Automatic Evaluation Of Young's Fringes Related To The Study Of In-Plane-Deformations By Speckle Techniques

Abstract
Speckle photography is a new technique for measuring e.g. in-plane-deformations of objects. Till now the Young's fringes diffracted from the double-exposure specklegram are in most applications evaluated manually. With the aid of a microprocessor-system data recording is performed via a TV-system and data are processed by an appropriate software. This way object-deformations are evaluated automatically and yield fast and relieable results.