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Moiré-fringe interpolation and multiplication by fringe shifting

Paper presents a simple mechanical way to interpolate and multiply moiré fringes by fringe shifting

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Abstract

A simple technique of shifting the master grating to increase the sensitivity of moiré measurements is proposed. Details of the technique are described and an application of multiplication by three of a 1000-lines/in. grating is given. It is believed that multiplication by five should be obtainable.

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Chiang, FP., Parks, V.J. & Durelli, A.J. Moiré-fringe interpolation and multiplication by fringe shifting. Experimental Mechanics 8, 554–560 (1968). https://doi.org/10.1007/BF02327518

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  • DOI: https://doi.org/10.1007/BF02327518

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