期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 70, 期 9, 页码 1410-1418出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2010.04.023
关键词
Textile composites; Mechanical properties; Transport properties; Biot coefficients; Porous material
The microporomechanical approach (via homogenization schemes) has been used and combined with tri-axial tests to verify the Blot theory for the perfectly straight unidirectional fiber assembly in a previous paper [Tran T, Binetruy C, Comas-Cardona S, Abriak NE. Microporomechanical behaviour of perfectly straight unidirectional fiber material: theoretical and experimental. Compos Sci Technol 2009;69:199-206.]. The comparison of theoretical and experimental results is in good agreement, i.e. the Blot coefficients are clearly lower than one for densely packed fiber array. This result will be developed in this article in the case where the fibers are not perfectly straight but in misalignment (unidirectional fiber assembly in localized contact). Furthermore, within the same theoretical framework, the transverse compression modulus and the hydraulic permeability will be also estimated for the fiber reinforcement of double-scale porosity. The homogenization schemes used in this article are the self-consistent and the one proposed by Mori-Tanaka. The estimated and, when possible, bibliographical results for different types of fibrous materials (carbon, kevlar and glass fibers) are compared and show good agreement. (C) 2010 Elsevier Ltd. All rights reserved.
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