Performance of optical speckle displacement technique near stress concentrators

Leonid I. Muravsky; Olexander M. Sakharuk; Sergiy O. Kostyukevych; Olexander P. Maksymenko; Kateryna V. Kostyukevych

doi:10.1117/12.726434

18 June 2007 Performance of optical speckle displacement technique near-stress concentrators

Leonid I. Muravsky, Olexander M. Sakharuk, Sergiy O. Kostyukevych, Olexander P. Maksymenko, Kateryna V. Kostyukevych

Proceedings Volume 6616, Optical Measurement Systems for Industrial Inspection V; 66163D (2007) https://doi.org/10.1117/12.726434
Event: Optical Metrology, 2007, Munich, Germany

Abstract

The optical speckle-displacement correlation technique was developed to increase the reliability of surface displacement field recovery near stress concentrators. The performance of optical speckle correlators based on joint transform correlator (JTC) architecture and a joint power spectrum nonlinear filtering (median thresholding, adaptive median thresholding, ring median thresholding) is studied by using computer models of these correlators. The design of hybrid joint transform speckle correlator is detailed. Example results of correlation signal using computer models of digital speckle correlation and optical speckle-displacement correlation techniques and created hybrid joint transform speckle correlator setup are described.

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Leonid I. Muravsky, Olexander M. Sakharuk, Sergiy O. Kostyukevych, Olexander P. Maksymenko, and Kateryna V. Kostyukevych "Performance of optical speckle displacement technique near-stress concentrators", Proc. SPIE 6616, Optical Measurement Systems for Industrial Inspection V, 66163D (18 June 2007); https://doi.org/10.1117/12.726434

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