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Nondestructive testing of coatings

: Köhler, B.; Bendjus, B.; Vetterlein, T.

Bartos, A.L.; Green, R.E.; Ruud, C.:
Nondestructive characterization of materials VII. Pt.1
Zürich: Trans Tech Publications, 1996
ISBN: 0-87849-729-3
International Symposium on Nondestructive Characterization of Materials <7, 1995, Prag>
Conference Paper
Fraunhofer IZFP ()
coating thickness; thermal scanning microscopy; Thermographie; thermography; ultrasonic C-scan; vibrometer

The paper describes several thermal and elastic wave methods investigated in our institute for their application to test the integrity and estimate the thickness of coatings. Their advantages and disadvantages for special sample types are discussed. The examples discussed cover different coating-substrate material combinations including a model sample with artifical damage as well as "real" samples, e.g. sheets with a typical lacquer for cars