DEPENDENCE OF BEARING FATIGUE LIFE ON FILM THICKNESS TO SURFACE ROUGHNESS RATIO.

J. Y. Liu, T. E. Tallian, J. I. McCool

Research output: Contribution to journalArticle

Abstract

A statistical expression, showing as a function of the film parameter (film thickness/surface roughness) the fractional reduction in fatigue life at ″full film″ conditions due to the competition between asperity induced fatigue and fatigue due to indigenous surface defects and subsurface inclusions, is presented. To unify the experimental data a ″relative″ fatigue life raised to the power of e, the Weibull dispersion parameter, is plotted against the film parameter. Comparisons between the theoretical and experimental results are then made which reveal that the increase in bearing fatigue life due to the film parameter can be described by a theoretical model incorporating a reference film parameter. 16 refs.

Original languageEnglish (US)
Journal[No source information available]
StatePublished - 1974

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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