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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

ANISOTROPY OF THERMAL CONDUCTIVITY OF SOLIDS AT HIGH TEMPERATURE: A METHOD USING A SOLAR FURNACE

Get access (open in a dialog) DOI: 10.1615/IHTC10.3060
pages 237-241

摘要

Thin thermostructural materials destinated to spacial applications are frequently C/C or C/SiC composites. Their anisotropy induces a radial heat flux along the flat direction inside the structure, in order to prevent local overheatings.
A method for determining the anisotropy of solid and opaque materials at high temperature is presented. A solar furnace is operated to heat a specimen throught a diaphragm. The steady-state temperature distribution in the material is a function of the anisotropy. The temperature profile on the rear side is measured and it is compared with an analytical solution. An optimized algorithm is operated to identify the value of the anisotropy.