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Proceedings Paper

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 can 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 automatized by introducing the digital image processing. All of the laborious and subjective procedures required in the conventional analysis such as fringe sign determination, fringe ordering, fringe interpolation are so eliminated that objective, fast and accurate analysis can be made. Some applications for rubber plates are shown.

Paper Details

Date Published: 17 February 1987
PDF: 8 pages
Proc. SPIE 0814, Photomechanics and Speckle Metrology, (17 February 1987); doi: 10.1117/12.941711
Show Author Affiliations
Yoshiharu Morimoto, Osaka University, (Japan)
Yasuyuki Seguchi, Osaka University (Japan)
Toshihiko Higashi, Osaka University (Japan)


Published in SPIE Proceedings Vol. 0814:
Photomechanics and Speckle Metrology
Fu-Pen Chiang, Editor(s)

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