An investigation of the roles of crack initiation, propagation and ratchetting in producing wear in metallic sliding contacts
- 1 January 2000
- journal article
- research article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
- Vol. 214 (1), 63-74
- https://doi.org/10.1243/0954406001522813
Abstract
Experiments are described in which the edge of a hard wedge is loaded against the periphery of a rotating disc of softer specimen material. The normal and frictional forces and inward movement of the wedge as the disc wears are continually monitored throughout a test. The results obtained are used together with measurements of the wearing surfaces of metallographic sections to test a newly proposed wear model. In this model it is assumed that ratchetting causes failure of the surface and hence the production of wear particles, while low-cycle fatigue determines the crack propagation rate and hence the wear rate.Keywords
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