首页> 外文会议>Leeds-Lyon Symposium on Tribology; 20040907-10; Leeds(GB) >Experimental investigations of Rolling Contact Fatigue of dented surfaces using artificial defects
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Experimental investigations of Rolling Contact Fatigue of dented surfaces using artificial defects

机译:利用人工缺陷的凹陷表面滚动接触疲劳的实验研究

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The presence of contaminant debris in many mechanisms leads to premature Rolling Contact Fatigue failure initiated at the surface. The authors made experiments with naturally dented surfaces. The contacting surfaces were indented with either ductile particles (M50 powder) or tough particles (silicon carbides). The specimens were then fatigue tested. One of the main problems of this type of investigation is the very time consuming and random procedure. In fact, even if the number of dents on the contacting surfaces is well controlled, the position in the contact and the dent geometry parameters vary from one dent to another. In this paper, the authors used artificial defects to study the fatigue life reduction and the damage process versus the dent geometry and the contact conditions.
机译:在许多机制中,污染物碎片的存在会导致表面引发过早的滚动接触疲劳故障。作者对自然凹陷的表面进行了实验。接触表面用韧性颗粒(M50粉末)或坚硬颗粒(碳化硅)压痕。然后对样品进行疲劳测试。这种调查的主要问题之一是非常耗时且随机的程序。实际上,即使接触表面上的凹痕的数量得到了很好的控制,接触点的位置和凹痕的几何参数也会因一个凹痕而异。在本文中,作者使用人工缺陷研究了疲劳寿命的降低以及损伤过程与凹痕几何形状和接触条件的关系。

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