Pedrini, GiancarloTiziani, Hans J.2011-03-302016-03-312011-03-302016-03-311994349589569http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-62169http://elib.uni-stuttgart.de/handle/11682/4434http://dx.doi.org/10.18419/opus-4417We describe a double-pulse electronic-speckle-interferometry system. Two separate speckle patterns of an object being tested are recorded within a few microseconds with a CCD camera. Their two images are stored in a frame grabber. The fringes obtained from subtraction are quantitatively analyzed by the spatial-carrier phase-shift method. Using three directions of illumination and one direction of observation, one can record at the same time all the information necessary for the reconstruction of the three-dimensional deformation vector. Applications of this system for measuring the rotating objects are discussed for the case for which a derotator needs to be used. Experimental results are presented.eninfo:eu-repo/semantics/openAccessSpeckle-Interferometrie , Schwingung620article