on duplex steel S32750 (according to UNS standards or W.Nr. 1.4410 according to EN standards) behaviour under impact loading. This analysis is based on the results obtained by experimental testing, with particular focus on the influence of crack-like defects on material behaviour under impact load.
AB  - Predmet rada je analiza uticaja koncentracije napona na ponašanje dupleks čelika S32750 (prema UNS standardu ili W.Nr. 1.4410 prema EN standard) pri udarnom opterećenju. Na osnovu dobijenih rezultata ispitivanja, analiziran je uticaj prisustva greške tipa prsline na ponašanje materijala predviđenog za udarno opterećenje.
PB  - Society for Structural Integrity and Life - DIVK (Društvo za integritet i vek konstrukcija - DIVK)
PB  - Institute for Materials Testing - IMS (Institut za ispitivanje materijala - IMS)
T2  - Structural Integrity and Life (Integritet i vek konstrukcija)
T1  - Stress concentration effects on toughness value of duplex steel S32750
T1  - Uticaj koncentracije napona na vrednost žilavosti dupleks čelika S32750
EP  - 7
IS  - 1
SP  - 3
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6885
ER  - 

@article{
author = "Perković, Srđa and Radaković, Zoran and Burzić, Zijah and Sedmak, Simon and Sedmak, Aleksandar and Radović, Ljubica",
year = "2023",
abstract = "The paper presents the effect of stress concentration on duplex steel S32750 (according to UNS standards or W.Nr. 1.4410 according to EN standards) behaviour under impact loading. This analysis is based on the results obtained by experimental testing, with particular focus on the influence of crack-like defects on material behaviour under impact load., Predmet rada je analiza uticaja koncentracije napona na ponašanje dupleks čelika S32750 (prema UNS standardu ili W.Nr. 1.4410 prema EN standard) pri udarnom opterećenju. Na osnovu dobijenih rezultata ispitivanja, analiziran je uticaj prisustva greške tipa prsline na ponašanje materijala predviđenog za udarno opterećenje.",
publisher = "Society for Structural Integrity and Life - DIVK (Društvo za integritet i vek konstrukcija - DIVK), Institute for Materials Testing - IMS (Institut za ispitivanje materijala - IMS)",
journal = "Structural Integrity and Life (Integritet i vek konstrukcija)",
title = "Stress concentration effects on toughness value of duplex steel S32750, Uticaj koncentracije napona na vrednost žilavosti dupleks čelika S32750",
pages = "7-3",
number = "1",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6885"
}

Perković, S., Radaković, Z., Burzić, Z., Sedmak, S., Sedmak, A.,& Radović, L.. (2023). Stress concentration effects on toughness value of duplex steel S32750. in Structural Integrity and Life (Integritet i vek konstrukcija)
Society for Structural Integrity and Life - DIVK (Društvo za integritet i vek konstrukcija - DIVK)., 23(1), 3-7.
https://hdl.handle.net/21.15107/rcub_machinery_6885

Perković S, Radaković Z, Burzić Z, Sedmak S, Sedmak A, Radović L. Stress concentration effects on toughness value of duplex steel S32750. in Structural Integrity and Life (Integritet i vek konstrukcija). 2023;23(1):3-7.
https://hdl.handle.net/21.15107/rcub_machinery_6885 .

Perković, Srđa, Radaković, Zoran, Burzić, Zijah, Sedmak, Simon, Sedmak, Aleksandar, Radović, Ljubica, "Stress concentration effects on toughness value of duplex steel S32750" in Structural Integrity and Life (Integritet i vek konstrukcija), 23, no. 1 (2023):3-7,
https://hdl.handle.net/21.15107/rcub_machinery_6885 .

TY  - JOUR
AU  - Ristivojević, Mileta
AU  - Lučanin, Vojkan
AU  - Dimić, Aleksandar
AU  - Mišković, Žarko
AU  - Burzić, Zijah
AU  - Stamenić, Zoran
AU  - Rackov, Milan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3960
AB  - For heavy vehicle systems, within the power transmission chain from the driving machine to the working components (wheels), gears have a large share of application in the form of gearboxes, differentials and speed reducers. Their purpose is to achieve the highest possible output torque at the working components. In one heavy-duty truck, the gearbox lost its working capacity due to the failure of its vital parts: a tapered roller bearing and a helical gear. The analysis presented in this paper, conducted on the basis of experimental and analytical methods, showed that, due to inadequate installation of the bearings’ outer ring in the gearbox housing in one intermediate shaft support, the roller bearing performed its elementary function in very unfavorable working conditions of mechanical and thermal nature. Due to the damage accumulation, the roller bearing gradually lost its working capacity. As a result, the intensity of the working conditions of the entire gearbox increased. At the moment when they reached the critical value from the aspect of the gear teeth bending strength, volumetric destruction occurred, i.e fracture of the helical gear tooth, and thus the cessation of gearbox power transmission.
PB  - Elsevier
T2  - Engineering Failure Analysis
T1  - Investigation of the heavy duty truck gear drive failure
IS  - February
SP  - 106995
VL  - 144
DO  - 10.1016/j.engfailanal.2022.106995
ER  - 

@article{
author = "Ristivojević, Mileta and Lučanin, Vojkan and Dimić, Aleksandar and Mišković, Žarko and Burzić, Zijah and Stamenić, Zoran and Rackov, Milan",
year = "2023",
abstract = "For heavy vehicle systems, within the power transmission chain from the driving machine to the working components (wheels), gears have a large share of application in the form of gearboxes, differentials and speed reducers. Their purpose is to achieve the highest possible output torque at the working components. In one heavy-duty truck, the gearbox lost its working capacity due to the failure of its vital parts: a tapered roller bearing and a helical gear. The analysis presented in this paper, conducted on the basis of experimental and analytical methods, showed that, due to inadequate installation of the bearings’ outer ring in the gearbox housing in one intermediate shaft support, the roller bearing performed its elementary function in very unfavorable working conditions of mechanical and thermal nature. Due to the damage accumulation, the roller bearing gradually lost its working capacity. As a result, the intensity of the working conditions of the entire gearbox increased. At the moment when they reached the critical value from the aspect of the gear teeth bending strength, volumetric destruction occurred, i.e fracture of the helical gear tooth, and thus the cessation of gearbox power transmission.",
publisher = "Elsevier",
journal = "Engineering Failure Analysis",
title = "Investigation of the heavy duty truck gear drive failure",
number = "February",
pages = "106995",
volume = "144",
doi = "10.1016/j.engfailanal.2022.106995"
}

Ristivojević, M., Lučanin, V., Dimić, A., Mišković, Ž., Burzić, Z., Stamenić, Z.,& Rackov, M.. (2023). Investigation of the heavy duty truck gear drive failure. in Engineering Failure Analysis
Elsevier., 144(February), 106995.
https://doi.org/10.1016/j.engfailanal.2022.106995

Ristivojević M, Lučanin V, Dimić A, Mišković Ž, Burzić Z, Stamenić Z, Rackov M. Investigation of the heavy duty truck gear drive failure. in Engineering Failure Analysis. 2023;144(February):106995.
doi:10.1016/j.engfailanal.2022.106995 .

Ristivojević, Mileta, Lučanin, Vojkan, Dimić, Aleksandar, Mišković, Žarko, Burzić, Zijah, Stamenić, Zoran, Rackov, Milan, "Investigation of the heavy duty truck gear drive failure" in Engineering Failure Analysis, 144, no. February (2023):106995,
https://doi.org/10.1016/j.engfailanal.2022.106995 . .

TY  - JOUR
AU  - Burzić, Zijah
AU  - Perković, Srđa
AU  - Lisov, Miodrag
AU  - Grabulov, Vencislav
AU  - Burzić, Meri
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3704
AB  - U radu su prikazana eksperimentalna istraživanja koja uključuju analizu stvaranja i rasta prsline u zavarenom spoju čelika za rad na povišenim temperaturama. Za bolje razumevanje fenomena stvaranja i rasta prsline u zavarenim spojevima čelika A-204 Gr. A, namenjenog za rad na visokim temperaturama i pritiscima, potrebno je utvrditi uticaj heterogenosti mikrostrukturnih i mehaničkih svojstava na žilavost loma i stvaranje i rast zamorne prsline u komponentama zavarenog spoja. Na osnovu ispitivanja provedenih na CT i Charpy epruvetama na kojima su prethodno inicirane prsline utvrđen je uticaj heterogenosti mikrostrukturnih i mehaničkih svojstava zavarenog spojeva na žilavost loma i parametre rasta zamorne prsline.
AB  - In a paper given, experimental investigations have included the analysis of crack initiation and growth in welded joint of steel for operation at elevated temperatures. For better understanding of the phenomenon of crack initiation and propagation in welded joints of A-204 Gr. A steel, designed for high-temperature and high-pressure application, it is necessary to determine the effect of heterogeneity of microstructural and mechanical properties on fracture toughness and fatigue crack initiation and propagation in welded components. Based on the tests conducted with pre-cracked CT and Charpy size specimens, the effect of heterogeneity of microstructural and mechanical properties of welded joints on fracture toughness and fatigue-crack growth parameters was determined.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Inicijacija i rast prsline u zavarenom spoju čelika za rad na povišenim temperaturama
T1  - Crack initiation and growth in welded joint of steel for operation at elevated temperature
EP  - 61
IS  - 2
SP  - 53
VL  - 67
DO  - 10.5937/zzk2202053B
ER  - 

@article{
author = "Burzić, Zijah and Perković, Srđa and Lisov, Miodrag and Grabulov, Vencislav and Burzić, Meri",
year = "2022",
abstract = "U radu su prikazana eksperimentalna istraživanja koja uključuju analizu stvaranja i rasta prsline u zavarenom spoju čelika za rad na povišenim temperaturama. Za bolje razumevanje fenomena stvaranja i rasta prsline u zavarenim spojevima čelika A-204 Gr. A, namenjenog za rad na visokim temperaturama i pritiscima, potrebno je utvrditi uticaj heterogenosti mikrostrukturnih i mehaničkih svojstava na žilavost loma i stvaranje i rast zamorne prsline u komponentama zavarenog spoja. Na osnovu ispitivanja provedenih na CT i Charpy epruvetama na kojima su prethodno inicirane prsline utvrđen je uticaj heterogenosti mikrostrukturnih i mehaničkih svojstava zavarenog spojeva na žilavost loma i parametre rasta zamorne prsline., In a paper given, experimental investigations have included the analysis of crack initiation and growth in welded joint of steel for operation at elevated temperatures. For better understanding of the phenomenon of crack initiation and propagation in welded joints of A-204 Gr. A steel, designed for high-temperature and high-pressure application, it is necessary to determine the effect of heterogeneity of microstructural and mechanical properties on fracture toughness and fatigue crack initiation and propagation in welded components. Based on the tests conducted with pre-cracked CT and Charpy size specimens, the effect of heterogeneity of microstructural and mechanical properties of welded joints on fracture toughness and fatigue-crack growth parameters was determined.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Inicijacija i rast prsline u zavarenom spoju čelika za rad na povišenim temperaturama, Crack initiation and growth in welded joint of steel for operation at elevated temperature",
pages = "61-53",
number = "2",
volume = "67",
doi = "10.5937/zzk2202053B"
}

Burzić, Z., Perković, S., Lisov, M., Grabulov, V.,& Burzić, M.. (2022). Inicijacija i rast prsline u zavarenom spoju čelika za rad na povišenim temperaturama. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 67(2), 53-61.
https://doi.org/10.5937/zzk2202053B

Burzić Z, Perković S, Lisov M, Grabulov V, Burzić M. Inicijacija i rast prsline u zavarenom spoju čelika za rad na povišenim temperaturama. in Zavarivanje i zavarene konstrukcije. 2022;67(2):53-61.
doi:10.5937/zzk2202053B .

Burzić, Zijah, Perković, Srđa, Lisov, Miodrag, Grabulov, Vencislav, Burzić, Meri, "Inicijacija i rast prsline u zavarenom spoju čelika za rad na povišenim temperaturama" in Zavarivanje i zavarene konstrukcije, 67, no. 2 (2022):53-61,
https://doi.org/10.5937/zzk2202053B . .

TY  - JOUR
AU  - Smoljanić, Tamara
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
AU  - Milovanović, Aleksa
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7200
AB  - The paper involves experimental testing of titanium alloy Ti-6Al-4V specimens, based on which numerical models are made to provide the basis for further investigation. Due to the exploitation conditions these implants are subjected to, experimental tensile tests are performed on three types of specimens: regular type, and specimens previously subjected to the effects of humid and salty environment. The goal is to determine how these extreme conditions affect mechanical properties of Ti-6Al-4V alloy, along with the development of numerical models which could accurately simulate the behaviour of real specimens.
PB  - Society for Structural Integrity and Life
PB  - IMS Institute
T2  - STRUCTURAL INTEGRITY AND LIFE
T1  - Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions
EP  - 357
IS  - 3
SP  - 353
VL  - 22
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7200
ER  - 

@article{
author = "Smoljanić, Tamara and Sedmak, Simon and Sedmak, Aleksandar and Burzić, Zijah and Milovanović, Aleksa",
year = "2022",
abstract = "The paper involves experimental testing of titanium alloy Ti-6Al-4V specimens, based on which numerical models are made to provide the basis for further investigation. Due to the exploitation conditions these implants are subjected to, experimental tensile tests are performed on three types of specimens: regular type, and specimens previously subjected to the effects of humid and salty environment. The goal is to determine how these extreme conditions affect mechanical properties of Ti-6Al-4V alloy, along with the development of numerical models which could accurately simulate the behaviour of real specimens.",
publisher = "Society for Structural Integrity and Life, IMS Institute",
journal = "STRUCTURAL INTEGRITY AND LIFE",
title = "Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions",
pages = "357-353",
number = "3",
volume = "22",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7200"
}

Smoljanić, T., Sedmak, S., Sedmak, A., Burzić, Z.,& Milovanović, A.. (2022). Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions. in STRUCTURAL INTEGRITY AND LIFE
Society for Structural Integrity and Life., 22(3), 353-357.
https://hdl.handle.net/21.15107/rcub_machinery_7200

Smoljanić T, Sedmak S, Sedmak A, Burzić Z, Milovanović A. Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions. in STRUCTURAL INTEGRITY AND LIFE. 2022;22(3):353-357.
https://hdl.handle.net/21.15107/rcub_machinery_7200 .

Smoljanić, Tamara, Sedmak, Simon, Sedmak, Aleksandar, Burzić, Zijah, Milovanović, Aleksa, "Experimental and numerical investigation of Ti-6Al-4V alloy behaviour under different exploitation conditions" in STRUCTURAL INTEGRITY AND LIFE, 22, no. 3 (2022):353-357,
https://hdl.handle.net/21.15107/rcub_machinery_7200 .

TY  - JOUR
AU  - Burzić, Zijah
AU  - Sedmak, Aleksandar
AU  - Sedmak, Simon
AU  - Perković, Srđa
AU  - Aranđelović, Mihajlo
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7114
AB  - Results of extensive experiments involving the fatigue behaviour of welded structures which are a part of the “Gazela” bridge in Belgrade, Serbia, are presented in this paper. After non-destructive testing of these structures, crack-like defects were detected, and welded plates containing them were taken out for the purpose of destructive testing. This testing involved tensile tests, impact
testing using an instrumented Charpy pendulum and fatigue tests, from which the S-N curves were obtained. Based on these results, fracture mechanics parameters were determined, including crack tip opening, critical J-integral, stress intensity factors and critical crack length. In addition, fatigue tests, which involved four-point bending of standard Charpy specimens provided da/dN-ΔK
curves, which were then used in order to determine Paris Law coefficient, C and m. Obtained results are of great importance in order to better understand the behaviour of large-scale welded structures subjected to both static and dynamic (cyclic) loads, such as bridges
T2  - Procedia Structural Integrity
T1  - Analysis of fatigue behaviour of a bridge welded structure
EP  - 778
SP  - 771
VL  - 37
DO  - 10.1016/j.prostr.2022.02.008
ER  - 

@article{
author = "Burzić, Zijah and Sedmak, Aleksandar and Sedmak, Simon and Perković, Srđa and Aranđelović, Mihajlo",
year = "2022",
abstract = "Results of extensive experiments involving the fatigue behaviour of welded structures which are a part of the “Gazela” bridge in Belgrade, Serbia, are presented in this paper. After non-destructive testing of these structures, crack-like defects were detected, and welded plates containing them were taken out for the purpose of destructive testing. This testing involved tensile tests, impact
testing using an instrumented Charpy pendulum and fatigue tests, from which the S-N curves were obtained. Based on these results, fracture mechanics parameters were determined, including crack tip opening, critical J-integral, stress intensity factors and critical crack length. In addition, fatigue tests, which involved four-point bending of standard Charpy specimens provided da/dN-ΔK
curves, which were then used in order to determine Paris Law coefficient, C and m. Obtained results are of great importance in order to better understand the behaviour of large-scale welded structures subjected to both static and dynamic (cyclic) loads, such as bridges",
journal = "Procedia Structural Integrity",
title = "Analysis of fatigue behaviour of a bridge welded structure",
pages = "778-771",
volume = "37",
doi = "10.1016/j.prostr.2022.02.008"
}

Burzić, Z., Sedmak, A., Sedmak, S., Perković, S.,& Aranđelović, M.. (2022). Analysis of fatigue behaviour of a bridge welded structure. in Procedia Structural Integrity, 37, 771-778.
https://doi.org/10.1016/j.prostr.2022.02.008

Burzić Z, Sedmak A, Sedmak S, Perković S, Aranđelović M. Analysis of fatigue behaviour of a bridge welded structure. in Procedia Structural Integrity. 2022;37:771-778.
doi:10.1016/j.prostr.2022.02.008 .

Burzić, Zijah, Sedmak, Aleksandar, Sedmak, Simon, Perković, Srđa, Aranđelović, Mihajlo, "Analysis of fatigue behaviour of a bridge welded structure" in Procedia Structural Integrity, 37 (2022):771-778,
https://doi.org/10.1016/j.prostr.2022.02.008 . .

TY  - CHAP
AU  - Jovanović, M.
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
AU  - Čamagić, I.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3827
AB  - This paper involves the numerical analysis of fatigue behaviour of welded joints made of steel SA-387 Gr. 91, with special attention devoted to its regions, which have very different mechanical and fatigue properties. Extensive experimental research, which was performed in order to obtain the coefficients necessary for the analysis of fatigue life of structures and parts made of this steel, was used as the base for the finite element method simulation, performed in ANSYS R19.2. Due to the typical applications of steels from this group, all experiments were performed at elevated temperature of 575 °C, which corresponds to the exploitation conditions for this material. Obtained results have shown noticeable difference in fatigue crack growth resistance of different welded joint regions, as was expected from the experimental results.
PB  - Springer Science and Business Media Deutschland GmbH
T2  - Structural Integrity
T1  - Numerical Simulation of Fatigue Crack Growth in Different Welded Joint Zones
EP  - 8
SP  - 3
VL  - 24
DO  - 10.1007/978-3-030-97822-8_1
ER  - 

@inbook{
author = "Jovanović, M. and Sedmak, Simon and Sedmak, Aleksandar and Burzić, Zijah and Čamagić, I.",
year = "2022",
abstract = "This paper involves the numerical analysis of fatigue behaviour of welded joints made of steel SA-387 Gr. 91, with special attention devoted to its regions, which have very different mechanical and fatigue properties. Extensive experimental research, which was performed in order to obtain the coefficients necessary for the analysis of fatigue life of structures and parts made of this steel, was used as the base for the finite element method simulation, performed in ANSYS R19.2. Due to the typical applications of steels from this group, all experiments were performed at elevated temperature of 575 °C, which corresponds to the exploitation conditions for this material. Obtained results have shown noticeable difference in fatigue crack growth resistance of different welded joint regions, as was expected from the experimental results.",
publisher = "Springer Science and Business Media Deutschland GmbH",
journal = "Structural Integrity",
booktitle = "Numerical Simulation of Fatigue Crack Growth in Different Welded Joint Zones",
pages = "8-3",
volume = "24",
doi = "10.1007/978-3-030-97822-8_1"
}

Jovanović, M., Sedmak, S., Sedmak, A., Burzić, Z.,& Čamagić, I.. (2022). Numerical Simulation of Fatigue Crack Growth in Different Welded Joint Zones. in Structural Integrity
Springer Science and Business Media Deutschland GmbH., 24, 3-8.
https://doi.org/10.1007/978-3-030-97822-8_1

Jovanović M, Sedmak S, Sedmak A, Burzić Z, Čamagić I. Numerical Simulation of Fatigue Crack Growth in Different Welded Joint Zones. in Structural Integrity. 2022;24:3-8.
doi:10.1007/978-3-030-97822-8_1 .

Jovanović, M., Sedmak, Simon, Sedmak, Aleksandar, Burzić, Zijah, Čamagić, I., "Numerical Simulation of Fatigue Crack Growth in Different Welded Joint Zones" in Structural Integrity, 24 (2022):3-8,
https://doi.org/10.1007/978-3-030-97822-8_1 . .

TY  - JOUR
AU  - Jovanović, M.
AU  - Čamagić, I.
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3795
AB  - Successful application of Cr-Mo steel depends crucially on behaviour of all zones in welded joints, i.e. base metal (BM), heat-affected-zone (HAZ) and weld metal (WM), both at room and working temperature. Different amplitude loadings were applied for testing of specimens without a crack, made of welded joint as a whole and of BM, in order to obtain Woehler's curves and compare their dynamic strength. Amplitude loading was also applied for testing of specimens cracked in BM, HAZ and WM, in order to get fatigue crack growth curves and parameters C and m in Paris law. Results are analysed to get deeper insight into behaviour of welded joints, made of steel SA 387 Gr. 91, under amplitude loading both for room and working temperature.
PB  - Elsevier Ltd
T2  - Engineering Failure Analysis
T1  - Effect of material heterogeneity and testing temperature on fatigue behaviour of Cr-Mo steel welded joints
VL  - 141
DO  - 10.1016/j.engfailanal.2022.106542
ER  - 

@article{
author = "Jovanović, M. and Čamagić, I. and Sedmak, Simon and Sedmak, Aleksandar and Burzić, Zijah",
year = "2022",
abstract = "Successful application of Cr-Mo steel depends crucially on behaviour of all zones in welded joints, i.e. base metal (BM), heat-affected-zone (HAZ) and weld metal (WM), both at room and working temperature. Different amplitude loadings were applied for testing of specimens without a crack, made of welded joint as a whole and of BM, in order to obtain Woehler's curves and compare their dynamic strength. Amplitude loading was also applied for testing of specimens cracked in BM, HAZ and WM, in order to get fatigue crack growth curves and parameters C and m in Paris law. Results are analysed to get deeper insight into behaviour of welded joints, made of steel SA 387 Gr. 91, under amplitude loading both for room and working temperature.",
publisher = "Elsevier Ltd",
journal = "Engineering Failure Analysis",
title = "Effect of material heterogeneity and testing temperature on fatigue behaviour of Cr-Mo steel welded joints",
volume = "141",
doi = "10.1016/j.engfailanal.2022.106542"
}

Jovanović, M., Čamagić, I., Sedmak, S., Sedmak, A.,& Burzić, Z.. (2022). Effect of material heterogeneity and testing temperature on fatigue behaviour of Cr-Mo steel welded joints. in Engineering Failure Analysis
Elsevier Ltd., 141.
https://doi.org/10.1016/j.engfailanal.2022.106542

Jovanović M, Čamagić I, Sedmak S, Sedmak A, Burzić Z. Effect of material heterogeneity and testing temperature on fatigue behaviour of Cr-Mo steel welded joints. in Engineering Failure Analysis. 2022;141.
doi:10.1016/j.engfailanal.2022.106542 .

Jovanović, M., Čamagić, I., Sedmak, Simon, Sedmak, Aleksandar, Burzić, Zijah, "Effect of material heterogeneity and testing temperature on fatigue behaviour of Cr-Mo steel welded joints" in Engineering Failure Analysis, 141 (2022),
https://doi.org/10.1016/j.engfailanal.2022.106542 . .

TY  - JOUR
AU  - Jovanović, Milivoje
AU  - Camagić, Ivica
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3774
AB  - This paper presents the analysis of the behavior of welded joints made of 9-12% Cr-Mo steel SA-387 Gr. 91. The successful application of this steel depends not only on the base metal's (BM) properties but even more on heat-affected-zone (HAZ) and weld metal (WM), both at room and at operating temperature. Impact testing of specimens with a notch in BM, HAZ, and WM was performed on a Charpy instrumented pendulum to enable the separation of the total energy in crack-initiation and crack-propagation energy. Fracture toughness was also determined for all three zones, applying standard procedure at both temperatures. Results are analyzed to obtain a deep insight into steel SA 387 Gr. 91's crack resistance properties at room and operating temperatures. Results are also compared with results obtained previously for A-387 Gr. B to assess the effect of an increased content of Chromium.
PB  - MDPI, Basel
T2  - Materials
T1  - The Effect of Material Heterogeneity and Temperature on Impact Toughness and Fracture Resistance of SA-387 Gr. 91 Welded Joints
IS  - 5
VL  - 15
DO  - 10.3390/ma15051854
ER  - 

@article{
author = "Jovanović, Milivoje and Camagić, Ivica and Sedmak, Simon and Sedmak, Aleksandar and Burzić, Zijah",
year = "2022",
abstract = "This paper presents the analysis of the behavior of welded joints made of 9-12% Cr-Mo steel SA-387 Gr. 91. The successful application of this steel depends not only on the base metal's (BM) properties but even more on heat-affected-zone (HAZ) and weld metal (WM), both at room and at operating temperature. Impact testing of specimens with a notch in BM, HAZ, and WM was performed on a Charpy instrumented pendulum to enable the separation of the total energy in crack-initiation and crack-propagation energy. Fracture toughness was also determined for all three zones, applying standard procedure at both temperatures. Results are analyzed to obtain a deep insight into steel SA 387 Gr. 91's crack resistance properties at room and operating temperatures. Results are also compared with results obtained previously for A-387 Gr. B to assess the effect of an increased content of Chromium.",
publisher = "MDPI, Basel",
journal = "Materials",
title = "The Effect of Material Heterogeneity and Temperature on Impact Toughness and Fracture Resistance of SA-387 Gr. 91 Welded Joints",
number = "5",
volume = "15",
doi = "10.3390/ma15051854"
}

Jovanović, M., Camagić, I., Sedmak, S., Sedmak, A.,& Burzić, Z.. (2022). The Effect of Material Heterogeneity and Temperature on Impact Toughness and Fracture Resistance of SA-387 Gr. 91 Welded Joints. in Materials
MDPI, Basel., 15(5).
https://doi.org/10.3390/ma15051854

Jovanović M, Camagić I, Sedmak S, Sedmak A, Burzić Z. The Effect of Material Heterogeneity and Temperature on Impact Toughness and Fracture Resistance of SA-387 Gr. 91 Welded Joints. in Materials. 2022;15(5).
doi:10.3390/ma15051854 .

Jovanović, Milivoje, Camagić, Ivica, Sedmak, Simon, Sedmak, Aleksandar, Burzić, Zijah, "The Effect of Material Heterogeneity and Temperature on Impact Toughness and Fracture Resistance of SA-387 Gr. 91 Welded Joints" in Materials, 15, no. 5 (2022),
https://doi.org/10.3390/ma15051854 . .

TY  - CONF
AU  - Burzić, Zijah
AU  - Sedmak, Aleksandar
AU  - Sedmak, Simon
AU  - Perković, Srđa
AU  - Aranđelović, Mihajlo
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3779
AB  - Results of extensive experiments involving the fatigue behaviour of welded structures which are a part of the "Gazela" bridge in Belgrade, Serbia, are presented in this paper. After non-destructive testing of these structures, crack-like defects were detected, and welded plates containing them were taken out for the purpose of destructive testing. This testing involved tensile tests, impact testing using an instrumented Charpy pendulum and fatigue tests, from which the S-N curves were obtained. Based on these results, fracture mechanics parameters were determined, including crack tip opening, critical J-integral, stress intensity factors and critical crack length. In addition, fatigue tests, which involved four-point bending of standard Charpy specimens provided da/dN-Delta K curves, which were then used in order to determine Paris Law coefficient, C and m. Obtained results are of great importance in order to better understand the behaviour of large-scale welded structures subjected to both static and dynamic (cyclic) loads, such as bridges.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 4th International Conference on Structural Integrity (Icsi 2021)
T1  - Analysis of fatigue behaviour of a bridge welded structure
EP  - 273
SP  - 269
VL  - 37
DO  - 10.1016/j.prostr.2022.01.084
ER  - 

@conference{
author = "Burzić, Zijah and Sedmak, Aleksandar and Sedmak, Simon and Perković, Srđa and Aranđelović, Mihajlo",
year = "2022",
abstract = "Results of extensive experiments involving the fatigue behaviour of welded structures which are a part of the "Gazela" bridge in Belgrade, Serbia, are presented in this paper. After non-destructive testing of these structures, crack-like defects were detected, and welded plates containing them were taken out for the purpose of destructive testing. This testing involved tensile tests, impact testing using an instrumented Charpy pendulum and fatigue tests, from which the S-N curves were obtained. Based on these results, fracture mechanics parameters were determined, including crack tip opening, critical J-integral, stress intensity factors and critical crack length. In addition, fatigue tests, which involved four-point bending of standard Charpy specimens provided da/dN-Delta K curves, which were then used in order to determine Paris Law coefficient, C and m. Obtained results are of great importance in order to better understand the behaviour of large-scale welded structures subjected to both static and dynamic (cyclic) loads, such as bridges.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 4th International Conference on Structural Integrity (Icsi 2021)",
title = "Analysis of fatigue behaviour of a bridge welded structure",
pages = "273-269",
volume = "37",
doi = "10.1016/j.prostr.2022.01.084"
}

Burzić, Z., Sedmak, A., Sedmak, S., Perković, S.,& Aranđelović, M.. (2022). Analysis of fatigue behaviour of a bridge welded structure. in Procedia Structural Integrity - 4th International Conference on Structural Integrity (Icsi 2021)
Elsevier Science Bv, Amsterdam., 37, 269-273.
https://doi.org/10.1016/j.prostr.2022.01.084

Burzić Z, Sedmak A, Sedmak S, Perković S, Aranđelović M. Analysis of fatigue behaviour of a bridge welded structure. in Procedia Structural Integrity - 4th International Conference on Structural Integrity (Icsi 2021). 2022;37:269-273.
doi:10.1016/j.prostr.2022.01.084 .

Burzić, Zijah, Sedmak, Aleksandar, Sedmak, Simon, Perković, Srđa, Aranđelović, Mihajlo, "Analysis of fatigue behaviour of a bridge welded structure" in Procedia Structural Integrity - 4th International Conference on Structural Integrity (Icsi 2021), 37 (2022):269-273,
https://doi.org/10.1016/j.prostr.2022.01.084 . .

TY  - JOUR
AU  - Petrović, Zoran
AU  - Grbović, Aleksandar
AU  - Burzić, Zijah
AU  - Perković, Srđa
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3751
AB  - This paper presents the results of determining the fatigue crack growth parameters in aluminium alloy specimens 2024-T351 and 7075-T651, with different levels of previous corrosion, in the laboratory environment. Tests were performed, under the same load conditions, for each case of corrosion (without corrosion, 7 days of exposure in a corrosive environment and 30 days of exposure in a corrosive environment). All the tests were performed at room temperature. The analysis of the results includes changes in the basic parameters of fatigue crack growth, depending on the time of exposure to the action of controlled moisture. In addition, this paper gives a brief overview of modern design processes in the environment of computer mechanics and presents the results of the crack growth simulation, using the software package ANSYS.
PB  - Univ Osijek, Tech Fac, Slavonski Brod
T2  - Tehnički vjesnik
T1  - Influence of Corrosion on Parameters of Fracture Mechanics of Aluminium Alloys 2024-T351 and 7075-T651
EP  - 245
IS  - 1
SP  - 239
VL  - 29
DO  - 10.17559/TV-20210425222503
ER  - 

@article{
author = "Petrović, Zoran and Grbović, Aleksandar and Burzić, Zijah and Perković, Srđa",
year = "2022",
abstract = "This paper presents the results of determining the fatigue crack growth parameters in aluminium alloy specimens 2024-T351 and 7075-T651, with different levels of previous corrosion, in the laboratory environment. Tests were performed, under the same load conditions, for each case of corrosion (without corrosion, 7 days of exposure in a corrosive environment and 30 days of exposure in a corrosive environment). All the tests were performed at room temperature. The analysis of the results includes changes in the basic parameters of fatigue crack growth, depending on the time of exposure to the action of controlled moisture. In addition, this paper gives a brief overview of modern design processes in the environment of computer mechanics and presents the results of the crack growth simulation, using the software package ANSYS.",
publisher = "Univ Osijek, Tech Fac, Slavonski Brod",
journal = "Tehnički vjesnik",
title = "Influence of Corrosion on Parameters of Fracture Mechanics of Aluminium Alloys 2024-T351 and 7075-T651",
pages = "245-239",
number = "1",
volume = "29",
doi = "10.17559/TV-20210425222503"
}

Petrović, Z., Grbović, A., Burzić, Z.,& Perković, S.. (2022). Influence of Corrosion on Parameters of Fracture Mechanics of Aluminium Alloys 2024-T351 and 7075-T651. in Tehnički vjesnik
Univ Osijek, Tech Fac, Slavonski Brod., 29(1), 239-245.
https://doi.org/10.17559/TV-20210425222503

Petrović Z, Grbović A, Burzić Z, Perković S. Influence of Corrosion on Parameters of Fracture Mechanics of Aluminium Alloys 2024-T351 and 7075-T651. in Tehnički vjesnik. 2022;29(1):239-245.
doi:10.17559/TV-20210425222503 .

Petrović, Zoran, Grbović, Aleksandar, Burzić, Zijah, Perković, Srđa, "Influence of Corrosion on Parameters of Fracture Mechanics of Aluminium Alloys 2024-T351 and 7075-T651" in Tehnički vjesnik, 29, no. 1 (2022):239-245,
https://doi.org/10.17559/TV-20210425222503 . .

TY  - JOUR
AU  - Aranđelović, Mihajlo
AU  - Sedmak, Simon
AU  - Jovičić, Radomir
AU  - Perković, Srđa
AU  - Burzić, Zijah
AU  - Đorđević, Branislav R.
AU  - Radaković, Zoran
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3654
AB  - The paper presents continuation of extensive work on determining the behaviour of welded joints in the presence of multiple various types of defects, a problem that is not sufficiently covered by existing standards, such as EN ISO 5817 series. The research involves the development of numerical models, based on real geometries of welded joints made of typical structural steel S235JR, along with experimental tests that would verify the models, and provide additional insight into the behaviour of the welded structure under such unusual conditions. For this purpose, welding defects most likely to occur in practice are selected, and a number of their combinations is produced intentionally in welded plates. The goal of the numerical models is to determine the most critical locations in terms of stresses, and to analyse their integrity in the presence of cracks. While the experiments did validate the majority of numerically obtained results, there are certain unexpected differences. This provides the authors with additional goals of determining why these differences occur. For this purpose, additional destructive tests are performed, revealing the cause behind the disagreement between real and numerical results, while also confirming authors' suspicions.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Numerical simulation of welded joint with multiple various defects
EP  - 107
IS  - 1
SP  - 103
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3654
ER  - 

@article{
author = "Aranđelović, Mihajlo and Sedmak, Simon and Jovičić, Radomir and Perković, Srđa and Burzić, Zijah and Đorđević, Branislav R. and Radaković, Zoran",
year = "2021",
abstract = "The paper presents continuation of extensive work on determining the behaviour of welded joints in the presence of multiple various types of defects, a problem that is not sufficiently covered by existing standards, such as EN ISO 5817 series. The research involves the development of numerical models, based on real geometries of welded joints made of typical structural steel S235JR, along with experimental tests that would verify the models, and provide additional insight into the behaviour of the welded structure under such unusual conditions. For this purpose, welding defects most likely to occur in practice are selected, and a number of their combinations is produced intentionally in welded plates. The goal of the numerical models is to determine the most critical locations in terms of stresses, and to analyse their integrity in the presence of cracks. While the experiments did validate the majority of numerically obtained results, there are certain unexpected differences. This provides the authors with additional goals of determining why these differences occur. For this purpose, additional destructive tests are performed, revealing the cause behind the disagreement between real and numerical results, while also confirming authors' suspicions.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Numerical simulation of welded joint with multiple various defects",
pages = "107-103",
number = "1",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3654"
}

Aranđelović, M., Sedmak, S., Jovičić, R., Perković, S., Burzić, Z., Đorđević, B. R.,& Radaković, Z.. (2021). Numerical simulation of welded joint with multiple various defects. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 21(1), 103-107.
https://hdl.handle.net/21.15107/rcub_machinery_3654

Aranđelović M, Sedmak S, Jovičić R, Perković S, Burzić Z, Đorđević BR, Radaković Z. Numerical simulation of welded joint with multiple various defects. in Structural Integrity and Life. 2021;21(1):103-107.
https://hdl.handle.net/21.15107/rcub_machinery_3654 .

Aranđelović, Mihajlo, Sedmak, Simon, Jovičić, Radomir, Perković, Srđa, Burzić, Zijah, Đorđević, Branislav R., Radaković, Zoran, "Numerical simulation of welded joint with multiple various defects" in Structural Integrity and Life, 21, no. 1 (2021):103-107,
https://hdl.handle.net/21.15107/rcub_machinery_3654 .

TY  - JOUR
AU  - Aranđelović, Mihajlo
AU  - Sedmak, Simon
AU  - Jovičić, Radomir
AU  - Perković, Srđa
AU  - Burzić, Zijah
AU  - Radu, Dorin
AU  - Radaković, Zoran
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3530
AB  - Current standards related to welded joint defects (EN ISO 5817) only consider individual cases (i.e., single defect in a welded joint). The question remains about the behaviour of a welded joint in the simultaneous presence of several different types of defects, so-called multiple defects, which is the topic of this research. The main focus is on defects most commonly encountered in practice, such as linear misalignments, undercuts, incomplete root penetration, and excess weld metal. The welding procedure used in this case was metal active gas welding, a common technique when it comes to welding low-alloy low-carbon steels, including those used for pressure equipment. Different combinations of these defects were deliberately made in welded plates and tested in a standard way on a tensile machine, along with numerical simulations using the finite element method (FEM), based on real geometries. The goal was to predict the behaviour in terms of stress concentrations caused by geometry and affected by multiple defects and material heterogeneity. Numerical and experimental results were in good agreement, but only after some modifications of numerical models. The obtained stress values in the models ranged from noticeably lower than the yield stress of the used materials to slightly higher than it, suggesting that some defect combinations resulted in plastic strain, whereas other models remained in the elastic area. The stress-strain diagram obtained for the first group (misalignment, undercut, and excess root penetration) shows significantly less plasticity. Its yield stress is very close to its ultimate tensile strength, which in turn is noticeably lower compared with the other three groups. This suggests that welded joints with misalignment and incomplete root penetration are indeed the weakest of the four groups either due to the combination of the present defects or perhaps because of an additional unseen internal defect. From the other three diagrams, it can be concluded that the test specimens show very similar behaviour with nearly identical ultimate tensile strengths and considerable plasticity. The diagrams shows the most prominent yielding, with an easily distinguishable difference between the elastic and plastic regions. The diagrams are the most similar, having the same strain of around 9% and with a less obvious yield stress limit.
PB  - MDPI, Basel
T2  - Materials
T1  - Numerical and Experimental Investigations of Fracture Behaviour of Welded Joints with Multiple Defects
IS  - 17
VL  - 14
DO  - 10.3390/ma14174832
ER  - 

@article{
author = "Aranđelović, Mihajlo and Sedmak, Simon and Jovičić, Radomir and Perković, Srđa and Burzić, Zijah and Radu, Dorin and Radaković, Zoran",
year = "2021",
abstract = "Current standards related to welded joint defects (EN ISO 5817) only consider individual cases (i.e., single defect in a welded joint). The question remains about the behaviour of a welded joint in the simultaneous presence of several different types of defects, so-called multiple defects, which is the topic of this research. The main focus is on defects most commonly encountered in practice, such as linear misalignments, undercuts, incomplete root penetration, and excess weld metal. The welding procedure used in this case was metal active gas welding, a common technique when it comes to welding low-alloy low-carbon steels, including those used for pressure equipment. Different combinations of these defects were deliberately made in welded plates and tested in a standard way on a tensile machine, along with numerical simulations using the finite element method (FEM), based on real geometries. The goal was to predict the behaviour in terms of stress concentrations caused by geometry and affected by multiple defects and material heterogeneity. Numerical and experimental results were in good agreement, but only after some modifications of numerical models. The obtained stress values in the models ranged from noticeably lower than the yield stress of the used materials to slightly higher than it, suggesting that some defect combinations resulted in plastic strain, whereas other models remained in the elastic area. The stress-strain diagram obtained for the first group (misalignment, undercut, and excess root penetration) shows significantly less plasticity. Its yield stress is very close to its ultimate tensile strength, which in turn is noticeably lower compared with the other three groups. This suggests that welded joints with misalignment and incomplete root penetration are indeed the weakest of the four groups either due to the combination of the present defects or perhaps because of an additional unseen internal defect. From the other three diagrams, it can be concluded that the test specimens show very similar behaviour with nearly identical ultimate tensile strengths and considerable plasticity. The diagrams shows the most prominent yielding, with an easily distinguishable difference between the elastic and plastic regions. The diagrams are the most similar, having the same strain of around 9% and with a less obvious yield stress limit.",
publisher = "MDPI, Basel",
journal = "Materials",
title = "Numerical and Experimental Investigations of Fracture Behaviour of Welded Joints with Multiple Defects",
number = "17",
volume = "14",
doi = "10.3390/ma14174832"
}

Aranđelović, M., Sedmak, S., Jovičić, R., Perković, S., Burzić, Z., Radu, D.,& Radaković, Z.. (2021). Numerical and Experimental Investigations of Fracture Behaviour of Welded Joints with Multiple Defects. in Materials
MDPI, Basel., 14(17).
https://doi.org/10.3390/ma14174832

Aranđelović M, Sedmak S, Jovičić R, Perković S, Burzić Z, Radu D, Radaković Z. Numerical and Experimental Investigations of Fracture Behaviour of Welded Joints with Multiple Defects. in Materials. 2021;14(17).
doi:10.3390/ma14174832 .

Aranđelović, Mihajlo, Sedmak, Simon, Jovičić, Radomir, Perković, Srđa, Burzić, Zijah, Radu, Dorin, Radaković, Zoran, "Numerical and Experimental Investigations of Fracture Behaviour of Welded Joints with Multiple Defects" in Materials, 14, no. 17 (2021),
https://doi.org/10.3390/ma14174832 . .

TY  - CONF
AU  - Jovanović, Milivoje
AU  - Camagić, Ivica
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
AU  - Sedmak, Simon
AU  - Zivković, Predrag
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3565
AB  - This paper presents the results of experimental testing of crack resistance of specimens taken from a welded plate made of steel SA-387 Gr. 91, while taking into account different filler materials and welding procedures that were used. This type of steels is typically used in pressure vessels, pipelines and gas installations in the chemical and petrochemical industry, as well as in thermal installations. Since it is operating under extreme conditions, which include elevated temperatures and/or corrosion, the mechanical properties of SA-387 Gr. 91 will deteriorate over time, especially its welded joints. For this reason, it is very important to thoroughly analyse the behaviour of welded joints, taking into account the possibility of cracks initiating in any of the three welded joint regions, the parent material (PM), the weld metal (WM) and the heat affected zone (HAZ). This can be achieved by determining the total impact energy of Charpy specimens with V-2 notches in each of the three regions, along with their components, crack initiation and crack propagation energy, as well as by measuring the fracture toughness.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)
T1  - Analysis of SA 387 Gr. 91 welded joints crack resistance under static and impact load
EP  - 44
SP  - 38
VL  - 31
DO  - 10.1016/j.prostr.2021.03.008
ER  - 

@conference{
author = "Jovanović, Milivoje and Camagić, Ivica and Sedmak, Aleksandar and Burzić, Zijah and Sedmak, Simon and Zivković, Predrag",
year = "2021",
abstract = "This paper presents the results of experimental testing of crack resistance of specimens taken from a welded plate made of steel SA-387 Gr. 91, while taking into account different filler materials and welding procedures that were used. This type of steels is typically used in pressure vessels, pipelines and gas installations in the chemical and petrochemical industry, as well as in thermal installations. Since it is operating under extreme conditions, which include elevated temperatures and/or corrosion, the mechanical properties of SA-387 Gr. 91 will deteriorate over time, especially its welded joints. For this reason, it is very important to thoroughly analyse the behaviour of welded joints, taking into account the possibility of cracks initiating in any of the three welded joint regions, the parent material (PM), the weld metal (WM) and the heat affected zone (HAZ). This can be achieved by determining the total impact energy of Charpy specimens with V-2 notches in each of the three regions, along with their components, crack initiation and crack propagation energy, as well as by measuring the fracture toughness.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)",
title = "Analysis of SA 387 Gr. 91 welded joints crack resistance under static and impact load",
pages = "44-38",
volume = "31",
doi = "10.1016/j.prostr.2021.03.008"
}

Jovanović, M., Camagić, I., Sedmak, A., Burzić, Z., Sedmak, S.,& Zivković, P.. (2021). Analysis of SA 387 Gr. 91 welded joints crack resistance under static and impact load. in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020)
Elsevier Science Bv, Amsterdam., 31, 38-44.
https://doi.org/10.1016/j.prostr.2021.03.008

Jovanović M, Camagić I, Sedmak A, Burzić Z, Sedmak S, Zivković P. Analysis of SA 387 Gr. 91 welded joints crack resistance under static and impact load. in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020). 2021;31:38-44.
doi:10.1016/j.prostr.2021.03.008 .

Jovanović, Milivoje, Camagić, Ivica, Sedmak, Aleksandar, Burzić, Zijah, Sedmak, Simon, Zivković, Predrag, "Analysis of SA 387 Gr. 91 welded joints crack resistance under static and impact load" in Procedia Structural Integrity - 4th Int Conf Struct Integrity & Durability (ICSID 2020), 31 (2021):38-44,
https://doi.org/10.1016/j.prostr.2021.03.008 . .

TY  - JOUR
AU  - Petrović, Zoran
AU  - Burzić, Zijah
AU  - Perković, Srđa
AU  - Sedmak, Aleksandar
AU  - Tadić, Srđan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3587
AB  - Results of static tensile testing of aluminium alloys 2024T351 and 7075-T651 are presented with different levels of corrosion exposure in the laboratory environment. Specimens from two different rolling directions are tested (parallel and transverse rolling direction) after 7 and 30 days of corrosion exposure, respectively, using SCHENCK TREBEL Prufmaschinen 4030 Ratingen, type RM100 testing machine. The obtained results indicate the change in the tensile properties depending on the time of corrosion exposure and moisture content.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life-Integritet I Vek Konstrukcija
T1  - Corrosion effect on mechanical properties of aluminium alloys 2024-t351 and 7075-t651
EP  - 200
IS  - 2
SP  - 197
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3587
ER  - 

@article{
author = "Petrović, Zoran and Burzić, Zijah and Perković, Srđa and Sedmak, Aleksandar and Tadić, Srđan",
year = "2021",
abstract = "Results of static tensile testing of aluminium alloys 2024T351 and 7075-T651 are presented with different levels of corrosion exposure in the laboratory environment. Specimens from two different rolling directions are tested (parallel and transverse rolling direction) after 7 and 30 days of corrosion exposure, respectively, using SCHENCK TREBEL Prufmaschinen 4030 Ratingen, type RM100 testing machine. The obtained results indicate the change in the tensile properties depending on the time of corrosion exposure and moisture content.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life-Integritet I Vek Konstrukcija",
title = "Corrosion effect on mechanical properties of aluminium alloys 2024-t351 and 7075-t651",
pages = "200-197",
number = "2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3587"
}

Petrović, Z., Burzić, Z., Perković, S., Sedmak, A.,& Tadić, S.. (2021). Corrosion effect on mechanical properties of aluminium alloys 2024-t351 and 7075-t651. in Structural Integrity and Life-Integritet I Vek Konstrukcija
Institut za ispitivanje materijala, Beograd., 21(2), 197-200.
https://hdl.handle.net/21.15107/rcub_machinery_3587

Petrović Z, Burzić Z, Perković S, Sedmak A, Tadić S. Corrosion effect on mechanical properties of aluminium alloys 2024-t351 and 7075-t651. in Structural Integrity and Life-Integritet I Vek Konstrukcija. 2021;21(2):197-200.
https://hdl.handle.net/21.15107/rcub_machinery_3587 .

Petrović, Zoran, Burzić, Zijah, Perković, Srđa, Sedmak, Aleksandar, Tadić, Srđan, "Corrosion effect on mechanical properties of aluminium alloys 2024-t351 and 7075-t651" in Structural Integrity and Life-Integritet I Vek Konstrukcija, 21, no. 2 (2021):197-200,
https://hdl.handle.net/21.15107/rcub_machinery_3587 .

TY  - JOUR
AU  - Marjanović, Milica
AU  - Bajić, Danica
AU  - Perković, Srđa
AU  - Fidanovski, Bojana
AU  - Burzić, Zijah
AU  - Matija, Lidija
AU  - Bekrić, Dragoljub
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3514
AB  - A possibility was examined to enhance carbon-epoxy laminated composite mechanical properties by introducing a small concentration of reinforcing nanostructures - multi-wall onion-shaped fullerene-like nanoparticles of tungsten disulfide IF-WS2, and its multi-layer hollow nanotubes, INT-WS2, both known for their outstanding thermal, chemical, and mechanical resistance. Composite structures were prepared using a unidirectional prepreg of strong carbon fibers and epoxy resin, poly (vinyl butyral) solution in ethanol with ultrasonically dispersed WS2 nanostructures in it. Particle size analysis has been performed to evaluate the quality of IF-WS2 nanoparticles. SEM/EDS analysis was applied to observe the nanostructures, their dispersion in the composite, and the fracture zone after mechanical resistance tests of the prepared composite samples. Thorough mechanical tests were performed on a set of specimens with different fiber orientations: tensile test, bending test, and interlaminar shear test. The encouraging results were obtained, indicating that these newly designed light-weight composites are applicable for the automotive and nautical industry, unmanned aerial vehicles, and military aircrafts.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Fullerenes Nanotubes and Carbon Nanostructures
T1  - Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites
EP  - 1044
IS  - 12
SP  - 1034
VL  - 29
DO  - 10.1080/1536383X.2021.1928644
ER  - 

@article{
author = "Marjanović, Milica and Bajić, Danica and Perković, Srđa and Fidanovski, Bojana and Burzić, Zijah and Matija, Lidija and Bekrić, Dragoljub",
year = "2021",
abstract = "A possibility was examined to enhance carbon-epoxy laminated composite mechanical properties by introducing a small concentration of reinforcing nanostructures - multi-wall onion-shaped fullerene-like nanoparticles of tungsten disulfide IF-WS2, and its multi-layer hollow nanotubes, INT-WS2, both known for their outstanding thermal, chemical, and mechanical resistance. Composite structures were prepared using a unidirectional prepreg of strong carbon fibers and epoxy resin, poly (vinyl butyral) solution in ethanol with ultrasonically dispersed WS2 nanostructures in it. Particle size analysis has been performed to evaluate the quality of IF-WS2 nanoparticles. SEM/EDS analysis was applied to observe the nanostructures, their dispersion in the composite, and the fracture zone after mechanical resistance tests of the prepared composite samples. Thorough mechanical tests were performed on a set of specimens with different fiber orientations: tensile test, bending test, and interlaminar shear test. The encouraging results were obtained, indicating that these newly designed light-weight composites are applicable for the automotive and nautical industry, unmanned aerial vehicles, and military aircrafts.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Fullerenes Nanotubes and Carbon Nanostructures",
title = "Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites",
pages = "1044-1034",
number = "12",
volume = "29",
doi = "10.1080/1536383X.2021.1928644"
}

Marjanović, M., Bajić, D., Perković, S., Fidanovski, B., Burzić, Z., Matija, L.,& Bekrić, D.. (2021). Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites. in Fullerenes Nanotubes and Carbon Nanostructures
Taylor & Francis Inc, Philadelphia., 29(12), 1034-1044.
https://doi.org/10.1080/1536383X.2021.1928644

Marjanović M, Bajić D, Perković S, Fidanovski B, Burzić Z, Matija L, Bekrić D. Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites. in Fullerenes Nanotubes and Carbon Nanostructures. 2021;29(12):1034-1044.
doi:10.1080/1536383X.2021.1928644 .

Marjanović, Milica, Bajić, Danica, Perković, Srđa, Fidanovski, Bojana, Burzić, Zijah, Matija, Lidija, Bekrić, Dragoljub, "Inorganic fullerene-like nanoparticles and nanotubes of tungsten disulfide as reinforcement of carbon-epoxy composites" in Fullerenes Nanotubes and Carbon Nanostructures, 29, no. 12 (2021):1034-1044,
https://doi.org/10.1080/1536383X.2021.1928644 . .

TY  - JOUR
AU  - Petronić, Sanja
AU  - Čolić, Katarina
AU  - Jarić, Marko
AU  - Ćurčić, Nebojša
AU  - Burzić, Zijah
AU  - Sofijanić, Svetozar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3506
AB  - Kolone za rektifikaciju gasa veoma su važan deo svake fabrike. Njihovi iznenadni otkazi svakodnevno uzrokuju ogromne gubitke, dok curenje tečnosti može biti veoma opasno po ljude i životnu sredinu. Iz tog razloga, pravilan dizajn kolone je od velike važnosti, kao i primena ostalih faktora bezbednosti. U ovom radu prikazano je merenje debljine zida sa ciljem da se izračuna stopa korozije i preostali vek trajanja rektifikacionih kolona. Minimalna potrebna debljina zida kolone izračunata je prema najčešće korišćenim međunarodnim standardima i analizirana je dobijena razlika.
AB  - Gas rectification columns are a very important part of each onshore plant. Their sudden failures cause huge losses on a daily basis, while fluid leakage can be very dangerous to people and environment. For that reason, the proper design of the column is of huge importance, among the others safety factors as well. In this paper, the wall thickness measure is presented with the aim to calculate corrosion rate and remaining life of rectification columns. The minimum required column wall thickness was calculated according to the most commonly used international standard and the obtained difference was analyzed.
PB  - Vojnotehnički institut, Beograd
T2  - Scientific Technical Review
T1  - Faktori sigurnosti u proračunu debljine zida kolona za rektifikaciju
T1  - Safety factors in wall thickness calculation of rectification columns
EP  - 7
IS  - 1
SP  - 3
VL  - 71
DO  - 10.5937/str2101003P
ER  - 

@article{
author = "Petronić, Sanja and Čolić, Katarina and Jarić, Marko and Ćurčić, Nebojša and Burzić, Zijah and Sofijanić, Svetozar",
year = "2021",
abstract = "Kolone za rektifikaciju gasa veoma su važan deo svake fabrike. Njihovi iznenadni otkazi svakodnevno uzrokuju ogromne gubitke, dok curenje tečnosti može biti veoma opasno po ljude i životnu sredinu. Iz tog razloga, pravilan dizajn kolone je od velike važnosti, kao i primena ostalih faktora bezbednosti. U ovom radu prikazano je merenje debljine zida sa ciljem da se izračuna stopa korozije i preostali vek trajanja rektifikacionih kolona. Minimalna potrebna debljina zida kolone izračunata je prema najčešće korišćenim međunarodnim standardima i analizirana je dobijena razlika., Gas rectification columns are a very important part of each onshore plant. Their sudden failures cause huge losses on a daily basis, while fluid leakage can be very dangerous to people and environment. For that reason, the proper design of the column is of huge importance, among the others safety factors as well. In this paper, the wall thickness measure is presented with the aim to calculate corrosion rate and remaining life of rectification columns. The minimum required column wall thickness was calculated according to the most commonly used international standard and the obtained difference was analyzed.",
publisher = "Vojnotehnički institut, Beograd",
journal = "Scientific Technical Review",
title = "Faktori sigurnosti u proračunu debljine zida kolona za rektifikaciju, Safety factors in wall thickness calculation of rectification columns",
pages = "7-3",
number = "1",
volume = "71",
doi = "10.5937/str2101003P"
}

Petronić, S., Čolić, K., Jarić, M., Ćurčić, N., Burzić, Z.,& Sofijanić, S.. (2021). Faktori sigurnosti u proračunu debljine zida kolona za rektifikaciju. in Scientific Technical Review
Vojnotehnički institut, Beograd., 71(1), 3-7.
https://doi.org/10.5937/str2101003P

Petronić S, Čolić K, Jarić M, Ćurčić N, Burzić Z, Sofijanić S. Faktori sigurnosti u proračunu debljine zida kolona za rektifikaciju. in Scientific Technical Review. 2021;71(1):3-7.
doi:10.5937/str2101003P .

Petronić, Sanja, Čolić, Katarina, Jarić, Marko, Ćurčić, Nebojša, Burzić, Zijah, Sofijanić, Svetozar, "Faktori sigurnosti u proračunu debljine zida kolona za rektifikaciju" in Scientific Technical Review, 71, no. 1 (2021):3-7,
https://doi.org/10.5937/str2101003P . .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Radović, Ljubica
AU  - Burzić, Zijah
AU  - Arsić, Dušan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3435
AB  - Surface welding of rail steel with self-shielded wire was conducted with different heat inputs, and the influence of welding heat input on the total impact energy and its components, crack growth rate and fracture mechanism was systematically investigated. It is shown that toughness decreases as heat input increases, but, with a temperature decrease, these differences are not so marked. An increase of heat input leads to increasing the share of transgranular brittle fracture, what is in complete accordance with the obtained energy values. It is established that fatigue life increases when increasing the welding heat input, while resistance to crack growth decreases in the final deposit layer up to the HAZ at all heat inputs. Based on obtained results, the optimal value of heat input is defined for the selected welding procedure.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - The effect of heat input on the fracture behaviour of surface weld metal of rail steel
EP  - 81
IS  - 1
SP  - 77
VL  - 20
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3435
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Radović, Ljubica and Burzić, Zijah and Arsić, Dušan",
year = "2020",
abstract = "Surface welding of rail steel with self-shielded wire was conducted with different heat inputs, and the influence of welding heat input on the total impact energy and its components, crack growth rate and fracture mechanism was systematically investigated. It is shown that toughness decreases as heat input increases, but, with a temperature decrease, these differences are not so marked. An increase of heat input leads to increasing the share of transgranular brittle fracture, what is in complete accordance with the obtained energy values. It is established that fatigue life increases when increasing the welding heat input, while resistance to crack growth decreases in the final deposit layer up to the HAZ at all heat inputs. Based on obtained results, the optimal value of heat input is defined for the selected welding procedure.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "The effect of heat input on the fracture behaviour of surface weld metal of rail steel",
pages = "81-77",
number = "1",
volume = "20",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3435"
}

Popović, O., Prokić-Cvetković, R., Radović, L., Burzić, Z.,& Arsić, D.. (2020). The effect of heat input on the fracture behaviour of surface weld metal of rail steel. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 20(1), 77-81.
https://hdl.handle.net/21.15107/rcub_machinery_3435

Popović O, Prokić-Cvetković R, Radović L, Burzić Z, Arsić D. The effect of heat input on the fracture behaviour of surface weld metal of rail steel. in Structural Integrity and Life. 2020;20(1):77-81.
https://hdl.handle.net/21.15107/rcub_machinery_3435 .

Popović, Olivera, Prokić-Cvetković, Radica, Radović, Ljubica, Burzić, Zijah, Arsić, Dušan, "The effect of heat input on the fracture behaviour of surface weld metal of rail steel" in Structural Integrity and Life, 20, no. 1 (2020):77-81,
https://hdl.handle.net/21.15107/rcub_machinery_3435 .

TY  - CONF
AU  - Camagić, Ivica
AU  - Kirin, Snežana
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3014
AB  - Risk based analysis of temperature and time effects on fracture toughness values is applied to different regions of a welded joint made of low-alloyed Cr-Mo steel A-387 Gr. B, designed for high temperature applications. Heterogeneity of microstructure and properties of welded joint is evaluated by testing standard 3BP specimens with crack tip located at different regions of a joint, including the base metal (BM), weld metal (WM) and heat-affected-zone (HAZ). Experiments were performed both at the room temperature and at design working temperature, 540 rectangle C. Based on these results, fracture toughness values are determined and used for risk based analysis, including risk matrix presentation as the basis for decision making process.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
T1  - Risk based analysis of temperature and time effects on brittle fracture of A-387 Gr. B welded joint
EP  - 384
SP  - 379
VL  - 18
DO  - 10.1016/j.prostr.2019.08.178
ER  - 

@conference{
author = "Camagić, Ivica and Kirin, Snežana and Sedmak, Aleksandar and Burzić, Zijah",
year = "2019",
abstract = "Risk based analysis of temperature and time effects on fracture toughness values is applied to different regions of a welded joint made of low-alloyed Cr-Mo steel A-387 Gr. B, designed for high temperature applications. Heterogeneity of microstructure and properties of welded joint is evaluated by testing standard 3BP specimens with crack tip located at different regions of a joint, including the base metal (BM), weld metal (WM) and heat-affected-zone (HAZ). Experiments were performed both at the room temperature and at design working temperature, 540 rectangle C. Based on these results, fracture toughness values are determined and used for risk based analysis, including risk matrix presentation as the basis for decision making process.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity",
title = "Risk based analysis of temperature and time effects on brittle fracture of A-387 Gr. B welded joint",
pages = "384-379",
volume = "18",
doi = "10.1016/j.prostr.2019.08.178"
}

Camagić, I., Kirin, S., Sedmak, A.,& Burzić, Z.. (2019). Risk based analysis of temperature and time effects on brittle fracture of A-387 Gr. B welded joint. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
Elsevier Science Bv, Amsterdam., 18, 379-384.
https://doi.org/10.1016/j.prostr.2019.08.178

Camagić I, Kirin S, Sedmak A, Burzić Z. Risk based analysis of temperature and time effects on brittle fracture of A-387 Gr. B welded joint. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity. 2019;18:379-384.
doi:10.1016/j.prostr.2019.08.178 .

Camagić, Ivica, Kirin, Snežana, Sedmak, Aleksandar, Burzić, Zijah, "Risk based analysis of temperature and time effects on brittle fracture of A-387 Gr. B welded joint" in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity, 18 (2019):379-384,
https://doi.org/10.1016/j.prostr.2019.08.178 . .

TY  - CONF
AU  - Camagić, Ivica
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3013
AB  - The influence of temperature on fracture toughness values in different regions of a welded joint is analysed low-alloyed Cr-Mo steel A-387 Gr. B, designed for high temperature applications. Heterogeneity of microstructure and properties of welded joint is evaluated by testing standard 3BP specimens with crack tip located at different regions of a joint, including the base metal (BM), weld metal (WM) and heat-affected-zone (HAZ). Experiments were performed both at the room temperature and at design working temperature, 5400C. Based on these results, temperature effect on crack resistance is established for all different regions in a welded joint. 2019 The Authors. Published by Elsevier B.V.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
T1  - Influence of temperature on fracture toughness values in different regions of A-387 Gr. B welded joint
EP  - 213
SP  - 205
VL  - 18
DO  - 10.1016/j.prostr.2019.08.155
ER  - 

@conference{
author = "Camagić, Ivica and Sedmak, Simon and Sedmak, Aleksandar and Burzić, Zijah",
year = "2019",
abstract = "The influence of temperature on fracture toughness values in different regions of a welded joint is analysed low-alloyed Cr-Mo steel A-387 Gr. B, designed for high temperature applications. Heterogeneity of microstructure and properties of welded joint is evaluated by testing standard 3BP specimens with crack tip located at different regions of a joint, including the base metal (BM), weld metal (WM) and heat-affected-zone (HAZ). Experiments were performed both at the room temperature and at design working temperature, 5400C. Based on these results, temperature effect on crack resistance is established for all different regions in a welded joint. 2019 The Authors. Published by Elsevier B.V.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity",
title = "Influence of temperature on fracture toughness values in different regions of A-387 Gr. B welded joint",
pages = "213-205",
volume = "18",
doi = "10.1016/j.prostr.2019.08.155"
}

Camagić, I., Sedmak, S., Sedmak, A.,& Burzić, Z.. (2019). Influence of temperature on fracture toughness values in different regions of A-387 Gr. B welded joint. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
Elsevier Science Bv, Amsterdam., 18, 205-213.
https://doi.org/10.1016/j.prostr.2019.08.155

Camagić I, Sedmak S, Sedmak A, Burzić Z. Influence of temperature on fracture toughness values in different regions of A-387 Gr. B welded joint. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity. 2019;18:205-213.
doi:10.1016/j.prostr.2019.08.155 .

Camagić, Ivica, Sedmak, Simon, Sedmak, Aleksandar, Burzić, Zijah, "Influence of temperature on fracture toughness values in different regions of A-387 Gr. B welded joint" in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity, 18 (2019):205-213,
https://doi.org/10.1016/j.prostr.2019.08.155 . .

TY  - CONF
AU  - Camagić, Ivica
AU  - Sedmak, Aleksandar
AU  - Sedmak, Simon
AU  - Burzić, Zijah
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3006
AB  - The influence of temperature on impact and fracture toughness values in different regions of a welded joint is analysed for low-alloyed Cr-Mo steel A-387 Gr. B, designed for high temperature applications. Standard Charpy specimens were tested on instrumented pendulum to separate total impact energy into energy for initiation and propagation energy for base metal (BM), weld metal (WM) and heat-affected-zone (HAZ). Standard three point bending (3BP) specimens with crack tip located at different regions of a joint (BM, WM, HAZ), were used for fracture toughness testing. Experiments were performed both at the room temperature and at design working temperature, 540 degrees C, which is the focus of this paper, to evaluate temperature effect on both notch and crack resistance for all different regions in a welded joint. Moreover, the relation between crack initiation energy and fracture toughness is established, purely on empirical base.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
T1  - Relation between impact and fracture toughness of A-387 Gr. B welded joint
EP  - 907
SP  - 903
VL  - 18
DO  - 10.1016/j.prostr.2019.08.241
ER  - 

@conference{
author = "Camagić, Ivica and Sedmak, Aleksandar and Sedmak, Simon and Burzić, Zijah",
year = "2019",
abstract = "The influence of temperature on impact and fracture toughness values in different regions of a welded joint is analysed for low-alloyed Cr-Mo steel A-387 Gr. B, designed for high temperature applications. Standard Charpy specimens were tested on instrumented pendulum to separate total impact energy into energy for initiation and propagation energy for base metal (BM), weld metal (WM) and heat-affected-zone (HAZ). Standard three point bending (3BP) specimens with crack tip located at different regions of a joint (BM, WM, HAZ), were used for fracture toughness testing. Experiments were performed both at the room temperature and at design working temperature, 540 degrees C, which is the focus of this paper, to evaluate temperature effect on both notch and crack resistance for all different regions in a welded joint. Moreover, the relation between crack initiation energy and fracture toughness is established, purely on empirical base.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity",
title = "Relation between impact and fracture toughness of A-387 Gr. B welded joint",
pages = "907-903",
volume = "18",
doi = "10.1016/j.prostr.2019.08.241"
}

Camagić, I., Sedmak, A., Sedmak, S.,& Burzić, Z.. (2019). Relation between impact and fracture toughness of A-387 Gr. B welded joint. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
Elsevier Science Bv, Amsterdam., 18, 903-907.
https://doi.org/10.1016/j.prostr.2019.08.241

Camagić I, Sedmak A, Sedmak S, Burzić Z. Relation between impact and fracture toughness of A-387 Gr. B welded joint. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity. 2019;18:903-907.
doi:10.1016/j.prostr.2019.08.241 .

Camagić, Ivica, Sedmak, Aleksandar, Sedmak, Simon, Burzić, Zijah, "Relation between impact and fracture toughness of A-387 Gr. B welded joint" in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity, 18 (2019):903-907,
https://doi.org/10.1016/j.prostr.2019.08.241 . .

TY  - CONF
AU  - Camagić, Ivica
AU  - Burzić, Zijah
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Lazarević, Dragan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3022
AB  - Integrity and life assessment of structural elements or structures subjected to variable loads is necessary in order to define the control interval and removal of damages that occurred during exploitation. Integrity and life assessment of a reactor was carried out with the previously performed welding technology qualification for new and exploited parent material sheets, made of Cr-Mo steel A-387 Gr. B, with a thickness 102 mm. Exploited parent material is the part of a reactor mantle which was in exploitation for over 40 years and is in the repair stage, i.e. its mantle is being replaced with the new material. Obtained test results and their analysis should provide a practical contribution to the assessment of exploitation conditions effects on the behaviour of parent material, welded joint components and the pressure vessel (reactor) used for exploitation at elevated temperatures, all for the purpose of integrity and life assessment of the structure, along with the revitalisation and work life extension of process equipment (reactor), made of steel used for exploitation at elevated temperatures.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
T1  - Integrity and Life Assessment Procedure for a Reactor
EP  - 390
SP  - 385
VL  - 18
DO  - 10.1016/j.prostr.2019.08.179
ER  - 

@conference{
author = "Camagić, Ivica and Burzić, Zijah and Sedmak, Simon and Sedmak, Aleksandar and Lazarević, Dragan",
year = "2019",
abstract = "Integrity and life assessment of structural elements or structures subjected to variable loads is necessary in order to define the control interval and removal of damages that occurred during exploitation. Integrity and life assessment of a reactor was carried out with the previously performed welding technology qualification for new and exploited parent material sheets, made of Cr-Mo steel A-387 Gr. B, with a thickness 102 mm. Exploited parent material is the part of a reactor mantle which was in exploitation for over 40 years and is in the repair stage, i.e. its mantle is being replaced with the new material. Obtained test results and their analysis should provide a practical contribution to the assessment of exploitation conditions effects on the behaviour of parent material, welded joint components and the pressure vessel (reactor) used for exploitation at elevated temperatures, all for the purpose of integrity and life assessment of the structure, along with the revitalisation and work life extension of process equipment (reactor), made of steel used for exploitation at elevated temperatures.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity",
title = "Integrity and Life Assessment Procedure for a Reactor",
pages = "390-385",
volume = "18",
doi = "10.1016/j.prostr.2019.08.179"
}

Camagić, I., Burzić, Z., Sedmak, S., Sedmak, A.,& Lazarević, D.. (2019). Integrity and Life Assessment Procedure for a Reactor. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
Elsevier Science Bv, Amsterdam., 18, 385-390.
https://doi.org/10.1016/j.prostr.2019.08.179

Camagić I, Burzić Z, Sedmak S, Sedmak A, Lazarević D. Integrity and Life Assessment Procedure for a Reactor. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity. 2019;18:385-390.
doi:10.1016/j.prostr.2019.08.179 .

Camagić, Ivica, Burzić, Zijah, Sedmak, Simon, Sedmak, Aleksandar, Lazarević, Dragan, "Integrity and Life Assessment Procedure for a Reactor" in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity, 18 (2019):385-390,
https://doi.org/10.1016/j.prostr.2019.08.179 . .

TY  - CONF
AU  - Džindo, Emina
AU  - Sedmak, Simon
AU  - Camagić, Ivica
AU  - Burzić, Zijah
AU  - Perković, Srđa
AU  - Cvetković, Ivana
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3071
AB  - This paper is focused on the experimental measuring of impact energy as a part of the doctoral dissertation involving the fatigue behaviour of welded joints, made of fine grain normalised micro-alloyed low carbon high strength steel P460NL1 [1,2], typically used for pressure vessels working at subzero temperatures. VAC 65 [3] was used as filler material, and two plates were welded using the MAG welding procedure (with 82% Ar + 18% CO2 shielding gas). The specimens were taken from two opposite ends of the welded plate, taking into account the measured values of groove edge temperature in these locations, wherein the temperatures in Location 2 (near the end of the weld) were higher than those in Location 1 (near the weld's beginning). Based on their specific position, in terms of temperature and notch position (weld root or face), the specimens were divided into four groups of three. This testing was performed using a SCHENCK-TREBEL instrumented Charpy pendulum. The total impact energy was determined, along with its components, crack initiation and crack propagation energy. The obtained results have confirmed that the test specimens were of high toughness, with total impact energy ranging from 165200 J, at room temperature. The crack propagation energy was the dominant component, being several times greater than the crack initiation energy, as was expected.
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
T1  - Experimental determining of fracture behaviour of P460NL1 steel welded joint specimens
EP  - 236
SP  - 231
VL  - 18
DO  - 10.1016/j.prostr.2019.08.158
ER  - 

@conference{
author = "Džindo, Emina and Sedmak, Simon and Camagić, Ivica and Burzić, Zijah and Perković, Srđa and Cvetković, Ivana",
year = "2019",
abstract = "This paper is focused on the experimental measuring of impact energy as a part of the doctoral dissertation involving the fatigue behaviour of welded joints, made of fine grain normalised micro-alloyed low carbon high strength steel P460NL1 [1,2], typically used for pressure vessels working at subzero temperatures. VAC 65 [3] was used as filler material, and two plates were welded using the MAG welding procedure (with 82% Ar + 18% CO2 shielding gas). The specimens were taken from two opposite ends of the welded plate, taking into account the measured values of groove edge temperature in these locations, wherein the temperatures in Location 2 (near the end of the weld) were higher than those in Location 1 (near the weld's beginning). Based on their specific position, in terms of temperature and notch position (weld root or face), the specimens were divided into four groups of three. This testing was performed using a SCHENCK-TREBEL instrumented Charpy pendulum. The total impact energy was determined, along with its components, crack initiation and crack propagation energy. The obtained results have confirmed that the test specimens were of high toughness, with total impact energy ranging from 165200 J, at room temperature. The crack propagation energy was the dominant component, being several times greater than the crack initiation energy, as was expected.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity",
title = "Experimental determining of fracture behaviour of P460NL1 steel welded joint specimens",
pages = "236-231",
volume = "18",
doi = "10.1016/j.prostr.2019.08.158"
}

Džindo, E., Sedmak, S., Camagić, I., Burzić, Z., Perković, S.,& Cvetković, I.. (2019). Experimental determining of fracture behaviour of P460NL1 steel welded joint specimens. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity
Elsevier Science Bv, Amsterdam., 18, 231-236.
https://doi.org/10.1016/j.prostr.2019.08.158

Džindo E, Sedmak S, Camagić I, Burzić Z, Perković S, Cvetković I. Experimental determining of fracture behaviour of P460NL1 steel welded joint specimens. in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity. 2019;18:231-236.
doi:10.1016/j.prostr.2019.08.158 .

Džindo, Emina, Sedmak, Simon, Camagić, Ivica, Burzić, Zijah, Perković, Srđa, Cvetković, Ivana, "Experimental determining of fracture behaviour of P460NL1 steel welded joint specimens" in Procedia Structural Integrity - 25th International Conference on Fracture and Structural Integrity, 18 (2019):231-236,
https://doi.org/10.1016/j.prostr.2019.08.158 . .

TY  - JOUR
AU  - Mijatović, Tamara
AU  - Manjgo, Mersida
AU  - Burzić, Meri
AU  - Čolić, Katarina
AU  - Burzić, Zijah
AU  - Vuherer, Tomaž
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3209
AB  - An increasing diversity of operations and different materials, as well as different working conditions lead to various construction solutions. Structural design is the preparation of structures that shall be efficient in fulfilling anticipated exploitation conditions, both economically and safely, i.e. there will be no damage resulting in the loss of structural functionality in service. In practice, however, there are fractures that can occur during construction, assembly, and exploitation. Fracture may be caused by overloads, by static fracture, or by dynamic loads, and by fatigue. Upon calculation of static structural durability, normal and tangential stresses are taken into account, while the dynamic durability calculation defines structural resistance to crack formation and its propagation under dynamic loading. The aim of this paper is to demonstrate the possibility of applying fracture mechanics to structural integrity assessment. To this end, the basic concepts of linear elastic fracture mechanics will be explained.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Structural integrity assessment from the aspect of fracture mechanics
EP  - 124
IS  - 2
SP  - 121
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3209
ER  - 

@article{
author = "Mijatović, Tamara and Manjgo, Mersida and Burzić, Meri and Čolić, Katarina and Burzić, Zijah and Vuherer, Tomaž",
year = "2019",
abstract = "An increasing diversity of operations and different materials, as well as different working conditions lead to various construction solutions. Structural design is the preparation of structures that shall be efficient in fulfilling anticipated exploitation conditions, both economically and safely, i.e. there will be no damage resulting in the loss of structural functionality in service. In practice, however, there are fractures that can occur during construction, assembly, and exploitation. Fracture may be caused by overloads, by static fracture, or by dynamic loads, and by fatigue. Upon calculation of static structural durability, normal and tangential stresses are taken into account, while the dynamic durability calculation defines structural resistance to crack formation and its propagation under dynamic loading. The aim of this paper is to demonstrate the possibility of applying fracture mechanics to structural integrity assessment. To this end, the basic concepts of linear elastic fracture mechanics will be explained.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Structural integrity assessment from the aspect of fracture mechanics",
pages = "124-121",
number = "2",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3209"
}

Mijatović, T., Manjgo, M., Burzić, M., Čolić, K., Burzić, Z.,& Vuherer, T.. (2019). Structural integrity assessment from the aspect of fracture mechanics. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 19(2), 121-124.
https://hdl.handle.net/21.15107/rcub_machinery_3209

Mijatović T, Manjgo M, Burzić M, Čolić K, Burzić Z, Vuherer T. Structural integrity assessment from the aspect of fracture mechanics. in Structural Integrity and Life. 2019;19(2):121-124.
https://hdl.handle.net/21.15107/rcub_machinery_3209 .

Mijatović, Tamara, Manjgo, Mersida, Burzić, Meri, Čolić, Katarina, Burzić, Zijah, Vuherer, Tomaž, "Structural integrity assessment from the aspect of fracture mechanics" in Structural Integrity and Life, 19, no. 2 (2019):121-124,
https://hdl.handle.net/21.15107/rcub_machinery_3209 .

TY  - JOUR
AU  - Sedmak, Simon
AU  - Burzić, Zijah
AU  - Perković, S.
AU  - Jovičić, Radomir
AU  - Aranđelović, Mihajlo
AU  - Radović, Lj.
AU  - Ilić, N.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3072
AB  - In this paper, the results of determining the Paris law coefficients, C and m, are presented, based on the experimental data obtained by three-point bending testing of 8 welded joint specimens. The specimens were taken from a welded plate, with P460NL1 used as the parent material and VAC 65 used as filler material. The specimens had a 1.4 mm notch in the heat affected zone, either in the root or the weld face side. After the fatigue crack growth tests performed using the Fractomat 7609/213 (RUMUL), the obtained crack growth rate vs. number of cycles (da/dN vs. N) diagrams were used to calculate the coefficients. The values of these coefficients were then compared to each other, in order to determine the cause of noticeable differences, which were assumed to be a result of different microstructures in different specimens, caused by the increased temperature measured in the specimens near the end of the welded joint. Since the specimens used in the experiment had differences in terms of notch position and temperature, they were divided into four groups. Analysis of the results involved the comparison of obtained a-N curves with the images of microstructures, as seen on the broken specimens, in order to determine whether the changes in the curve's slope correspond to the changes in microstructures along the specimens' cross-sections. The experimental results confirmed this assumption, and it was determined that the crack growth rate was the highest in the weld metal, whereas the lowest rates (highest resistance to fatigue crack growth) were observed in the parent material, with the heat affected zone being between these two value ranges.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Influence of welded joint microstructures on fatigue behaviour of specimens with a notch in the heat affected zone
VL  - 106
DO  - 10.1016/j.engfailanal.2019.104162
ER  - 

@article{
author = "Sedmak, Simon and Burzić, Zijah and Perković, S. and Jovičić, Radomir and Aranđelović, Mihajlo and Radović, Lj. and Ilić, N.",
year = "2019",
abstract = "In this paper, the results of determining the Paris law coefficients, C and m, are presented, based on the experimental data obtained by three-point bending testing of 8 welded joint specimens. The specimens were taken from a welded plate, with P460NL1 used as the parent material and VAC 65 used as filler material. The specimens had a 1.4 mm notch in the heat affected zone, either in the root or the weld face side. After the fatigue crack growth tests performed using the Fractomat 7609/213 (RUMUL), the obtained crack growth rate vs. number of cycles (da/dN vs. N) diagrams were used to calculate the coefficients. The values of these coefficients were then compared to each other, in order to determine the cause of noticeable differences, which were assumed to be a result of different microstructures in different specimens, caused by the increased temperature measured in the specimens near the end of the welded joint. Since the specimens used in the experiment had differences in terms of notch position and temperature, they were divided into four groups. Analysis of the results involved the comparison of obtained a-N curves with the images of microstructures, as seen on the broken specimens, in order to determine whether the changes in the curve's slope correspond to the changes in microstructures along the specimens' cross-sections. The experimental results confirmed this assumption, and it was determined that the crack growth rate was the highest in the weld metal, whereas the lowest rates (highest resistance to fatigue crack growth) were observed in the parent material, with the heat affected zone being between these two value ranges.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Influence of welded joint microstructures on fatigue behaviour of specimens with a notch in the heat affected zone",
volume = "106",
doi = "10.1016/j.engfailanal.2019.104162"
}

Sedmak, S., Burzić, Z., Perković, S., Jovičić, R., Aranđelović, M., Radović, Lj.,& Ilić, N.. (2019). Influence of welded joint microstructures on fatigue behaviour of specimens with a notch in the heat affected zone. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 106.
https://doi.org/10.1016/j.engfailanal.2019.104162

Sedmak S, Burzić Z, Perković S, Jovičić R, Aranđelović M, Radović L, Ilić N. Influence of welded joint microstructures on fatigue behaviour of specimens with a notch in the heat affected zone. in Engineering Failure Analysis. 2019;106.
doi:10.1016/j.engfailanal.2019.104162 .

Sedmak, Simon, Burzić, Zijah, Perković, S., Jovičić, Radomir, Aranđelović, Mihajlo, Radović, Lj., Ilić, N., "Influence of welded joint microstructures on fatigue behaviour of specimens with a notch in the heat affected zone" in Engineering Failure Analysis, 106 (2019),
https://doi.org/10.1016/j.engfailanal.2019.104162 . .

TY  - JOUR
AU  - Cabrilo, Aleksandar
AU  - Sedmak, Aleksandar
AU  - Burzić, Zijah
AU  - Perković, Srđa
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3076
AB  - The welding process of armor steel is a complex process due to possible welding faults appearing in all zones of weld metal joint in the form of cracks and pores, as results of high percentage of carbon in the base metal. Military armored vehicles, are exposed to dynamic and impact loads. Hence, it is important to know the fracture toughness and fatigue crack propagation in all zones of the weld joint. Fatigue crack propagation testing was made on SEN (B) specimens. Fatigue threshold for weld metal is the lowest Delta Kth = 10.1 MPa*m1/2, and for base metal is the highest Delta Kth = 13.4 MPa*m1/2, while the notch values in HAZ is Delta Kth = 12.6 MPa*m1/2. Due to a significant interest in quantification of material resistance to crack initiation and propagation, the fatigue crack growth rate was measured in the base metal, HAZ and welded metal zone. Accordingly, the most important attention should be paid to the zone of the base metal, while the weld metal and HAZ are safe zones.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Fracture mechanics and fatigue crack propagation in armor steel welds
VL  - 106
DO  - 10.1016/j.engfailanal.2019.104155
ER  - 

@article{
author = "Cabrilo, Aleksandar and Sedmak, Aleksandar and Burzić, Zijah and Perković, Srđa",
year = "2019",
abstract = "The welding process of armor steel is a complex process due to possible welding faults appearing in all zones of weld metal joint in the form of cracks and pores, as results of high percentage of carbon in the base metal. Military armored vehicles, are exposed to dynamic and impact loads. Hence, it is important to know the fracture toughness and fatigue crack propagation in all zones of the weld joint. Fatigue crack propagation testing was made on SEN (B) specimens. Fatigue threshold for weld metal is the lowest Delta Kth = 10.1 MPa*m1/2, and for base metal is the highest Delta Kth = 13.4 MPa*m1/2, while the notch values in HAZ is Delta Kth = 12.6 MPa*m1/2. Due to a significant interest in quantification of material resistance to crack initiation and propagation, the fatigue crack growth rate was measured in the base metal, HAZ and welded metal zone. Accordingly, the most important attention should be paid to the zone of the base metal, while the weld metal and HAZ are safe zones.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Fracture mechanics and fatigue crack propagation in armor steel welds",
volume = "106",
doi = "10.1016/j.engfailanal.2019.104155"
}

Cabrilo, A., Sedmak, A., Burzić, Z.,& Perković, S.. (2019). Fracture mechanics and fatigue crack propagation in armor steel welds. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 106.
https://doi.org/10.1016/j.engfailanal.2019.104155

Cabrilo A, Sedmak A, Burzić Z, Perković S. Fracture mechanics and fatigue crack propagation in armor steel welds. in Engineering Failure Analysis. 2019;106.
doi:10.1016/j.engfailanal.2019.104155 .

Cabrilo, Aleksandar, Sedmak, Aleksandar, Burzić, Zijah, Perković, Srđa, "Fracture mechanics and fatigue crack propagation in armor steel welds" in Engineering Failure Analysis, 106 (2019),
https://doi.org/10.1016/j.engfailanal.2019.104155 . .