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Proceedings Paper

A Fringe Carrier Technique For Unambiguous Determination Of Holographically Recorded Displacements
Author(s): Paul D. Plotkowski; Yau Y. Hung; Joseph D. Hovanesian; Grant Gerhart
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Paper Abstract

This paper presents a new technique which eliminates the ambiguity in holographic fringe interpretation. The technique is based upon generating a high density linear phase carrier. Introduction of the carrier results in the formation of a fringe pattern which has mono-tonically increasing fringe orders. Any deformation of the object under study produces a corresponding perturbation of the carrier pattern. If the carrier dominates, the perturbed pattern continues to have monotonically increasing fringe orders and thus allows the fringe order to be determined at any point without ambiguity. The phase change due to deformation alone is obtained by subtracting the known linear carrier from the modulated fringe pattern. Elimination of fringe ambiguity will pave the way for automatic data acquisition in holographic interferometry.

Paper Details

Date Published: 12 June 1985
PDF: 5 pages
Proc. SPIE 0523, Applications of Holography, (12 June 1985); doi: 10.1117/12.946278
Show Author Affiliations
Paul D. Plotkowski, GMI Engineering & Management Institute (United States)
Yau Y. Hung, Oakland University (United States)
Joseph D. Hovanesian, Oakland University (United States)
Grant Gerhart, U.S.Tank Automotive Command (United States)

Published in SPIE Proceedings Vol. 0523:
Applications of Holography
Lloyd Huff, Editor(s)

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