Pippan R, Hohenwarter A
Erich Schmid Institute of Materials Science Austrian Academy of Sciences Leoben 8700 Austria.
Department of Materials Physics Montanuniversität Leoben Leoben 8700 Austria.
Fatigue Fract Eng Mater Struct. 2017 Apr;40(4):471-495. doi: 10.1111/ffe.12578. Epub 2017 Feb 1.
Plasticity-induced, roughness-induced and oxide-induced crack closures are reviewed. Special attention is devoted to the physical origin, the consequences for the experimental determination and the prediction of the effective crack driving force for fatigue crack propagation. Plasticity-induced crack closure under plane stress and plane strain conditions require, in principle, a different explanation; however, both types are predictable. This is even the case in the transition region from the plane strain to the plane stress state and all types of loading conditions including constant and variable amplitude loading, the short crack case or the transition from small-scale to large-scale yielding. In contrast, the prediction of roughness-induced and oxide-induced closures is not as straightforward.
本文综述了塑性诱导、粗糙度诱导和氧化物诱导的裂纹闭合。特别关注了其物理起源、对实验测定的影响以及疲劳裂纹扩展有效裂纹驱动力的预测。平面应力和平面应变条件下的塑性诱导裂纹闭合原则上需要不同的解释；然而，这两种类型都是可预测的。在从平面应变到平面应力状态的过渡区域以及包括恒幅和变幅加载、短裂纹情况或从小范围屈服到大范围屈服的过渡等所有类型的加载条件下，情况都是如此。相比之下，粗糙度诱导和氧化物诱导闭合的预测并非那么直接。
