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Proceedings Paper

Nondestructive testing and evaluation of historical monuments using thermography and electronic speckle pattern interferometry (ESPI)
Author(s): Peter Meinlschmidt; Thorsten Bothe; Klaus D. Hinsch; Lutz Mehlhorn
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Paper Abstract

Two remote and nondestructive testing techniques for the study of the decay mechanism of stone and plaster surfaces are presented. While electronic speckle pattern interferometer (ESPI) measures the 3-D-microdeformations of the surface, transient thermography shows at the same time invisible defects and structural faults as a reaction to the impact of short heat pulses. The combination of these two different techniques demonstrates its feasibility to detect restorative work and shows the compatibility of classical and modern substitutes and restoration techniques to historical materials.

Paper Details

Date Published: 31 March 1998
PDF: 9 pages
Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); doi: 10.1117/12.301533
Show Author Affiliations
Peter Meinlschmidt, Fraunhofer Institut fuer Holzforschung (Germany)
Thorsten Bothe, Carl von Ossietzky Univ. (Germany)
Klaus D. Hinsch, Carl von Ossietzky Univ. (Germany)
Lutz Mehlhorn, Fraunhofer Institut fuer Holzforschung (Germany)


Published in SPIE Proceedings Vol. 3396:
Nondestructive Evaluation of Materials and Composites II
Steven R. Doctor; Carol A. Nove; George Y. Baaklini, Editor(s)

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