Evaluation of slant crack propagation under RCF in railway rail

Crack propagation due to rolling contact fatigue (RCF) could be a significant potential challenge to the integrity of railway rails because it may lead to a serious disaster. Fatigue cracks subjected to cyclic rolling contact force experience a complex non-proportional mixed loading and complicated...

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Bibliographic Details
Published in:Journal of mechanical science and technology 2011, 25(5), , pp.1215-1220
Main Authors: Xu, Xiangyuan, Cho, Doo-Ho, Chang, Yoon-Suk, Choi, Jae-Boong, Kim, Young-Jin, Jun, Hyun-Kyu, Seo, Jung-Won, Kim, Dae-Sang
Format: Article
Language:English
Subjects:
Applied sciences
Contact
Control
Crack propagation
Cracks
Dynamical Systems
Engineering
Exact sciences and technology
Fatigue failure
Fracture mechanics (crack, fatigue, damage...)
Friction, wear, lubrication
Fundamental areas of phenomenology (including applications)
Industrial and Production Engineering
Machine components
Mechanical contact (friction...)
Mechanical Engineering
Mechanical engineering. Machine design
Physics
Railroads
Rails
Railway engineering
Rolling contact
Solid mechanics
Structural and continuum mechanics
Vibration
기계공학
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Summary:Crack propagation due to rolling contact fatigue (RCF) could be a significant potential challenge to the integrity of railway rails because it may lead to a serious disaster. Fatigue cracks subjected to cyclic rolling contact force experience a complex non-proportional mixed loading and complicated boundary condition. In the present research, complex crack opening/closure/sliding/locked behaviors as the cyclic contact loading movement is analyzed considering liquid lubrication action on rail surfaces as well as crack faces. Based on a series of FE analyses, the calculations of the effective SIF ranges for RCF cracks under certain contact loading and boundary conditions are proposed in the form of polynomial functions which will be appropriately used to predict RCF crack growth rate.
ISSN:1738-494X
1976-3824
DOI:10.1007/s12206-011-0312-4