benbrinis, issam university of badji mokhtar - mechanical engineering department, Annaba, Algeria , redjel, bachir university of badji mokhtar - civil engineering laboratory (lgc), Annaba, Algeria

Experimental characterization of friction wear and mechanical behavior of train wagon brake shoes made of carbon/carbon (C/C) composite material with an organic matrix

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The analysis of the contact steel/composite allowed to raise a diagnosis of the wears of soles in composite materialsof brake of cars SNTF. Real tests on in-use testing carried out on 32 cars including 256 clogs evolving in variableweather situation, during several shuttles on a route of 600 km allowed to study the on-line behavior of clogs in thecourse of exploitation and to raise a classification of the wears allowing to identify that it more frequent. Acomparison established between two wintry and summer (summery) periods explains the influence of thetemperature on the wear of clogs. Downstream, measurements of the physical and mechanical characteristics of theorganic matrix C/C composite component of wagons brake shoe blocks show a characteristic dispersion mainly ofthe heterogeneous appearance of this type of material. Some braking tests carried out on a tribometer, enabled tostudy the frictional behavior and identify the physical mechanisms of friction, which were activated with contactunder severe braking loads.

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carbon , carbon composite , brake shoe , brake pad , wear , braking , friction

Revue Des Sciences Et De La Technologie, Synthèse

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