Abstract:
Infrared thermography plays a vital role in the thermal non-destructive
testing and evaluation (TNDT) due to its merits such as whole-field,
remote and quantitative defect detection capabilities. Among the
various TNDT methods, recently proposed, pulse compression favourable
thermal wave imaging gained its importance due to its merits in
terms of defect detection sensitivity and resolution. This Letter
attempts to compare different post-processing schemes to compare
their sub-surface defect detection capabilities for a glass fibre
reinforced polymer test sample. Results obtained clearly show defect
detection probability of the matched filter-based post-processing
approaches are far superior to that of the conventional frequency
domain phase approach.
