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RESEARCH PAPERS

The Thermal Diffusivity of Highly-Filled Rubber

[+] Author and Article Information
R. A. Schapery, R. E. Martin

Texas A&M University, College Station, Texas

J. Heat Transfer 96(2), 225-231 (May 01, 1974) (7 pages) doi:10.1115/1.3450169 History: Received July 30, 1973; Online August 11, 2010

Abstract

The influence of strain and temperature on the thermal diffusivity of solid propellant is investigated. Starting with the classical heat conduction equation for constant thermal properties, a simple procedure for experimentally determining the diffusivity and checking the validity of this equation is described. Existing theoretical bounds on the conductivity of composites with voids are then reviewed. Following a description of the experimental program, transient temperatures in two different solid propellants, covering the temperature range −320 deg F to 140 deg F and strain range 0 to 20 percent, are given and compared with theory. The diffusivity is found to vary noticeably with both strain and temperature.

Copyright © 1974 by ASME
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