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Eddy current pulsed thermography for ballistic impact evaluation in basalt-carbon hybrid composite panels

: Zhang, Hai; Sfarra, Stefano; Osman, Ahmad; Sarasini, Fabrizio; Netzelmann, Udo; Perilli, Stefano; Ibarra-Castanedo, Clemente; Maldague, Xavier P.V.


Applied optics 57 (2018), No.18, pp.D74-D81
ISSN: 0003-6935
ISSN: 1539-4522
ISSN: 1559-128X
Journal Article
Fraunhofer IZFP ()
infrared imaging; thermal imaging; nondestructive testing

In this paper, eddy current pulsed thermography was used to evaluate ballistic impact damages in basalt-carbon hybrid fiber-reinforced polymer composite laminates for the first time, to our knowledge. In particular, different hybrid structures including intercalated stacking and sandwich-like sequences were used. Pulsed phase thermography, wavelet transform, principle component thermography, and partial least-squares thermography were used to process the thermographic data. Ultrasound C-scan testing and X-ray computed tomography were also performed for comparative purposes. Finite element analysis was used for validation. Finally, an analytical and comparative study was conducted based on signal-to-noise ratio analysis.