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Induction thermography: Principle, applications and first steps towards standardization

Paper presented at First QIRT-ASIA Conference on Quantitative InfraRed Thermography, QIRT 2015, 6 - 10 July, 2015, Mamallapuram
: Netzelmann, Udo; Walle, Günter; Lugin, Sergey; Ehlen, Andreas; Bessert, Steffen; Valeske, Bernd

Fulltext urn:nbn:de:0011-n-3495000 (757 KByte PDF)
MD5 Fingerprint: 0ef624bb380587fccd90ebf5687bd767
Created on: 23.7.2015

2015, 9 pp.
Conference on Quantitative InfraRed Thermography (QIRT-Asia) <1, 2015, Mamallapuram>
Presentation, Electronic Publication
Fraunhofer IZFP ()
induction thermography

A survey on theory, characteristic quantities and the experimental technique of induction thermography is given. The induction frequencies range from 1500Hz to 52MHz. Induction thermography is used for surface defect detection in forged parts of ferromagnetic steel. The sensitivity for crack detection is comparable to magnetic particle inspection. Hidden defects in steel can be detected, if necessary by lowering the induction frequency. Defects of fibres were detected in carbon fibre reinforced polymer. In silicon solar cells, cracks were detected with good contrast. A new field is crack detection in railway components like rails and wheels.