Abstract:
This article highlights the application of pulse
compression favorable Frequency Modulated Thermal Wave
Imaging (FMTWI) technique for testing and evaluation of
Carbon Fibre Reinforced Plastics (CFRP). The concept
of InfraRed Image Correlation (IRIC) has been introduced
to reconstruct the correlation fringes for the pulse compressed data obtained from the matched filter approach
to detect the flat bottom hole defects in a CFRP specimen. Further, comparison has been made with the acquired
phasegrams using frequency and time domain based data
processingapproaches.Obtained results clearly demonstrate
the strengths of the proposed IRIC based post-processing
scheme in providing the spatio-temporal correlation fringes
for thermal Non-Destructive Testing & Evaluation (NDT&E) of CFRP materials.
