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Optical Measurement Methods

Shearography

Shearography and electronic speckle patter interferometry (ESPI) are laser based, optical measurement methods, working full field, and non contact.
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Digital Image Correlation

Digital Image Correlation (DIC) is a non-contact, optical method used to accurately measure surface deformation of an object.
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Videostrobo­scopy

The Videostroboscope is used for visualization and recording of vibrations and rotations in slow-motion → on shaker, test benches, at non-accessible locations, and on large or micro objects.
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