A thermodynamic approach for prediction of wear coefficient under unlubricated sliding condition

Document Type

Article

Publication Date

6-1-2010

Abstract

During a sliding process, the surface asperities tend to undergo fatigue fracture, break off, and form wear debris. This article applies the principles of continuum damage mechanics (CDM) to predict the appropriate adhesive wear coefficient. Using the CDM approach, we predict the number of cycles before crack nucleation sets in, evaluate the probability that an asperity forms a wear particle, and use this information to derive an expression for the wear coefficient. Experimental wear coefficient results for Aluminum 6061 sliding against stainless steel support the validity of the analytical expression for wear coefficient. A series of results are presented for the variation of wear coefficient as a function of friction coefficient for SAE 4340, Aluminum 6061, Aluminum 2024, and Titanium 6ALV4. © 2010 Springer Science+Business Media, LLC.

Publication Source (Journal or Book title)

Tribology Letters

First Page

347

Last Page

354

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