Physically short fatigue crack growth from notch described by plasticity-corrected stress intensity factor

When a physically short fatigue crack propagates from a notch root, the crack growth rate shows a “V-shaped” behavior; i.e., the rate firstly decreases and then increases as the crack propagates. In this study, a plasticity-corrected stress intensity factor (PC-SIF) is applied to describe the effects of both notch's plastic zone and crack-tip's plastic zone in ductile materials under cyclic loading. Experiments in previous study for disk-shaped...