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Titre du document / Document title

Numerical prediction of permeability tensor for three dimensional circular braided preform by considering intra-tow flow

Auteur(s) / Author(s)

SONG Y. S. (1) ; CHUNG K. (1) ; KANG T. J. (1) ; YOUN J. R. (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) School of Materials Science and Engineering, Seoul National University, 56-1, Shinlim-Dong, Gwanak-Gu, Seoul, 151-744, COREE, REPUBLIQUE DE

Résumé / Abstract

Resin transfer moulding is characterized by the permeability tensor, which is a measure of the resistance to resin flow through the preform. Complete prediction of the second order permeability tensor for three dimensional circular braided preforms is critical to an understanding of the resin transfer moulding process. The permeability can be predicted by considering resin flow through the multi-axial fibre structure. In this study, the permeability tensor for a 3-D circular braided preform was calculated by solving a boundary problem of a periodic unit cell. The flow field through the unit cell was obtained by using a 3-D control volume finite element method (CVFEM) and Darcy's law was utilized to obtain the permeability tensor. The flow analyses were carried out for two cases, one in which the fibre tow was regarded as a permeable porous medium, and one in which it was regarded as an impermeable solid. It was found that the flow within the intra-tow region of the braided preform was negligible if the inter-tow porosity was relatively high, but flow through the tow, especially flow in the thickness direction must be considered when the porosity is low. The permeability of the braided preform was measured by a radial flow experiment and compared with the predicted permeability.

Revue / Journal Title

Polymers & polymer composites    ISSN  0967-3911 

Source / Source

2005, vol. 13, no4, pp. 323-334 [12 page(s) (article)] (31 ref.)

Langue / Language

Anglais

Editeur / Publisher

Rapra, Shrewsbury, ROYAUME-UNI  (1993) (Revue)

Mots-clés anglais / English Keywords

Mineral fiber

;

Transport properties

;

Experimental test

;

Theoretical study

;

Numerical simulation

;

Darcy law

;

Modeling

;

Porous medium flow

;

Glass fiber

;

Polymer

;

Composite material

;

Circular shape

;

Finite volume method

;

Tridirectional fiber material

;

Transfer molding

;

Braided fabric

;

Permeability

;

Mots-clés français / French Keywords

Préforme

;

Fibre minérale

;

Propriété transport

;

Vérification expérimentale

;

Etude théorique

;

Simulation numérique

;

Loi Darcy

;

Modélisation

;

Ecoulement milieu poreux

;

Fibre verre

;

Polymère

;

Matériau composite

;

Forme circulaire

;

Méthode volume fini

;

Matériau fibre tridirectionnelle

;

Moulage transfert

;

Tissu tressé

;

Perméabilité

;

Mots-clés espagnols / Spanish Keywords

Fibra inorgánica

;

Propiedad transporte

;

Verificación experimental

;

Estudio teórico

;

Simulación numérica

;

Ley Darcy

;

Modelización

;

Flujo medio poroso

;

Fibra vidrio

;

Polímero

;

Material compuesto

;

Forma circular

;

Método volumen finito

;

Material fibra tridireccional

;

Moldeo por transferencia

;

Tela trenzado

;

Permeabilidad

;

Localisation / Location

INIST-CNRS, Cote INIST : 21856, 35400013821393.0010

Nº notice refdoc (ud4) : 16877769



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