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

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

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

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

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

TY  - JOUR
AU  - Momčilović, Dejan B.
AU  - Odanović, Zoran
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7514
AB  - Turbine and generator rotors and shafts undergo high stresses during regular working lifeand, from a safety and operational aspect, are the most significant components of a powergeneration system. Depending on the appropriate operating conditions, like temperature and/orcorrosion the, shafts can be fabricated out of low/high alloy heat resistance material or of lowalloyed, highly toughened material for different application. Despite known good practice anddeveloped operation procedures, the failures of shafts sometimes occur. The right and well-definedfailure analysis is the basis for feasibility analysis of repair method in the power generating industry.The analysis of direct and indirect costs of repair after the failure analysis as well as the analysis ofthe repair and post-repair conditions of the repaired element is the vital for decision on the keyquestion. Is it possible to repair this element and what is the optimal repair strategy?This paper compares and analyses two approaches, by weldability analysis and weld cyclesimulation, in order to determine welding feasibility analysis of cracked hydro turbine shafts.
T2  - Advanced Materials Research
T1  - Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation
EP  - 45
SP  - 36
VL  - 1153
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7514
ER  - 

@article{
author = "Momčilović, Dejan B. and Odanović, Zoran",
year = "2019",
abstract = "Turbine and generator rotors and shafts undergo high stresses during regular working lifeand, from a safety and operational aspect, are the most significant components of a powergeneration system. Depending on the appropriate operating conditions, like temperature and/orcorrosion the, shafts can be fabricated out of low/high alloy heat resistance material or of lowalloyed, highly toughened material for different application. Despite known good practice anddeveloped operation procedures, the failures of shafts sometimes occur. The right and well-definedfailure analysis is the basis for feasibility analysis of repair method in the power generating industry.The analysis of direct and indirect costs of repair after the failure analysis as well as the analysis ofthe repair and post-repair conditions of the repaired element is the vital for decision on the keyquestion. Is it possible to repair this element and what is the optimal repair strategy?This paper compares and analyses two approaches, by weldability analysis and weld cyclesimulation, in order to determine welding feasibility analysis of cracked hydro turbine shafts.",
journal = "Advanced Materials Research",
title = "Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation",
pages = "45-36",
volume = "1153",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7514"
}

Momčilović, D. B.,& Odanović, Z.. (2019). Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation. in Advanced Materials Research, 1153, 36-45.
https://hdl.handle.net/21.15107/rcub_machinery_7514

Momčilović DB, Odanović Z. Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation. in Advanced Materials Research. 2019;1153:36-45.
https://hdl.handle.net/21.15107/rcub_machinery_7514 .

Momčilović, Dejan B., Odanović, Zoran, "Feasibility Analysis for Repair of Large Diameter Hydro Turbine Shaft Based on Weldability Test and Welding Cycle Simulation" in Advanced Materials Research, 1153 (2019):36-45,
https://hdl.handle.net/21.15107/rcub_machinery_7514 .

TY  - PAT
AU  - Atanasovska, Ivana
AU  - Momčilović, Dejan B.
AU  - Odanović, Zoran
AU  - Aleksić, Vujadin
AU  - Gavrilovski, Milorad
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7546
T1  - Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7546
ER  - 

@misc{
author = "Atanasovska, Ivana and Momčilović, Dejan B. and Odanović, Zoran and Aleksić, Vujadin and Gavrilovski, Milorad",
year = "2018",
title = "Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7546"
}

Atanasovska, I., Momčilović, D. B., Odanović, Z., Aleksić, V.,& Gavrilovski, M.. (2018). Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo. .
https://hdl.handle.net/21.15107/rcub_machinery_7546

Atanasovska I, Momčilović DB, Odanović Z, Aleksić V, Gavrilovski M. Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_7546 .

Atanasovska, Ivana, Momčilović, Dejan B., Odanović, Zoran, Aleksić, Vujadin, Gavrilovski, Milorad, "Univerzalni alat za ispitivanje zateznih karakteristika šestougaonih čeličnih mreža za građevinarstvo" (2018),
https://hdl.handle.net/21.15107/rcub_machinery_7546 .

TY  - CONF
AU  - Momčilović, Dejan B.
AU  - Atanasovska, Ivana
AU  - Milović, Ljubica
AU  - Odanović, Zoran
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7527
AB  - The fracture surface appearances are slowly changed through decade’s side by advantages in technology of steel production.Basic requirements for cleaner steels and lower energy consumption during production induce that newer steels have somedifferent fracture features compared to the old ones. This paper describes morphology of different corrosion fatigue andstress corrosion cracks. The brief failure analysis with key results will be presented for each case mentioned in paper, andemphasize will be on morphology and characteristic features of fracture surfaces. Macro appearance of fatigue cracks will bediscussed in detail and characteristic features of stress corrosion fractures will be analyzed. Also, the results from scanningelectron microscopy will be presented in this paper.
PB  - Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)
C3  - Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia
T1  - Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels
SP  - 129
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7527
ER  - 

@conference{
author = "Momčilović, Dejan B. and Atanasovska, Ivana and Milović, Ljubica and Odanović, Zoran",
year = "2018",
abstract = "The fracture surface appearances are slowly changed through decade’s side by advantages in technology of steel production.Basic requirements for cleaner steels and lower energy consumption during production induce that newer steels have somedifferent fracture features compared to the old ones. This paper describes morphology of different corrosion fatigue andstress corrosion cracks. The brief failure analysis with key results will be presented for each case mentioned in paper, andemphasize will be on morphology and characteristic features of fracture surfaces. Macro appearance of fatigue cracks will bediscussed in detail and characteristic features of stress corrosion fractures will be analyzed. Also, the results from scanningelectron microscopy will be presented in this paper.",
publisher = "Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)",
journal = "Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia",
title = "Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels",
pages = "129",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7527"
}

Momčilović, D. B., Atanasovska, I., Milović, L.,& Odanović, Z.. (2018). Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia
Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)., 129.
https://hdl.handle.net/21.15107/rcub_machinery_7527

Momčilović DB, Atanasovska I, Milović L, Odanović Z. Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia. 2018;:129.
https://hdl.handle.net/21.15107/rcub_machinery_7527 .

Momčilović, Dejan B., Atanasovska, Ivana, Milović, Ljubica, Odanović, Zoran, "Morphology of corrosion fatigue and stress corrosion cracks on low alloy steels" in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, Serbia (2018):129,
https://hdl.handle.net/21.15107/rcub_machinery_7527 .

TY  - CONF
AU  - Momčilović, Dejan B.
AU  - Milović, Ljubica
AU  - Atanasovska, Ivana
AU  - Odanović, Zoran
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7516
AB  - Commercial gas cylinders are common type of pressure vessels in many health care and technical facilities. Unexpectedfailures of gas cylinders occur despite of fact that the design, manufacture route, quality control, transportation, and handlingare specified by various standards and regulations, particularly in domain of periodic inspection. A case study of the suddenfailure of the 25 years old gas cylinder made of low-alloy steel is presented in this paper. Exploded cylinder was filled withcommercial mixture of nitrogen and CO/CO2. Results of chemical analysis, mechanical testing and microstructure andfracture surface examination of gas cylinder material are given in this paper. Key results from failure analysis revealed microcorrosion pitting as a consequence of undesired traces of moisture. This slow crack initiation combined with gas mixturefilling and exhausting cycles, promoted the local damage which could explain the mechanism of failure. In addition, theanalysis of gas cylinder material in moment of failure is evaluated by using the critical distance parameter
PB  - Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)
C3  - Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia
T1  - Gas cylinder rupture induced by local corrosion damage
SP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7516
ER  - 

@conference{
author = "Momčilović, Dejan B. and Milović, Ljubica and Atanasovska, Ivana and Odanović, Zoran",
year = "2018",
abstract = "Commercial gas cylinders are common type of pressure vessels in many health care and technical facilities. Unexpectedfailures of gas cylinders occur despite of fact that the design, manufacture route, quality control, transportation, and handlingare specified by various standards and regulations, particularly in domain of periodic inspection. A case study of the suddenfailure of the 25 years old gas cylinder made of low-alloy steel is presented in this paper. Exploded cylinder was filled withcommercial mixture of nitrogen and CO/CO2. Results of chemical analysis, mechanical testing and microstructure andfracture surface examination of gas cylinder material are given in this paper. Key results from failure analysis revealed microcorrosion pitting as a consequence of undesired traces of moisture. This slow crack initiation combined with gas mixturefilling and exhausting cycles, promoted the local damage which could explain the mechanism of failure. In addition, theanalysis of gas cylinder material in moment of failure is evaluated by using the critical distance parameter",
publisher = "Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)",
journal = "Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia",
title = "Gas cylinder rupture induced by local corrosion damage",
pages = "128",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7516"
}

Momčilović, D. B., Milović, L., Atanasovska, I.,& Odanović, Z.. (2018). Gas cylinder rupture induced by local corrosion damage. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia
Society for Structural Integrity and Life – Prof. Dr Stojan Sedmak (DIVK)., 128.
https://hdl.handle.net/21.15107/rcub_machinery_7516

Momčilović DB, Milović L, Atanasovska I, Odanović Z. Gas cylinder rupture induced by local corrosion damage. in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia. 2018;:128.
https://hdl.handle.net/21.15107/rcub_machinery_7516 .

Momčilović, Dejan B., Milović, Ljubica, Atanasovska, Ivana, Odanović, Zoran, "Gas cylinder rupture induced by local corrosion damage" in Book of abstracts - 22nd European Conference on Fracture - ECF22: LOADING AND ENVIRONMENT EFFECTS ON STRUCTURAL INTEGRITY, Belgrade, serbia (2018):128,
https://hdl.handle.net/21.15107/rcub_machinery_7516 .

TY  - JOUR
AU  - Odanović, Zoran
AU  - Ristivojević, Mileta
AU  - Milošević-Mitić, Vesna
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3933
AB  - Railway axles are vital parts of railway. Their failure in the form of dynamic fracture is commonly of disastrous outcomes for railway vehicles. Accordingly, railway axles are designed to be highly reliable, while the maintenance system requires regular inspection in terms of crack initiation. However, due to complex exploitation conditions, complex stress state and multiple stress concentration, railway axles often experience fatigue failures. This occurrence has been studied in a large number of papers. This paper too sheds light on the causes of fracture occurrence in the axle of railway freight car for coal transport in a thermal power plant. Detailed analyses were conducted on the axle fracture surface and mechanical properties. Also, microstructure of the axle material, as well as on exploitation conditions and stress state was examined. Calculations indicated that, apart from working load impact, the influence of press fit joints, especially of the one between the labyrinth seal and the axle is of crucial importance for the analysis of railway axle stress state. The entire numerical-experimental analysis has shown that the considered axle failure was caused by inadequate maintenance, insufficient axle strength and adverse stress state in the railway axle critical cross-sections.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Investigation into the causes of fracture in railway freight car axle
EP  - 181
SP  - 169
VL  - 55
DO  - 10.1016/j.engfailanal.2015.05.011
ER  - 

@article{
author = "Odanović, Zoran and Ristivojević, Mileta and Milošević-Mitić, Vesna",
year = "2015",
abstract = "Railway axles are vital parts of railway. Their failure in the form of dynamic fracture is commonly of disastrous outcomes for railway vehicles. Accordingly, railway axles are designed to be highly reliable, while the maintenance system requires regular inspection in terms of crack initiation. However, due to complex exploitation conditions, complex stress state and multiple stress concentration, railway axles often experience fatigue failures. This occurrence has been studied in a large number of papers. This paper too sheds light on the causes of fracture occurrence in the axle of railway freight car for coal transport in a thermal power plant. Detailed analyses were conducted on the axle fracture surface and mechanical properties. Also, microstructure of the axle material, as well as on exploitation conditions and stress state was examined. Calculations indicated that, apart from working load impact, the influence of press fit joints, especially of the one between the labyrinth seal and the axle is of crucial importance for the analysis of railway axle stress state. The entire numerical-experimental analysis has shown that the considered axle failure was caused by inadequate maintenance, insufficient axle strength and adverse stress state in the railway axle critical cross-sections.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Investigation into the causes of fracture in railway freight car axle",
pages = "181-169",
volume = "55",
doi = "10.1016/j.engfailanal.2015.05.011"
}

Odanović, Z., Ristivojević, M.,& Milošević-Mitić, V.. (2015). Investigation into the causes of fracture in railway freight car axle. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 55, 169-181.
https://doi.org/10.1016/j.engfailanal.2015.05.011

Odanović Z, Ristivojević M, Milošević-Mitić V. Investigation into the causes of fracture in railway freight car axle. in Engineering Failure Analysis. 2015;55:169-181.
doi:10.1016/j.engfailanal.2015.05.011 .

Odanović, Zoran, Ristivojević, Mileta, Milošević-Mitić, Vesna, "Investigation into the causes of fracture in railway freight car axle" in Engineering Failure Analysis, 55 (2015):169-181,
https://doi.org/10.1016/j.engfailanal.2015.05.011 . .

TY  - JOUR
AU  - Odanović, Zoran
AU  - Ristivojević, Mileta
AU  - Milošević-Mitić, Vesna
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2251
AB  - Railway axles are vital parts of railway. Their failure in the form of dynamic fracture is commonly of disastrous outcomes for railway vehicles. Accordingly, railway axles are designed to be highly reliable, while the maintenance system requires regular inspection in terms of crack initiation. However, due to complex exploitation conditions, complex stress state and multiple stress concentration, railway axles often experience fatigue failures. This occurrence has been studied in a large number of papers. This paper too sheds light on the causes of fracture occurrence in the axle of railway freight car for coal transport in a thermal power plant. Detailed analyses were conducted on the axle fracture surface and mechanical properties. Also, microstructure of the axle material, as well as on exploitation conditions and stress state was examined. Calculations indicated that, apart from working load impact, the influence of press fit joints, especially of the one between the labyrinth seal and the axle is of crucial importance for the analysis of railway axle stress state. The entire numerical-experimental analysis has shown that the considered axle failure was caused by inadequate maintenance, insufficient axle strength and adverse stress state in the railway axle critical cross-sections.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Investigation into the causes of fracture in railway freight car axle
EP  - 181
SP  - 169
VL  - 55
DO  - 10.1016/j.engfailanal.2015.05.011
ER  - 

@article{
author = "Odanović, Zoran and Ristivojević, Mileta and Milošević-Mitić, Vesna",
year = "2015",
abstract = "Railway axles are vital parts of railway. Their failure in the form of dynamic fracture is commonly of disastrous outcomes for railway vehicles. Accordingly, railway axles are designed to be highly reliable, while the maintenance system requires regular inspection in terms of crack initiation. However, due to complex exploitation conditions, complex stress state and multiple stress concentration, railway axles often experience fatigue failures. This occurrence has been studied in a large number of papers. This paper too sheds light on the causes of fracture occurrence in the axle of railway freight car for coal transport in a thermal power plant. Detailed analyses were conducted on the axle fracture surface and mechanical properties. Also, microstructure of the axle material, as well as on exploitation conditions and stress state was examined. Calculations indicated that, apart from working load impact, the influence of press fit joints, especially of the one between the labyrinth seal and the axle is of crucial importance for the analysis of railway axle stress state. The entire numerical-experimental analysis has shown that the considered axle failure was caused by inadequate maintenance, insufficient axle strength and adverse stress state in the railway axle critical cross-sections.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Investigation into the causes of fracture in railway freight car axle",
pages = "181-169",
volume = "55",
doi = "10.1016/j.engfailanal.2015.05.011"
}

Odanović, Z., Ristivojević, M.,& Milošević-Mitić, V.. (2015). Investigation into the causes of fracture in railway freight car axle. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 55, 169-181.
https://doi.org/10.1016/j.engfailanal.2015.05.011

Odanović Z, Ristivojević M, Milošević-Mitić V. Investigation into the causes of fracture in railway freight car axle. in Engineering Failure Analysis. 2015;55:169-181.
doi:10.1016/j.engfailanal.2015.05.011 .

Odanović, Zoran, Ristivojević, Mileta, Milošević-Mitić, Vesna, "Investigation into the causes of fracture in railway freight car axle" in Engineering Failure Analysis, 55 (2015):169-181,
https://doi.org/10.1016/j.engfailanal.2015.05.011 . .

TY  - CONF
AU  - Arsić, Miodrag
AU  - Odanović, Zoran
AU  - Bošnjak, Srđan
AU  - Mladenović, Mladen
AU  - Savić, Zoran
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1650
AB  - During the refurbishment of the hydroelectric generating set A6 on HPP "Djerdap 1", for the state analysis and assessment of the level and causes of degradation of the structure of the vertical Kaplan turbine runner guide vane apparatus non-destructive tests and inspections, as well as destructive tests of base material and welded joints, have been carried out after 40 years of service. Results of non-destructive tests performed on welded joints are presented in this paper (magnetic particle and ultrasonic inspection), as well as results of destructive tests of the base material and welded joints (testing of tensile properties, impact testing, metallographic analyses of the structure). A large number of crack type line indications were detected by magnetic particle inspections, while the occurrence of partial penetration in roots of welded joints was detected by ultrasonic inspections, as well as lamellar tearing of the base material. Tensile properties of tested samples taken in longitudinal and transverse direction fulfilled the requirements of the standard with certain deviations, which does not stand for samples taken in z-direction with significantly lower values of contraction of the cross-section than minimum prescribed values, which proves that base material is not resistant to the occurrence of lamellar cracks. Metallographic tests performed on specimens taken from the base material in longitudinal and transverse direction showed that the microstructure is stripe-shaped and ferrite-pearlite with non-metallic inclusions of oxide, sulphide, silicate and aluminate type, while metallographic tests performed on specimens taken from welded joints showed that their microstructure is stripe-shaped and ferrite-pearlite with non-metallic inclusions of oxide type. A large number of micro- and macro-cracks were detected in the microstructure as well. Experimental tests enabled the determination of the causes of occurrence of lamellar tearing in base material and crack type defects in welded joints, while analytical calculation that refers to the stress state enabled integrity of welded structure of the upper ring of the turbine runner guide vane apparatus.
PB  - Trans Tech Publications Ltd, Durnten-Zurich
C3  - Structural Integrity of Welded Structures
T1  - State Analysis and Integrity of Welded Structures of the Upper Ring of the Turbine Runner Guide Vane Apparatus of Hydroelectric Generating Set A6 on Hydro Power Plant Djerdap 1
EP  - +
SP  - 7
VL  - 814
DO  - 10.4028/www.scientific.net/AMR.814.7
ER  - 

@conference{
author = "Arsić, Miodrag and Odanović, Zoran and Bošnjak, Srđan and Mladenović, Mladen and Savić, Zoran",
year = "2013",
abstract = "During the refurbishment of the hydroelectric generating set A6 on HPP "Djerdap 1", for the state analysis and assessment of the level and causes of degradation of the structure of the vertical Kaplan turbine runner guide vane apparatus non-destructive tests and inspections, as well as destructive tests of base material and welded joints, have been carried out after 40 years of service. Results of non-destructive tests performed on welded joints are presented in this paper (magnetic particle and ultrasonic inspection), as well as results of destructive tests of the base material and welded joints (testing of tensile properties, impact testing, metallographic analyses of the structure). A large number of crack type line indications were detected by magnetic particle inspections, while the occurrence of partial penetration in roots of welded joints was detected by ultrasonic inspections, as well as lamellar tearing of the base material. Tensile properties of tested samples taken in longitudinal and transverse direction fulfilled the requirements of the standard with certain deviations, which does not stand for samples taken in z-direction with significantly lower values of contraction of the cross-section than minimum prescribed values, which proves that base material is not resistant to the occurrence of lamellar cracks. Metallographic tests performed on specimens taken from the base material in longitudinal and transverse direction showed that the microstructure is stripe-shaped and ferrite-pearlite with non-metallic inclusions of oxide, sulphide, silicate and aluminate type, while metallographic tests performed on specimens taken from welded joints showed that their microstructure is stripe-shaped and ferrite-pearlite with non-metallic inclusions of oxide type. A large number of micro- and macro-cracks were detected in the microstructure as well. Experimental tests enabled the determination of the causes of occurrence of lamellar tearing in base material and crack type defects in welded joints, while analytical calculation that refers to the stress state enabled integrity of welded structure of the upper ring of the turbine runner guide vane apparatus.",
publisher = "Trans Tech Publications Ltd, Durnten-Zurich",
journal = "Structural Integrity of Welded Structures",
title = "State Analysis and Integrity of Welded Structures of the Upper Ring of the Turbine Runner Guide Vane Apparatus of Hydroelectric Generating Set A6 on Hydro Power Plant Djerdap 1",
pages = "+-7",
volume = "814",
doi = "10.4028/www.scientific.net/AMR.814.7"
}

Arsić, M., Odanović, Z., Bošnjak, S., Mladenović, M.,& Savić, Z.. (2013). State Analysis and Integrity of Welded Structures of the Upper Ring of the Turbine Runner Guide Vane Apparatus of Hydroelectric Generating Set A6 on Hydro Power Plant Djerdap 1. in Structural Integrity of Welded Structures
Trans Tech Publications Ltd, Durnten-Zurich., 814, 7-+.
https://doi.org/10.4028/www.scientific.net/AMR.814.7

Arsić M, Odanović Z, Bošnjak S, Mladenović M, Savić Z. State Analysis and Integrity of Welded Structures of the Upper Ring of the Turbine Runner Guide Vane Apparatus of Hydroelectric Generating Set A6 on Hydro Power Plant Djerdap 1. in Structural Integrity of Welded Structures. 2013;814:7-+.
doi:10.4028/www.scientific.net/AMR.814.7 .

Arsić, Miodrag, Odanović, Zoran, Bošnjak, Srđan, Mladenović, Mladen, Savić, Zoran, "State Analysis and Integrity of Welded Structures of the Upper Ring of the Turbine Runner Guide Vane Apparatus of Hydroelectric Generating Set A6 on Hydro Power Plant Djerdap 1" in Structural Integrity of Welded Structures, 814 (2013):7-+,
https://doi.org/10.4028/www.scientific.net/AMR.814.7 . .

TY  - JOUR
AU  - Momčilović, Dejan B.
AU  - Odanović, Zoran
AU  - Mitrović, Radivoje
AU  - Atanasovska, Ivana
AU  - Vuherer, Tomaž
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1440
AB  - This paper describes the analysis of major failure of 28 MW horizontal hydro turbine shaft. The analysis of load carrying capacity of critical radius and fractography analysis are presented. Special emphasize is on metallurgical failure analysis of in-service crack initiation. The analysis of stresses is obtained by the finite element method and the developed model and load conditions are described. Finite element analysis is performed for case of normal service and start-up regime. Based on the failure analysis and numerical calculations, it could be concluded that the seal box design led to constant flow of river water in zone of critical radius which resulted as occurrence of corrosion fatigue cracks and major failure of turbine shaft. Suggestions for problem solution for the turbine shaft are also presented.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Failure analysis of hydraulic turbine shaft
EP  - 66
SP  - 54
VL  - 20
DO  - 10.1016/j.engfailanal.2011.10.006
ER  - 

@article{
author = "Momčilović, Dejan B. and Odanović, Zoran and Mitrović, Radivoje and Atanasovska, Ivana and Vuherer, Tomaž",
year = "2012",
abstract = "This paper describes the analysis of major failure of 28 MW horizontal hydro turbine shaft. The analysis of load carrying capacity of critical radius and fractography analysis are presented. Special emphasize is on metallurgical failure analysis of in-service crack initiation. The analysis of stresses is obtained by the finite element method and the developed model and load conditions are described. Finite element analysis is performed for case of normal service and start-up regime. Based on the failure analysis and numerical calculations, it could be concluded that the seal box design led to constant flow of river water in zone of critical radius which resulted as occurrence of corrosion fatigue cracks and major failure of turbine shaft. Suggestions for problem solution for the turbine shaft are also presented.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Failure analysis of hydraulic turbine shaft",
pages = "66-54",
volume = "20",
doi = "10.1016/j.engfailanal.2011.10.006"
}

Momčilović, D. B., Odanović, Z., Mitrović, R., Atanasovska, I.,& Vuherer, T.. (2012). Failure analysis of hydraulic turbine shaft. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 20, 54-66.
https://doi.org/10.1016/j.engfailanal.2011.10.006

Momčilović DB, Odanović Z, Mitrović R, Atanasovska I, Vuherer T. Failure analysis of hydraulic turbine shaft. in Engineering Failure Analysis. 2012;20:54-66.
doi:10.1016/j.engfailanal.2011.10.006 .

Momčilović, Dejan B., Odanović, Zoran, Mitrović, Radivoje, Atanasovska, Ivana, Vuherer, Tomaž, "Failure analysis of hydraulic turbine shaft" in Engineering Failure Analysis, 20 (2012):54-66,
https://doi.org/10.1016/j.engfailanal.2011.10.006 . .

TY  - JOUR
AU  - Arsić, Miodrag A.
AU  - Bošnjak, Srđan
AU  - Odanović, Zoran
AU  - Dunjić, Momčilo
AU  - Simonović, Aleksandar
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1434
AB  - The superstructure of the ARs 2000 spreader leans on three crawlers of identical length, width and height. Serious damage to the track wheels threads occurred already during the spreader's travel from the erection site to the open pit mine as well as immediately after the overburden system exploitation started. The goal of the study presented in this paper was to diagnose the cause of the track wheels premature damage. Contact stresses on the track wheel bearing surface are defined by applying Hertz's theory and FEM. In order to clarify the causes of the damages, experimental investigations were performed with the purpose of defining the chemical composition, tensile properties, impact toughness and macro and microhardness of the track wheel material. Metallographic examinations were also conducted. Based on the results of the analytical-numerical-experimental analysis, it can be concluded that track wheels failures are predominantly caused by the 'design-in' and 'manufacturing-in' defects.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Failure Analysis
T1  - Analysis of the spreader track wheels premature damages
EP  - 136
SP  - 118
VL  - 20
DO  - 10.1016/j.engfailanal.2011.11.005
ER  - 

@article{
author = "Arsić, Miodrag A. and Bošnjak, Srđan and Odanović, Zoran and Dunjić, Momčilo and Simonović, Aleksandar",
year = "2012",
abstract = "The superstructure of the ARs 2000 spreader leans on three crawlers of identical length, width and height. Serious damage to the track wheels threads occurred already during the spreader's travel from the erection site to the open pit mine as well as immediately after the overburden system exploitation started. The goal of the study presented in this paper was to diagnose the cause of the track wheels premature damage. Contact stresses on the track wheel bearing surface are defined by applying Hertz's theory and FEM. In order to clarify the causes of the damages, experimental investigations were performed with the purpose of defining the chemical composition, tensile properties, impact toughness and macro and microhardness of the track wheel material. Metallographic examinations were also conducted. Based on the results of the analytical-numerical-experimental analysis, it can be concluded that track wheels failures are predominantly caused by the 'design-in' and 'manufacturing-in' defects.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Failure Analysis",
title = "Analysis of the spreader track wheels premature damages",
pages = "136-118",
volume = "20",
doi = "10.1016/j.engfailanal.2011.11.005"
}

Arsić, M. A., Bošnjak, S., Odanović, Z., Dunjić, M.,& Simonović, A.. (2012). Analysis of the spreader track wheels premature damages. in Engineering Failure Analysis
Pergamon-Elsevier Science Ltd, Oxford., 20, 118-136.
https://doi.org/10.1016/j.engfailanal.2011.11.005

Arsić MA, Bošnjak S, Odanović Z, Dunjić M, Simonović A. Analysis of the spreader track wheels premature damages. in Engineering Failure Analysis. 2012;20:118-136.
doi:10.1016/j.engfailanal.2011.11.005 .

Arsić, Miodrag A., Bošnjak, Srđan, Odanović, Zoran, Dunjić, Momčilo, Simonović, Aleksandar, "Analysis of the spreader track wheels premature damages" in Engineering Failure Analysis, 20 (2012):118-136,
https://doi.org/10.1016/j.engfailanal.2011.11.005 . .

TY  - CONF
AU  - Bošnjak, Srđan
AU  - Arsić, Miodrag A.
AU  - Zrnić, Nenad
AU  - Odanović, Zoran
AU  - Đorđević, Miloš
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1151
AB  - Stacker ARs 2000 presents the final link in the system for continuous overburden removal in the open pit mine "Kostolac" Serbia. Its superstructure leans on three crawlers of the same length, width and height. During the stacker's travel from the erection site to the open pit mine, three crawler chain links fractured, presenting an indication of the problems that were to occur during exploitation. In fact, after only 1000 working hours (about three months), 30 chain links sustained fractures resulting in direct and indirect costs due to the downtime that substantially diminished the effects of the overburden removal system. The goal of the study presented in the paper was to diagnose the cause of chain link breakdown occurrence. Working stresses in the chain link are defined by applying FEM. Experimental investigations define the chemical composition, the tensile properties, the impact toughness and the macro and microhardness. Metallographic examinations are conducted additionally. Based on the results of the numerical-experimental analysis, it can be concluded that chain link breakdown is predominantly caused by (a) substantial deviation of the mechanical properties of the material with respect to those prescribed by the standard and (b) the existence of macro and microcracks in the material structure.
PB  - Elsevier Science Bv, Amsterdam
C3  - 11th International Conference on The Mechanical Behavior of Materials (Icm11)
T1  - Failure Analysis of the Stacker Crawler Chain Link
VL  - 10
DO  - 10.1016/j.proeng.2011.04.371
ER  - 

@conference{
author = "Bošnjak, Srđan and Arsić, Miodrag A. and Zrnić, Nenad and Odanović, Zoran and Đorđević, Miloš",
year = "2011",
abstract = "Stacker ARs 2000 presents the final link in the system for continuous overburden removal in the open pit mine "Kostolac" Serbia. Its superstructure leans on three crawlers of the same length, width and height. During the stacker's travel from the erection site to the open pit mine, three crawler chain links fractured, presenting an indication of the problems that were to occur during exploitation. In fact, after only 1000 working hours (about three months), 30 chain links sustained fractures resulting in direct and indirect costs due to the downtime that substantially diminished the effects of the overburden removal system. The goal of the study presented in the paper was to diagnose the cause of chain link breakdown occurrence. Working stresses in the chain link are defined by applying FEM. Experimental investigations define the chemical composition, the tensile properties, the impact toughness and the macro and microhardness. Metallographic examinations are conducted additionally. Based on the results of the numerical-experimental analysis, it can be concluded that chain link breakdown is predominantly caused by (a) substantial deviation of the mechanical properties of the material with respect to those prescribed by the standard and (b) the existence of macro and microcracks in the material structure.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "11th International Conference on The Mechanical Behavior of Materials (Icm11)",
title = "Failure Analysis of the Stacker Crawler Chain Link",
volume = "10",
doi = "10.1016/j.proeng.2011.04.371"
}

Bošnjak, S., Arsić, M. A., Zrnić, N., Odanović, Z.,& Đorđević, M.. (2011). Failure Analysis of the Stacker Crawler Chain Link. in 11th International Conference on The Mechanical Behavior of Materials (Icm11)
Elsevier Science Bv, Amsterdam., 10.
https://doi.org/10.1016/j.proeng.2011.04.371

Bošnjak S, Arsić MA, Zrnić N, Odanović Z, Đorđević M. Failure Analysis of the Stacker Crawler Chain Link. in 11th International Conference on The Mechanical Behavior of Materials (Icm11). 2011;10.
doi:10.1016/j.proeng.2011.04.371 .

Bošnjak, Srđan, Arsić, Miodrag A., Zrnić, Nenad, Odanović, Zoran, Đorđević, Miloš, "Failure Analysis of the Stacker Crawler Chain Link" in 11th International Conference on The Mechanical Behavior of Materials (Icm11), 10 (2011),
https://doi.org/10.1016/j.proeng.2011.04.371 . .

TY  - CONF
AU  - Grabulov, Vencislav
AU  - Jovičić, Radomir
AU  - Sedmak, Aleksandar
AU  - Odanović, Zoran
AU  - Petronić, Sanja
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/883
AB  - An analysis of the influence of heterogeneity of the ferriteaustenite welded joint on its integrity has been performed. The Charpy specimens, with notch positioned in different regions of welded joint, have been tested using the instrumented pendulum to separate crack initiation and growth energy. In all cases tested (different heat input, room and low temperature, down to -60°C), weld metal had the lowest toughness, due to the presence of S ferrite, which was not the case in the heat affected zones, having surprisingly high toughness, including both crack initiation and growth energies. Finally, J-R curves have been obtained by using standard fracture mechanics testing procedure and compared with crack driving forces, obtained numerically using King's method, enabling estimation of influence of cracks on integrity of ferriteaustenite welded joints in cylindrical pressure vessel.
C3  - Welding in the World
T1  - An analysis of the influence of weldment heterogeneity in ferrite-austenite welded structure
EP  - 563
IS  - SPECIAL ISSUE
SP  - 559
VL  - 53
UR  - https://hdl.handle.net/21.15107/rcub_machinery_883
ER  - 

@conference{
author = "Grabulov, Vencislav and Jovičić, Radomir and Sedmak, Aleksandar and Odanović, Zoran and Petronić, Sanja",
year = "2009",
abstract = "An analysis of the influence of heterogeneity of the ferriteaustenite welded joint on its integrity has been performed. The Charpy specimens, with notch positioned in different regions of welded joint, have been tested using the instrumented pendulum to separate crack initiation and growth energy. In all cases tested (different heat input, room and low temperature, down to -60°C), weld metal had the lowest toughness, due to the presence of S ferrite, which was not the case in the heat affected zones, having surprisingly high toughness, including both crack initiation and growth energies. Finally, J-R curves have been obtained by using standard fracture mechanics testing procedure and compared with crack driving forces, obtained numerically using King's method, enabling estimation of influence of cracks on integrity of ferriteaustenite welded joints in cylindrical pressure vessel.",
journal = "Welding in the World",
title = "An analysis of the influence of weldment heterogeneity in ferrite-austenite welded structure",
pages = "563-559",
number = "SPECIAL ISSUE",
volume = "53",
url = "https://hdl.handle.net/21.15107/rcub_machinery_883"
}

Grabulov, V., Jovičić, R., Sedmak, A., Odanović, Z.,& Petronić, S.. (2009). An analysis of the influence of weldment heterogeneity in ferrite-austenite welded structure. in Welding in the World, 53(SPECIAL ISSUE), 559-563.
https://hdl.handle.net/21.15107/rcub_machinery_883

Grabulov V, Jovičić R, Sedmak A, Odanović Z, Petronić S. An analysis of the influence of weldment heterogeneity in ferrite-austenite welded structure. in Welding in the World. 2009;53(SPECIAL ISSUE):559-563.
https://hdl.handle.net/21.15107/rcub_machinery_883 .

Grabulov, Vencislav, Jovičić, Radomir, Sedmak, Aleksandar, Odanović, Zoran, Petronić, Sanja, "An analysis of the influence of weldment heterogeneity in ferrite-austenite welded structure" in Welding in the World, 53, no. SPECIAL ISSUE (2009):559-563,
https://hdl.handle.net/21.15107/rcub_machinery_883 .

TY  - JOUR
AU  - Ristivojević, Mileta
AU  - Odanović, Zoran
AU  - Stamenić, Zoran
AU  - Lazović, Tatjana
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/908
AB  - Početak novog veka opterećuju tri velika globalna problema: ekonomski energetski i ekološki. Oni su toliko kulminirali da su postali svakodnevna tema, na različitim nivoima, a u cilju iznalaženja potencijalnih rešenja. U spektru mogućih rešenja nalazi se i reparatura mašinskih delova. Domen dejstva tehnologije reparature u rešavanju nastalih globalnih problema prikazan je u ovom radu.
AB  - A Beginning of the 21st century is characterized by three major and global problems: economic, energetic and ecologic. Those problems are so accumulated, that they become every day theme on all levels in a way to solve them. In a spectrum of possible solutions is a machine parts reparature. The reparature technology scope is shown in this paper.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika - Mašinstvo
T1  - Reparatura u funkciji ekonomske, energetske i ekološke efikasnosti
T1  - Reparature in economic, energetic and ecology function
EP  - 18
IS  - 2
SP  - 13
VL  - 58
UR  - https://hdl.handle.net/21.15107/rcub_machinery_908
ER  - 

@article{
author = "Ristivojević, Mileta and Odanović, Zoran and Stamenić, Zoran and Lazović, Tatjana",
year = "2009",
abstract = "Početak novog veka opterećuju tri velika globalna problema: ekonomski energetski i ekološki. Oni su toliko kulminirali da su postali svakodnevna tema, na različitim nivoima, a u cilju iznalaženja potencijalnih rešenja. U spektru mogućih rešenja nalazi se i reparatura mašinskih delova. Domen dejstva tehnologije reparature u rešavanju nastalih globalnih problema prikazan je u ovom radu., A Beginning of the 21st century is characterized by three major and global problems: economic, energetic and ecologic. Those problems are so accumulated, that they become every day theme on all levels in a way to solve them. In a spectrum of possible solutions is a machine parts reparature. The reparature technology scope is shown in this paper.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika - Mašinstvo",
title = "Reparatura u funkciji ekonomske, energetske i ekološke efikasnosti, Reparature in economic, energetic and ecology function",
pages = "18-13",
number = "2",
volume = "58",
url = "https://hdl.handle.net/21.15107/rcub_machinery_908"
}

Ristivojević, M., Odanović, Z., Stamenić, Z.,& Lazović, T.. (2009). Reparatura u funkciji ekonomske, energetske i ekološke efikasnosti. in Tehnika - Mašinstvo
Savez inženjera i tehničara Srbije, Beograd., 58(2), 13-18.
https://hdl.handle.net/21.15107/rcub_machinery_908

Ristivojević M, Odanović Z, Stamenić Z, Lazović T. Reparatura u funkciji ekonomske, energetske i ekološke efikasnosti. in Tehnika - Mašinstvo. 2009;58(2):13-18.
https://hdl.handle.net/21.15107/rcub_machinery_908 .

Ristivojević, Mileta, Odanović, Zoran, Stamenić, Zoran, Lazović, Tatjana, "Reparatura u funkciji ekonomske, energetske i ekološke efikasnosti" in Tehnika - Mašinstvo, 58, no. 2 (2009):13-18,
https://hdl.handle.net/21.15107/rcub_machinery_908 .

TY  - JOUR
AU  - Popović, Olivera
AU  - Prokić-Cvetković, Radica
AU  - Grabulov, Vencislav
AU  - Odanović, Zoran
PY  - 2006
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/625
AB  - U savremenim uslovima eksploatacije, šine su izložene sve većim brzinama i osovinskim opterećenjima, pa se javljaju i sve veća eksploatacijska oštećenja. Dok je habanje šina značajno smanjeno uvođenjem u upotrebu odgovarajućih čelika i sredstava za podmazivanje, greške nastale usled kontaktnog zamora, tzv. RCF (rolling contact fatigue) greške, postaju sve veći problem na visoko opterećenim prugama. Reparatura oštećenih delova šina postupkom navarivanja je standardna metoda održavanja šina u svetu, a manjim delom kod nas, pa su razvijeni poluautomatski postupci koji su zamenili sporo ručno navarivanje obloženim elektrodama. U radu su prikazani rezultati primene nekih samozaštitnih punjenih žica i punjenih žica za rad u zaštiti CO2 gasa koji se koriste za navarivanje šina. Prikazano je kako vrsta dodatnog materijala utiče na raspodelu tvrdoće kroz presek spoja i makroskopski izgled navara. Dobijeni rezultati predstavljaju dobru osnovu za dalja ispitivanja u cilju određivanja eksploataciskog veka repariranih šina.
AB  - In modern railway exploitation, rails are exposed to a constant increase of speed and axles loads, which are causing increased exploitation damages. While wear has been reduced by introducing appropriate steel and lubricants rolling contact fatigue (RCF) defects have become more prominent on highly busy routes. Reparation of damaged rails by hard facing is standard method of maintenance in the world, but not in our country. Slowly manual processes are replaced by half-automatic welding processes. This paper describes behavior of some self-shielded flux cored wires and gas-shielded flux cored wires which are using for hard facing processes. Influence of the type of filler material on the hardness distribution and macroscopic view of deposit metal is also shown. These results should be used for further testing according to determination of remain life of repaired rails.
PB  - DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd
T2  - Zavarivanje i zavarene konstrukcije
T1  - Izbor punjenih žica za navarivanje železničkih šina
T1  - Selection of the flux cored wires for repair welding of the rails
EP  - 139
IS  - 4
SP  - 131
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_machinery_625
ER  - 

@article{
author = "Popović, Olivera and Prokić-Cvetković, Radica and Grabulov, Vencislav and Odanović, Zoran",
year = "2006",
abstract = "U savremenim uslovima eksploatacije, šine su izložene sve većim brzinama i osovinskim opterećenjima, pa se javljaju i sve veća eksploatacijska oštećenja. Dok je habanje šina značajno smanjeno uvođenjem u upotrebu odgovarajućih čelika i sredstava za podmazivanje, greške nastale usled kontaktnog zamora, tzv. RCF (rolling contact fatigue) greške, postaju sve veći problem na visoko opterećenim prugama. Reparatura oštećenih delova šina postupkom navarivanja je standardna metoda održavanja šina u svetu, a manjim delom kod nas, pa su razvijeni poluautomatski postupci koji su zamenili sporo ručno navarivanje obloženim elektrodama. U radu su prikazani rezultati primene nekih samozaštitnih punjenih žica i punjenih žica za rad u zaštiti CO2 gasa koji se koriste za navarivanje šina. Prikazano je kako vrsta dodatnog materijala utiče na raspodelu tvrdoće kroz presek spoja i makroskopski izgled navara. Dobijeni rezultati predstavljaju dobru osnovu za dalja ispitivanja u cilju određivanja eksploataciskog veka repariranih šina., In modern railway exploitation, rails are exposed to a constant increase of speed and axles loads, which are causing increased exploitation damages. While wear has been reduced by introducing appropriate steel and lubricants rolling contact fatigue (RCF) defects have become more prominent on highly busy routes. Reparation of damaged rails by hard facing is standard method of maintenance in the world, but not in our country. Slowly manual processes are replaced by half-automatic welding processes. This paper describes behavior of some self-shielded flux cored wires and gas-shielded flux cored wires which are using for hard facing processes. Influence of the type of filler material on the hardness distribution and macroscopic view of deposit metal is also shown. These results should be used for further testing according to determination of remain life of repaired rails.",
publisher = "DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd",
journal = "Zavarivanje i zavarene konstrukcije",
title = "Izbor punjenih žica za navarivanje železničkih šina, Selection of the flux cored wires for repair welding of the rails",
pages = "139-131",
number = "4",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_machinery_625"
}

Popović, O., Prokić-Cvetković, R., Grabulov, V.,& Odanović, Z.. (2006). Izbor punjenih žica za navarivanje železničkih šina. in Zavarivanje i zavarene konstrukcije
DUZS - Društvo za unapređivanje zavarivanja u Srbiji, Beograd., 51(4), 131-139.
https://hdl.handle.net/21.15107/rcub_machinery_625

Popović O, Prokić-Cvetković R, Grabulov V, Odanović Z. Izbor punjenih žica za navarivanje železničkih šina. in Zavarivanje i zavarene konstrukcije. 2006;51(4):131-139.
https://hdl.handle.net/21.15107/rcub_machinery_625 .

Popović, Olivera, Prokić-Cvetković, Radica, Grabulov, Vencislav, Odanović, Zoran, "Izbor punjenih žica za navarivanje železničkih šina" in Zavarivanje i zavarene konstrukcije, 51, no. 4 (2006):131-139,
https://hdl.handle.net/21.15107/rcub_machinery_625 .

TY  - CONF
AU  - Grabulov, Vencislav
AU  - Odanović, Zoran
AU  - Sedmak, Aleksandar
AU  - Ćirić, R.
AU  - Antić, M.
PY  - 2005
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/480
AB  - The results of weldability assessment of high strength low carbon microalloyed steel are presented. These results are used for integrity assessment of weldments. Two aspects of behaviour were considered. These are the risk of cracking during manufacturing and the risk of brittle fracture due to weld joints susceptibility. The experiments were performed on thermo - mechanically control processed steel (TMCP), high strength low carbon steel, microalloyed with Ti and Nb. Welded joints were performed by Shield Metal Arc Welding (SMAW) welding process. Weldability assessment included the tests of mechanical and structural properties of welded joints, welded joint susceptibility to hot (FISCO test), cold cracking (Control Thermal Severity - CTS test), reheat cracks (Tanaka-test) and to lamellar tearing (Windows test), as well as the susceptibility test to ductile-to-brittle transition behaviour of welded joint and its constituents. Since considered steel is of high strength, special attention is paid to fracture mechanics methods testing of welded joint behaviour in the presence of a crack-like defect. Standard Test Method for Crack-Tip Opening Displacement, - CTOD i.e. δ c for maximal load, is used in the analysis of stable crack growth. Transition temperatures, i.e. 50% Charpy impact energy and drop weight test for nil ductility temperature (NOT) were used for determination of behaviour related to brittle fracture. Test results have shown that welded joints obtained by specified welding technology, are of satisfactory quality regarding mechanical properties, but also regarding crack initiation and growth. The benefit of using that approach for integrity assessment of high strength steels weldment can be expressed in reduced wall thickness, followed by significant reduction in welded joint cross-sections, welding consumables consumption and time necessary to produce welded joints.
PB  - Institut International de la Soudure
C3  - Welding in the World
T1  - Weldability testing of microalloyed steel and integrity assessment of welded joint
EP  - 477
IS  - 9 SPEC. ISS.
SP  - 464
VL  - 49
UR  - https://hdl.handle.net/21.15107/rcub_machinery_480
ER  - 

@conference{
author = "Grabulov, Vencislav and Odanović, Zoran and Sedmak, Aleksandar and Ćirić, R. and Antić, M.",
year = "2005",
abstract = "The results of weldability assessment of high strength low carbon microalloyed steel are presented. These results are used for integrity assessment of weldments. Two aspects of behaviour were considered. These are the risk of cracking during manufacturing and the risk of brittle fracture due to weld joints susceptibility. The experiments were performed on thermo - mechanically control processed steel (TMCP), high strength low carbon steel, microalloyed with Ti and Nb. Welded joints were performed by Shield Metal Arc Welding (SMAW) welding process. Weldability assessment included the tests of mechanical and structural properties of welded joints, welded joint susceptibility to hot (FISCO test), cold cracking (Control Thermal Severity - CTS test), reheat cracks (Tanaka-test) and to lamellar tearing (Windows test), as well as the susceptibility test to ductile-to-brittle transition behaviour of welded joint and its constituents. Since considered steel is of high strength, special attention is paid to fracture mechanics methods testing of welded joint behaviour in the presence of a crack-like defect. Standard Test Method for Crack-Tip Opening Displacement, - CTOD i.e. δ c for maximal load, is used in the analysis of stable crack growth. Transition temperatures, i.e. 50% Charpy impact energy and drop weight test for nil ductility temperature (NOT) were used for determination of behaviour related to brittle fracture. Test results have shown that welded joints obtained by specified welding technology, are of satisfactory quality regarding mechanical properties, but also regarding crack initiation and growth. The benefit of using that approach for integrity assessment of high strength steels weldment can be expressed in reduced wall thickness, followed by significant reduction in welded joint cross-sections, welding consumables consumption and time necessary to produce welded joints.",
publisher = "Institut International de la Soudure",
journal = "Welding in the World",
title = "Weldability testing of microalloyed steel and integrity assessment of welded joint",
pages = "477-464",
number = "9 SPEC. ISS.",
volume = "49",
url = "https://hdl.handle.net/21.15107/rcub_machinery_480"
}

Grabulov, V., Odanović, Z., Sedmak, A., Ćirić, R.,& Antić, M.. (2005). Weldability testing of microalloyed steel and integrity assessment of welded joint. in Welding in the World
Institut International de la Soudure., 49(9 SPEC. ISS.), 464-477.
https://hdl.handle.net/21.15107/rcub_machinery_480

Grabulov V, Odanović Z, Sedmak A, Ćirić R, Antić M. Weldability testing of microalloyed steel and integrity assessment of welded joint. in Welding in the World. 2005;49(9 SPEC. ISS.):464-477.
https://hdl.handle.net/21.15107/rcub_machinery_480 .

Grabulov, Vencislav, Odanović, Zoran, Sedmak, Aleksandar, Ćirić, R., Antić, M., "Weldability testing of microalloyed steel and integrity assessment of welded joint" in Welding in the World, 49, no. 9 SPEC. ISS. (2005):464-477,
https://hdl.handle.net/21.15107/rcub_machinery_480 .