Monitoring/measurement of out-of-plane vibrations using shearing interferometry and interferometric grating

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Date
2002
Authors
Shakher, Chandra
Prakash, Shashi
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Abstract
In this paper, an application of shear plate interferometry combined with moiré readout to monitor/measure out-of-plane vibrations is presented. Moiré fringes are produced between the fringe pattern from the shear plate and interferometric grating recorded by photographing the interference pattern generated from the shear plate. It is demonstrated that the method can be used to study periodic and non-periodic vibrations.
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Keywords
Out-of-plane vibration measurement, Shearing interferometry, Interferometric grating, Moiré
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