Asperity Interactions In EHD Contacts

[+] Author and Article Information
H. S. Nagaraj, D. M. Sanborn, W. O. Winer

Georgia Institute of Technology, School of Mechanical Engineering, Atlanta, Ga.

J. of Lubrication Tech 100(2), 246-252 (Apr 01, 1978) (7 pages) doi:10.1115/1.3453155 History: Received April 18, 1977; Revised June 22, 1977; Online October 20, 2010


Infrared temperature measurements, ferrographic analysis, and surface profilimetry were used to monitor asperity interactions in a sliding EHD point contact. The contact temperature and surface profile signals obtained both before and after a run-in period are compared in the frequency domain by means of a Fourier analyzer. The interaction of surface asperities is accompanied by the presence of a high frequency component in the infrared signal. It is also shown that only a relatively narrow band of wavelengths of the surface profile spectrum are relevant in the interaction process.

Copyright © 1978 by ASME
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