Equation 4 interprets the volumetric wear rate as a function of the difference between an activation mechanism (), equivalent to the flux leakage term, and a passivation mechanism Q, equivalent to TSo. The former aims at increasing the internal energy of the solid, whence inducing instability, whereas the latter reduces the internal energy whence induces stability or order. An interesting implication of Eq. 4 is that upon constriction of the heat transfer ability within the active volume, the passivation component Q is minimized and , the activation, assumes dominance. This promotes disorder within the material layers. The response of the material in such a case is to increase wear (or to degrade more material to re-establish order within the rubbing zone). Upon reaching a steady state, the activation term vanishes and the volumetric wear rate will be directly proportional to the efficiency of heat transfer away from active rubbing volume.
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Discussion: “An Application of Dimensional Analysis to Entropy-Wear Relationship,” (Amiri, M., Khonsari, M. M., Brahmeshwarkar, S., 2012, J. Tribol., 134, P. 011604)
Hisham A Abdel-Aal
Hisham A Abdel-Aal
Arts et Metier ParisTech, Rue Saint Dominique, BP 508, Chalons-en-Champagne, 51006,
e-mail: Hisham.abdel-aal@ensam.eu
France
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Hisham A Abdel-Aal
Arts et Metier ParisTech, Rue Saint Dominique, BP 508, Chalons-en-Champagne, 51006,
France
e-mail: Hisham.abdel-aal@ensam.eu
J. Tribol. Jul 2012, 134(3): 035501 (1 pages)
Published Online: June 25, 2012
Article history
Received:
March 14, 2012
Revised:
March 30, 2012
Online:
June 25, 2012
Published:
June 25, 2012
Citation
Abdel-Aal, H. A. (June 25, 2012). "Discussion: “An Application of Dimensional Analysis to Entropy-Wear Relationship,” (Amiri, M., Khonsari, M. M., Brahmeshwarkar, S., 2012, J. Tribol., 134, P. 011604)." ASME. J. Tribol. July 2012; 134(3): 035501. https://doi.org/10.1115/1.4006579
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