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Proceedings Paper

Accuracy of sampling moiré method
Author(s): Yoshiharu Morimoto; Motoharu Fujigaki
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Paper Abstract

Recently the authors developed sampling moiré method which analyzes the phase distribution of one image of a moiré fringe pattern. The captured image is analyzed by performing easy image processing, i.e., thinning-out and linear interpolation, to obtain the multiple phase-shifted moiré patterns. Then, the phase distribution of the moiré pattern can be calculated using phase-shifting technique. The accuracy of the phase analysis is high because the phase is analyzed with a phase-shifting method. The accuracy is checked using simulation and experiment by changing several factors. An application of the sampling moiré method applied to deflection measurement of a metal cantilever beam is performed. The average error of the deflection measurement is less than 1/500 of the grating pitch.

Paper Details

Date Published: 25 August 2009
PDF: 6 pages
Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737526 (25 August 2009); doi: 10.1117/12.839206
Show Author Affiliations
Yoshiharu Morimoto, Wakayama Univ. (Japan)
Motoharu Fujigaki, Wakayama Univ. (Japan)


Published in SPIE Proceedings Vol. 7375:
ICEM 2008: International Conference on Experimental Mechanics 2008
Xiaoyuan He; Huimin Xie; YiLan Kang, Editor(s)

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