Path prediction of I plus III mixed mode fatigue crack propagation

作者：Li, H. F.; Qian, C. F.^*

来源：Fatigue and Fracture of Engineering Materials and Structures, 2012, 35(2): 185-190.

DOI：10.1111/j.1460-2695.2011.01605.x

• crack path prediction
• crack propagation rate
• fatigue crack propagation
• mixed mode crack

In this paper, compact tension specimens with tilted cracks under monotonic fatigue loading were tested to investigate I + III mixed mode fatigue crack propagation in the material of No. 45 steel with the emphasis on the propagation rate expression and the path prediction. It is found that during the mode transformation process, the crack propagation rate is still controlled by the mode I stress intensity factor; and Paris equation also holds for the relationship between and ?KI. Crack propagation path can be predicted only when both the crack mode transformation rate and propagation rate are available.

• 出版日期2012-2
• 单位北京化工大学