P2 - Multiple Flash Thermography for Non-destructive Testing of lightweight components

Event
AMA Conferences 2017
2017-05-30 - 2017-06-01
Nürnberg, Germany
Band
Proceedings IRS² 2017
Chapter
IP - Poster Session
Author(s)
G. Schober, S. Kremling, T. Hochrein - SKZ – German Plastics Center, Würzburg (Germany), D. Hoffmann - Julius-Maximilians-Universität, Würzburg (Germany), A. Stöhr - HENSEL-VISIT GmbH & Co. KG, Würzburg (Germany)
Pages
813 - 817
DOI
10.5162/irs2017/iP2
ISBN
978-3-9816876-4-4
Price
free

Abstract

In the field of non-destructive testing (NDT) active flash thermography is state of the art. There, the test object is heated with a short intense thermal pulse, e.g. by means of powerful flashbulbs, radiant heaters or lasers and the heat wave propagates into the object. Defects influence the heat wave propagation and thus the temperature distribution on the surface of the object. Further developments have been focused on the increase of pulse energy of the excitation sources to enhance the penetration depth and the thermal contrast of defects. However, in the case of lightweight components the higher amount of heat may damage the object's surface. Therefore, multiple flash thermography offers a promising approach for not only increasing the probability of detection of defects, but also minimizing the maximum surface temperature.

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