Observation of Wall Slip in Elastohydrodynamic Lubrication

[+] Author and Article Information
M. Kaneta, H. Nishikawa, K. Kameishi

Department of Mechanical Engineering, Kyushu Institute of Technology, Sensui-cho, Tobata, Kitakyushu 804, Japan

J. Tribol 112(3), 447-452 (Jul 01, 1990) (6 pages) doi:10.1115/1.2920280 History: Received September 18, 1989; Revised January 23, 1990; Online June 05, 2008


A new experimental technique using optical interferometry has been developed to obtain a direct indication of non-Newtonian response of an oil film under conditions of elastohydrodynamic (EHD) lubrication. A glass disk or a steel ball has been driven by a stepping motor so that crescent-shaped thick oil films with undulation in thickness along the direction of motion have been generated. The experiments have been carried out under pure rolling and pure sliding conditions. It has been found that the oil in an EHD contact behaves like a solid and slips at or near the contact surfaces.

Copyright © 1990 by The American Society of Mechanical Engineers
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