Orthonormal projection approach for depth-resolvable subsurface analysis in non-stationary thermal wave imaging
Subsurface analysis using infrared imaging makes use of the temperature contrast originating from the perturbed propagation of diffusive thermal waves. Recently-proposed depth-resolvable modalities explore finer subsurface details and provide better depth scanning of the test object. This paper presents the application of a novel random orthonormal basis for detection and for resolving the subsurface anomalies located at various depths inside a carbon fibre-reinforced plastic specimen using recently-introduced quadratic frequency-modulated thermal wave imaging.
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Document Type: Research Article
Publication date: January 1, 2016
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- Official Journal of The British Institute of Non-Destructive Testing - includes original research and devlopment papers, technical and scientific reviews and case studies in the fields of NDT and CM.
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