Polymer/Metal Conformal Sliding Contact With Forced Convective Cooling

[+] Author and Article Information
J. K. Haverstick

Westinghouse Electric Corporation, 4400 Alafaya Trail, Orlando, FL 32826

T. C. Ovaert

Department of Mechanical Engineering, The Pennsylvania State University, University Park, PA 16802

J. Tribol 117(1), 1-8 (Jan 01, 1995) (8 pages) doi:10.1115/1.2830601 History: Received February 11, 1993; Revised March 08, 1994; Online January 24, 2008


A model for predicting the onset of severe wear for a conformal polymer/metal sliding contact with forced convective cooling has been developed. Finite difference techniques were used for the solution of the bulk contact temperature for the two-dimensional model. The flash temperature was calculated assuming a limiting-case annular, stationary heat source. The limiting load for a given set of operating conditions was solved iteratively, assuming a relationship between strength and temperature, for a heat-resistant polymer, polyethersulphone (PES). An experimental apparatus was constructed, and specimens were tested near the predicted points of wear instability. In addition, specimens were examined using a scanning electron microscope (SEM), and at the most severe operating conditions, signs of thermal softening and gross material transfer were evident. A discussion of model is made in light of the predicted and experimental results.

Copyright © 1995 by The American Society of Mechanical Engineers
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