Communication avec acte

Photothermal characterization of a multilayer ; application to a paint layer on metal
18th European Conference on Thermophysical Properties, Pau, France 31 Aug-4 Sep 2008.

par   Mihai CHIRTOC , S. Chotikaprakhan , Damien LEGAIE , Hervé PRON , Christian BISSIEUX , Nicolas HORNY

Résumé :


We present photoacoustic (PA) measurements on polished or oxidized steel samples, with or without a black paint layer. According to the one-dimensional (1D) heat flow model, the primary parameters of the PA signals are the thermal effusivity and the thermal resistance of the layer. 2D effects become relevant only below 1 Hz. The thermal conductivity and volume specific heat of the top layers could be determined after independent measurement of layer thicknesses.

Thématique du GRESPI concernée par cet article :