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Proceedings Paper

Dynamic speckle interferometry as a tool of mechanics and nondestructive testing
Author(s): Alexander Petrovich Vladimirov; Denis O. Popov; Dmitry S. Kapustin; Eugenie S. Belskikh; Pavel S. Eremin
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Paper Abstract

A problem on the interaction between coherent radiation and a dynamic medium under deformation is studied on the basis of a model of a three-dimensional diffuser. An expression has been obtained for the function of mutual coherence of the intensity of scattered radiation at two spatial-temporal points of free space and the region of the image of a thin object. Some mechanic-optic effects associated with changes, displacements and interferences of speckle fields resulting from the theory are considered. Results of experiments conducted to verify the theory are given, and new coherent-optic methods of measurement and testing are substantiated. Particularly, consideration is given to speckle displacement along the Z-axis in the deformation of a body in the X- and Y-directions, a method for studying rotary motions of surface areas, a method for revealing pre-fracture regions, a method for determining strains and nondestructive testing based on a new approach to the registration of interference fringe patterns.

Paper Details

Date Published: 22 June 2004
PDF: 11 pages
Proc. SPIE 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 June 2004); doi: 10.1117/12.579583
Show Author Affiliations
Alexander Petrovich Vladimirov, Institute of Engineering Science (Russia)
Denis O. Popov, Institute of Engineering Science (Russia)
Dmitry S. Kapustin, Institute of Engineering Science (Russia)
Eugenie S. Belskikh, Institute of Engineering Science (Russia)
Pavel S. Eremin, Institute of Engineering Science (Russia)

Published in SPIE Proceedings Vol. 5503:
Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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