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Consideration of the Dual Scale of Pore Size in Wicking Validation on Carbon Reinforcements ans Application to the Swelling of Bio-Based Reinforcements

Abstract : In Liquid Composite Moulding (LCM) process, capillary phenomena occur during impregnation of a fibrous reinforcement. Capillary wicking in a fibrous medium is described by the Washburn’s equation and then can be modelled through the Darcy’s law where the driving force can be described as a capillary pressure. In case of natural fibres, Washburn’s model is not sufficient to describe wicking because of water absorption that causes fibre swelling during liquid imbibition. In this study, a new model is proposed, taking into account the effect of fibre swelling at two scales: elementary fibres and yarns. These effects have been modelled and a modified approach of Washburn’s theory has been developed to predict capillary wicking in fabric undergoing swelling in liquids.
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https://hal.mines-ales.fr/hal-02443422
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Submitted on : Friday, January 17, 2020 - 10:29:55 AM
Last modification on : Friday, February 14, 2020 - 1:26:04 PM

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  • HAL Id : hal-02443422, version 1

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Hong Nhan Vo, Monica Pucci, Stéphane Corn, Nicolas Le Moigne, William Garat, et al.. Consideration of the Dual Scale of Pore Size in Wicking Validation on Carbon Reinforcements ans Application to the Swelling of Bio-Based Reinforcements. ICCM 22 - 22nd International Conference on Composite Materials, Aug 2019, Melbourne, Australia. ⟨hal-02443422⟩

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