Rolling contact fatigue and wear in rail steels: An overview

International Conference on Mechanical, Materials and Renewable Energy

机械制造;材料科学;能源学

Aquib Anis, M.^1 ; Srivastava, J.P.^1 ; Duhan, N.R.^1 ; Sarkar, P.K.^1

Department of Mechanical Engineering, Indian Institute of Technology (ISM), Dhanbad, Jharkhand

826004, India^1

关键词: Critical failures;    Material separation;    Operational mechanism;    Railway accidents;    Railway transport;    Rolling contact fatigue;    Train derailment;    Wheel/rail contact;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/377/1/012098/pdf
DOI  :  10.1088/1757-899X/377/1/012098

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Rolling contact fatigue (RCF) and wear of rails are two critical failure generating problems of railway transport system worldwide. This paper presents an overview of investigations and state of the art knowledge on the mechanisms of RCF and wear studies revealed till date. Notably, majority of railway accidents are found to be promoted by RCF induced rail fracture and train derailments. The operational mechanism of wheel/rail contact introduces varied proportion of stick-slip formation from the involved rolling-sliding phenomenon. Sliding induced friction contributes many variety of defects of which wear is a prominent material separation process that in severity can also promote crack initiation. In view of the gravity of RCF and wear present study, as a first step, overviews their characterisation approaches. This understanding will help to formulate strategies in investigating the problems to evolve scientific and technological strategies for their mitigation.