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Friction, acoustic emission, and wear mechanisms of a PEKK polymer

Yahiaoui, Malik and Chabert, France and Paris, Jean-Yves and Nassiet, Valérie and Denape, Jean Friction, acoustic emission, and wear mechanisms of a PEKK polymer. (2019) Tribology International, 132. 154-164. ISSN 0301-679X

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Official URL: https://doi.org/10.1016/j.triboint.2018.12.020


The tribological behavior of a steel/PEKK ball-on-flat contact was studied regarding the load, the velocity and the sliding distance in reciprocating or unidirectional motion. The friction measurements were synchronized with an acoustic emission (AE) device. The results show a behavior change associated with an adiabatic effect on the polymer when the mechanical energy input increases. Two interfacial mechanisms are also characterized: Schallamarch ridges and longitudinal ploughings. These mechanisms are related to two AE frequencies of 0.2 MHz and 1 MHz. The discussion on these two AE populations brings a stronger analysis and completes the friction and the wear mechanisms results.

Item Type:Article
HAL Id:hal-03498995
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Laboratory name:
Deposited On:10 Jan 2019 09:23

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