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Proceedings Paper

Interferometry Determination Of Thermal Diffusivity
Author(s): E. T. Brook-Levinson; V. F. Vinokurov; Z. Plochocki
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Paper Abstract

The theory and the experimental results on interferometry determination of thermal diffusivity are given. The method is based on interferometry registration of an unsteady temperature field in a flat transparent layer of a medium. Using Clausius-Mossotti equation and the long-time asymptotic behavior of an exact solution to the one-dimensional unsteady heat conduction equation, the formula has been derived which relates the thermal diffusivity of substance to the time derivative of some function of the number of fringes. Measurements for air have been made. The obtained results are compared with the known experimental data.

Paper Details

Date Published: 3 April 1989
PDF: 8 pages
Proc. SPIE 1121, Interferometry '89, (3 April 1989); doi: 10.1117/12.961324
Show Author Affiliations
E. T. Brook-Levinson, Byelorussian Academy of Sciences (Russian Federation)
V. F. Vinokurov, Byelorussian Academy of Sciences (Russian Federation)
Z. Plochocki, Institue of Fundamental Technological Research of the Polish Academy of Sciences (Poland)

Published in SPIE Proceedings Vol. 1121:
Interferometry '89

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