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Contribution à la compréhension des mécanismes élémentaires d'usure douce des élastomères chargés réticulés

Abstract : On the rubber tread of tyres, wear patterns, called craters appear in soft conditions. There diameters are a hundred micrometers and there depth around a ten micrometers.

The goal of the thesis has been to re-create and to study on an analytical tribometer these wear patterns on rubber filled compounds in order to explain their mechanisms of formation. Parameters such as rugosity, surface mechanical properties, coefficient of friction and loss of weight have been studied.

This study has shown that craters are due to the plastification of heterogeneities made of fillers badly dispersed, the agglomerats, when the plasticity threshold is exceeded by the strains.

As a consequence, the loss of weight observed on surfaces with craters is not due to the presence of these craters. Micro-ridges, created on a lower scale, cause most of the loss of material.
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https://tel.archives-ouvertes.fr/tel-00003258
Contributor : Gilles Petitet <>
Submitted on : Thursday, August 14, 2003 - 11:12:34 PM
Last modification on : Wednesday, November 20, 2019 - 2:27:19 AM
Long-term archiving on: : Friday, April 2, 2010 - 7:24:31 PM

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Gilles Petitet. Contribution à la compréhension des mécanismes élémentaires d'usure douce des élastomères chargés réticulés. Analyse de données, Statistiques et Probabilités [physics.data-an]. Ecole Centrale de Lyon, 2003. Français. ⟨tel-00003258⟩

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