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The effect of contact geometry on fretting wear rates and mechanisms for a high strength steel

In fretting, the wear volume is generally assumed to be proportional to the load and slid distance, but independent of the contact area (Archard’s wear law). This paper shows that this is not the case, and that not only the rate, but also the mechanisms of wear depend upon the contact area (this is the first time such an observation has been reported). This has significant implications for laboratory simulation and modelling of fretting damage; laboratory tests must be designed to replicate the fretting mechanisms observed in practice; models must be based upon contact geometry-dependent wear coefficients