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Stimulated infrared thermography applied to thermophysical characterization of cultural heritage mural paintings

Published online by Cambridge University Press:  05 November 2012

Jean-Luc Bodnar ,
Jean-Louis Nicolas ,
Kamel Mouhoubi  and
Vincent Detalle
Jean-Luc Bodnar*
Affiliation:
GRESPI/ECATHERM, UFR Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 02, France
Jean-Louis Nicolas
Affiliation:
GRESPI/ECATHERM, UFR Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 02, France
Kamel Mouhoubi
Affiliation:
GRESPI/ECATHERM, UFR Sciences Exactes et Naturelles, BP 1039, 51687 Reims Cedex 02, France
Vincent Detalle
Affiliation:
Laboratoire de Recherche des Monuments Historiques, 29 avenue de Paris, 77420 Champs-sur-Marne, France
*
ae-mail: jean-luc.bodnar@univ-reims.fr
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Abstract

The purpose of this paper is to approach stimulated infrared thermography possibilities in terms of measuring longitudinal thermal diffusivity of mural paintings in situ. The measuring method principle is first submitted. It is based on temporal analysis of changes in the characteristic radius beams of spatial profiles of the photothermal signal, measured on the spot of the laser excitation. The feasibility of the method is demonstrated, thanks to a series of simulations. Lastly, the method enables to correctly estimate longitudinal thermal diffusivity in a test sample, and further in a fragment copy of “Saint Christophe” belonging to the Campana collection in the Louvre.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 60 , Issue 2: Topical issue: New trends in porous media. Edited by D. Salin , November 2012 , 21003
Copyright
© EDP Sciences, 2012

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References

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