Publication

Abstract : Quadratic frequency modulated thermal wave imaging (QFMTWI) is gaining interest for active infrared nondestructive testing due to its depth resolution capability. Spectral reshaping of obtained thermal response through multiplying with a Gaussian window is gaining interest to study the variations of thermal response and in time and frequency domain. In present article, an analysis on the performance of Bartlett window on thermal response obtained from a carbon fiber reinforced polymer specimen excited by quadratic frequency modulated heat flux. The analysis is carried out by applying various post processing techniques on raw and windowed thermal response and Signal to noise ratio is taken as performance metric for comparison of results.