The effects of surface defects on the fatigue of water and oil lubricated contacts

Gao, N. and Dwyer-Joyce, R. S. (2000) The effects of surface defects on the fatigue of water and oil lubricated contacts. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 214, (6), 611-626. (doi:10.1243/1350650001543458).


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A study into effects of surface defects on the rolling contact fatigue of brass and rail steel has been undertaken on a twin-disc rolling-sliding test machine with both oil and water lubrication. Furrows and dents were artificially introduced into the disc surfaces, and surface microcracks and pits were monitored by means of surface replication. The results showed that artificial dents only reduce the fatigue life of the contact with oil, but not water lubrication. With oil lubrication the fatigue failure initiates at the surface defect. However, with water as a lubricant the whole of the surface undergoes cracking with the defect having no preferential effect. The possible mechanisms behind this behaviour are discussed in this paper

Item Type: Article
Digital Object Identifier (DOI): doi:10.1243/1350650001543458
ISSNs: 1350-6501 (print)
Related URLs:
Keywords: surface defect, fatigue, lubricated contact
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences
ePrint ID: 22172
Accepted Date and Publication Date:
Date Deposited: 07 Feb 2007
Last Modified: 31 Mar 2016 11:41

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