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- W2912345863 abstract "Infrared thermography (IRT) is extensively used as non-destructive testing and evaluation (NDT&E) technique to inspect and characterize various solid materials and structures. In this paper, an emergent optical thermography NDT&E technique i.e. frequency modulated thermal wave imaging (FMTWI) has been used for the inspection of mild steel sample embedded with artificially constructed flat bottom circular holes of the same diameter at various depth. This article proposes an independent component analysis (ICA) to process the FMTWI image sequence for detecting the subsurface defects of mild steel sample. To evaluate the effectiveness of defect detection capability of the proposed method, the conventional data processing techniques viz. phase analysis, pulse compression and principal component analysis (PCA) have been compared with ICA. The signal-to-noise (SNR) has been considered to characterize and quantify the defect detectability and compared with conventional post-processing techniques to validate the efficiency of the proposed approach. The obtained results provide an insight into the robustness of the ICA approach for defect detection. Furthermore, an active contour model-based object detection technique has been employed for identification, localization, and extraction of the shape of the defects." @default.
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- W2912345863 date "2019-05-01" @default.
- W2912345863 modified "2023-10-05" @default.
- W2912345863 title "An independent component analysis based approach for frequency modulated thermal wave imaging for subsurface defect detection in steel sample" @default.
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- W2912345863 doi "https://doi.org/10.1016/j.infrared.2019.02.006" @default.
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