Characterization of multiple wear mechanisms through entropy
Document Type
Article
Publication Date
12-1-2020
Abstract
In general, degradation of a tribo-pair involves multiple degradation processes. Yet existing wear models assume that only a single wear mechanism is present and thus fail to properly characterize the wear behavior. The present work applies the degradation entropy generation (DEG) theorem to arrive at a viable procedure for assessing wear involving multiple mechanisms. This theorem correlates the degradation forces and the entropy generation through a so-called degradation coefficient. To validate the hypothesis, laboratory experiments are performed on steel-brass tribo-pairs that experience transition from initially adhesive wear to the abrasive regime. Using the principles of thermodynamics, a simplified procedure is proposed that takes the existence of different regimes into account. The validation of the proposed method is also demonstrated using independent test results published in the literature.
Publication Source (Journal or Book title)
Tribology International
Recommended Citation
Lijesh, K., & Khonsari, M. (2020). Characterization of multiple wear mechanisms through entropy. Tribology International, 152 https://doi.org/10.1016/j.triboint.2020.106548