Thermal waves in materials with inhomogeneous thermal conductivity

J. Fivez; J. Thoen

doi:doi:10.1051/jp4:1994767

Issue		J. Phys. IV France Volume 04, Number C7, Juillet 1994 8th International Topical Meeting on Photoacoustic and Photothermal Phenomena 8 ITMP³ / 8éme conférence internationale de photoacoustique et photothermique


Page(s)		C7-283 - C7-286
DOI		https://doi.org/10.1051/jp4:1994767

8th International Topical Meeting on Photoacoustic and Photothermal Phenomena
8 ITMP³ / 8éme conférence internationale de photoacoustique et photothermique

J. Phys. IV France 04 (1994) C7-283-C7-286
DOI: 10.1051/jp4:1994767

Thermal waves in materials with inhomogeneous thermal conductivity

J. Fivez and J. Thoen

Laboratorium voor Akoestiek en Warmtegeleiding, Departement Natuurkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, 3001 Leuven, Belgium

Abstract
Plane thermal waves in media with linearly varying thermal conductivity are analyzed, where we allow for an internal heat source arising from optical absorption. Then we apply the result to calculate the surface temperature of a semi-infinite solid in a photothermal experiment. We show how we can infer an inverse procedure that is able to yield, from only a few experimental data, a linear conductivity profile that reveals the most important aspects of the actual profile.