Abstract:
This manuscript highlights a novel data processing approach for active infrared non-destructive
testing and evaluation of carbon fibre reinforced polymers (CFRP). This is accomplished by
performing spectral reshaping on a captured pre-processed linear frequency modulated thermal
profile over the specimen. Results obtained from the Gaussian windowed frequency modulated
thermal wave imaging (GWFMTWI) clearly shows better detection capabilities with improved
test resolution and sensitivity. Further multi-transform techniques have been introduced both in
time and frequency in order to test subsurface defect capabilities of the proposed approach.
