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Optical Measurement Methods

Shearography

Shearography and electronic speckle pattern interferometry (ESPI) are laser-based, optical, full-field and non-contact measurement methods, mainly applied for non-destructive testing (NDT).
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Digital Image Correlation

Digital Image Correlation (DIC) is a non-contact, full-field optical method used to accurately measure shape, deformation, strain and vibrations.
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Videostrobo­scopy

The Videostroboscope is used for the visualization and recording of periodic events such as vibrations and rotations in slow motion – on shakers and test benches, at non-accessible locations, and for large or micro objects.
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