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Proceedings Paper

Comparative Method Of Fringe Evaluation For Electronic Speckle Pattern Interferbmetry
Author(s): Boxiang Lu; Xiangyang Yang; Harald Abendroth; Elmar Ficker
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Paper Abstract

A new method is proposed for the fringe evaluation in electronic or digital speckle pattern interferometry (ESPI or DSPI). A series of interferometric speckle patterns, at least three, are recorded and stored during the deformation of the object. The subtraction of each two of the speckle patterns gives the correlation fringes corresponding to the deformation between the two exposures. These correlation patterns are interrelated. The phase differences between each two exposures can be determined by comparing the phase relationship between these correlation fringe patterns. The method is suitable for dynamic or large deformation measurement. The principle of this method is discussed and the computer simulation and experimental results are given.

Paper Details

Date Published: 31 March 1989
PDF: 5 pages
Proc. SPIE 1026, Holography Techniques and Applications, (31 March 1989); doi: 10.1117/12.950251
Show Author Affiliations
Boxiang Lu, Jurid Werke GmbH (F.R. Germany)
Xiangyang Yang, Tsinghua University (China)
Harald Abendroth, Jurid Werke GmbH (F.R. Germany)
Elmar Ficker, Lehrstuhl fur Apparate (F.R. Germany)

Published in SPIE Proceedings Vol. 1026:
Holography Techniques and Applications
Werner P. O. Jueptner, Editor(s)

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