Dikić, Stefan

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9d30992e-0f45-43cc-a062-658867651e70
  • Dikić, Stefan (9)
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Author's Bibliography

Failure analysis of welded joint with multiple defects by extended Finite Element Method and Engineering Critical Analysis

Aranđelović, Mihajlo; Đorđević, Branislav R.; Sedmak, Simon; Radu, Dorin; Petrović, Ana; Dikić, Stefan; Sedmak, Aleksandar

(Elsevier, 2024)

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

Metallographic characterization of the heat affected zone in welded joints with multiple defects

Dikić, Stefan; Aranđelović, Mihajlo; Sedmak, Simon; Petrović, Ana; Đorđević, Branislav

(Elsevier B.V., 2023)

TY  - CONF
AU  - Dikić, Stefan
AU  - Aranđelović, Mihajlo
AU  - Sedmak, Simon
AU  - Petrović, Ana
AU  - Đorđević, Branislav
PY  - 2023
UR  - https://www.sciencedirect.com/journal/procedia-structural-integrity/vol/48/suppl/C
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7103
AB  - This paper is based on extensive research about the influence of multiple different welded joint defects on the integrity of welded structures. In this particular case, the focus was on the heat affected zone and its different sub regions - up to this point, it was observed as a whole, with homogeneous mechanical properties along its cross-section. Due to the need to describe its behaviour in more detail, it was concluded that metallographic characterisation of the heat affected zone is necessary. Metallographic tests have provided a detailed insight into the micro-structures with the heat affected zone, which would be difficult to predict in this case, due to specific conditions, i.e., a welding technology which was adopted with the purpose of deliberately causing a number of defects in the welded joint. This would result in a more realistic distribution of mechanical properties along the heat affected zone, which in turn would provide more accurate input data for numerical simulations, since the use of finite element method will be the next step in this research.
PB  - Elsevier B.V.
C3  - Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)
T1  - Metallographic characterization of the heat affected zone in welded joints with multiple defects
EP  - 265
SP  - 260
VL  - 48
DO  - 10.1016/j.prostr.2023.07.134
ER  - 
@conference{
author = "Dikić, Stefan and Aranđelović, Mihajlo and Sedmak, Simon and Petrović, Ana and Đorđević, Branislav",
year = "2023",
abstract = "This paper is based on extensive research about the influence of multiple different welded joint defects on the integrity of welded structures. In this particular case, the focus was on the heat affected zone and its different sub regions - up to this point, it was observed as a whole, with homogeneous mechanical properties along its cross-section. Due to the need to describe its behaviour in more detail, it was concluded that metallographic characterisation of the heat affected zone is necessary. Metallographic tests have provided a detailed insight into the micro-structures with the heat affected zone, which would be difficult to predict in this case, due to specific conditions, i.e., a welding technology which was adopted with the purpose of deliberately causing a number of defects in the welded joint. This would result in a more realistic distribution of mechanical properties along the heat affected zone, which in turn would provide more accurate input data for numerical simulations, since the use of finite element method will be the next step in this research.",
publisher = "Elsevier B.V.",
journal = "Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)",
title = "Metallographic characterization of the heat affected zone in welded joints with multiple defects",
pages = "265-260",
volume = "48",
doi = "10.1016/j.prostr.2023.07.134"
}
Dikić, S., Aranđelović, M., Sedmak, S., Petrović, A.,& Đorđević, B.. (2023). Metallographic characterization of the heat affected zone in welded joints with multiple defects. in Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023)
Elsevier B.V.., 48, 260-265.
https://doi.org/10.1016/j.prostr.2023.07.134
Dikić S, Aranđelović M, Sedmak S, Petrović A, Đorđević B. Metallographic characterization of the heat affected zone in welded joints with multiple defects. in Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023). 2023;48:260-265.
doi:10.1016/j.prostr.2023.07.134 .
Dikić, Stefan, Aranđelović, Mihajlo, Sedmak, Simon, Petrović, Ana, Đorđević, Branislav, "Metallographic characterization of the heat affected zone in welded joints with multiple defects" in Second International Symposium on Risk Analysis and Safety of Complex Structures and Components (IRAS 2023), 48 (2023):260-265,
https://doi.org/10.1016/j.prostr.2023.07.134 . .
1

Effects of Multiple Defects on Welded Joint Behaviour under the Uniaxial Tensile Loading: Fem and Experimental Approach

Aranđelović, Mihajlo; Petrović, Ana; Đorđević, Branislav; Sedmak, Simon; Sedmak, Aleksandar; Dikić, Stefan; Radu, Dorin

(MDPI, 2023)

TY  - JOUR
AU  - Aranđelović, Mihajlo
AU  - Petrović, Ana
AU  - Đorđević, Branislav
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Dikić, Stefan
AU  - Radu, Dorin
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6010
AB  - The research represents the ongoing investigation of the welded joints behavior made
of low-carbon low-alloyed steel in the presence of different multiple defects. Following the initial
experimental and numerical analyses performed on low-grade steel, a set of experiments were
performed with specimens made of steel EN 1.0044 (commercial designation S275JR), along with
development of new numerical models. Four combinations were made, including defects like
undercuts, excess weld metal, misalignment, weld face sagging and incomplete root penetration,
considering that these defects are often encountered in practice, and can appear simultaneously. The finite element method (FEM) was used to simulate the experiments. Tensile properties of the HAZ and weld metal were calculated using strain measurements by the digital image correlation (DIC) method. The finite element method (FEM) results were in good agreement with the experimental ones.
PB  - MDPI
T2  - Sustainability
T1  - Effects of Multiple Defects on Welded Joint Behaviour under the Uniaxial Tensile Loading: Fem and Experimental Approach
IS  - 1
VL  - 15
DO  - doi.org/10.3390/su15010761
ER  - 
@article{
author = "Aranđelović, Mihajlo and Petrović, Ana and Đorđević, Branislav and Sedmak, Simon and Sedmak, Aleksandar and Dikić, Stefan and Radu, Dorin",
year = "2023",
abstract = "The research represents the ongoing investigation of the welded joints behavior made
of low-carbon low-alloyed steel in the presence of different multiple defects. Following the initial
experimental and numerical analyses performed on low-grade steel, a set of experiments were
performed with specimens made of steel EN 1.0044 (commercial designation S275JR), along with
development of new numerical models. Four combinations were made, including defects like
undercuts, excess weld metal, misalignment, weld face sagging and incomplete root penetration,
considering that these defects are often encountered in practice, and can appear simultaneously. The finite element method (FEM) was used to simulate the experiments. Tensile properties of the HAZ and weld metal were calculated using strain measurements by the digital image correlation (DIC) method. The finite element method (FEM) results were in good agreement with the experimental ones.",
publisher = "MDPI",
journal = "Sustainability",
title = "Effects of Multiple Defects on Welded Joint Behaviour under the Uniaxial Tensile Loading: Fem and Experimental Approach",
number = "1",
volume = "15",
doi = "doi.org/10.3390/su15010761"
}
Aranđelović, M., Petrović, A., Đorđević, B., Sedmak, S., Sedmak, A., Dikić, S.,& Radu, D.. (2023). Effects of Multiple Defects on Welded Joint Behaviour under the Uniaxial Tensile Loading: Fem and Experimental Approach. in Sustainability
MDPI., 15(1).
https://doi.org/doi.org/10.3390/su15010761
Aranđelović M, Petrović A, Đorđević B, Sedmak S, Sedmak A, Dikić S, Radu D. Effects of Multiple Defects on Welded Joint Behaviour under the Uniaxial Tensile Loading: Fem and Experimental Approach. in Sustainability. 2023;15(1).
doi:doi.org/10.3390/su15010761 .
Aranđelović, Mihajlo, Petrović, Ana, Đorđević, Branislav, Sedmak, Simon, Sedmak, Aleksandar, Dikić, Stefan, Radu, Dorin, "Effects of Multiple Defects on Welded Joint Behaviour under the Uniaxial Tensile Loading: Fem and Experimental Approach" in Sustainability, 15, no. 1 (2023),
https://doi.org/doi.org/10.3390/su15010761 . .

Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material

Elayeb, Abdelnaser A.; Janković, Milan; Dikić, Stefan; Bekrić, Dragoljub; Balać, Igor

(Belgrade : Association for ETRAN Society, 2023)

TY  - JOUR
AU  - Elayeb, Abdelnaser A.
AU  - Janković, Milan
AU  - Dikić, Stefan
AU  - Bekrić, Dragoljub
AU  - Balać, Igor
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6805
AB  - Tensile properties of thin plate specimens made from short carbon fiber
reinforced PET-G material are experimentally evaluated for various raster angles
(printing directions). In additive manufacturing (AM), raster angle is recognized as one 
of the key printing parameters which strongly influences the strength and stiffness of the
final part. The relatively high average value of ultimate tensile strength was obtained 
for specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 52.2 MPa and 25.4 MPa, respectively. 
Similarly, noticeably higher average value of modulus of elasticity was obtained for 
specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 4752 MPa and 1569 MPa, respectively. 
Scanning electron microscopy (SEM) was used for analysis of specimens’ fracture 
surfaces. SEM images revealed considerable volume fraction of voids (porosity). Тhe 
porosity, together with weak bonding between two adjacent rasters, could be one of key 
factors for poor tensile properties of samples printed with rasters perpendicular to 
direction of load application (90° raster angle)
PB  - Belgrade : Association for ETRAN Society
T2  - Science of Sintering
T1  - Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material
DO  - 10.2298/SOS220916010E
ER  - 
@article{
author = "Elayeb, Abdelnaser A. and Janković, Milan and Dikić, Stefan and Bekrić, Dragoljub and Balać, Igor",
year = "2023",
abstract = "Tensile properties of thin plate specimens made from short carbon fiber
reinforced PET-G material are experimentally evaluated for various raster angles
(printing directions). In additive manufacturing (AM), raster angle is recognized as one 
of the key printing parameters which strongly influences the strength and stiffness of the
final part. The relatively high average value of ultimate tensile strength was obtained 
for specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 52.2 MPa and 25.4 MPa, respectively. 
Similarly, noticeably higher average value of modulus of elasticity was obtained for 
specimens printed with the 0° raster angle, compared to the value obtained for 
specimens printed with the 90° raster angle - 4752 MPa and 1569 MPa, respectively. 
Scanning electron microscopy (SEM) was used for analysis of specimens’ fracture 
surfaces. SEM images revealed considerable volume fraction of voids (porosity). Тhe 
porosity, together with weak bonding between two adjacent rasters, could be one of key 
factors for poor tensile properties of samples printed with rasters perpendicular to 
direction of load application (90° raster angle)",
publisher = "Belgrade : Association for ETRAN Society",
journal = "Science of Sintering",
title = "Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material",
doi = "10.2298/SOS220916010E"
}
Elayeb, A. A., Janković, M., Dikić, S., Bekrić, D.,& Balać, I.. (2023). Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material. in Science of Sintering
Belgrade : Association for ETRAN Society..
https://doi.org/10.2298/SOS220916010E
Elayeb AA, Janković M, Dikić S, Bekrić D, Balać I. Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material. in Science of Sintering. 2023;.
doi:10.2298/SOS220916010E .
Elayeb, Abdelnaser A., Janković, Milan, Dikić, Stefan, Bekrić, Dragoljub, Balać, Igor, "Influence of Raster Angle on Tensile Properties of FDM Additively Manufactured Plates made from Carbon Reinforced PET-G Material" in Science of Sintering (2023),
https://doi.org/10.2298/SOS220916010E . .

EXPERIMENTAL AND NUMERICAL APPROACH TO NATURAL FREQUENCY OF TAPERED 3D PRINTED CANTILEVER BEAM A TIP BODY

Veg, Marko; Tomović, Aleksandar; Šiniković, Goran; Dikić, Stefan; Zorić, Nemanja; Šalinić, Slaviša; Obradović, Aleksandar; Mitrović, Zoran

(2023)

TY  - CONF
AU  - Veg, Marko
AU  - Tomović, Aleksandar
AU  - Šiniković, Goran
AU  - Dikić, Stefan
AU  - Zorić, Nemanja
AU  - Šalinić, Slaviša
AU  - Obradović, Aleksandar
AU  - Mitrović, Zoran
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6909
AB  - This paper presents the continuation of the research by the authors on the topics of vibration analysis. Namely, a tapered cantilever beam has been studied in theoretical and experimental terms. The beam is 3D printed using the FDM technique of PLA material with two characteristics patterns, linear layered and the two-dimensional periodic structure. The former of the two is conducted to tensile test in order to determine elasticity modulus, so the computations of natural frequencies could be conducted. The experimental part of the research, in terms of natural frequency, is conducted on six specimens with various eccentricities. The angular frequencies of one representative sample, obtained by analytical computations and experimental measurement are compared.
C3  - 9th International Congress of the Serbian Society of Mechanics July 5-7, 2023, Vrnjačka Banja, Serbia
T1  - EXPERIMENTAL AND NUMERICAL APPROACH TO NATURAL FREQUENCY OF TAPERED 3D PRINTED CANTILEVER BEAM A TIP BODY
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6909
ER  - 
@conference{
author = "Veg, Marko and Tomović, Aleksandar and Šiniković, Goran and Dikić, Stefan and Zorić, Nemanja and Šalinić, Slaviša and Obradović, Aleksandar and Mitrović, Zoran",
year = "2023",
abstract = "This paper presents the continuation of the research by the authors on the topics of vibration analysis. Namely, a tapered cantilever beam has been studied in theoretical and experimental terms. The beam is 3D printed using the FDM technique of PLA material with two characteristics patterns, linear layered and the two-dimensional periodic structure. The former of the two is conducted to tensile test in order to determine elasticity modulus, so the computations of natural frequencies could be conducted. The experimental part of the research, in terms of natural frequency, is conducted on six specimens with various eccentricities. The angular frequencies of one representative sample, obtained by analytical computations and experimental measurement are compared.",
journal = "9th International Congress of the Serbian Society of Mechanics July 5-7, 2023, Vrnjačka Banja, Serbia",
title = "EXPERIMENTAL AND NUMERICAL APPROACH TO NATURAL FREQUENCY OF TAPERED 3D PRINTED CANTILEVER BEAM A TIP BODY",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6909"
}
Veg, M., Tomović, A., Šiniković, G., Dikić, S., Zorić, N., Šalinić, S., Obradović, A.,& Mitrović, Z.. (2023). EXPERIMENTAL AND NUMERICAL APPROACH TO NATURAL FREQUENCY OF TAPERED 3D PRINTED CANTILEVER BEAM A TIP BODY. in 9th International Congress of the Serbian Society of Mechanics July 5-7, 2023, Vrnjačka Banja, Serbia.
https://hdl.handle.net/21.15107/rcub_machinery_6909
Veg M, Tomović A, Šiniković G, Dikić S, Zorić N, Šalinić S, Obradović A, Mitrović Z. EXPERIMENTAL AND NUMERICAL APPROACH TO NATURAL FREQUENCY OF TAPERED 3D PRINTED CANTILEVER BEAM A TIP BODY. in 9th International Congress of the Serbian Society of Mechanics July 5-7, 2023, Vrnjačka Banja, Serbia. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_6909 .
Veg, Marko, Tomović, Aleksandar, Šiniković, Goran, Dikić, Stefan, Zorić, Nemanja, Šalinić, Slaviša, Obradović, Aleksandar, Mitrović, Zoran, "EXPERIMENTAL AND NUMERICAL APPROACH TO NATURAL FREQUENCY OF TAPERED 3D PRINTED CANTILEVER BEAM A TIP BODY" in 9th International Congress of the Serbian Society of Mechanics July 5-7, 2023, Vrnjačka Banja, Serbia (2023),
https://hdl.handle.net/21.15107/rcub_machinery_6909 .

Experimental evaluation of mechanical anisotropic material behaviour of carbon reinforced PET-G material

Janković, Milan; Petrović, Ana; Lojpur, Vesna; Dikić, Stefan; Miloš, Marko; Balać, Igor

(Belgrade : Materials Research Society of Serbia, 2022)

TY  - CONF
AU  - Janković, Milan
AU  - Petrović, Ana
AU  - Lojpur, Vesna
AU  - Dikić, Stefan
AU  - Miloš, Marko
AU  - Balać, Igor
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7317
PB  - Belgrade : Materials Research Society of Serbia
C3  - TWENTY-THIRD ANNUALCONFERENCE YUCOMAT 2022 & TWELFTH WORLD ROUND TABLE CONFERENCE ON SINTERING XII WRTCS, Program and the Book of Abstracts, Herceg Novi, Montenegro August 29 - September 2, 2
T1  - Experimental evaluation of mechanical anisotropic material behaviour of carbon reinforced PET-G material
EP  - 81
SP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7317
ER  - 
@conference{
author = "Janković, Milan and Petrović, Ana and Lojpur, Vesna and Dikić, Stefan and Miloš, Marko and Balać, Igor",
year = "2022",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "TWENTY-THIRD ANNUALCONFERENCE YUCOMAT 2022 & TWELFTH WORLD ROUND TABLE CONFERENCE ON SINTERING XII WRTCS, Program and the Book of Abstracts, Herceg Novi, Montenegro August 29 - September 2, 2",
title = "Experimental evaluation of mechanical anisotropic material behaviour of carbon reinforced PET-G material",
pages = "81-81",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7317"
}
Janković, M., Petrović, A., Lojpur, V., Dikić, S., Miloš, M.,& Balać, I.. (2022). Experimental evaluation of mechanical anisotropic material behaviour of carbon reinforced PET-G material. in TWENTY-THIRD ANNUALCONFERENCE YUCOMAT 2022 & TWELFTH WORLD ROUND TABLE CONFERENCE ON SINTERING XII WRTCS, Program and the Book of Abstracts, Herceg Novi, Montenegro August 29 - September 2, 2
Belgrade : Materials Research Society of Serbia., 81-81.
https://hdl.handle.net/21.15107/rcub_machinery_7317
Janković M, Petrović A, Lojpur V, Dikić S, Miloš M, Balać I. Experimental evaluation of mechanical anisotropic material behaviour of carbon reinforced PET-G material. in TWENTY-THIRD ANNUALCONFERENCE YUCOMAT 2022 & TWELFTH WORLD ROUND TABLE CONFERENCE ON SINTERING XII WRTCS, Program and the Book of Abstracts, Herceg Novi, Montenegro August 29 - September 2, 2. 2022;:81-81.
https://hdl.handle.net/21.15107/rcub_machinery_7317 .
Janković, Milan, Petrović, Ana, Lojpur, Vesna, Dikić, Stefan, Miloš, Marko, Balać, Igor, "Experimental evaluation of mechanical anisotropic material behaviour of carbon reinforced PET-G material" in TWENTY-THIRD ANNUALCONFERENCE YUCOMAT 2022 & TWELFTH WORLD ROUND TABLE CONFERENCE ON SINTERING XII WRTCS, Program and the Book of Abstracts, Herceg Novi, Montenegro August 29 - September 2, 2 (2022):81-81,
https://hdl.handle.net/21.15107/rcub_machinery_7317 .

Optimisation of numerical models of welded joints with multiple defect combinations

Aranđelović, Mihajlo; Sedmak, Simon; Jovičić, Radomir; Petrović, Ana; Dikić, Stefan

(2022)

TY  - CONF
AU  - Aranđelović, Mihajlo
AU  - Sedmak, Simon
AU  - Jovičić, Radomir
AU  - Petrović, Ana
AU  - Dikić, Stefan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6017
C3  - ECF23, European Conference on Fracture 2022, Procedia Structural Integrity
T1  - Optimisation of numerical models of welded joints with multiple defect combinations
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6017
ER  - 
@conference{
author = "Aranđelović, Mihajlo and Sedmak, Simon and Jovičić, Radomir and Petrović, Ana and Dikić, Stefan",
year = "2022",
journal = "ECF23, European Conference on Fracture 2022, Procedia Structural Integrity",
title = "Optimisation of numerical models of welded joints with multiple defect combinations",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6017"
}
Aranđelović, M., Sedmak, S., Jovičić, R., Petrović, A.,& Dikić, S.. (2022). Optimisation of numerical models of welded joints with multiple defect combinations. in ECF23, European Conference on Fracture 2022, Procedia Structural Integrity.
https://hdl.handle.net/21.15107/rcub_machinery_6017
Aranđelović M, Sedmak S, Jovičić R, Petrović A, Dikić S. Optimisation of numerical models of welded joints with multiple defect combinations. in ECF23, European Conference on Fracture 2022, Procedia Structural Integrity. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_6017 .
Aranđelović, Mihajlo, Sedmak, Simon, Jovičić, Radomir, Petrović, Ana, Dikić, Stefan, "Optimisation of numerical models of welded joints with multiple defect combinations" in ECF23, European Conference on Fracture 2022, Procedia Structural Integrity (2022),
https://hdl.handle.net/21.15107/rcub_machinery_6017 .

Effects of Multiple Defects on Welded Joint Behaviour Under the Uniaxial Tensile Loadring: Numerical and Experimental Approach

Aranđelović, Mihajlo; Petrović, Ana; Đorđević, Branislav; Sedmak, Simon; Sedmak, Aleksandar; Dikić, Stefan; Jovičić, Radomir

(2022)

TY  - CONF
AU  - Aranđelović, Mihajlo
AU  - Petrović, Ana
AU  - Đorđević, Branislav
AU  - Sedmak, Simon
AU  - Sedmak, Aleksandar
AU  - Dikić, Stefan
AU  - Jovičić, Radomir
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6029
C3  - CIBv 2022 International Scientific Conference on Civil Engineering and Building Services
T1  - Effects of Multiple Defects on Welded Joint Behaviour Under the Uniaxial Tensile Loadring: Numerical and Experimental Approach
SP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6029
ER  - 
@conference{
author = "Aranđelović, Mihajlo and Petrović, Ana and Đorđević, Branislav and Sedmak, Simon and Sedmak, Aleksandar and Dikić, Stefan and Jovičić, Radomir",
year = "2022",
journal = "CIBv 2022 International Scientific Conference on Civil Engineering and Building Services",
title = "Effects of Multiple Defects on Welded Joint Behaviour Under the Uniaxial Tensile Loadring: Numerical and Experimental Approach",
pages = "98",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6029"
}
Aranđelović, M., Petrović, A., Đorđević, B., Sedmak, S., Sedmak, A., Dikić, S.,& Jovičić, R.. (2022). Effects of Multiple Defects on Welded Joint Behaviour Under the Uniaxial Tensile Loadring: Numerical and Experimental Approach. in CIBv 2022 International Scientific Conference on Civil Engineering and Building Services, 98.
https://hdl.handle.net/21.15107/rcub_machinery_6029
Aranđelović M, Petrović A, Đorđević B, Sedmak S, Sedmak A, Dikić S, Jovičić R. Effects of Multiple Defects on Welded Joint Behaviour Under the Uniaxial Tensile Loadring: Numerical and Experimental Approach. in CIBv 2022 International Scientific Conference on Civil Engineering and Building Services. 2022;:98.
https://hdl.handle.net/21.15107/rcub_machinery_6029 .
Aranđelović, Mihajlo, Petrović, Ana, Đorđević, Branislav, Sedmak, Simon, Sedmak, Aleksandar, Dikić, Stefan, Jovičić, Radomir, "Effects of Multiple Defects on Welded Joint Behaviour Under the Uniaxial Tensile Loadring: Numerical and Experimental Approach" in CIBv 2022 International Scientific Conference on Civil Engineering and Building Services (2022):98,
https://hdl.handle.net/21.15107/rcub_machinery_6029 .

Analysis of wheel contact surface damage and brake blocks brеaking

Milković, Dragan; Glišić, Dragomir; Radulović, Saša; Kostić, Aleksandra; Dikić, Stefan

(Belgrade : Innovation Center of Faculty of Mechanical Engineering, 2022)

TY  - CONF
AU  - Milković, Dragan
AU  - Glišić, Dragomir
AU  - Radulović, Saša
AU  - Kostić, Aleksandra
AU  - Dikić, Stefan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4206
AB  - The paper presents an analysis of possible causes of damage to the tread of wheels and cracking of brake blocks of heavy-duty motor tower car VMT 980 C-GR. In order to determine the possible causes, a series of tests were done to check all the influences that led to the occurrence of these damages. The  analysis included checking the regularity of the brake operation, non-destructive testing of the tread damage, and visual inspection of the brake blocks. The correctness of the brake operation was checked by stationary brake tests.
The examination of the damage to the tread of the wheels was performed by non-destructive methods, using means for detecting microcracks and measuring the hardness. The results of the conducted tests indicate that the characteristics of the brake system are within the designed limits and are not the cause of damage to the wheels and the brake blocks. The measured values of hardness on the side and on the tread are higher than the minimum required for test samples according to EN 12362. The wheels are made of ER7 steel, which is used as a standard for railway wheels, with a chemical composition within the prescribed limits. Further analysis showed that significant surface damage to the brake blocks is a consequence of previous damage to the tread surface of the wheels. Visual inspection of the wheels showed flaking and cracking, indicating contact
fatigue and the presence of thermal stresses as the most likely causes of brake blocks and wheel damage.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - The book of Abstract : International Conference of Experimental and Numerical Investigations and New Technologies CNNTECH 2022
T1  - Analysis of wheel contact surface damage and brake blocks brеaking
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4206
ER  - 
@conference{
author = "Milković, Dragan and Glišić, Dragomir and Radulović, Saša and Kostić, Aleksandra and Dikić, Stefan",
year = "2022",
abstract = "The paper presents an analysis of possible causes of damage to the tread of wheels and cracking of brake blocks of heavy-duty motor tower car VMT 980 C-GR. In order to determine the possible causes, a series of tests were done to check all the influences that led to the occurrence of these damages. The  analysis included checking the regularity of the brake operation, non-destructive testing of the tread damage, and visual inspection of the brake blocks. The correctness of the brake operation was checked by stationary brake tests.
The examination of the damage to the tread of the wheels was performed by non-destructive methods, using means for detecting microcracks and measuring the hardness. The results of the conducted tests indicate that the characteristics of the brake system are within the designed limits and are not the cause of damage to the wheels and the brake blocks. The measured values of hardness on the side and on the tread are higher than the minimum required for test samples according to EN 12362. The wheels are made of ER7 steel, which is used as a standard for railway wheels, with a chemical composition within the prescribed limits. Further analysis showed that significant surface damage to the brake blocks is a consequence of previous damage to the tread surface of the wheels. Visual inspection of the wheels showed flaking and cracking, indicating contact
fatigue and the presence of thermal stresses as the most likely causes of brake blocks and wheel damage.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "The book of Abstract : International Conference of Experimental and Numerical Investigations and New Technologies CNNTECH 2022",
title = "Analysis of wheel contact surface damage and brake blocks brеaking",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4206"
}
Milković, D., Glišić, D., Radulović, S., Kostić, A.,& Dikić, S.. (2022). Analysis of wheel contact surface damage and brake blocks brеaking. in The book of Abstract : International Conference of Experimental and Numerical Investigations and New Technologies CNNTECH 2022
Belgrade : Innovation Center of Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_4206
Milković D, Glišić D, Radulović S, Kostić A, Dikić S. Analysis of wheel contact surface damage and brake blocks brеaking. in The book of Abstract : International Conference of Experimental and Numerical Investigations and New Technologies CNNTECH 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_4206 .
Milković, Dragan, Glišić, Dragomir, Radulović, Saša, Kostić, Aleksandra, Dikić, Stefan, "Analysis of wheel contact surface damage and brake blocks brеaking" in The book of Abstract : International Conference of Experimental and Numerical Investigations and New Technologies CNNTECH 2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_4206 .