Characterization of a New Fully Recycled Carbon Fiber Reinforced Composite Subjected to High Strain Rate Tension

Hassen Meftah (1, 2) , Sahbi Tamboura (2) , Joseph Fitoussi (1) , Hachmi Bendaly (2) , Abbas Tcharkhtchi (1)

1 PIMM - Laboratoire Procédés et Ingénierie en Mécanique et Matériaux
2 Université de Sousse

The aim of this study is the complete physicochemical characterization and strain rate effect multi-scale analysis of a new fully recycled carbon fiber reinforced composites for automotive crash application. Two composites made of 20% wt short recycled carbon fibers (CF) are obtained by injection molding. The morphology and the degree of dispersion of CF in the matrixes were examined using a new ultrasonic method and SEM. High strain tensile behavior up to 100 s-1 is investigated. In order to avoid perturbation due to inertial effect and wave propagation, the specimen geometry was optimized. The elastic properties appear to be insensitive to the strain rate. However, a high strain rate effect on the local visco-plasticity of the matrix and fiber/matrix interface visco-damageable behavior is emphasized. The predominant damage mechanisms evolve from generalized matrix local ductility at low strain rate regime to fiber/matrix interface debonding and fibers pull-out at high strain rate regime.

Domaines: Sciences de l'ingénieur [physics]

Hassen Meftah, Sahbi Tamboura, Joseph Fitoussi, Hachmi Bendaly, Abbas Tcharkhtchi. Characterization of a New Fully Recycled Carbon Fiber Reinforced Composite Subjected to High Strain Rate Tension. Applied Composite Materials, 2017, 24, pp.1-20. ⟨10.1007/s10443-017-9632-6⟩. ⟨hal-02180847⟩