Automated shearography for nondestructive evaluation and strain measurement

Y.Y. Hung

doi:10.1117/12.213538

7 July 1995 Automated shearography for nondestructive evaluation and strain measurement

Y.Y. Hung

Proceedings Volume 2455, Nondestructive Evaluation of Aging Aircraft, Airports, Aerospace Hardware, and Materials; (1995) https://doi.org/10.1117/12.213538
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

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.

Citation Download Citation

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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