Nondestructive testing of adhesively bonded structures using synchronized pressure stressing

Thomas C. Chatters; Bruno F. Pouet; Sridhar Krishnaswamy

doi:10.1117/12.163847

3 December 1993 Nondestructive testing of adhesively bonded structures using synchronized pressure stressing

Thomas C. Chatters, Bruno F. Pouet, Sridhar Krishnaswamy

Proceedings Volume 2001, Nondestructive Inspection of Aging Aircraft; (1993) https://doi.org/10.1117/12.163847
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Electronic speckle pattern interferometry (ESPI) utilizing a phase-modulation of the object beam and a continuous reference-updating technique is proposed to provide noise reduction in optical NDE methods. Unlike conventional ESPI techniques, this method uses phase modulation between successively subtracted additive speckle interference images. The ability of this technique to work in a turbulent environment is demonstrated, and application to detection of structural defects in adhesively bonded structures, a problem of interest to the NDE community, is shown.

Citation Download Citation

Thomas C. Chatters, Bruno F. Pouet, and Sridhar Krishnaswamy "Nondestructive testing of adhesively bonded structures using synchronized pressure stressing", Proc. SPIE 2001, Nondestructive Inspection of Aging Aircraft, (3 December 1993); https://doi.org/10.1117/12.163847

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