Applications of speckle displacement and decorrelation in free-space geometry: sensitivity and accuracy of measurement deformation and displacement in mechanics

Miroslav Hrabovsky; Zdenek Baca; Pavel Horvath

doi:10.1117/12.353085

14 July 1999 Applications of speckle displacement and decorrelation in free-space geometry: sensitivity and accuracy of measurement deformation and displacement in mechanics

Miroslav Hrabovsky, Zdenek Baca, Pavel Horvath

Author Affiliations +

Proceedings Volume 3820, 11th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics; (1999) https://doi.org/10.1117/12.353085
Event: Eleventh Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, 1998, Stara Lesna, Slovakia

Abstract

This paper builds upon the theory of determination of object deformation tensor by means of a method availing of statistical properties of speckle in optically free space geometry. It deals with the analysis of accuracy and sensitivity of a given method from the viewpoint of the theory of errors. The introduction summarizes basic theoretical relations for computational of stress components in the tangent plane of object, together with the manner of their error equations. As it flows from theory, the exact results at stress determination depends crucially upon the geometrical arrangement of the optical system. In the main part of paper, the emphasis on the analysis of accuracy of individual geometrical parameters of assembly are given, with the aim to find an optimized geometry of experimental arrangement. The feasibility of an easy realization in practice and most importantly achieving satisfactory results of measurements are the important criteria. The conclusion presents the results obtained at concrete measurement with the proposed experimental assembly.

Citation Download Citation

Miroslav Hrabovsky, Zdenek Baca, and Pavel Horvath "Applications of speckle displacement and decorrelation in free-space geometry: sensitivity and accuracy of measurement deformation and displacement in mechanics", Proc. SPIE 3820, 11th Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, (14 July 1999); https://doi.org/10.1117/12.353085

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