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Transport Properties of CVI Preforms and Composites

Published online by Cambridge University Press:  21 February 2011

G. B. Freeman ,
T. L. Starr  and
T. C. Elston
G. B. Freeman
Affiliation:
Georgia Institute of Technology, Atlanta, Georgia 30332
T. L. Starr
Affiliation:
Georgia Institute of Technology, Atlanta, Georgia 30332
T. C. Elston
Affiliation:
Georgia Institute of Technology, Atlanta, Georgia 30332
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Abstract

A simple model, based on physical microstructure, that predicts the anisotropic transport properties of cloth lay-up composites is discussed. This anisotropic material is modeled as a layer structure consisting of two, or more, isotropic components. Composite transport coefficients perpendicular and parallel to the layers are given by “series” and “parallel” combining laws involving the isotropic coefficients of these component materials and their volume fractions. These component material properties are determined using microstructural information and fundamental material properties. Model calculations are compared to experimental measurements for gas permeability.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 168 , 1989 , 49
Copyright
Copyright © Materials Research Society 1990

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