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

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

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

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

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

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

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

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

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

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

TY  - JOUR
AU  - Vučetić, Filip
AU  - Đorđević, Branislav
AU  - Aranđelović, Mihajlo
AU  - Sedmak, Simon
AU  - Milošević, Nenad
AU  - Radu, Dorin
AU  - Jeremić, Lazar
PY  - 2023
UR  - http://divk.inovacionicentar.rs/ivk/ivk23/OF2301-15.html
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7104
AB  - The research covers the investigation of mechanical properties of welded joint made on NiCr21Mo alloy (commercial trademark Incoloy 825), and joints of steels P355GH and X2CrNiMo17-12-2, as well as the influence of the achieved mechanical properties on structural integrity. Ongoing research is oriented on welded joints made of NiCr21Mo, i.e., the alloy to be introduced for certain parts (made of the aforementioned materials P355GH and X2CrNiMo17-12-2) of processing equipment exposed to elevated temperatures and high corrosive environment. Three preliminary welding technologies are presented in the first part of the paper. Tungsten inert gas (TIG) welding technique is used due to the type of filler material. The filler material features mechanical properties that provide an overmatching effect. After non-destructive tests (NDT), mechanical properties of all three welded joints are examined according to criteria that guarantee safe work and welded component integrity. In addition to mechanical tests (uniaxial tension, bending, impact toughness, hardness measurements), a microstructural analysis is performed to verify the applied preliminary welding technologies and evaluate the integrity of the obtained joints. After analysing all tests it is confirmed that the application of the preliminary welding technology has met all the requirements according to the applied criteria.
PB  - Društvo za integritet i vek konstrukcija „Prof. dr Stojan Sedmak“, Institut za ispitivanje materijala (IMS), Beograd
T2  - Structural Integrity and Life
T1  - Integrity of Welded Joints Made of Alloy NiCr21Mo
EP  - 97
IS  - 1
SP  - 91
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7104
ER  - 

@article{
author = "Vučetić, Filip and Đorđević, Branislav and Aranđelović, Mihajlo and Sedmak, Simon and Milošević, Nenad and Radu, Dorin and Jeremić, Lazar",
year = "2023",
abstract = "The research covers the investigation of mechanical properties of welded joint made on NiCr21Mo alloy (commercial trademark Incoloy 825), and joints of steels P355GH and X2CrNiMo17-12-2, as well as the influence of the achieved mechanical properties on structural integrity. Ongoing research is oriented on welded joints made of NiCr21Mo, i.e., the alloy to be introduced for certain parts (made of the aforementioned materials P355GH and X2CrNiMo17-12-2) of processing equipment exposed to elevated temperatures and high corrosive environment. Three preliminary welding technologies are presented in the first part of the paper. Tungsten inert gas (TIG) welding technique is used due to the type of filler material. The filler material features mechanical properties that provide an overmatching effect. After non-destructive tests (NDT), mechanical properties of all three welded joints are examined according to criteria that guarantee safe work and welded component integrity. In addition to mechanical tests (uniaxial tension, bending, impact toughness, hardness measurements), a microstructural analysis is performed to verify the applied preliminary welding technologies and evaluate the integrity of the obtained joints. After analysing all tests it is confirmed that the application of the preliminary welding technology has met all the requirements according to the applied criteria.",
publisher = "Društvo za integritet i vek konstrukcija „Prof. dr Stojan Sedmak“, Institut za ispitivanje materijala (IMS), Beograd",
journal = "Structural Integrity and Life",
title = "Integrity of Welded Joints Made of Alloy NiCr21Mo",
pages = "97-91",
number = "1",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7104"
}

Vučetić, F., Đorđević, B., Aranđelović, M., Sedmak, S., Milošević, N., Radu, D.,& Jeremić, L.. (2023). Integrity of Welded Joints Made of Alloy NiCr21Mo. in Structural Integrity and Life
Društvo za integritet i vek konstrukcija „Prof. dr Stojan Sedmak“, Institut za ispitivanje materijala (IMS), Beograd., 23(1), 91-97.
https://hdl.handle.net/21.15107/rcub_machinery_7104

Vučetić F, Đorđević B, Aranđelović M, Sedmak S, Milošević N, Radu D, Jeremić L. Integrity of Welded Joints Made of Alloy NiCr21Mo. in Structural Integrity and Life. 2023;23(1):91-97.
https://hdl.handle.net/21.15107/rcub_machinery_7104 .

Vučetić, Filip, Đorđević, Branislav, Aranđelović, Mihajlo, Sedmak, Simon, Milošević, Nenad, Radu, Dorin, Jeremić, Lazar, "Integrity of Welded Joints Made of Alloy NiCr21Mo" in Structural Integrity and Life, 23, no. 1 (2023):91-97,
https://hdl.handle.net/21.15107/rcub_machinery_7104 .

TY  - JOUR
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Maksimović, Vesna
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7333
AB  - The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding param¬eters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the micro¬structural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its charac¬terization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy.
T2  - Structural Integrity and Life
T1  - Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating
EP  - 128
IS  - 2
SP  - 123
VL  - 23
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7333
ER  - 

@article{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Maksimović, Vesna",
year = "2023",
abstract = "The paper describes the surfacing technology for coating of high-alloyed austenitic stainless steel 316L on the steel S235JR base material. Coatings were applied by plasma transferred arc welding process. The 5 samples were made using different welding currents while other welding param¬eters were constant. Metallographic analysis of the obtained samples is used to establish a correlation between the micro¬structural constituents and the applied welding current in the surfacing process. According to this it was possible to determine the optimal parameters of coating surfacing. The filler material was in the form of powder, while its charac¬terization was performed by scanning electron microscopy, and the characterization of the obtained coatings by optical microscopy.",
journal = "Structural Integrity and Life",
title = "Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating",
pages = "128-123",
number = "2",
volume = "23",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7333"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N.,& Maksimović, V.. (2023). Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating. in Structural Integrity and Life, 23(2), 123-128.
https://hdl.handle.net/21.15107/rcub_machinery_7333

Maslarević A, Bakić G, Rajičić B, Milošević N, Maksimović V. Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating. in Structural Integrity and Life. 2023;23(2):123-128.
https://hdl.handle.net/21.15107/rcub_machinery_7333 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Maksimović, Vesna, "Influence of plasma transferred arc welding parameters on the obtained microstructure of 316L coating" in Structural Integrity and Life, 23, no. 2 (2023):123-128,
https://hdl.handle.net/21.15107/rcub_machinery_7333 .

TY  - CONF
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6895
AB  - Compound Ti2AlC is a MAX phase discovered in the early 1960s.  It is well known that Ti2AlC has excellent physical and mechanical properties and chemical stability [1]. On the surface of Ti2AlC, at high temperatures, a stable, protective oxide layer, Al2O3, is usually formed [2], whose coefficient of thermal expansion is approximately equal to the coefficient of thermal expansion of Ti2AlC [3]. If this Al2O3 layer is compact, it stops further oxygen penetration and protects Ti2AlC from further oxidation. Due to its excellent oxidation resistance, MAX phase Ti2AlC has great potential in producing protective coatings for components in the industry that are exposed to high temperatures [4,5]. Coating Ti2AlC can be applied to the substrate by different thermal spraying processes. Cold spraying (CS), high velocity air fuel (HVAF), and high velocity oxygen fuel (HVOF) processes can be singled out as particularly interesting due to the possibility of applying thicker coatings to the substrate [6].
This paper describes the technology of applying the Ti2AlC phase on heat-resistant steel using the HVOF system of the third generation, which uses a mixture of oxygen and kerosene as fuel. Also, the filler material, which was in the form of powder, and the microstructure of the obtained coating were characterized by scanning electron microscopy (SEM). The Ti2AlC coating was successfully applied and a relatively good mechanical bond was achieved with the substrate. The goal of surfacing the Ti2AlC coating was a potential application for protecting steel from oxidation at elevated temperatures.

[1] F. Zhang et al., Surf.Coat. Tech., 441(2022) 128584.
[2] X.H. Wang, Y.C. Zhou, Oxid. Met., 59(2003) 303.
[3] W.H. Gitzen (Ed.), Westerville, Ohio, (1970) ISBN 0-916094-46-4.
[4]Q.M. Wanget et al, Surf.Coat.Tech., 204(2010) 2343.
[5] X.H. Wang and Y.C. Zhou, J. Mater. Sci. Technol., 26(2010) 385.
[6] N. Markocsan et al., Сверхтвердые материалы, 5(2017) 73.
PB  - Beograd : Institut za multidisciplinarna istrazivanja
C3  - 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia
T1  - Thermal Spraying of Ti2AlC coatings
EP  - 89
SP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6895
ER  - 

@conference{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Maksimović, Vesna and Pavkov, Vladimir",
year = "2023",
abstract = "Compound Ti2AlC is a MAX phase discovered in the early 1960s.  It is well known that Ti2AlC has excellent physical and mechanical properties and chemical stability [1]. On the surface of Ti2AlC, at high temperatures, a stable, protective oxide layer, Al2O3, is usually formed [2], whose coefficient of thermal expansion is approximately equal to the coefficient of thermal expansion of Ti2AlC [3]. If this Al2O3 layer is compact, it stops further oxygen penetration and protects Ti2AlC from further oxidation. Due to its excellent oxidation resistance, MAX phase Ti2AlC has great potential in producing protective coatings for components in the industry that are exposed to high temperatures [4,5]. Coating Ti2AlC can be applied to the substrate by different thermal spraying processes. Cold spraying (CS), high velocity air fuel (HVAF), and high velocity oxygen fuel (HVOF) processes can be singled out as particularly interesting due to the possibility of applying thicker coatings to the substrate [6].
This paper describes the technology of applying the Ti2AlC phase on heat-resistant steel using the HVOF system of the third generation, which uses a mixture of oxygen and kerosene as fuel. Also, the filler material, which was in the form of powder, and the microstructure of the obtained coating were characterized by scanning electron microscopy (SEM). The Ti2AlC coating was successfully applied and a relatively good mechanical bond was achieved with the substrate. The goal of surfacing the Ti2AlC coating was a potential application for protecting steel from oxidation at elevated temperatures.

[1] F. Zhang et al., Surf.Coat. Tech., 441(2022) 128584.
[2] X.H. Wang, Y.C. Zhou, Oxid. Met., 59(2003) 303.
[3] W.H. Gitzen (Ed.), Westerville, Ohio, (1970) ISBN 0-916094-46-4.
[4]Q.M. Wanget et al, Surf.Coat.Tech., 204(2010) 2343.
[5] X.H. Wang and Y.C. Zhou, J. Mater. Sci. Technol., 26(2010) 385.
[6] N. Markocsan et al., Сверхтвердые материалы, 5(2017) 73.",
publisher = "Beograd : Institut za multidisciplinarna istrazivanja",
journal = "7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia",
title = "Thermal Spraying of Ti2AlC coatings",
pages = "89-89",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6895"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N., Maksimović, V.,& Pavkov, V.. (2023). Thermal Spraying of Ti2AlC coatings. in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia
Beograd : Institut za multidisciplinarna istrazivanja., 89-89.
https://hdl.handle.net/21.15107/rcub_machinery_6895

Maslarević A, Bakić G, Rajičić B, Milošević N, Maksimović V, Pavkov V. Thermal Spraying of Ti2AlC coatings. in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia. 2023;:89-89.
https://hdl.handle.net/21.15107/rcub_machinery_6895 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Maksimović, Vesna, Pavkov, Vladimir, "Thermal Spraying of Ti2AlC coatings" in 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, Programme and the Book of Abstracts, June 14-16, 2023 Belgrade, Serbia (2023):89-89,
https://hdl.handle.net/21.15107/rcub_machinery_6895 .

TY  - PAT
AU  - Maslarević, Aleksandar
AU  - Bakić, Gordana
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
AU  - Martić, Igor
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4280
T1  - Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4280
ER  - 

@misc{
author = "Maslarević, Aleksandar and Bakić, Gordana and Rajičić, Bratislav and Milošević, Nenad and Martić, Igor",
year = "2022",
title = "Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4280"
}

Maslarević, A., Bakić, G., Rajičić, B., Milošević, N.,& Martić, I.. (2022). Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha. .
https://hdl.handle.net/21.15107/rcub_machinery_4280

Maslarević A, Bakić G, Rajičić B, Milošević N, Martić I. Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4280 .

Maslarević, Aleksandar, Bakić, Gordana, Rajičić, Bratislav, Milošević, Nenad, Martić, Igor, "Alat za osiguranje položaja diskova pri određivanju srednje brzine čestica erodenta nošenih strujom vazduha" (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4280 .

TY  - CONF
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Maslarević, Aleksandar
AU  - Maksimović, Vesna
AU  - Pavkov, Vladimir
AU  - Milošević, Nenad
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4429
C3  - Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022
T1  - High temperature failures of metals
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4429
ER  - 

@conference{
author = "Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Maslarević, Aleksandar and Maksimović, Vesna and Pavkov, Vladimir and Milošević, Nenad",
year = "2022",
journal = "Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022",
title = "High temperature failures of metals",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4429"
}

Bakić, G., Đukić, M., Rajičić, B., Maslarević, A., Maksimović, V., Pavkov, V.,& Milošević, N.. (2022). High temperature failures of metals. in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022.
https://hdl.handle.net/21.15107/rcub_machinery_4429

Bakić G, Đukić M, Rajičić B, Maslarević A, Maksimović V, Pavkov V, Milošević N. High temperature failures of metals. in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4429 .

Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Maslarević, Aleksandar, Maksimović, Vesna, Pavkov, Vladimir, Milošević, Nenad, "High temperature failures of metals" in Program and Book of abstracts of the 1st Intentational conference on innovativ materials in extreme conditions IMEC2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4429 .

TY  - JOUR
AU  - Tanasković, Drakče
AU  - Đorđević, Branislav
AU  - Aranđelović, Mihajlo
AU  - Milošević, Nenad
AU  - Vučetić, Filip
AU  - Sedmak, Simon
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4275
AB  - During preparing activities, as well as welding proces itself, it is necessary to strictly adhere to all relavant standards, programs and prescribed procedures. Experience can have a significant role for realization of repair welding, but it can also have the opposite effect. This fact (or ignorance) has led to the need for subsequent repair of cracks on the treiber roll. The previous claim is based on the fact that the treiber roll is made of S235J0 steel, whose characteristics (such as weldability) are not unknown, and inadequately measures that where taken led to the cold cracks occurance, which directly and indirectly caused huge losses. The reasons for cold cracks occurance were also explained in the paper itself. Steps for cold cracks repairing on the upper treiber roll of steel-mill sheet metal plant are also presented. Steps for repair welding with all parameters are described in order to eliminate defects caused by previous welding technology.
T2  - Welding and Material Testing
T1  - Successful repair of cold cracks on treiber roll: case study
IS  - 2
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4275
ER  - 

@article{
author = "Tanasković, Drakče and Đorđević, Branislav and Aranđelović, Mihajlo and Milošević, Nenad and Vučetić, Filip and Sedmak, Simon",
year = "2022",
abstract = "During preparing activities, as well as welding proces itself, it is necessary to strictly adhere to all relavant standards, programs and prescribed procedures. Experience can have a significant role for realization of repair welding, but it can also have the opposite effect. This fact (or ignorance) has led to the need for subsequent repair of cracks on the treiber roll. The previous claim is based on the fact that the treiber roll is made of S235J0 steel, whose characteristics (such as weldability) are not unknown, and inadequately measures that where taken led to the cold cracks occurance, which directly and indirectly caused huge losses. The reasons for cold cracks occurance were also explained in the paper itself. Steps for cold cracks repairing on the upper treiber roll of steel-mill sheet metal plant are also presented. Steps for repair welding with all parameters are described in order to eliminate defects caused by previous welding technology.",
journal = "Welding and Material Testing",
title = "Successful repair of cold cracks on treiber roll: case study",
number = "2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4275"
}

Tanasković, D., Đorđević, B., Aranđelović, M., Milošević, N., Vučetić, F.,& Sedmak, S.. (2022). Successful repair of cold cracks on treiber roll: case study. in Welding and Material Testing(2).
https://hdl.handle.net/21.15107/rcub_machinery_4275

Tanasković D, Đorđević B, Aranđelović M, Milošević N, Vučetić F, Sedmak S. Successful repair of cold cracks on treiber roll: case study. in Welding and Material Testing. 2022;(2).
https://hdl.handle.net/21.15107/rcub_machinery_4275 .

Tanasković, Drakče, Đorđević, Branislav, Aranđelović, Mihajlo, Milošević, Nenad, Vučetić, Filip, Sedmak, Simon, "Successful repair of cold cracks on treiber roll: case study" in Welding and Material Testing, no. 2 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4275 .

TY  - CONF
AU  - Opačić, Mirjana
AU  - Sedmak, Aleksandar
AU  - Bakić, Gordana
AU  - Milošević, Nenad
AU  - Milovanović, Nikola
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4276
AB  - The review of non-destructive testing of pressure vessel for compressed air is given, as well as the assessment and analysis of defects on the integrity of the vessel itself. The focus here is on welded joints, as the most critical areas in pressure vessels, especially if thickness is large, like in the case considered here (50 mm), cylindrical air storage vessels made of HSLA steel. Toward this end conventional NDT methods, such as UT and Radiography are used in the first phase of this research, providing valuable data for structural integrity assessment based on detected unacceptable defects in welded joints. Anyhow, since few unacceptable defects were found by conventional UT, there was a need to use advanced NDT UT methods, such as Phased Array Ultrasonic Testing (PAUT), to evaluate defect position and size more precisely. In this way risk of failure can be assessed more reliable, which is of utmost importance for pressure vessel where probability of failure is low, but the consequence of failure is potentially catastrophic, like in the case considered here.
PB  - Elsevier
C3  - 23 European Conference on Fracture - ECF23
T1  - Application of advanced NDT methods to assess structural integrity of pressure vessel welded joints
EP  - 1189
SP  - 1185
VL  - 42
DO  - http://dx.doi.org/10.1016/j.prostr.2022.12.151
ER  - 

@conference{
author = "Opačić, Mirjana and Sedmak, Aleksandar and Bakić, Gordana and Milošević, Nenad and Milovanović, Nikola",
year = "2022",
abstract = "The review of non-destructive testing of pressure vessel for compressed air is given, as well as the assessment and analysis of defects on the integrity of the vessel itself. The focus here is on welded joints, as the most critical areas in pressure vessels, especially if thickness is large, like in the case considered here (50 mm), cylindrical air storage vessels made of HSLA steel. Toward this end conventional NDT methods, such as UT and Radiography are used in the first phase of this research, providing valuable data for structural integrity assessment based on detected unacceptable defects in welded joints. Anyhow, since few unacceptable defects were found by conventional UT, there was a need to use advanced NDT UT methods, such as Phased Array Ultrasonic Testing (PAUT), to evaluate defect position and size more precisely. In this way risk of failure can be assessed more reliable, which is of utmost importance for pressure vessel where probability of failure is low, but the consequence of failure is potentially catastrophic, like in the case considered here.",
publisher = "Elsevier",
journal = "23 European Conference on Fracture - ECF23",
title = "Application of advanced NDT methods to assess structural integrity of pressure vessel welded joints",
pages = "1189-1185",
volume = "42",
doi = "http://dx.doi.org/10.1016/j.prostr.2022.12.151"
}

Opačić, M., Sedmak, A., Bakić, G., Milošević, N.,& Milovanović, N.. (2022). Application of advanced NDT methods to assess structural integrity of pressure vessel welded joints. in 23 European Conference on Fracture - ECF23
Elsevier., 42, 1185-1189.
https://doi.org/http://dx.doi.org/10.1016/j.prostr.2022.12.151

Opačić M, Sedmak A, Bakić G, Milošević N, Milovanović N. Application of advanced NDT methods to assess structural integrity of pressure vessel welded joints. in 23 European Conference on Fracture - ECF23. 2022;42:1185-1189.
doi:http://dx.doi.org/10.1016/j.prostr.2022.12.151 .

Opačić, Mirjana, Sedmak, Aleksandar, Bakić, Gordana, Milošević, Nenad, Milovanović, Nikola, "Application of advanced NDT methods to assess structural integrity of pressure vessel welded joints" in 23 European Conference on Fracture - ECF23, 42 (2022):1185-1189,
https://doi.org/http://dx.doi.org/10.1016/j.prostr.2022.12.151 . .

TY  - JOUR
AU  - Vučetić, Trivun
AU  - Petrovski, Blagoj
AU  - Marković, Zlatan
AU  - Jeremić, Lazar
AU  - Sedmak, Aleksandar
AU  - Milošević, Nenad
AU  - Milovanović, Nikola
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4279
AB  - Prikazana je popravka posude 970, jer je rizik bio veoma visok, blizu najgoreg slučaja verovatnoće i posledica. Kako položaj greške nije bio pogodan za iskopavanje i reparaturno zavarivanje, odlučeno je da se napravi ukrutni prsten,kako bi se smanjio napon u zavarenom spoju, tako da se i faktor intenziteta napona i neto napon značajno smanjuju.
AB  - The reparation of vessel 970 is shown, since the risk is
very high (close to the worst case of both probability and
consequence, being the highest). Since the defect location
was not suitable for digging out and repair welding, it was
decided to make a circumferential stiffener, to reduce the
stress acting on the welded joint, so that both the stress
intensity factor and net stress are reduced significantly.
PB  - Beograd : DIVK
T2  - Integritet i vek konstrukcija
T1  - Stiffener as a special design solution for pressure vessel repair
EP  - 266
IS  - 3
SP  - 263
VL  - 22
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4279
ER  - 

@article{
author = "Vučetić, Trivun and Petrovski, Blagoj and Marković, Zlatan and Jeremić, Lazar and Sedmak, Aleksandar and Milošević, Nenad and Milovanović, Nikola",
year = "2022",
abstract = "Prikazana je popravka posude 970, jer je rizik bio veoma visok, blizu najgoreg slučaja verovatnoće i posledica. Kako položaj greške nije bio pogodan za iskopavanje i reparaturno zavarivanje, odlučeno je da se napravi ukrutni prsten,kako bi se smanjio napon u zavarenom spoju, tako da se i faktor intenziteta napona i neto napon značajno smanjuju., The reparation of vessel 970 is shown, since the risk is
very high (close to the worst case of both probability and
consequence, being the highest). Since the defect location
was not suitable for digging out and repair welding, it was
decided to make a circumferential stiffener, to reduce the
stress acting on the welded joint, so that both the stress
intensity factor and net stress are reduced significantly.",
publisher = "Beograd : DIVK",
journal = "Integritet i vek konstrukcija",
title = "Stiffener as a special design solution for pressure vessel repair",
pages = "266-263",
number = "3",
volume = "22",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4279"
}

Vučetić, T., Petrovski, B., Marković, Z., Jeremić, L., Sedmak, A., Milošević, N.,& Milovanović, N.. (2022). Stiffener as a special design solution for pressure vessel repair. in Integritet i vek konstrukcija
Beograd : DIVK., 22(3), 263-266.
https://hdl.handle.net/21.15107/rcub_machinery_4279

Vučetić T, Petrovski B, Marković Z, Jeremić L, Sedmak A, Milošević N, Milovanović N. Stiffener as a special design solution for pressure vessel repair. in Integritet i vek konstrukcija. 2022;22(3):263-266.
https://hdl.handle.net/21.15107/rcub_machinery_4279 .

Vučetić, Trivun, Petrovski, Blagoj, Marković, Zlatan, Jeremić, Lazar, Sedmak, Aleksandar, Milošević, Nenad, Milovanović, Nikola, "Stiffener as a special design solution for pressure vessel repair" in Integritet i vek konstrukcija, 22, no. 3 (2022):263-266,
https://hdl.handle.net/21.15107/rcub_machinery_4279 .

TY  - THES
AU  - Milošević, Nenad
PY  - 2021
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=8319
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:24144/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47610121
UR  - https://nardus.mpn.gov.rs/handle/123456789/18617
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/86
AB  - Određivanje stvarnog dijagrama napon-deformacija predstavlja višedecenijski problem jer metode određivanja deformacija, po sve tri ose, u realnom vremenu tek od nedavno predstavljaju realnost naučnog ispitivanja. Napretkom optičkih metoda za određivanje deformacija, prilikom ispitivanja zatezanjem došlo se do mogućnosti merenja deformacija uzorka u realnom vremenu. Ovu mogućnost je obezbedila primena stereometrijskog načina merenja deformacija. Dakle primenom dve kamere i softverskih paketa za obradu dobijenih rezultata, konačno postoji prilika da se odredi stvarni dijagram zatezanja tj. stvarni dijagram napon-deformacija. U okviru ove disertacije prikazana je metodologija određivanja stvarnog dijagrama napon-deformacija za ’’undermatching’’ zavareni spoj, na martenzitnom čeliku. Korišćena je korelacija digitalnih slika (DIC) i metoda konačnih elemenata (FEM) uz upotrebu softverskih paketa Aramis i Abaqus. Dijagram zatezanja koji se najčešće koristi naziva se ''inženjerski dijagram'', jer naponi i deformacije koji su predstavljeni na njemu nisu stvarni tj. dobijeni su upotrebom formula koje važe samo do trenutka kada na epruveti počne stvaranje ''vrata''. Pored ovog dijagrama često se koristi i ''stvarni'' dijagram zatezanja, koji se dobija upotrebom korigovanih formula kojima je izračunat inženjerski dijagram. Ni ovaj pristup ne daje tačne vrednosti napona niti deformacija jer ne uzima u obzir suženje epruvete i lokalne promene dimenzija kao ni koncentraciju napona koja se javlja na mestu suženja. U okviru ove disertacije, razmotren je pristup da troosno stanje napona, koje se javlja nakon stvaranja ''vrata'', dovodi do porasta napona kom je epruveta izložena i predstavljen je način dobijanja potrebnih parametara za određivanje stvarnog dijagrama koji uzima u obzir i koncentraciju napona na mestu suženja koja je, kako će se ispostaviti, dominantan parametar za porast napona pored smanjenja površine poprečnog preseka epruvete. Predstavljena naponska analiza je urađena tako da nema uticaja osnovnih i dodatnih materijala na dobijene rezultate napona. Može se zaključiti da je predložena metoda pogodna za određivanje parametara čvrstoće i kod ostalih tipova zavarenih spojeva kao i osnovnih materijala u inverznom postupku. Dakle, prilikom ispitivanja materijala kod kojih nisu poznate početne vrednosti potrebnih dimenzija (''overmatching'' zavareni spojevi ili osnovni materijali), može se ustanoviti inverzna metoda preko merenja krajnjih dimenzija i izračunavanja početnih, čime bi se dobile sve potrebne dimenzije za upotrebu predložene metode.
AB  - Determining the actual stress-strain diagram is a decades-long problem, because real-time strain determination methods on all three axes have only recently become a reality of scientific testing. Advances in optical methods for determining strains during tensile testing have made it possible to measure sample strains in real time. This possibility was provided by the application of the stereometric method for strain measurement. Therefore, by applying two cameras and a software package for processing the obtained results, we are finally able to determine the actual tensile diagram, ie. Actual stress-strain diagram. This disertation presents the methodology for determininig the actual stress-strain diagram for undermatching welded joints on martensitic steel. Used methods are digital image correlation (DIC) and FEM with software packages Aramis and Abaqus. The tensile diagram which is commonly used is called an engineering diagram, because the stresses and strains presented are not true, ie. they are obtained using formulas that are valid only until cross section of the specimen begin to change, necking of the sample ocurs. In addition to the engineering diagram, there is also a ’true’ diagram obtained by using corrected formulas. This principle to, does not provide true results because it does not take into account the reduction of cross section and stress concentration that occurs at the necking site of the specimen. This disertation considered an approach that the triaxial stress state that occurs after the formation of the neck leads to an increase in the stress to which the specimen is exposed and presented a method of obtaining the necessary parameters for determining the actual diagram, which includes the stress concentration at the necking site of the specimen. The presented stress analysis was done so that there is no influence of basic and filler materials on the obtained results of stresses. It can be concluded that the proposed method is suitable for determining the strength parameters in other types of welded joints as well as basic materials in the inverse process. Therefore, when testing materials for which we do not have initial values of required dimensions (overmatching welded joints or basic materials), we can establish an inverse method by measuring the final dimensions of the sample and calculating the initial ones, which would give all the necessary dimensions for using the proposed method.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Primena stereometrijske metode merenja deformacije na određivanje dijagrama stvarni napon - stvarna deformacija heterogenih zavarenih spojeva
T1  - Application of stereometric deformation measurement method to assessment actual stress - strain diagram of heterogeneous welded joints
UR  - https://hdl.handle.net/21.15107/rcub_nardus_18617
ER  - 

@phdthesis{
author = "Milošević, Nenad",
year = "2021",
abstract = "Određivanje stvarnog dijagrama napon-deformacija predstavlja višedecenijski problem jer metode određivanja deformacija, po sve tri ose, u realnom vremenu tek od nedavno predstavljaju realnost naučnog ispitivanja. Napretkom optičkih metoda za određivanje deformacija, prilikom ispitivanja zatezanjem došlo se do mogućnosti merenja deformacija uzorka u realnom vremenu. Ovu mogućnost je obezbedila primena stereometrijskog načina merenja deformacija. Dakle primenom dve kamere i softverskih paketa za obradu dobijenih rezultata, konačno postoji prilika da se odredi stvarni dijagram zatezanja tj. stvarni dijagram napon-deformacija. U okviru ove disertacije prikazana je metodologija određivanja stvarnog dijagrama napon-deformacija za ’’undermatching’’ zavareni spoj, na martenzitnom čeliku. Korišćena je korelacija digitalnih slika (DIC) i metoda konačnih elemenata (FEM) uz upotrebu softverskih paketa Aramis i Abaqus. Dijagram zatezanja koji se najčešće koristi naziva se ''inženjerski dijagram'', jer naponi i deformacije koji su predstavljeni na njemu nisu stvarni tj. dobijeni su upotrebom formula koje važe samo do trenutka kada na epruveti počne stvaranje ''vrata''. Pored ovog dijagrama često se koristi i ''stvarni'' dijagram zatezanja, koji se dobija upotrebom korigovanih formula kojima je izračunat inženjerski dijagram. Ni ovaj pristup ne daje tačne vrednosti napona niti deformacija jer ne uzima u obzir suženje epruvete i lokalne promene dimenzija kao ni koncentraciju napona koja se javlja na mestu suženja. U okviru ove disertacije, razmotren je pristup da troosno stanje napona, koje se javlja nakon stvaranja ''vrata'', dovodi do porasta napona kom je epruveta izložena i predstavljen je način dobijanja potrebnih parametara za određivanje stvarnog dijagrama koji uzima u obzir i koncentraciju napona na mestu suženja koja je, kako će se ispostaviti, dominantan parametar za porast napona pored smanjenja površine poprečnog preseka epruvete. Predstavljena naponska analiza je urađena tako da nema uticaja osnovnih i dodatnih materijala na dobijene rezultate napona. Može se zaključiti da je predložena metoda pogodna za određivanje parametara čvrstoće i kod ostalih tipova zavarenih spojeva kao i osnovnih materijala u inverznom postupku. Dakle, prilikom ispitivanja materijala kod kojih nisu poznate početne vrednosti potrebnih dimenzija (''overmatching'' zavareni spojevi ili osnovni materijali), može se ustanoviti inverzna metoda preko merenja krajnjih dimenzija i izračunavanja početnih, čime bi se dobile sve potrebne dimenzije za upotrebu predložene metode., Determining the actual stress-strain diagram is a decades-long problem, because real-time strain determination methods on all three axes have only recently become a reality of scientific testing. Advances in optical methods for determining strains during tensile testing have made it possible to measure sample strains in real time. This possibility was provided by the application of the stereometric method for strain measurement. Therefore, by applying two cameras and a software package for processing the obtained results, we are finally able to determine the actual tensile diagram, ie. Actual stress-strain diagram. This disertation presents the methodology for determininig the actual stress-strain diagram for undermatching welded joints on martensitic steel. Used methods are digital image correlation (DIC) and FEM with software packages Aramis and Abaqus. The tensile diagram which is commonly used is called an engineering diagram, because the stresses and strains presented are not true, ie. they are obtained using formulas that are valid only until cross section of the specimen begin to change, necking of the sample ocurs. In addition to the engineering diagram, there is also a ’true’ diagram obtained by using corrected formulas. This principle to, does not provide true results because it does not take into account the reduction of cross section and stress concentration that occurs at the necking site of the specimen. This disertation considered an approach that the triaxial stress state that occurs after the formation of the neck leads to an increase in the stress to which the specimen is exposed and presented a method of obtaining the necessary parameters for determining the actual diagram, which includes the stress concentration at the necking site of the specimen. The presented stress analysis was done so that there is no influence of basic and filler materials on the obtained results of stresses. It can be concluded that the proposed method is suitable for determining the strength parameters in other types of welded joints as well as basic materials in the inverse process. Therefore, when testing materials for which we do not have initial values of required dimensions (overmatching welded joints or basic materials), we can establish an inverse method by measuring the final dimensions of the sample and calculating the initial ones, which would give all the necessary dimensions for using the proposed method.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Primena stereometrijske metode merenja deformacije na određivanje dijagrama stvarni napon - stvarna deformacija heterogenih zavarenih spojeva, Application of stereometric deformation measurement method to assessment actual stress - strain diagram of heterogeneous welded joints",
url = "https://hdl.handle.net/21.15107/rcub_nardus_18617"
}

Milošević, N.. (2021). Primena stereometrijske metode merenja deformacije na određivanje dijagrama stvarni napon - stvarna deformacija heterogenih zavarenih spojeva. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_18617

Milošević N. Primena stereometrijske metode merenja deformacije na određivanje dijagrama stvarni napon - stvarna deformacija heterogenih zavarenih spojeva. 2021;.
https://hdl.handle.net/21.15107/rcub_nardus_18617 .

Milošević, Nenad, "Primena stereometrijske metode merenja deformacije na određivanje dijagrama stvarni napon - stvarna deformacija heterogenih zavarenih spojeva" (2021),
https://hdl.handle.net/21.15107/rcub_nardus_18617 .

TY  - THES
AU  - Milošević, Nenad
PY  - 2021
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=8319
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:24144/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47610121
UR  - https://nardus.mpn.gov.rs/handle/123456789/18617
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5567
AB  - Одређивање стварног дијаграма напон-деформација представља вишедеценијски проблем јер методе одређивања деформација, по све три осе, у реалном времену тек од недавно представљају реалност научног испитивања. Напретком оптичких метода за одређивање деформација, приликом испитивања затезањем дошло се до могућности мерења деформација узоркa у реалном времену. Ову могућност је обезбедила примена стереометријског начина мерења деформација. Дакле применом две камере и софтверских пакета за обраду добијених резултата, коначно постоји прилика да се одреди стварни дијаграм затезања тј. стварни дијаграм напон-деформација. У оквиру ове дисертације приказана је методологија одређивања стварног дијаграма напон-деформација за ’’undermatching’’ заварени спој, на мартензитном челику. Коришћена је корелација дигиталних слика (DIC) и метода коначних елемената (FEM) уз употребу софтверских пакета Aramis и Abaqus.Дијаграм затезања који се најчешће користи назива се ''инжењерски дијаграм'', јер напони и деформације који су представљени на њему нису стварни тј. добијени су употребом формула које важе само до тренутка када на епрувети почне стварање ''врата''. Поред овог дијаграма често се користи и ''стварни'' дијаграм затезања, који се добија употребом коригованих формула којима је израчунат инжењерски дијаграм. Ни овај приступ не даје тачне вредности напона нити деформација јер не узима у обзир сужење епрувете и локалне промене димензија као ни концентрацију напона која се јавља на месту сужења. У оквиру ове дисертације, размотрен је приступ да троосно стање напона, које се јавља након стварања ''врата'', доводи до пораста напона ком је епрувета изложена и представљен је начин добијања потребних параметара за одређивање стварног дијаграма који узима у обзир и концентрацију напона на месту сужења која је, како ће се испоставити, доминантан параметар за пораст напона поред смањења површине попречног пресека епрувете. Представљена напонска анализа је урађена тако да нема утицаја основних и додатних материјала на добијене резултате напона. Може се закључити да је предложена метода погодна за одређивање параметара чврстоће и код осталих типова заварених спојева као и основних материјала у инверзном поступку. Дакле, приликом испитивања материјала код којих нису познате почетне вредности потребних димензија (''overmatching'' заварени спојеви или основни материјали), може се установити инверзна метода преко мерења крајњих димензија и израчунавања почетних, чиме би се добиле све потребне димензије за употребу предложене методе.
AB  - Determining the actual stress-strain diagram is a decades-long problem, because real-time strain determination methods on all three axes have only recently become a reality of scientific testing. Advances in optical methods for determining strains during tensile testing have made it possible to measure sample strains in real time. This possibility was provided by the application of the stereometric method for strain measurement. Therefore, by applying two cameras and a software package for processing the obtained results, we are finally able to determine the actual tensile diagram, ie. Actual stress-strain diagram. This disertation presents the methodology for determininig the actual stress-strain diagram for undermatching welded joints on martensitic steel. Used methods are digital image correlation (DIC) and FEM with software packages Aramis and Abaqus.The tensile diagram which is commonly used is called an engineering diagram, because the stresses and strains presented are not true, ie. they are obtained using formulas that are valid only until cross section of the specimen begin to change, necking of the sample ocurs. In addition to the engineering diagram, there is also a ’true’ diagram obtained by using corrected formulas. This principle to, does not provide true results because it does not take into account the reduction of cross section and stress concentration that occurs at the necking site of the specimen. This disertation considered an approach that the triaxial stress state that occurs after the formation of the neck leads to an increase in the stress to which the specimen is exposed and presented a method of obtaining the necessary parameters for determining the actual diagram, which includes the stress concentration at the necking site of the specimen. The presented stress analysis was done so that there is no influence of basic and filler materials on the obtained results of stresses. It can be concluded that the proposed method is suitable for determining the strength parameters in other types of welded joints as well as basic materials in the inverse process. Therefore, when testing materials for which we do not have initial values of required dimensions (overmatching welded joints or basic materials), we can establish an inverse method by measuring the final dimensions of the sample and calculating the initial ones, which would give all the necessary dimensions for using the proposed method.
PB  - Универзитет у Београду, Машински факултет
T2  - Универзитет у Београду
T1  - Примена стереометријске методе мерења деформације на одређивање дијаграма стварни напон - стварна деформација хетерогених заварених спојева
UR  - https://hdl.handle.net/21.15107/rcub_nardus_18617
ER  - 

@phdthesis{
author = "Milošević, Nenad",
year = "2021",
abstract = "Одређивање стварног дијаграма напон-деформација представља вишедеценијски проблем јер методе одређивања деформација, по све три осе, у реалном времену тек од недавно представљају реалност научног испитивања. Напретком оптичких метода за одређивање деформација, приликом испитивања затезањем дошло се до могућности мерења деформација узоркa у реалном времену. Ову могућност је обезбедила примена стереометријског начина мерења деформација. Дакле применом две камере и софтверских пакета за обраду добијених резултата, коначно постоји прилика да се одреди стварни дијаграм затезања тј. стварни дијаграм напон-деформација. У оквиру ове дисертације приказана је методологија одређивања стварног дијаграма напон-деформација за ’’undermatching’’ заварени спој, на мартензитном челику. Коришћена је корелација дигиталних слика (DIC) и метода коначних елемената (FEM) уз употребу софтверских пакета Aramis и Abaqus.Дијаграм затезања који се најчешће користи назива се ''инжењерски дијаграм'', јер напони и деформације који су представљени на њему нису стварни тј. добијени су употребом формула које важе само до тренутка када на епрувети почне стварање ''врата''. Поред овог дијаграма често се користи и ''стварни'' дијаграм затезања, који се добија употребом коригованих формула којима је израчунат инжењерски дијаграм. Ни овај приступ не даје тачне вредности напона нити деформација јер не узима у обзир сужење епрувете и локалне промене димензија као ни концентрацију напона која се јавља на месту сужења. У оквиру ове дисертације, размотрен је приступ да троосно стање напона, које се јавља након стварања ''врата'', доводи до пораста напона ком је епрувета изложена и представљен је начин добијања потребних параметара за одређивање стварног дијаграма који узима у обзир и концентрацију напона на месту сужења која је, како ће се испоставити, доминантан параметар за пораст напона поред смањења површине попречног пресека епрувете. Представљена напонска анализа је урађена тако да нема утицаја основних и додатних материјала на добијене резултате напона. Може се закључити да је предложена метода погодна за одређивање параметара чврстоће и код осталих типова заварених спојева као и основних материјала у инверзном поступку. Дакле, приликом испитивања материјала код којих нису познате почетне вредности потребних димензија (''overmatching'' заварени спојеви или основни материјали), може се установити инверзна метода преко мерења крајњих димензија и израчунавања почетних, чиме би се добиле све потребне димензије за употребу предложене методе., Determining the actual stress-strain diagram is a decades-long problem, because real-time strain determination methods on all three axes have only recently become a reality of scientific testing. Advances in optical methods for determining strains during tensile testing have made it possible to measure sample strains in real time. This possibility was provided by the application of the stereometric method for strain measurement. Therefore, by applying two cameras and a software package for processing the obtained results, we are finally able to determine the actual tensile diagram, ie. Actual stress-strain diagram. This disertation presents the methodology for determininig the actual stress-strain diagram for undermatching welded joints on martensitic steel. Used methods are digital image correlation (DIC) and FEM with software packages Aramis and Abaqus.The tensile diagram which is commonly used is called an engineering diagram, because the stresses and strains presented are not true, ie. they are obtained using formulas that are valid only until cross section of the specimen begin to change, necking of the sample ocurs. In addition to the engineering diagram, there is also a ’true’ diagram obtained by using corrected formulas. This principle to, does not provide true results because it does not take into account the reduction of cross section and stress concentration that occurs at the necking site of the specimen. This disertation considered an approach that the triaxial stress state that occurs after the formation of the neck leads to an increase in the stress to which the specimen is exposed and presented a method of obtaining the necessary parameters for determining the actual diagram, which includes the stress concentration at the necking site of the specimen. The presented stress analysis was done so that there is no influence of basic and filler materials on the obtained results of stresses. It can be concluded that the proposed method is suitable for determining the strength parameters in other types of welded joints as well as basic materials in the inverse process. Therefore, when testing materials for which we do not have initial values of required dimensions (overmatching welded joints or basic materials), we can establish an inverse method by measuring the final dimensions of the sample and calculating the initial ones, which would give all the necessary dimensions for using the proposed method.",
publisher = "Универзитет у Београду, Машински факултет",
journal = "Универзитет у Београду",
title = "Примена стереометријске методе мерења деформације на одређивање дијаграма стварни напон - стварна деформација хетерогених заварених спојева",
url = "https://hdl.handle.net/21.15107/rcub_nardus_18617"
}

Milošević, N.. (2021). Примена стереометријске методе мерења деформације на одређивање дијаграма стварни напон - стварна деформација хетерогених заварених спојева. in Универзитет у Београду
Универзитет у Београду, Машински факултет..
https://hdl.handle.net/21.15107/rcub_nardus_18617

Milošević N. Примена стереометријске методе мерења деформације на одређивање дијаграма стварни напон - стварна деформација хетерогених заварених спојева. in Универзитет у Београду. 2021;.
https://hdl.handle.net/21.15107/rcub_nardus_18617 .

Milošević, Nenad, "Примена стереометријске методе мерења деформације на одређивање дијаграма стварни напон - стварна деформација хетерогених заварених спојева" in Универзитет у Београду (2021),
https://hdl.handle.net/21.15107/rcub_nardus_18617 .

TY  - GEN
AU  - Prokić Cvetković, Radica
AU  - Radaković, Zoran
AU  - Popović, Olivera
AU  - Bakić, Gordana
AU  - Đukić, Miloš
AU  - Rajičić, Bratislav
AU  - Milošević, Nenad
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6328
AB  - Priručnik za lab.ispitivanja iz Mašinskih materijala 1 i Mašinskih materijala 2
PB  - Univerzitet u Beogradu, Mašinski fakultet
T2  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe
VL  - II
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6328
ER  - 

@misc{
author = "Prokić Cvetković, Radica and Radaković, Zoran and Popović, Olivera and Bakić, Gordana and Đukić, Miloš and Rajičić, Bratislav and Milošević, Nenad",
year = "2021",
abstract = "Priručnik za lab.ispitivanja iz Mašinskih materijala 1 i Mašinskih materijala 2",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
journal = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe",
volume = "II",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6328"
}

Prokić Cvetković, R., Radaković, Z., Popović, O., Bakić, G., Đukić, M., Rajičić, B.,& Milošević, N.. (2021). Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe. in Univerzitet u Beogradu, Mašinski fakultet
Univerzitet u Beogradu, Mašinski fakultet., II.
https://hdl.handle.net/21.15107/rcub_machinery_6328

Prokić Cvetković R, Radaković Z, Popović O, Bakić G, Đukić M, Rajičić B, Milošević N. Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe. in Univerzitet u Beogradu, Mašinski fakultet. 2021;II.
https://hdl.handle.net/21.15107/rcub_machinery_6328 .

Prokić Cvetković, Radica, Radaković, Zoran, Popović, Olivera, Bakić, Gordana, Đukić, Miloš, Rajičić, Bratislav, Milošević, Nenad, "Mašinski materijali 1 i Mašinski materijali 2 - Priručnik za laboratorijske vežbe" in Univerzitet u Beogradu, Mašinski fakultet, II (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6328 .

TY  - JOUR
AU  - Jeremić, Lazar
AU  - Sedmak, Aleksandar
AU  - Milovanović, Nikola
AU  - Milošević, Nenad
AU  - Sedmak, Simon
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3629
AB  - Fracture mechanics approach for structural integrity assessment is described in the case of pressure vessels for compressed air. The results of non-destructive testing indicated unacceptable defects on the vessels and set a base for application of failure analysis diagrams (FAD) and risk-based analysis. Risk matrix are applied with the aim of assessment and analysis of the integrity of the vessels.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Assessment of integrity of pressure vessels for compressed air
EP  - 6
IS  - 1
SP  - 3
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3629
ER  - 

@article{
author = "Jeremić, Lazar and Sedmak, Aleksandar and Milovanović, Nikola and Milošević, Nenad and Sedmak, Simon",
year = "2021",
abstract = "Fracture mechanics approach for structural integrity assessment is described in the case of pressure vessels for compressed air. The results of non-destructive testing indicated unacceptable defects on the vessels and set a base for application of failure analysis diagrams (FAD) and risk-based analysis. Risk matrix are applied with the aim of assessment and analysis of the integrity of the vessels.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Assessment of integrity of pressure vessels for compressed air",
pages = "6-3",
number = "1",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3629"
}

Jeremić, L., Sedmak, A., Milovanović, N., Milošević, N.,& Sedmak, S.. (2021). Assessment of integrity of pressure vessels for compressed air. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 21(1), 3-6.
https://hdl.handle.net/21.15107/rcub_machinery_3629

Jeremić L, Sedmak A, Milovanović N, Milošević N, Sedmak S. Assessment of integrity of pressure vessels for compressed air. in Structural Integrity and Life. 2021;21(1):3-6.
https://hdl.handle.net/21.15107/rcub_machinery_3629 .

Jeremić, Lazar, Sedmak, Aleksandar, Milovanović, Nikola, Milošević, Nenad, Sedmak, Simon, "Assessment of integrity of pressure vessels for compressed air" in Structural Integrity and Life, 21, no. 1 (2021):3-6,
https://hdl.handle.net/21.15107/rcub_machinery_3629 .

TY  - JOUR
AU  - Milošević, Nenad
AU  - Sedmak, Aleksandar
AU  - Martić, Igor
AU  - Prokić-Cvetković, Radica
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3639
AB  - This paper presents a novel procedure for determining the actual stress- strain curves for undermatching rectangular welded joints made of martensitic armoured steel Armox 500T. The method is based on an analytical expression for true stress; digital image correlation (DIC) with two cameras, i.e. recording 3D deformations of samples; and finite element method (FEM) for stress state analysis of samples. Stresses obtained by dividing the force by the current cross-sectional area of the sample do not represent the actual stress occurring in the sample, because they do not take into account the stress concentration. In this paper we have analysed the stress concentration obtained numerically using Abaqus software in which the model's entered strain values are measured by DIC method.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life
T1  - Novel procedure to determine actual stress-strain curves
EP  - 40
IS  - 1
SP  - 37
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3639
ER  - 

@article{
author = "Milošević, Nenad and Sedmak, Aleksandar and Martić, Igor and Prokić-Cvetković, Radica",
year = "2021",
abstract = "This paper presents a novel procedure for determining the actual stress- strain curves for undermatching rectangular welded joints made of martensitic armoured steel Armox 500T. The method is based on an analytical expression for true stress; digital image correlation (DIC) with two cameras, i.e. recording 3D deformations of samples; and finite element method (FEM) for stress state analysis of samples. Stresses obtained by dividing the force by the current cross-sectional area of the sample do not represent the actual stress occurring in the sample, because they do not take into account the stress concentration. In this paper we have analysed the stress concentration obtained numerically using Abaqus software in which the model's entered strain values are measured by DIC method.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life",
title = "Novel procedure to determine actual stress-strain curves",
pages = "40-37",
number = "1",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3639"
}

Milošević, N., Sedmak, A., Martić, I.,& Prokić-Cvetković, R.. (2021). Novel procedure to determine actual stress-strain curves. in Structural Integrity and Life
Institut za ispitivanje materijala, Beograd., 21(1), 37-40.
https://hdl.handle.net/21.15107/rcub_machinery_3639

Milošević N, Sedmak A, Martić I, Prokić-Cvetković R. Novel procedure to determine actual stress-strain curves. in Structural Integrity and Life. 2021;21(1):37-40.
https://hdl.handle.net/21.15107/rcub_machinery_3639 .

Milošević, Nenad, Sedmak, Aleksandar, Martić, Igor, Prokić-Cvetković, Radica, "Novel procedure to determine actual stress-strain curves" in Structural Integrity and Life, 21, no. 1 (2021):37-40,
https://hdl.handle.net/21.15107/rcub_machinery_3639 .

TY  - JOUR
AU  - Jovičić, Radomir
AU  - Jeremić, Lazar
AU  - Milošević, Nenad
AU  - Sedmak, Aleksandar
AU  - Milovanović, Nikola
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3589
AB  - The paper describes non-destructive testing and the repair welding technology for eliminating defects in the pressure equipment of RHE BB (Bajina Basta) (located in Serbia). The obtained results had justified the proposed technology.
PB  - Institut za ispitivanje materijala, Beograd
T2  - Structural Integrity and Life-Integritet I Vek Konstrukcija
T1  - Repair welding of pressure equipment with unacceptable defects
EP  - 167
IS  - 2
SP  - 163
VL  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_3589
ER  - 

@article{
author = "Jovičić, Radomir and Jeremić, Lazar and Milošević, Nenad and Sedmak, Aleksandar and Milovanović, Nikola",
year = "2021",
abstract = "The paper describes non-destructive testing and the repair welding technology for eliminating defects in the pressure equipment of RHE BB (Bajina Basta) (located in Serbia). The obtained results had justified the proposed technology.",
publisher = "Institut za ispitivanje materijala, Beograd",
journal = "Structural Integrity and Life-Integritet I Vek Konstrukcija",
title = "Repair welding of pressure equipment with unacceptable defects",
pages = "167-163",
number = "2",
volume = "21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_3589"
}

Jovičić, R., Jeremić, L., Milošević, N., Sedmak, A.,& Milovanović, N.. (2021). Repair welding of pressure equipment with unacceptable defects. in Structural Integrity and Life-Integritet I Vek Konstrukcija
Institut za ispitivanje materijala, Beograd., 21(2), 163-167.
https://hdl.handle.net/21.15107/rcub_machinery_3589

Jovičić R, Jeremić L, Milošević N, Sedmak A, Milovanović N. Repair welding of pressure equipment with unacceptable defects. in Structural Integrity and Life-Integritet I Vek Konstrukcija. 2021;21(2):163-167.
https://hdl.handle.net/21.15107/rcub_machinery_3589 .

Jovičić, Radomir, Jeremić, Lazar, Milošević, Nenad, Sedmak, Aleksandar, Milovanović, Nikola, "Repair welding of pressure equipment with unacceptable defects" in Structural Integrity and Life-Integritet I Vek Konstrukcija, 21, no. 2 (2021):163-167,
https://hdl.handle.net/21.15107/rcub_machinery_3589 .

TY  - JOUR
AU  - Milošević, Nenad
AU  - Younise, Bashir
AU  - Sedmak, Aleksandar
AU  - Travica, Milan
AU  - Mitrović, A.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3522
AB  - Digital Image Correlation (DIC) is applied to evaluate stress-strain diagrams for welded joints in two different ways. The first one is based on the measures strains along the welded joint, including all 3 zones of interest, base metal (BM), weld metal (WM), and heat-affected-zone (HAZ) subdivided into fine grain (FG) and coarse grain (CG) subzones. Specially designed iterative procedure has been used to determine coefficient of Holomon law to get true stress-strain curves for welded joint made of HSLA steel Niomol 490. The second one presents new methodology for evaluating true stress-strain diagram, based on measured values of contraction, as obtained by 3D DIC, rather than more conventional analytical formulas. New methodology is applied to undermatched welded joint, made of martensitic steels X10 CrMoVNb 9-1.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Evaluation of true stress-strain diagrams for welded joints by application of Digital Image Correlation
VL  - 128
DO  - 10.1016/j.engfailanal.2021.105609
ER  - 

@article{
author = "Milošević, Nenad and Younise, Bashir and Sedmak, Aleksandar and Travica, Milan and Mitrović, A.",
year = "2021",
abstract = "Digital Image Correlation (DIC) is applied to evaluate stress-strain diagrams for welded joints in two different ways. The first one is based on the measures strains along the welded joint, including all 3 zones of interest, base metal (BM), weld metal (WM), and heat-affected-zone (HAZ) subdivided into fine grain (FG) and coarse grain (CG) subzones. Specially designed iterative procedure has been used to determine coefficient of Holomon law to get true stress-strain curves for welded joint made of HSLA steel Niomol 490. The second one presents new methodology for evaluating true stress-strain diagram, based on measured values of contraction, as obtained by 3D DIC, rather than more conventional analytical formulas. New methodology is applied to undermatched welded joint, made of martensitic steels X10 CrMoVNb 9-1.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Evaluation of true stress-strain diagrams for welded joints by application of Digital Image Correlation",
volume = "128",
doi = "10.1016/j.engfailanal.2021.105609"
}

Milošević, N., Younise, B., Sedmak, A., Travica, M.,& Mitrović, A.. (2021). Evaluation of true stress-strain diagrams for welded joints by application of Digital Image Correlation. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 128.
https://doi.org/10.1016/j.engfailanal.2021.105609

Milošević N, Younise B, Sedmak A, Travica M, Mitrović A. Evaluation of true stress-strain diagrams for welded joints by application of Digital Image Correlation. in Engineering Failure Analysis. 2021;128.
doi:10.1016/j.engfailanal.2021.105609 .

Milošević, Nenad, Younise, Bashir, Sedmak, Aleksandar, Travica, Milan, Mitrović, A., "Evaluation of true stress-strain diagrams for welded joints by application of Digital Image Correlation" in Engineering Failure Analysis, 128 (2021),
https://doi.org/10.1016/j.engfailanal.2021.105609 . .

TY  - JOUR
AU  - Milošević, Nenad
AU  - Sedmak, Aleksandar
AU  - Bakić, Gordana
AU  - Lazić, Vukić
AU  - Milošević, Miloš
AU  - Mladenović, Goran
AU  - Maslarević, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3485
AB  - This paper presents new methodology for determining the actual stress-strain diagram based on analytical equations, in combination with numerical and experimental data. The first step was to use the 3D digital image correlation (DIC) to estimate true stress-strain diagram by replacing common analytical expression for contraction with measured values. Next step was to estimate the stress concentration by using a new methodology, based on recently introduced analytical expressions and numerical verification by the finite element method (FEM), to obtain actual stress-strain diagrams, as named in this paper. The essence of new methodology is to introduce stress concentration factor into the procedure of actual stress evaluation. New methodology is then applied to determine actual stress-strain diagrams for two undermatched welded joints with different rectangular cross-section and groove shapes, made of martensitic steels X10 CrMoVNb 9-1 and Armox 500T. Results indicated that new methodology is a general one, since it is not dependent on welded joint material and geometry.
PB  - MDPI, Basel
T2  - Materials
T1  - Determination of the Actual Stress-Strain Diagram for Undermatching Welded Joint Using DIC and FEM
IS  - 16
VL  - 14
DO  - 10.3390/ma14164691
ER  - 

@article{
author = "Milošević, Nenad and Sedmak, Aleksandar and Bakić, Gordana and Lazić, Vukić and Milošević, Miloš and Mladenović, Goran and Maslarević, Aleksandar",
year = "2021",
abstract = "This paper presents new methodology for determining the actual stress-strain diagram based on analytical equations, in combination with numerical and experimental data. The first step was to use the 3D digital image correlation (DIC) to estimate true stress-strain diagram by replacing common analytical expression for contraction with measured values. Next step was to estimate the stress concentration by using a new methodology, based on recently introduced analytical expressions and numerical verification by the finite element method (FEM), to obtain actual stress-strain diagrams, as named in this paper. The essence of new methodology is to introduce stress concentration factor into the procedure of actual stress evaluation. New methodology is then applied to determine actual stress-strain diagrams for two undermatched welded joints with different rectangular cross-section and groove shapes, made of martensitic steels X10 CrMoVNb 9-1 and Armox 500T. Results indicated that new methodology is a general one, since it is not dependent on welded joint material and geometry.",
publisher = "MDPI, Basel",
journal = "Materials",
title = "Determination of the Actual Stress-Strain Diagram for Undermatching Welded Joint Using DIC and FEM",
number = "16",
volume = "14",
doi = "10.3390/ma14164691"
}

Milošević, N., Sedmak, A., Bakić, G., Lazić, V., Milošević, M., Mladenović, G.,& Maslarević, A.. (2021). Determination of the Actual Stress-Strain Diagram for Undermatching Welded Joint Using DIC and FEM. in Materials
MDPI, Basel., 14(16).
https://doi.org/10.3390/ma14164691

Milošević N, Sedmak A, Bakić G, Lazić V, Milošević M, Mladenović G, Maslarević A. Determination of the Actual Stress-Strain Diagram for Undermatching Welded Joint Using DIC and FEM. in Materials. 2021;14(16).
doi:10.3390/ma14164691 .

Milošević, Nenad, Sedmak, Aleksandar, Bakić, Gordana, Lazić, Vukić, Milošević, Miloš, Mladenović, Goran, Maslarević, Aleksandar, "Determination of the Actual Stress-Strain Diagram for Undermatching Welded Joint Using DIC and FEM" in Materials, 14, no. 16 (2021),
https://doi.org/10.3390/ma14164691 . .

TY  - CONF
AU  - Younise, Bashir
AU  - Sedmak, Aleksandar
AU  - Milošević, Nenad
AU  - Rakin, Marko
AU  - Međo, Bojan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3381
AB  - True stress-strain curves of HSLA steel welded joint regions were estimated by using numerical simulation of strains measured by DIC and special iteration procedure to match the results. Strains were measured at certain level of loading in all regions of welded joint with different tensile properties, namely base metal (BM), weld metal (WM) and two subzones of Heat-Affected-Zone (fine grain, FGHAZ, and coarse grain CGHAZ). By converting engineering stress (load divided by initial cross section area) into true stress, experimental true stress-true strain curves are obtained and used as initial iteration for the Finite Element Method (FEM) simulation, after being fitted by the power law relation for stress-strain curves. Obtained results are then compared with the experimental results to fmd the differences and make appropriate correction in power law curves and make as many iterations as needed before the differences become small enough. This procedure has been verified by an example of welded tensile panel.
PB  - Elsevier, Amsterdam
C3  - Procedia Structural Integrity - 1st Virtual European Conference on Fracture - Vecf1
T1  - True Stress-strain Curves for HSLA Steel Weldment - Iteration Procedure Based on DIC and FEM
EP  - 1997
SP  - 1992
VL  - 28
DO  - 10.1016/j.prostr.2020.11.023
ER  - 

@conference{
author = "Younise, Bashir and Sedmak, Aleksandar and Milošević, Nenad and Rakin, Marko and Međo, Bojan",
year = "2020",
abstract = "True stress-strain curves of HSLA steel welded joint regions were estimated by using numerical simulation of strains measured by DIC and special iteration procedure to match the results. Strains were measured at certain level of loading in all regions of welded joint with different tensile properties, namely base metal (BM), weld metal (WM) and two subzones of Heat-Affected-Zone (fine grain, FGHAZ, and coarse grain CGHAZ). By converting engineering stress (load divided by initial cross section area) into true stress, experimental true stress-true strain curves are obtained and used as initial iteration for the Finite Element Method (FEM) simulation, after being fitted by the power law relation for stress-strain curves. Obtained results are then compared with the experimental results to fmd the differences and make appropriate correction in power law curves and make as many iterations as needed before the differences become small enough. This procedure has been verified by an example of welded tensile panel.",
publisher = "Elsevier, Amsterdam",
journal = "Procedia Structural Integrity - 1st Virtual European Conference on Fracture - Vecf1",
title = "True Stress-strain Curves for HSLA Steel Weldment - Iteration Procedure Based on DIC and FEM",
pages = "1997-1992",
volume = "28",
doi = "10.1016/j.prostr.2020.11.023"
}

Younise, B., Sedmak, A., Milošević, N., Rakin, M.,& Međo, B.. (2020). True Stress-strain Curves for HSLA Steel Weldment - Iteration Procedure Based on DIC and FEM. in Procedia Structural Integrity - 1st Virtual European Conference on Fracture - Vecf1
Elsevier, Amsterdam., 28, 1992-1997.
https://doi.org/10.1016/j.prostr.2020.11.023

Younise B, Sedmak A, Milošević N, Rakin M, Međo B. True Stress-strain Curves for HSLA Steel Weldment - Iteration Procedure Based on DIC and FEM. in Procedia Structural Integrity - 1st Virtual European Conference on Fracture - Vecf1. 2020;28:1992-1997.
doi:10.1016/j.prostr.2020.11.023 .

Younise, Bashir, Sedmak, Aleksandar, Milošević, Nenad, Rakin, Marko, Međo, Bojan, "True Stress-strain Curves for HSLA Steel Weldment - Iteration Procedure Based on DIC and FEM" in Procedia Structural Integrity - 1st Virtual European Conference on Fracture - Vecf1, 28 (2020):1992-1997,
https://doi.org/10.1016/j.prostr.2020.11.023 . .

TY  - CONF
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
AU  - Mladenović, Goran
AU  - Tanović, Ljubodrag
AU  - Milošević, Miloš
AU  - Milovanović, Aleksa
AU  - Milošević, Nenad
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7358
AB  - Fused Filament Fabrication (FFF) represent one of the technologies to process polymer materials in the way
of rapid prototyping. Parts produced by this method not so rarely have good mechanical properties in the
tangential direction in relation to the direction of the layers, but at the same time poor in the normal direction.
In order to produce a part that has desired mechanical properties in all directions, it is necessary to precisely
established printing conditions, which is one of the goals of this paper. Tensile strength experiments were
conducted on bio-based plastic PLA (polylactic acid) specimens. Specimens were produced on a 3D printer,
with printing speed from 40 up to 120 mm/min, and nozzle temperature from 170 up to 210 °C. It was
established that tensile strength has a great dependence on the printing conditions. Also, the type of fracture
varies depending on printing temperature. Although there is a trend of maximal deformation growth with
increasing printing temperature, at lower printing temperature, more ductile fracture of the specimens occurs.
Increasing the printing temperature, fracture of the specimens becomes more brittle. At the transition from one
to another, tearing of the specimens occur. Such results play a key role in the successful implementation of
such a processing type of polymer materials in the automotive, aerospace, medical, etc. industries.
PB  - Innovation Center of Faculty of Mechanical Engineering
C3  - International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor)
T1  - Experimental determination of type of fracture PLA specimens in the function of printing conditions
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7358
ER  - 

@conference{
author = "Popović, Mihajlo and Pjević, Miloš and Mladenović, Goran and Tanović, Ljubodrag and Milošević, Miloš and Milovanović, Aleksa and Milošević, Nenad",
year = "2019",
abstract = "Fused Filament Fabrication (FFF) represent one of the technologies to process polymer materials in the way
of rapid prototyping. Parts produced by this method not so rarely have good mechanical properties in the
tangential direction in relation to the direction of the layers, but at the same time poor in the normal direction.
In order to produce a part that has desired mechanical properties in all directions, it is necessary to precisely
established printing conditions, which is one of the goals of this paper. Tensile strength experiments were
conducted on bio-based plastic PLA (polylactic acid) specimens. Specimens were produced on a 3D printer,
with printing speed from 40 up to 120 mm/min, and nozzle temperature from 170 up to 210 °C. It was
established that tensile strength has a great dependence on the printing conditions. Also, the type of fracture
varies depending on printing temperature. Although there is a trend of maximal deformation growth with
increasing printing temperature, at lower printing temperature, more ductile fracture of the specimens occurs.
Increasing the printing temperature, fracture of the specimens becomes more brittle. At the transition from one
to another, tearing of the specimens occur. Such results play a key role in the successful implementation of
such a processing type of polymer materials in the automotive, aerospace, medical, etc. industries.",
publisher = "Innovation Center of Faculty of Mechanical Engineering",
journal = "International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor)",
title = "Experimental determination of type of fracture PLA specimens in the function of printing conditions",
pages = "42",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7358"
}

Popović, M., Pjević, M., Mladenović, G., Tanović, L., Milošević, M., Milovanović, A.,& Milošević, N.. (2019). Experimental determination of type of fracture PLA specimens in the function of printing conditions. in International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor)
Innovation Center of Faculty of Mechanical Engineering., 42.
https://hdl.handle.net/21.15107/rcub_machinery_7358

Popović M, Pjević M, Mladenović G, Tanović L, Milošević M, Milovanović A, Milošević N. Experimental determination of type of fracture PLA specimens in the function of printing conditions. in International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor). 2019;:42.
https://hdl.handle.net/21.15107/rcub_machinery_7358 .

Popović, Mihajlo, Pjević, Miloš, Mladenović, Goran, Tanović, Ljubodrag, Milošević, Miloš, Milovanović, Aleksa, Milošević, Nenad, "Experimental determination of type of fracture PLA specimens in the function of printing conditions" in International conference of experimental and numerical investigations and new technologies (2019 ; Zlatibor) (2019):42,
https://hdl.handle.net/21.15107/rcub_machinery_7358 .

TY  - CONF
AU  - Popović, Mihajlo
AU  - Pjević, Miloš
AU  - Mladenović, Goran
AU  - Tanović, Ljubodrag
AU  - Milošević, Miloš
AU  - Milovanović, Aleksa
AU  - Milošević, Nenad
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5412
AB  - Fused Filament Fabrication (FFF) represent one of the technologies to process polymer materials in the way of rapid prototyping. Parts produced by this method not so rarely have good mechanical properties in the tangential direction in relation to the direction of the layers, but at the same time poor in the normal direction. In order to produce a part that has desired mechanical properties in all directions, it is necessary to precisely established printing conditions, which is one of the goals of this paper. Tensile strength experiments were conducted on bio-based plastic PLA (polylactic acid) specimens. Specimens were produced on a 3D printer, with printing speed from 40 up to 120 mm/min, and nozzle temperature from 170 up to 210 °C. It was established that tensile strength has a great dependence on the printing conditions. Also, the type of fracture varies depending on printing temperature. Although there is a trend of maximal deformation growth with increasing printing temperature, at lower printing temperature, more ductile fracture of the specimens occurs. Increasing the printing temperature, fracture of the specimens becomes more brittle. At the transition from one to another, tearing of the specimens occur. Such results play a key role in the successful implementation of such a processing type of polymer materials in the automotive, aerospace, medical, etc. industries.
PB  - University of Belgrade, faculty of Mechanical Engineering
C3  - International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2019" - Book of Abstracts
T1  - Experimental determination of type of fracture pla specimens in the function of printing conditions
EP  - 42
SP  - 42
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5412
ER  - 

@conference{
author = "Popović, Mihajlo and Pjević, Miloš and Mladenović, Goran and Tanović, Ljubodrag and Milošević, Miloš and Milovanović, Aleksa and Milošević, Nenad",
year = "2019",
abstract = "Fused Filament Fabrication (FFF) represent one of the technologies to process polymer materials in the way of rapid prototyping. Parts produced by this method not so rarely have good mechanical properties in the tangential direction in relation to the direction of the layers, but at the same time poor in the normal direction. In order to produce a part that has desired mechanical properties in all directions, it is necessary to precisely established printing conditions, which is one of the goals of this paper. Tensile strength experiments were conducted on bio-based plastic PLA (polylactic acid) specimens. Specimens were produced on a 3D printer, with printing speed from 40 up to 120 mm/min, and nozzle temperature from 170 up to 210 °C. It was established that tensile strength has a great dependence on the printing conditions. Also, the type of fracture varies depending on printing temperature. Although there is a trend of maximal deformation growth with increasing printing temperature, at lower printing temperature, more ductile fracture of the specimens occurs. Increasing the printing temperature, fracture of the specimens becomes more brittle. At the transition from one to another, tearing of the specimens occur. Such results play a key role in the successful implementation of such a processing type of polymer materials in the automotive, aerospace, medical, etc. industries.",
publisher = "University of Belgrade, faculty of Mechanical Engineering",
journal = "International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2019" - Book of Abstracts",
title = "Experimental determination of type of fracture pla specimens in the function of printing conditions",
pages = "42-42",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5412"
}

Popović, M., Pjević, M., Mladenović, G., Tanović, L., Milošević, M., Milovanović, A.,& Milošević, N.. (2019). Experimental determination of type of fracture pla specimens in the function of printing conditions. in International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2019" - Book of Abstracts
University of Belgrade, faculty of Mechanical Engineering., 42-42.
https://hdl.handle.net/21.15107/rcub_machinery_5412

Popović M, Pjević M, Mladenović G, Tanović L, Milošević M, Milovanović A, Milošević N. Experimental determination of type of fracture pla specimens in the function of printing conditions. in International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2019" - Book of Abstracts. 2019;:42-42.
https://hdl.handle.net/21.15107/rcub_machinery_5412 .

Popović, Mihajlo, Pjević, Miloš, Mladenović, Goran, Tanović, Ljubodrag, Milošević, Miloš, Milovanović, Aleksa, Milošević, Nenad, "Experimental determination of type of fracture pla specimens in the function of printing conditions" in International Conference of Experimental and Numerical Investigations and New Technologies "CNN TECH 2019" - Book of Abstracts (2019):42-42,
https://hdl.handle.net/21.15107/rcub_machinery_5412 .

TY  - PAT
AU  - Travica, Milan
AU  - Mitrović, Nenad
AU  - Mladenović, Goran
AU  - Milovanović, Aleksa
AU  - Milošević, Nenad
AU  - Milošević, Miloš
AU  - Petrović, Aleksandar
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4281
AB  - The tool is used to test the radial tensile characteristics of the pipeline material from which the specimen are made. The tool enables testing of steel ring specimen used in various industries (eg thermal power plants).
T1  - Pipe Ring Tensile Testing Tool (Alat za ispitivanje epruveta oblika prstena)
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4281
ER  - 

@misc{
author = "Travica, Milan and Mitrović, Nenad and Mladenović, Goran and Milovanović, Aleksa and Milošević, Nenad and Milošević, Miloš and Petrović, Aleksandar",
year = "2019",
abstract = "The tool is used to test the radial tensile characteristics of the pipeline material from which the specimen are made. The tool enables testing of steel ring specimen used in various industries (eg thermal power plants).",
title = "Pipe Ring Tensile Testing Tool (Alat za ispitivanje epruveta oblika prstena)",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4281"
}

Travica, M., Mitrović, N., Mladenović, G., Milovanović, A., Milošević, N., Milošević, M.,& Petrović, A.. (2019). Pipe Ring Tensile Testing Tool (Alat za ispitivanje epruveta oblika prstena). .
https://hdl.handle.net/21.15107/rcub_machinery_4281

Travica M, Mitrović N, Mladenović G, Milovanović A, Milošević N, Milošević M, Petrović A. Pipe Ring Tensile Testing Tool (Alat za ispitivanje epruveta oblika prstena). 2019;.
https://hdl.handle.net/21.15107/rcub_machinery_4281 .

Travica, Milan, Mitrović, Nenad, Mladenović, Goran, Milovanović, Aleksa, Milošević, Nenad, Milošević, Miloš, Petrović, Aleksandar, "Pipe Ring Tensile Testing Tool (Alat za ispitivanje epruveta oblika prstena)" (2019),
https://hdl.handle.net/21.15107/rcub_machinery_4281 .

TY  - CONF
AU  - Prokić-Cvetković, Radica
AU  - Popović, Olivera
AU  - Jovičić, Radomir
AU  - Milošević, Nenad
AU  - Burzić, Zijah
AU  - Cvetković, Ivana
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2884
AB  - In this paper is presented behavior of microalloyed steel weld metal with niobium during impact testing, as well as microstructural characterization. Impact tests were done on instrumented Charpy pendulum at room temperature, at -40 degrees C and -55 degrees C. At room temperature, crack propagation energy is much higher than crack initiation energy, while at -40 degrees C and -55 degrees C crack growth energy is lower than crack initiation energy. Fractographic investigation of the fracture surfaces has shown that at room temperature ductile trans-granular fracture is dominant, with a small amount of brittle trans-granular fracture. At lower temperature, the share of brittle fracture is increased, and inter-granular brittle fracture becomes dominant
PB  - Elsevier Science Bv, Amsterdam
C3  - Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
T1  - Microstructural and fracture analysis of microalloyed steel weld metal
EP  - 2226
SP  - 2221
VL  - 13
DO  - 10.1016/j.prostr.2018.12.137
ER  - 

@conference{
author = "Prokić-Cvetković, Radica and Popović, Olivera and Jovičić, Radomir and Milošević, Nenad and Burzić, Zijah and Cvetković, Ivana",
year = "2018",
abstract = "In this paper is presented behavior of microalloyed steel weld metal with niobium during impact testing, as well as microstructural characterization. Impact tests were done on instrumented Charpy pendulum at room temperature, at -40 degrees C and -55 degrees C. At room temperature, crack propagation energy is much higher than crack initiation energy, while at -40 degrees C and -55 degrees C crack growth energy is lower than crack initiation energy. Fractographic investigation of the fracture surfaces has shown that at room temperature ductile trans-granular fracture is dominant, with a small amount of brittle trans-granular fracture. At lower temperature, the share of brittle fracture is increased, and inter-granular brittle fracture becomes dominant",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity",
title = "Microstructural and fracture analysis of microalloyed steel weld metal",
pages = "2226-2221",
volume = "13",
doi = "10.1016/j.prostr.2018.12.137"
}

Prokić-Cvetković, R., Popović, O., Jovičić, R., Milošević, N., Burzić, Z.,& Cvetković, I.. (2018). Microstructural and fracture analysis of microalloyed steel weld metal. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity
Elsevier Science Bv, Amsterdam., 13, 2221-2226.
https://doi.org/10.1016/j.prostr.2018.12.137

Prokić-Cvetković R, Popović O, Jovičić R, Milošević N, Burzić Z, Cvetković I. Microstructural and fracture analysis of microalloyed steel weld metal. in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity. 2018;13:2221-2226.
doi:10.1016/j.prostr.2018.12.137 .

Prokić-Cvetković, Radica, Popović, Olivera, Jovičić, Radomir, Milošević, Nenad, Burzić, Zijah, Cvetković, Ivana, "Microstructural and fracture analysis of microalloyed steel weld metal" in Procedia Structural Integrity - ECF22 - Loading and environmental effects on structural integrity, 13 (2018):2221-2226,
https://doi.org/10.1016/j.prostr.2018.12.137 . .

TY  - CONF
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Milošević, Nenad
AU  - Jovičić, Radomir
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4270
AB  - Stabilnost procesa zavarivanja ima značajan uticaj na postizanje propisanog
nivoa kvaliteta zavarenog spoja. Povećanje stabilnosti utiče na smanjenje
mogućnosti pojave nesavršenosti, odnosno grešaka u samom spoju. Stabilnost procesa zavarivanja se ogleda u stabilnosti električnog luka. Promene
dužine luka tokom zavarivanja utiču na varijaciju parametara zavarivanja,
tačnije na jačinu struje i napon. Na osnovu praćenja parametara zavarivanja
u realnom vremenu može se izvršiti statistička analiza dobijenih rezultata.
U radu je prikazan uticaj brzine dovođenja žice i vrste zaštitne atmosfere na
stabilnost MIG/MAG postupka zavarivanja pri upotrebi metalne punjene
elektrodne žice.
C3  - Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications
T1  - Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja
EP  - 201
SP  - 197
DO  - 10.15308/Sinteza-2018-197-201
ER  - 

@conference{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Milošević, Nenad and Jovičić, Radomir",
year = "2018",
abstract = "Stabilnost procesa zavarivanja ima značajan uticaj na postizanje propisanog
nivoa kvaliteta zavarenog spoja. Povećanje stabilnosti utiče na smanjenje
mogućnosti pojave nesavršenosti, odnosno grešaka u samom spoju. Stabilnost procesa zavarivanja se ogleda u stabilnosti električnog luka. Promene
dužine luka tokom zavarivanja utiču na varijaciju parametara zavarivanja,
tačnije na jačinu struje i napon. Na osnovu praćenja parametara zavarivanja
u realnom vremenu može se izvršiti statistička analiza dobijenih rezultata.
U radu je prikazan uticaj brzine dovođenja žice i vrste zaštitne atmosfere na
stabilnost MIG/MAG postupka zavarivanja pri upotrebi metalne punjene
elektrodne žice.",
journal = "Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications",
title = "Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja",
pages = "201-197",
doi = "10.15308/Sinteza-2018-197-201"
}

Popović, O., Prokić-Cvetković, R., Milošević, N.,& Jovičić, R.. (2018). Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications, 197-201.
https://doi.org/10.15308/Sinteza-2018-197-201

Popović O, Prokić-Cvetković R, Milošević N, Jovičić R. Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications. 2018;:197-201.
doi:10.15308/Sinteza-2018-197-201 .

Popović, Olivera, Prokić-Cvetković, Radica, Milošević, Nenad, Jovičić, Radomir, "Uticaj zaštitne atmosfere i brzine dovođenja žice na stabilnost mig/mag postupka zavarivanja" in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications (2018):197-201,
https://doi.org/10.15308/Sinteza-2018-197-201 . .

TY  - CONF
AU  - Jovičić, Radomir
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Cvetković, Dragan
AU  - Milošević, Nenad
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4269
AB  - Zavarivanje se široko primenjuje u industriji pri izradi različite opreme,
mostova, kranova, transportnih sredstava i sl. Ono ima odlučujući uticaj na
kvalitet, pouzdanost, vek i cenu izrade navedenih konstrukcija. Međutim,
kvalitet izvedenih zavarenih spojeva je teško ili je često gotovo nemoguće
utvrditi ispitivanjima na samim konstrukcijama. Zbog toga je potrebno
praćenje toka izrade zavarenih konstrukcija od ugovaranja i projektovanja,
preko kvalifikacije i sertifikacije osoblja i opreme, kvalifikacije procedura
zavarivanja i kontrole tokom i nakon završene izrade konstrukcije. Zahtevi za
kvalitet koje treba ispuniti u pojedinim fazama izrade konstrukcija definisani
su u standardima serije EN ISO 3834.
Odstupanja izvedenog kvaliteta zavarenih spojeva od potrebnog najčešće
nastaju u fazi zavarivanja. Do sada nije postojala mogućnost za kontinualno
praćenje, beleženje i skladištenje podataka o parametrima zavarivanja. U radu
je prikazan sistem zasnovan na informacionim tehnologijama, koji omogućava
prikupljanje i beleženje podataka o parametrima zavarivanja, upotrebljenim
materijalima i angažovanim zavarivačima, njihovo poređenje sa zadatim vrednostima i obustavljanje zavarivanja u slučajevima utvrđenih odstupanja. Na
taj način se znatno poboljšava kvalitet i pouzdanost zavarenih konstrukcija.
C3  - Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications
T1  - Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija
EP  - 252
SP  - 248
DO  - 10.15308/Sinteza-2018-248-252
ER  - 

@conference{
author = "Jovičić, Radomir and Popović, Olivera and Prokić-Cvetković, Radica and Cvetković, Dragan and Milošević, Nenad",
year = "2018",
abstract = "Zavarivanje se široko primenjuje u industriji pri izradi različite opreme,
mostova, kranova, transportnih sredstava i sl. Ono ima odlučujući uticaj na
kvalitet, pouzdanost, vek i cenu izrade navedenih konstrukcija. Međutim,
kvalitet izvedenih zavarenih spojeva je teško ili je često gotovo nemoguće
utvrditi ispitivanjima na samim konstrukcijama. Zbog toga je potrebno
praćenje toka izrade zavarenih konstrukcija od ugovaranja i projektovanja,
preko kvalifikacije i sertifikacije osoblja i opreme, kvalifikacije procedura
zavarivanja i kontrole tokom i nakon završene izrade konstrukcije. Zahtevi za
kvalitet koje treba ispuniti u pojedinim fazama izrade konstrukcija definisani
su u standardima serije EN ISO 3834.
Odstupanja izvedenog kvaliteta zavarenih spojeva od potrebnog najčešće
nastaju u fazi zavarivanja. Do sada nije postojala mogućnost za kontinualno
praćenje, beleženje i skladištenje podataka o parametrima zavarivanja. U radu
je prikazan sistem zasnovan na informacionim tehnologijama, koji omogućava
prikupljanje i beleženje podataka o parametrima zavarivanja, upotrebljenim
materijalima i angažovanim zavarivačima, njihovo poređenje sa zadatim vrednostima i obustavljanje zavarivanja u slučajevima utvrđenih odstupanja. Na
taj način se znatno poboljšava kvalitet i pouzdanost zavarenih konstrukcija.",
journal = "Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications",
title = "Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija",
pages = "252-248",
doi = "10.15308/Sinteza-2018-248-252"
}

Jovičić, R., Popović, O., Prokić-Cvetković, R., Cvetković, D.,& Milošević, N.. (2018). Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications, 248-252.
https://doi.org/10.15308/Sinteza-2018-248-252

Jovičić R, Popović O, Prokić-Cvetković R, Cvetković D, Milošević N. Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija. in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications. 2018;:248-252.
doi:10.15308/Sinteza-2018-248-252 .

Jovičić, Radomir, Popović, Olivera, Prokić-Cvetković, Radica, Cvetković, Dragan, Milošević, Nenad, "Upravljanje kvalitetom zavarenih konstrukcija pomoću informacionih tehnologija" in Sinteza 2018 - International Scientific Conference on Information Technology and Data Related Research :  Engineering and Telecommunications (2018):248-252,
https://doi.org/10.15308/Sinteza-2018-248-252 . .