Fundamental Investigations of Fretting Fatigue : Part 3, Some Phenomena and Mechanisms of Surface Cracks
Fundamental Investigations of Fretting Fatigue : Part 3, Some Phenomena and Mechanisms of Surface Cracks
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微动疲劳的基础研究：第 3 部分，表面裂纹的一些现象和机制
DOI：
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发表时间：
1968
期刊：
影响因子：
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通讯作者：
K. Hirakawa
中科院分区：
文献类型：
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作者：
K. Nishioka;K. Hirakawa
已知，与微动相关的疲劳强度显著降低，并且经常在微动区的表层观察到非扩展疲劳裂纹。为了弄清这种现象的原因，研究了疲劳裂纹的萌生与微动引起的接触应力的关系。取得的主要结果如下。(1)疲劳强度的降低主要归因于微动摩擦力引起的应力集中。疲劳裂纹位于应力集中区域。(2)疲劳裂纹向表面倾斜，其方向也可以用接触应力来解释。
It has been known that the fatigue strength related to fretting is significantly reduced and that non-propagating fatigue cracks are often observed in the superficial layer of fretted area. In order to clarify the causes of such phenomena, the initiation of fatigue cracks is investigated in relation to the contact stresses caused by fretting. The main results obtained are as follows. (1) The reduction of fatigue strength is mainly attributed to the stress concentration caused by the frictional force due to fretting. Fatigue cracks are located at the stress concentrated area. (2) The fatigue cracks show inclinations to the surface, and the direction can also be explained by the contact stresses.