The Basic Relationship between Residual Stress Profile Patterns and Fatigue Life of Precision Machined Surfaces in Rolling Contact
نویسندگان
چکیده
The characteristics of residual stress (RS) profiles and their effects on rolling contact fatigue life for precision turned and ground surfaces with a white layer (WL) are very controversial. The key findings of this study are: (a) The basic RS profiles by a sharp tool can be fundamentally changed by a turned WL but not a ground WL; (b) The hook shaped RS profile of a turned surface may have about 40% more fatigue life than a ground one; (c) The white layer may reduce fatigue life as much as 7-8 times despite the deep compressive RS in the subsurface.
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