Damage mechanisms in short glass fibre reinforced thermoplastic during in situ microtomography tensile tests
TypeArticles dans des revues avec comité de lecture
Micromechanical modelling of short fibre reinforced thermoplastics requires identification of damage mechanisms and their kinetics as a function of their microstructure. A compact tensile machine has been designed to observe damage mechanisms during in situ microtomography tensile tests. 3D pictures of the gage length are presented at different levels of damage, from the initial state to the failure of the specimen. Fibre failure, damage at fibre ends, debonding and damage growth in the matrix have been identified as damage mechanisms for these materials. Vicinity between crossing fibres has been pointed out as microstructural configurations driving the damage mechanisms. An analysis of the damage evolution (density, morphology and orientation) allows to establish a macroscopic failure scenario, consistent with microscopic observations.
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ARIF, Muhamad Fatikul; SAINTIER, Nicolas; MERAGHNI, Fodil; FITOUSSI, Joseph; CHEMISKY, Yves; ROBERT, Gilles (Elsevier, 2014)This paper aims at studying fatigue damage behavior of injection molded 30 wt% short glass fiber reinforced polyamide-66 composite (PA66/GF30). The evolution of dynamic modulus, hysteresis area, cyclic creep and temperature ...
ARIF, Muhamad Fatikul; MERAGHNI, Fodil; SAINTIER, Nicolas; CHEMISKY, Yves; FITOUSSI, Joseph; ROBERT, Gilles (2014)Damage behavior of dry as molded, 30 wt% short glass fiber reinforced polyamide-66 (PA66/GF30) under fatigue loading has been investigated by X-ray micro-computed tomography (μCT). Based on visual observation on μCT images, ...
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