0000000000717682
AUTHOR
Xavier Gabrion
showing 4 related works from this author
Effect of moisture uptake on flax-reinforced composite laminates: influence on dynamic and quasi-static properties
2016
International audience; This study proposes to investigate the effect of moisture uptake on a wide spectrum of mechanical behaviours of unidirectional flax fibre-reinforced epoxy laminates. It includes tensile monotonic and fatigue testing. Results show that UD flax-epoxy composites, whenexposed to hygrothermal conditioning at 70°C and 85% RH, exhibit a diffusion kinetic which follows a one dimensional Fickian behaviour. The mass uptake at equilibrium is approximately 3.3 % and the diffusion coefficient 6.5 10-6 m2.s-1. Water vapour sorption is shown to induce a significant change in the shape of the tensile stress-strain curve. Contrary to all expectations, water saturation does not degrad…
Influence du chargement thermohydrique sur le comportement mécanique statique, cyclique et dynamique des composites renforcés de fibres de lin
2016
International audience; Ce travail porte sur la caractérisation de l’influence d’un chargement thermohydrique sur le comportement en traction quasi-statique, en fatigue et vibratoire d’un matériau composite lin/époxy unidirectionnel. Les résultats montrent que lorsque ces composites sont exposés à ces conditions hygrothermiques (70°C et 85% d’humidité relative), ils absorbent de l’eau suivant une loi de Fick 1D. L’absorption d’eau induit un changement de l’allure de la réponse en traction, diminue le module élastique d’environ 20% et augmente le coefficient d’amortissement d’approximativement 50%. La résistance sous chargement monotone n’est pas significativement affectée par l’absorption d…
Development and characterization of a bio-based epoxy matrix for high-grade bio-based composites
2019
This study aims to develop 100% bio-based hemp/epoxy composites for semi-structural and structural applications. The thermal and mechanical performances of a 100% bio-based matrix derived from biomassare evaluated and reveal properties in the same order of magnitude as those obtained for polyepoxides based on DGEBA, that means a glass transition temperature of approximately 150°C and mechanical properties in the order of 120MPa for the maximum stress and 3.2 GPa for the tangent apparent modulus. This natural origin matrix is then used for the manufacture of composites reinforced with hemp rovings. The bending properties of these 100% bio-based materials are equivalent to those determined fo…
Development and characterization of a bio-based epoxy matrix for high-grade bio-based composites
2019
This study aims to develop 100% bio-based hemp/epoxy composites for semi-structural and structural applications. The thermal and mechanical performances of a 100% bio-based matrix derived from biomassare evaluated and reveal properties in the same order of magnitude as those obtained for polyepoxides based on DGEBA, that means a glass transition temperature of approximately 150°C and mechanical properties in the order of 120MPa for the maximum stress and 3.2 GPa for the tangent apparent modulus. This natural origin matrix is then used for the manufacture of composites reinforced with hemp rovings. The bending properties of these 100% bio-based materials are equivalent to those determined fo…