Abstract
Superposed holographic interferometers are used to determine in,-plane and out-of-plane displacements of the tested objects. This technique is presented as an assembly of the object surface section and holographic plate in an immediate vicinity to the object. If a hologram is registrated at a metallized grating surface it restores an information peculiar to some optical methods: holographic interferometry, speckle photography, holographic moire and mirror-optical technique. New simple analytical expressions for the interpretation of interference patterns are obtained. Superposed holographic interferometers are used effectively to solve some deformation measurement problems.
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