Methods for determination of residual stress in rail
Abstract
The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages.
Keywords:
railway / residual stress / strain gauge / X-ray diffraction / ultrasonic measurement / magnetic measurementSource:
Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš, 2018, 113-116Publisher:
- Faculty of Mechanical Engineering, Niš
Funding / projects:
Institution/Community
Inovacioni centarTY - CONF AU - Mirković, Nikola AU - Brajović, Ljiljana AU - Malović, Miodrag PY - 2018 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3764 AB - The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages. PB - Faculty of Mechanical Engineering, Niš C3 - Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš T1 - Methods for determination of residual stress in rail EP - 116 SP - 113 UR - https://hdl.handle.net/21.15107/rcub_technorep_3764 ER -
@conference{ author = "Mirković, Nikola and Brajović, Ljiljana and Malović, Miodrag", year = "2018", abstract = "The residual stresses in rails are generated during the manufacturing process and have uneven distribution in rail cross section. The residual stress is a part of basic tensile stress in rail foot. For used rail, the residual stress value of 80 MPa is commonly used in the engineering calculations. On the other hand, the standard EN 13674 prescribes residual stress values up to 250 MPa and destructive method using electrical strain gauge for measurement of rail residual stress. Since destructive measurement methods are unsuitable for use in the track, the possible non-destructive in situ methods for measuring of residual stresses in the rails are discussed in this paper. The fundamentals of X-ray diffraction, ultrasonic, magnetic and electromagnetic methods are explained, as well as, their advantages and disadvantages.", publisher = "Faculty of Mechanical Engineering, Niš", journal = "Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš", title = "Methods for determination of residual stress in rail", pages = "116-113", url = "https://hdl.handle.net/21.15107/rcub_technorep_3764" }
Mirković, N., Brajović, L.,& Malović, M.. (2018). Methods for determination of residual stress in rail. in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš Faculty of Mechanical Engineering, Niš., 113-116. https://hdl.handle.net/21.15107/rcub_technorep_3764
Mirković N, Brajović L, Malović M. Methods for determination of residual stress in rail. in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš. 2018;:113-116. https://hdl.handle.net/21.15107/rcub_technorep_3764 .
Mirković, Nikola, Brajović, Ljiljana, Malović, Miodrag, "Methods for determination of residual stress in rail" in Proceedings / XVIII Scientific-expert conference on railways - RAILCON 18, october 11-12, 2018, Niš (2018):113-116, https://hdl.handle.net/21.15107/rcub_technorep_3764 .