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Metal Physics and Rolling Contact Fatigue Testing Pages: 12 Published: Oct 2012
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View License Agreement A description of a novel rolling contact fatigue test for evaluation of bearing steel characteristics is presented. Unlike traditional approaches where bearings are tested until failure, the proposed testing method is based on monitoring the material response during testing. The measurement principles are based on changes of the surface geometry, such as grooving, because of accumulation of subsurface micro-plastic damage and on observations of related changes in the steel micro-structure. The test method is complemented by introducing a detailed material model that is used to model the groove development. The model is used to analyse the groove data and yields dedicated material property parameters, which can be used directly to model general material behaviour under rolling contact fatigue conditions. An example is given to illustrate the method and its use in assessing bearing steel performance. | ||
