Abstract:
Non-destructive testing and evaluation (NDT&E) plays a vital role in
industrial quality control and structural health monitoring. Among
various NDT&E approaches, infrared thermography plays a crucial
role due to its merits such as fast, remote, safe, and easy to implement
in testing and evaluation of various materials. This Letter presents the
statistical post-processing approach for pulse compression favourable
frequency modulated thermal wave imaging for inspection of mild
steel samples having flat bottom hole defects. Furthermore, a detailed
analysis has been carried out using independent component analysis
and provides insight for choosing the number of independent components and number of eigenvalues to be retained in the whitening
procedure.
