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25 August 2009 Accuracy of sampling moiré method
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 737526 (2009)
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
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.
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Yoshiharu Morimoto and Motoharu Fujigaki "Accuracy of sampling moiré method", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 737526 (25 August 2009);

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