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TECHNICAL PAPERS: Analytical and Experimental Techniques

Estimation of Local Thermophysical Properties of a One-Dimensional Periodic Heterogeneous Medium by Infrared Image Processing and Volume Averaging Method

[+] Author and Article Information
M. Varenne, J.-C. Batsale, C. Gobbé

LEPT-ENSAM, Esplanade des Arts et Métiers, F-33405 Talence Cedex, France

J. Heat Transfer 122(1), 21-26 (Sep 10, 1999) (6 pages) doi:10.1115/1.521432 History: Received March 27, 1999; Revised September 10, 1999
Copyright © 2000 by ASME
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References

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Varenne, M., Batsale, J. C., and Gobbé, C., 2000, “Estimation of a Local Thermal Conductivity Field of a Plane Heterogeneous Medium With Infrared Images Processing and the Volume Averaging Method,” High Temperatures–High Pressures, No. 32, to be published.

Figures

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Diagram of a periodic stratified medium
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Schematic of the experimental device
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Infrared image of the multilayered sample at time t
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Local and macroscopic temperature fields, experimental results
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b fields, t=1 s,t=150 s, and t=300 s
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Experimental thermal resistivity R field
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R field with and without spatial inverse filtering
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Resistivity of the sample: estimation of a function, and estimation of the resistivity of one of the media
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Validation of the local thermal equilibrium hypothesis

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