Method of calculated decorrelation of digital speckle images for investigation of plastic flows
S.N.Polyakov, V.V.Gorbatenko, E.L.Lopaev, and L.B.Zuev
Tomsk
Pages: 85–91
Subsection: OPTICAL INFORMATION TECHNOLOGIES, ELEMENTS, AND SYSTEMS
Abstract
The operation principles and software of optical and optical-television devices intended for detailed quantitative investigation of the processes of plastic flows and fracture of metals and alloys are considered. Data on their resolution, measurement accuracy, and efficiency are presented. Experimental potentialities of the proposed methods used in investigating the plastic deformation localization by specially designed schemes applying decorrelation of two speckle patterns of the deformed solid surface are evaluated. Data on the peculiarities of kinetics of the plastic shaping process, which were obtained by the described methods, are given as examples.
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