Development of Grease Film Breakdown Observing Device

Kenji Sunahara; Shinji Yamashita; Masaharu Yamamoto; Michiaki Ikeda; Hiroshi Nishikawa; Kenji Matsuda; Motohiro Kaneta

doi:10.2474/trol.3.40

Short communication

Development of Grease Film Breakdown Observing Device

Kenji Sunahara, Shinji Yamashita, Masaharu Yamamoto, Michiaki Ikeda, Hiroshi Nishikawa, Kenji Matsuda, Motohiro Kaneta

Author information

Keywords: electrical pitting, dielectric breakdown voltage, grease, EHL

JOURNAL FREE ACCESS

2008 Volume 3 Issue 2 Pages 40-43

DOI https://doi.org/10.2474/trol.3.40

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Abstract

The paper describes a newly developed smart device, which can detect the dielectric breakdown of the grease elastohydrodynamic film formed between a steel ball loaded against a glass disc due to electric discharge, while observing the shape and thickness of the film. The electric discharge between contacting surfaces can be observed as a white flash signal. It is found that the dielectric breakdown voltage increases with the film thickness.

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