Abstract
The results of experimental investigation of railway wheel failures and strength anisotropy due to rolling contact fatigue are presented. The results indicate that plasticity acts to concentrate regions of intense hardening near the edges of contact. The determination of overall mechanical properties of small-scale volumes frequently relies on the indentation technique. Strength characteristics of the wheel material were investigated by dynamic indentation method and portable dynamic indentation tester was used for hardness measurements. It was found that some characteristic force values of the instrumented hardness test are very well correlated to tensile strength
About this article
Received
02 June 2008
Accepted
29 August 2008
Published
30 September 2008
Keywords
wheel-rail
contact
hardness
strength
Copyright © 2008 Vibroengineering
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