Fatigue crack growth in bearing steel under cyclic mode II + static biaxial compression

Mode II fatigue crack growth under reversed shear and static biaxial compression was investigated in two bearing steels. Many aborted branches, quasi-orthogonal to the main crack, were observed along face. The compressive stress parallel hindered of these branches favored coplanar mode growth. face sliding displacement profiles measured by DIC used derive $\Delta_{\rm KII,eff}$, at tip, using elastic-plastic FE simulations with friction, an inverse method. Friction corrected kinetics obtained for both