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标题：Investigation of subsurface fatigue crack in PEEK shaft under one-point rolling contact by using 2.5D layer observation method
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作者：Hitonobu KOIKE ; Genya YAMAGUCHI ; Koshiro MIZOBE 等
期刊名称：MATEC Web of Conferences
电子版ISSN：2261-236X
出版年度：2017
卷号：130
页码：1-4
DOI：10.1051/matecconf/201713009001
语种：English
出版社：EDP Sciences
摘要：Subsurface fatigue cracks under rolling contact area of the PEEK shaft against an alumina bearing’s ball were investigated for application of frictional part in mechanical element in special situations such as chemical environments. In order to explore the flaking process of the PEEK shaft, the rolling contact fatigue tests were carried out by using a one-point radial loading rolling contact machine. The flaking occurred on the rolling track of the PEEK shaft at approximate 4⨉105 fatigue cycles. The subsurface fatigue crack propagation was investigated by using 2.5-Dimension layer observation method. The flaking was caused by the propagations of surface cracks and subsurface shear cracks, and the flaking shape was half-ellipse. Moreover, beach marks as fatigue crack propagation in the flaking were observed.