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Proceedings Paper

Quantitative Analysis Of Holographic Fringes
Author(s): Amanullah Khan; Ryszard J. Pryputniewicz
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Paper Abstract

This presentation deals with theoretical and experimental analysis of holographic fringe patterns. More specifically, double-exposure holograms of a cylinder undergoing internal pressure changes were recorded for a known illumination and observation geometry. The experimental results obtained from holograms were compared with theoretically predicted fringe patterns. The prediction of the fringe patterns was achieved using a theoretical model, based on the fringe vector theory of holographic analysis. This model was developed specially for analysis of the fringe patterns as a function of object surface shape, its loading conditions, as well as illumination and observation geometry. The model was tested, using computer simulation, under a number of different loading conditions and recording/reconstruction geometries. In these computer tests, only one quarter of the cylinder was considered because of the symmetry of the obiect. The computer simulated results show the effect that changes in hologram illumination and observation directions, for a given loading condition, have on the appearance of the fringe patterns. The correlation between the experimentally observed fringe patterns and those predicted theoretically is good.

Paper Details

Date Published: 10 September 1987
PDF: 5 pages
Proc. SPIE 0746, Industrial Laser Interferometry, (10 September 1987); doi: 10.1117/12.939767
Show Author Affiliations
Amanullah Khan, Digital Equipment Corporation (United States)
Ryszard J. Pryputniewicz, Worcester Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 0746:
Industrial Laser Interferometry
Ryszard J. Pryputniewicz, Editor(s)

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