Friction & Wear

An Application of Dimensional Analysis to Entropy-Wear Relationship

[+] Author and Article Information
M. Amiri, M. M. Khonsari, S. Brahmeshwarkar

Department of Mechanical Engineering,  Louisiana State University, 2508 Patrick Taylor Hall, Baton Rouge, LA 70803

J. Tribol 134(1), 011604 (Mar 06, 2012) (5 pages) doi:10.1115/1.4003765 History: Received September 02, 2010; Revised February 20, 2011; Published March 02, 2012; Online March 06, 2012

The Buckingham’s dimensional analysis is applied to dry sliding contact to determine a relationship between wear and entropy flow. The obtained nondimensional groups are correlated using experimental results pertaining to wear tests of a sliding contact in a disk-on-disk configuration for two sets of contacting materials, namely, bronze SAE 40 on steel 4140 and cartridge brass on steel 4140. The results of analysis are employed to calculate the Archard’s wear coefficient K. The obtained wear coefficient is compared with the available data in literature.

Copyright © 2012 by American Society of Mechanical Engineers
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Figure 1

Entropy of a system consists of entropy generation and entropy flow

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Figure 2

Schematic of contacting pairs; All dimensions are in millimeters

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Figure 3

Temperature data from thermocouples on the stationary specimen for bronze on steel with load = 17.79 N and speed = 200 rpm

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Figure 4

Wear data from LVDT for bronze on steel with load = 17.79 N and speed = 200 rpm

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Figure 5

Relationship between nondimensional groups



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