On the correlation between mechanical degradation of lubricating grease and entropy

Document Type

Article

Publication Date

1-1-2014

Abstract

Irreversible thermodynamic theory is employed to study the mechanical degradation of lubricating grease undergoing shearing action. A correlation between the mechanical degradation of grease and entropy generation is established, and the results are verified experimentally using a rheometer, a journal bearing test rig, and a modified grease worker machine. It is shown that the degradation rate is linearly related to the entropy generation and that it can be used for estimation of the mechanically degraded grease life.

Publication Source (Journal or Book title)

Tribology Letters

First Page

197

Last Page

204

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