Thermal Characterization of Multilayer Structures from Transient Thermal Response
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
Most methods for the characterization of the thermal properties of materials can only be implemented on macroscopic homogeneous specimens with a simple geometry such as rods or single slabs. This paper addresses the issue of the non destructive evaluation of multilayered structures. Assuming a planar heat flow, analytical solutions of the temperature were found for two and three layer geometries. Experimental data was taken on samples composed of typical materials to validate the theory. The material properties in each layer were found by fitting the thermal responses with the analytic solutions.