THE QUANTITATIVE – QUALITATIVE CORRELATION OF FRICTION AND WEAR IN LINEAR DRY CONTACT BETWEEN STEEL SURFACES AND SHORT GLASS FIBER REINFORCED POLYMERS
Résumé
The aim was to highlight the evolution of the wear process depending on the evolution of the friction coefficient and the dependency between wear and load, coupled with the sliding speed. As a result, it was possible to graphically illustrate the evolution of the friction coefficient and the resulting change in the wear process, emphasizing the abrasive, adhesive and corrosive wear. The evolution of the plastic material transfer as a function of the contact temperature, namely of the power lost by friction (product between the contact pressure and sliding speed, pv) was aimed at and it was, thus, highlighted. It has been demonstrated that in the case of a 30% shor glass fibers (SGF) content the contact temperatures can reach and even exceed the yield limit of the plastic material. We illustrated the evolution of the steel surface wear and the contact temperature as a function of the friction coefficient. A detailed evaluation of the influence of the normal load and the sliding speed (and, also, of the metallic surface roughness) on the friction coefficient was conducted.
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