Analysis of Surface Crack Propagation in Lubricated Rolling Contact

Abstract

Growth behavior of surface cracks formed on lubricated rolling-sliding contact surfaces is studied by calculating three-dimensional mixed-mode stress intensity factors KI, KII, and KIII. It is shown from the viewpoint of the fatigue crack propagation that the hydraulic pressure effect pointed out by Way may be accepted as a possible mechanism of surface crack growth. Some of the experimental facts on pitting are also confirmed qualitatively.