Abstract:
Among various non-destructive testing and evaluation (NDT&E) methodologies, active infrared thermography (IRT) has
emerged as a viable testing technique for the inspection of materials used in various industrial applications. In recent
years, pulse compression favourable IRT techniques and the associated post-processing schemes have been proposed by
various research groups to enhance the inspection capabilities of existing conventional techniques, as well as to make
experimentation simple and more reliable. This paper exploits a novel complementary coded thermal wave imaging
scheme for NDT&E applications, along with the associated data processing method, to enhance the test resolution and
sensitivity. The proposed scheme has been numerically modelled on a metallic sample in order to test its capabilities for
subsurface defect detection and characterisation.
