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Dynamic evolution of interface roughness during friction and wear processes

Kubiak, Krzysztof, Bigerelle, M., Mathia, T. G., Dubois, A. and Dubar, L. (2014) Dynamic evolution of interface roughness during friction and wear processes. Scanning, 36 (1). pp. 30-38. ISSN 0161-0457

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Dynamic evolution of surface roughness and influence of initial roughness (Sa=0.282 to 6.73 µm) during friction and wear processes has been analyzed experimentally. The mirror polished and rough surfaces (28 samples in total) have been prepared by surface polishing on Ti-6Al-4V and AISI 1045 samples. Friction and wear have been tested in classical sphere/plane configuration using linear reciprocating tribometer with very small displacement from 130 to 200 microns. After an initial period of rapid degradation, dynamic evolution of surface roughness converges to certain level specific to a given tribosystem. However, roughness at such dynamic interface is still increasing and analysis of initial roughness influence revealed that to certain extent, a rheology effect of interface can be observed and dynamic evolution of roughness will depend on initial condition and history of interface roughness evolution. Multiscale analysis shows that morphology created in wear process is composed from nano, micro and macro scale roughness. Therefore, mechanical parts working under very severe contact conditions, like rotor/blade contact, screws, clutch etc. with poor initial surface finishing are susceptible to have much shorter lifetime than a quality finished parts.

Item Type: Article
Additional Information: K.J. Kubiak would like to thank all staff members of Laboratory TEMPO at the University of Valenciennes in France for inviting him to the laboratory, for financial support of this work and for very fruitful collaboration.
Uncontrolled Keywords: dynamic surface roughness, dry friction, roughness metrology, surface finishing
Subjects: T Technology > TJ Mechanical engineering and machinery
Schools: School of Computing and Engineering
Depositing User: Krzysztof Kubiak
Date Deposited: 18 Sep 2014 15:42
Last Modified: 28 Aug 2021 18:56


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