InfraRed image correlation for non-destructive testing and evaluation of delaminations in glass fibre reinforced polymer materials

Abstract

InfraRed Thermography (IRT) is one of the widely used Non-destructive Testing and Evaluation (NDT&E) method for characterization of fiber reinforced polymers. Among verity of testing methodologies and associated post processing schemes recently proposed pulse compression favorable thermal wave imaging methodologies gain importance due to their merits. This present paper highlights a highly depth resolved Frequency Modulated Thermal Wave Imaging (FMTWI) and its digitized version named as Digitized Frequency Modulated Thermal Wave Imaging (DFMTWI) for identification of subsurface Teflon patches introduced as defects to simulate the delaminations at various layers of GFRP test specimen of various sizes and depths.