An objective comparison of three different thermal non-destructive evaluation (NDE) techniques - pulsed thermography (PT), lock-in (LI) thermography, and frequency modulated thermal wave imaging (FMTWI), has been carried out on a CFRP sample. The matched energy comparison shows that on the basis of computed SNR, the shallow defects are better detected by PT, while deeper defects are detected equally by all techniques. © 2012 American Institute of Physics.

Suneet Tuli

Electrical Engineering

(SoE) School of Engineering

K. Chatterjee

S.G. Pickering

D.P. Almond

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Shiv Nadar University

An objective comparison of pulsed, lock-in, and frequency modulated thermalwave imaging

AIP Conference Proceedings

An objective comparison of pulsed, lock-in, and frequency modulated thermal wave imaging