Abstract
In order to investigate facture mechanism of super-high cycle fatigue and subsurface inner failure, high cycle fatigue test was conducted for rotating bending on SUJ2 steel and SCM435 steel, and for pure bending and pure torsion on SNCM439 steel. FRASTA analysis to simulate the process of fatigue crack propagation using 3D configuration of coupled areas of opposing fracture surface via computer was conducted.
