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Article Dans Une Revue Composites Science and Technology Année : 2010

Coupled visco-mechanical and diffusion void growth modelling during composite curing

Y. Ledru
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Robert Piquet
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Fabrice Schmidt
Laurent Michel

Résumé

Most critical processing step during long fiber reinforced epoxy matrix composite laminate manufacturing is the polymerization stage. If not optimized, it gives birth to defects in the bulk material, such as voids. These defects are considered as possible sources of damage in the composite parts. The aim of this work is to model the evolution of void growth in thermoset composite laminates after ply collation (autoclave processes) or resin impregnation (RTM, LCM process). A coupled mechanical and diffusion model is presented to better predict the final void size at the end of polymerization. Amongst the parameter investigated, onset of pressure application and diffusive species concentration where found to have a major effect on void size evolution during curing process.

Domaines

Matériaux
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Dates et versions

hal-00690067 , version 1 (21-04-2012)

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Y. Ledru, Gérard Bernhart, Robert Piquet, Fabrice Schmidt, Laurent Michel. Coupled visco-mechanical and diffusion void growth modelling during composite curing. Composites Science and Technology, 2010, 70 (15), pp.2139-2145. ⟨10.1016/j.compscitech.2010.08.013⟩. ⟨hal-00690067⟩
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