Optical Measurement of EHL Film under Oscillating Needle Roller Contacts


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In this paper, the EHL oil film thickness and shape between a needle roller and a flat rectangular glass in pure rolling oscillated working conditions had been measured based on optical interferometry. The EHL behavior affected by the applied load, oscillating frequency was investigated. The typical film shape varies of interference pictures on the maximum needle roller rotation velocity was obtained and compared each other. It is found the side constrictions are always the most severe and they are strongly speeds and loads dependence.



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Edited by:

Yunn-Lin Hwang, Jeng-Haur Horng and Chin-Chung Wei




X. J. Shen et al., "Optical Measurement of EHL Film under Oscillating Needle Roller Contacts", Key Engineering Materials, Vol. 642, pp. 270-274, 2015

Online since:

April 2015




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