Effective Thermal Conductivities of Fibrous Composites

[+] Author and Article Information
L. S. Han, A. A. Cosner

Department of Mechanical Engineering, The Ohio State University, Columbus, Ohio

J. Heat Transfer 103(2), 387-392 (May 01, 1981) (6 pages) doi:10.1115/1.3244471 History: Received February 19, 1980; Online October 20, 2009


Most composite research to date has been concerned with mechanical properties. However, with anticipated use of composite materials in high temperature aero-space structures and other applications, thermal properties have become essential design information. This paper summarizes the results of a rigorous analysis to determine the steady-state effective thermal conductivities of fiber-matrix type of composites. A principal purpose of the present work is to investigate a class of heat conduction problems for which the proximity effects of the embedded fibers are significant. The fibers are considered dispersed uniformly in a matrix of resin. The dispersion patterns or configurations considered are: (1) uni-directional fibers in a matrix, as the simplest geometry, and (2) 0/90 configuration in which uni-directional tapes are overlaid at 90 deg to each other. The method of analysis is to solve a two-region steady-state heat conduction equation analytically or numerically. The analysis assumes prior knowledge of the geometry and the thermal conductivities of the composite constituents.

Copyright © 1981 by ASME
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