Influence of multiaxial fatigue loading conditions on white etching crack formation
Influence of multiaxial fatigue loading conditions on white etching crack formation
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DOI：
10.1016/j.engfracmech.2016.12.011
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发表时间：
2017-04
影响因子：
5.4
通讯作者：
S. Averbeck;E. Kerscher
中科院分区：
文献类型：
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作者：
S. Averbeck;E. Kerscher
对滚动接触疲劳现象“白腐蚀裂纹”进行了研究。通过简化的测试装置，使用圆柱形试样和压缩-扭转载荷，再现了滚动轴承中导致WEC形成的载荷条件。对同相负载和异相负载进行了测试。结果表明，在相同的等效应力下，两个荷载循环的试验结果差异较大。多种表征技术用于比较裂纹行为和微观组织演变。研究发现，只有同相加载才会产生类wecs结构。采用临界平面法寻找不同结果的可能原因。
The rolling contact fatigue phenomenon “White Etching Cracks” (WEC) was investigated in this study. The load conditions in a rolling element bearing causing WEC formation were reproduced with a simplified testing setup, using cylindrical specimens and compression-torsion loads. In-phase and out-of-phase loads were tested. It was found that under the same equivalent stresses, the experimental results varied greatly between the two load cycles. Multiple characterisation techniques were used for comparing crack behaviour and microstructural evolution. It was found that only in-phase loading resulted in WEC-like structures. A critical plane approach was employed to find possible reasons for the differing results.