J. Phys. IV France
Volume 125, June 2005
Page(s) 609 - 612

J. Phys. IV France 125 (2005) 609-612

DOI: 10.1051/jp4:2005125140

Theory and experiments of photothermal radiometry with solid cylindrical samples

C. Wang, A. Mandelis and Y. Liu

Center for Advanced Diffusion Wave Technologies, Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON, M5S 3G8, Canada

We extend the applications of photothermal diagnostics by means of laser infrared photothermal radiometry (PTR) to samples with curved surfaces. Specifically, we present both theoretical and experimental PTR studies on solid cylindrical samples. Using the Green function method, the thermal-wave field distribution of a cylindrical surface is obtained. The characteristics of the thermal-wave field with respect to thermal diffusivity of the material, the diameter of the sample, and the measurement angle are discussed. Experimental results show good agreement with the theory.

© EDP Sciences 2005