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Proceedings Article

Analysis of stress measurement by means of a speckle decorrelation

[+] Author Affiliations
Pavel Horvath

Joint Lab. of Optics (Czech Republic) and Research Ctr. for Optics (Czech Republic)

Petr Smid

Research Ctr. for Optics (Czech Republic)

Miroslav Hrabovsky

Joint Lab. of Optics (Czech Republic) and Reserch Ctr. for Optics (Czech Republic)

Proc. SPIE 5189, Surface Scattering and Diffraction III, 174 (October 17, 2003); doi:10.1117/12.507289
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From Conference Volume 5189

  • Surface Scattering and Diffraction III
  • Zu-Han Gu; Alexei A. Maradudin
  • San Diego, California, USA | August 03, 2003

abstract

The paper analyzes measurement of stress by means of the method so-called speckle pattern decorrelation. This relatively new and easy realizable method for the non-contact measurement of the small deformation tensor components of an elementary area of the object surface using the statistical properties of speckle field was firstly studied by I. Yamaguchi and later by the authors of this paper, too. At first, the general description of the presented method is briefly referred and the fundamental equations are derived both for the case of optically free space and image field. Then some possible experimental arrangements for the measurement of the deformation component (specific elongation) on an investigated object rough surface are designed and analyzed from the point of view sensitivity and range of measurement. Finally, some achieved experimental results are also noticed.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Pavel Horvath ; Petr Smid and Miroslav Hrabovsky
"Analysis of stress measurement by means of a speckle decorrelation", Proc. SPIE 5189, Surface Scattering and Diffraction III, 174 (October 17, 2003); doi:10.1117/12.507289; http://dx.doi.org/10.1117/12.507289


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