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Thermal effect on the tribo-mechanical behavior of natural fiber composites at micro-scale

Article dans une revue avec comité de lecture
Author
BUKKAPATNAM, Satish T.S.
EL AMRI, Iskander
ccEL MANSORI, Mohamed
211915 Mechanics surfaces and materials processing [MSMP]
301080 Texas A&M University [College Station]
ccCHEGDANI, Faissal

URI
http://hdl.handle.net/10985/18719
DOI
10.1016/j.triboint.2019.06.024
Date
2019
Journal
Tribology International

Abstract

This paper aims to explore the thermal influence on the micro-tribo-mechanical behavior of natural fiber composites. Nanoindentation and scratch-test are used to characterize flax fibers reinforced polypropylene (PP) composites. Results show a different thermo-mechanical behavior between flax fibers and PP matrix. While the stiffness of PP matrix decreases by increasing the sample temperature, the stiffness of flax fibers shows an increase then a decrease by changing the sample temperature from 25 °C to 100 °C with a maximum at 60 °C. This attests to a modification of the chemical composition of flax fibers when increasing the temperature. The specific thermo-mechanical behavior of flax fibers affects their friction comportment at a high sliding speed which demonstrates that the tribology of NFRP composites is thermo-mechanical-dependent.

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