Observations of Cracks from Microscopic Holes of PEEK Bearings under Rolling-Contact Fatigue in Water

Shunsuke Oyama; Katsuyuki Kida; Edson Costa Santos; Hitonobu Koike; Takashi Honda; Yuji Kashima

doi:10.4028/www.scientific.net/AMR.566.197

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 566Observations of Cracks from Microscopic Holes of...

Observations of Cracks from Microscopic Holes of PEEK Bearings under Rolling-Contact Fatigue in Water

Abstract:

The behavior of surface cracks in PEEK thrust bearings under rolling contact fatigue (RCF) was investigated. Eight small holes were introduced along the bottom race surface, and RCF tests underwater using different loads were carried out. The cracks growing from the holes were observed by using a microscope. It was found that the surface cracks could not be explained by Hertzian crack theory or the ‘wedge effect’ models. This indicates that the standard theories cannot be generally applied to investigation of PEEK bearings working under RCF in water.

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Periodical:

Advanced Materials Research (Volume 566)

Pages:

197-202

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.566.197

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Online since:

September 2012

Authors:

Shunsuke Oyama, Katsuyuki Kida, Edson Costa Santos, Hitonobu Koike, Takashi Honda, Yuji Kashima

Keywords:

Crack, PEEK, Polymer Bearing, Rolling Contact Fatigue (RCF), Tribology

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