Cavitation Properties of Oils Under Dynamic Stressing by Tension

Williams, P. R.; Williams, R. L.

Abstract

We report measurements of the effective tensile strength FcFc of commercial “multigrade” oils (in the SAE viscosity grades 5W-30 and 10W-40) over a range of temperatures TT, which are representative of those encountered under their normal operating conditions (in the range 20°C⩽T⩽140°C20°C⩽T⩽140°C). Also reported are the values of FcFc that are obtained for Newtonian silicone oils over a range of shear viscosities. In the experiments reported herein, samples of liquid are subjected to dynamic stressing by a pressure-tension cycle, this being a feature of the conditions experienced by a lubricant within a dynamically loaded journal bearing and the method used to estimate FcFc avoids reliance on direct measurements of substantial dynamic tensions using conventional pressure transducers.

• Journal Article Type: Article
• Online Publication Date: Oct 29, 2004
• Publication Date: Oct 29, 2004
• Deposit Date: Aug 1, 2016
• Journal: Journal of Fluids Engineering; J. Fluids Eng.
• Print ISSN: 0098-2202
• Electronic ISSN: 1528-901X
• Publisher: American Society of Mechanical Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 127
• Issue: 2
• Pages: 282
• DOI: https://doi.org/10.1115/1.1881692
• Keywords: Mechanical Engineering; Fluid Flow and Transfer Processes
• Public URL: http://researchrepository.napier.ac.uk/Output/320673