On Three-Dimensional Fatigue Crack Propagation under Constant Amplitude Loading
The equation of fatigue crack propagation rate is indispensable to precisely predict the fatigue life of structure containing three-dimensional crack under constant amplitude loading. Considering the crack closure effects and thickness effects in real structures, the equation of fatigue crack propagation rate under tri-axial stress state is presented. And the fatigue propagation lives of LY12-BCZYU aluminium alloy plate specimens with central through crack are predicted by this equation and validated by experimental results. Validation against calculations by the model and experimental data shows a good agreement.
Zhengyi Jiang and Chunliang Zhang
Y. T. He et al., "On Three-Dimensional Fatigue Crack Propagation under Constant Amplitude Loading", Advanced Materials Research, Vols. 97-101, pp. 852-855, 2010