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Proceedings Paper

Nondestructive testing of adhesively bonded structures using synchronized pressure stressing
Author(s): Thomas C. Chatters; Bruno F. Pouet; Sridhar Krishnaswamy
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Paper 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.

Paper Details

Date Published: 3 December 1993
PDF: 12 pages
Proc. SPIE 2001, Nondestructive Inspection of Aging Aircraft, (3 December 1993); doi: 10.1117/12.163847
Show Author Affiliations
Thomas C. Chatters, Northwestern Univ. (United States)
Bruno F. Pouet, Northwestern Univ. (United States)
Sridhar Krishnaswamy, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 2001:
Nondestructive Inspection of Aging Aircraft
Michael T. Valley; Nancy K. Del Grande; Albert S. Kobayashi, Editor(s)

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