Nondestructive testing and evaluation of historical monuments using thermography and electronic speckle pattern interferometry (ESPI)

Peter Meinlschmidt; Thorsten Bothe; Klaus D. Hinsch; Lutz Mehlhorn

doi:10.1117/12.301533

31 March 1998 Nondestructive testing and evaluation of historical monuments using thermography and electronic speckle pattern interferometry (ESPI)

Peter Meinlschmidt, Thorsten Bothe, Klaus D. Hinsch, Lutz Mehlhorn

Author Affiliations +

Proceedings Volume 3396, Nondestructive Evaluation of Materials and Composites II; (1998) https://doi.org/10.1117/12.301533
Event: Non-Destructive Evaluation Techniques for Aging Infrastructure and Manufacturing, 1998, San Antonio, TX, United States

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.

Citation Download Citation

Peter Meinlschmidt, Thorsten Bothe, Klaus D. Hinsch, and Lutz Mehlhorn "Nondestructive testing and evaluation of historical monuments using thermography and electronic speckle pattern interferometry (ESPI)", Proc. SPIE 3396, Nondestructive Evaluation of Materials and Composites II, (31 March 1998); https://doi.org/10.1117/12.301533

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