Eur. Phys. J. AP 23, 207-211 (2003)
https://doi.org/10.1051/epjap:2003020

Thermal characterization of semi-transparent media: measurement of phononic diffusivity of glass and silica^*

¹ Équipe de Recherche en Mécanique et Plasturgie ERMeP, InSIC Institut Supérieur d'Ingénierie de la Conception, 27 rue d'Hellieule, 88100 Saint Dié des Vosges, France
² Laboratoire d'Énergétique et de Mécanique Théorique et Appliquée, UMR-CNRS 7563, Institut National Polytechnique de Lorraine, 54516 Vandœuvre-lès-Nancy, France

Corresponding author: mlazard@insic.fr

Received: 20 November 2001
Revised: 12 November 2002
Accepted: 23 January 2003
Published online: 10 April 2003

Abstract

Materials such as glasses, insulated foams, polymers are semi-transparent. In order to measure the phononic diffusivity of such media – in which the heat transfer is both conductive and radiative – it is necessary to develop a complete methodology. The technique, we propose here, is an extension of the Flash method with the use of a semi-analytical combined model. It permits to determine the diffusivity of materials such as glass and silica for a large range of temperature (from 300 K to 700 K).