Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
746863 | Optics and Lasers in Engineering | 2007 | 5 Pages |
Abstract
A lockin method which takes into account the contribution of several modes from the Fourier spectrum generated by a heat load following a triangular waveform is used in temporal speckle pattern interferometry (TSPI) for the nondestructive detection of defects. By defining a parameter to quantify defect detectability, it is demonstrated that the use of this technique improves the detection of hidden flaws located in metal plates.
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Authors
Andrés E. Dolinko, Guillermo H. Kaufmann,