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Polymers and Polymer Composites

PREDICTION OF PERMEABILITY TENSOR FOR PLAIN WOVEN FABRIC BY USING CONTROL VOLUME FINITE ELEMENT METHOD

June 1, 2003 By: Song Y S; Chung K; Kang T J; Youn J R Research article

Title: PREDICTION OF PERMEABILITY TENSOR FOR PLAIN WOVEN FABRIC BY USING CONTROL VOLUME FINITE ELEMENT METHOD
Page Range: p.465-476
Author(s): Song Y S; Chung K; Kang T J; Youn J R
File size: 211K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 11
Issue No: No. 6

Abstract
The efficiency of the resin transfer moulding process for the production of fibre-reinforced polymer composites, is dependent on the determination of the permeability of the preform. In this study, permeability at the microscopic level was computed for the square and hexagonal packing of the filaments inside each yarn by using control volume finite element method. Permeability for the three-dimensional macroscopic unit cell (which represents curved yarns in a plain woven fabric) was calculated by using the same numerical method without considering resin flow inside each yarn. By application of the proposed coupled flow model, which combines macroscopic permeability with microscopic permeability, the total permeability was determined for the plain woven fabric and compared with an experimental value. This study is claimed to have considered a more realistic unit cell representing the three-dimensional preform architecture, including tow crimp, spacing and stacking. It was observed that in-plane flow was more dominant than transverse flow within the woven preform, and the effect of the stacking order of a multi-layered preform, was negligible. 26 refs.

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