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Optical Engineering

Application Of Moire Analysis Of Strain Using Fourier Transform
Author(s): Yoshiharu Morimoto; Yasuyuki Seguchi; Toshihiko Higashi
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Paper Abstract

By shifting the discrete Fourier spectrum of the image of a deformed grating, we obtain the "complex moire pattern," from which strain distribution is given as the derivatives of the phases of the complex moire fringes. The analysis is completely automated by digital image processing. All of the laborious and subjective procedures required in the conventional analysis such as fringe sign determination, fringe ordering, and fringe interpolation are thus eliminated, permitting objective, fast, and accurate analysis. Some applications for rubber plates are shown.

Paper Details

Date Published: 1 August 1988
PDF: 7 pages
Opt. Eng. 27(8) 278650 doi: 10.1117/12.7976737
Published in: Optical Engineering Volume 27, Issue 8
Show Author Affiliations
Yoshiharu Morimoto, Osaka University (Japan)
Yasuyuki Seguchi, Osaka University (Japan)
Toshihiko Higashi, Kansai Electric Power Company, Inc. (Japan)

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