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Proceedings Paper

Numerical System For Infrared Scanners And Application To The Subsurface Control Of Materials By Photothermal Radiometry
Author(s): Jean Louis Beaudoin; Etienne Merienne; Raphael Danjoux; Michel Egee
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Paper Abstract

Non-destructive testing (NDT) of materials can be achieved via proper photonic excitation and radiometric monitoring of the induced thermal changes. The theoretical support for this photothermal conversion in bi-layered materials is proposed, single-pulse and periodically modulated fluxes being considered. Some practical proposals are derived concerning the various aims of NDT: coatings thickness measurements, detection of defective bondings or delaminations, measurements of contact resistances between two layers. Measurements performed with a commercially available infra-red scanner and a digital data acquisition and processing system are reported.

Paper Details

Date Published: 1 May 1986
PDF: 8 pages
Proc. SPIE 0590, Infrared Technology and Applications, (1 May 1986); doi: 10.1117/12.951996
Show Author Affiliations
Jean Louis Beaudoin, Faculte des Sciences de Reims (France)
Etienne Merienne, Faculte des Sciences de Reims (France)
Raphael Danjoux, Faculte des Sciences de Reims (France)
Michel Egee, Faculte des Sciences de Reims (France)


Published in SPIE Proceedings Vol. 0590:
Infrared Technology and Applications
Lionel R. Baker; Andre Masson, Editor(s)

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