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7 July 1995 Automated shearography for nondestructive evaluation and strain measurement
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Abstract
Shearography is equivalent to a full-field strain gage which reveals flaws in materials by looking at flaw-induced strain anomalies which are translated into anomalies in the fringe pattern. This paper presents a technique that allows the phase distribution in shearographic fringe patterns to be automatically and precisely determined, thus eliminating the human interpretation of fringe patterns. Applications of the technique for automated nondestructive evaluation and strain measurement are demonstrated.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Y.Y. Hung "Automated shearography for nondestructive evaluation and strain measurement", Proc. SPIE 2455, Nondestructive Evaluation of Aging Aircraft, Airports, Aerospace Hardware, and Materials, (7 July 1995); https://doi.org/10.1117/12.213538
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