Numéro
J. Phys. IV France
Volume 03, Numéro C7, Novembre 1993
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés
Page(s) C7-1267 - C7-1272
DOI http://dx.doi.org/10.1051/jp4:19937195
The 3rd European Conference on Advanced Materials and Processes
Troisiéme Conférence Européenne sur les Matériaux et les Procédés Avancés

J. Phys. IV France 03 (1993) C7-1267-C7-1272

DOI: 10.1051/jp4:19937195

Non-destructive characterization of refractories by mirage effect and photothermal microscopy

G. SAVIGNAT1, P. BOCH1, L. POTTIER2, D. VANDEMBROUCQ2 and D. FOURNIER2

1  Laboratoire Céramiques et Matériaux Minéraux, ESPCI, 10 rue Vauquelin, 75005 Paris, France
2  Laboratoire d'Instrumentation de l'UPMC, URA 0005 du CNRS, ESPCI, 10 rue Vauquelin, 75005 Paris, France


Abstract
In this paper we will demonstrate how thermal waves have turned out to be a good probe for the thermal parameter determination, at various spatial scales for heterogeneous materials such as ceramics. After the detailed description of the two setups we have used (mirage and photothermal microscope), we will explain how to proceed to achieve theoretical calculations either in a 1D geometry or in a 3D one. Then, we will illustrate our purpose with examples of refractory studies. Because these samples are porous and multiphase materials, they have to be investigated at macroscopic scale as well as at a microscopic scale. Finally, we will show results on the temporal behaviour of heat diffusion which can reveal how heat diffuses inside the sample.



© EDP Sciences 1993