Optical Analysis of Porous Metal Bearings

[+] Author and Article Information
K. M. Yung, A. Cameron

Lubrication Laboratory, Department of Mechanical Engineering, Imperial College, London SW7, England

J. of Lubrication Tech 101(1), 99-104 (Jan 01, 1979) (6 pages) doi:10.1115/1.3453285 History: Received August 24, 1978; Online October 20, 2010


Optical interferometry is used to study the lubrication of porous bearings. The results suggest that thermal expansion in each metal particle causes it to act as a miniature tapered land bearing. An approximate analysis gives an order of magnitude for the tilt. All the evidence is against the existence of a continuous oil film round the bearing when used normally, which hitherto is the accepted model for the operation of these bearings. Micro-recirculation of the oil was observed and the importance of running-in is discussed.

Copyright © 1979 by ASME
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