Damage Detection Based on Pulsed Thermography
A reference-free pulsed thermography method was developed to quantitatively estimate the flat-bottom holes and delamination in plate-like structures, which supressed the effect of non-uniform heating obviously.
The defect location and size can be identified by the differential curve of thermal contrast.

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Read the full article(s):
1. B. Li, L. Ye, E. Li, D. Shou, Z. Li and L. Chang. Gapped smoothing algorithm applied to defect identification using pulsed thermography, Nondestructive Testing and Evaluation 30 (2015): 171-195.