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Communication Dans Un Congrès Année : 2017

Effect of thermal fatigue on the mechanical properties of a continuous composite fiber used for car clutch facings

Résumé

In dry clutch systems, the clutch facing is an annular shaped continuous fibre composite, with an organic matrix, which transmits the torque from the engine to the wheels. In use it is submitted to thermo-mechanical cycling. Due to the composite fibre organisation, the strain field under thermo-mechanical loading is not homogenous. Full field data is needed to describe the material behaviour. Digital Image Stereo-Correlation was used to determine the coefficients of thermal expansion of the material. To determine the effect of temperature and cyclic loading on the mechanical properties, the composite was subjected to different thermal cycles. The material properties are modified with increasing temperature and number of cycles. These results were confirmed by dynamic mechanical analysis which showed thermal ageing of the resin. The local information given by the strain fields revealed a non-uniform evolution of the material properties with thermal cycling. Moreover, optical investigation and tensile tests also show an evolution of the damage of the material with the thermal cycles.
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Dates et versions

hal-04239555 , version 1 (12-10-2023)

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  • HAL Id : hal-04239555 , version 1

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Camille Flament, Bruno Berthel, Michelle Salvia, Gérard Crosland, Isabelle Alix. Effect of thermal fatigue on the mechanical properties of a continuous composite fiber used for car clutch facings. 36èmes Journées de Printemps de la Société Française de Métallurgie et de Matériaux (SF2M), SF2M, May 2017, Paris, France. ⟨hal-04239555⟩
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