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Wear
Volume 253, Issues 1–2, July 2002, Pages 9–16
CM2000 S.I.

Wear and fatigue in rolling contact * Yoshitsugu Kimuraa, , , * Masami Sekizawab, * Akio Nitanaic * a Kagawa University, 1-1 Saiwai-cho, Takamatsu, Kagawa 760-8521, Japan * b NTN Corporation, 1578 Higashi-Kaizuka, Iwata, Shizuoka 438-8510, Japan * c Tamagawa University, 6-1-1 Tamagawa Gakuen, Machida, Tokyo 194-8610, Japan * http://dx.doi.org/10.1016/S0043-1648(02)00077-7, How to Cite or Link Using DOI * Permissions & Reprints

Abstract
Researches on wear and fatigue in rolling contact from a tribological viewpoint are introduced. Transmission of traction and accompanying microslip in the contact region play critical roles in these phenomena. First, a quantitative analysis of wear in rolling contact with microslip is introduced, and it is shown that a simplified microslip theory can explain its behavior. Second, a marked change in contact fatigue life with traction is demonstrated, and a theory is introduced which relates the fatigue life with cumulative shear strain in the subsurface.
Keywords
* Contact fatigue; * Microslip; * Rolling contact; * Wear

1. Introduction
Reduction of wear and prevention of contact fatigue are important objectives of railway technology and of tribology as well. However, these two engineering fields have been developing as different worlds, and researchers in the two fields seem to have been accustomed to different ways of thinking and different jargons. The present authors are tribologists (one of them is also a railway enthusiast!) and, in this paper, researches on wear and contact fatigue in rolling contact from a tribological viewpoint are introduced. The detailed mechanisms of wear are put aside, and a quantitative theory of wear at…...

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