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RESEARCH PAPERS

Influence of Water on Fatigue-Failure Location and Surface Alteration During Rolling-Contact Lubrication

[+] Author and Article Information
P. Schatzberg, I. M. Felsen

Materials Laboratory, Naval Ship Research and Development Center, Annapolis, Md.

J. of Lubrication Tech 91(2), 301-307 (Apr 01, 1969) (7 pages) doi:10.1115/1.3554919 History: Received July 10, 1968; Online August 23, 2011

Abstract

The influence of dissolved water in the lubricant on fatigue-failure location and surface alteration was determined from experiments conducted with a planetary four-ball machine in the range of 925 to 1300 ksi maximum Hertz compressive stress. The distribution of fatigue spalls on the bearing ball surfaces was influenced by small amounts of water in the hydrocarbon lubricant. In the presence of 0.01 precent water an increase in fatigue-failures occurred on the chemically more reactive portion of the bearing balls. An increase in wear during rolling contact was observed due to the presence of water. This was demonstrated by weight determinations, surface profile measurements and light microscopy.

Copyright © 1969 by ASME
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