Three-Dimensional Continuous Displacement Measurement with Temporal Speckle Pattern Interferometry

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Three-Dimensional Continuous Displacement Measurement with Temporal Speckle Pattern Interferometry

A speckle interferometer which can measure whole field three-dimensional displacements continuously and dynamically has been built. Three different wavelength lasers are used to produce the speckle interferograms of the two in-plane displacements (displacements in the x- and y-direction) and one out-of-plane displacement (displacement in the z-direction), respectively. One color CCD camera is e...

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Speckle interferometry: three-dimensional deformation field measurement with a single interferogram.

An electronic speckle interferometer, arranged for out-of-plane sensitivity and with an off-axis reference beam to produce spatial phase bias, is used for three-dimensional deformation field measurements. The complex amplitude of the object wave is calculated by application of a Fourier-transform method to a single interferogram. The change in phase after object deformation yields the out-of-pl...

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ژورنال

عنوان ژورنال: Sensors

سال: 2016

ISSN: 1424-8220

DOI: 10.3390/s16122020