Special Section on Instrumentation and Techniques for Geometrical and Mechanical Quantity Measurement

Synchronous measurement of three-dimensional deformations by multicamera digital speckle patterns interferometry

[+] Author Affiliations
Yonghong Wang, Jianfei Sun, Xingya Gao

Hefei University of Technology, School of Instrument Science and Opto-electronics Engineering, Hefei, Anhui 230009, China

Junrui Li

Oakland University, Department of Mechanical Engineering, Optical Laboratory, Rochester, Michigan 48309, United States

Sijin Wu

Beijing Information Science and Technology University, Department of Measurement-Control Technology and Instrumentation, Haidian District, Beijing 100192, China

Lianxiang Yang

Hefei University of Technology, School of Instrument Science and Opto-electronics Engineering, Hefei, Anhui 230009, China

Oakland University, Department of Mechanical Engineering, Optical Laboratory, Rochester, Michigan 48309, United States

Beijing Information Science and Technology University, Department of Measurement-Control Technology and Instrumentation, Haidian District, Beijing 100192, China

Opt. Eng. 55(9), 091408 (Apr 01, 2016). doi:10.1117/1.OE.55.9.091408
History: Received January 9, 2016; Accepted March 10, 2016
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Abstract.  We present a spatial phase-shift digital speckle patterns interferometry (SPS-DSPI) system with the capability of measuring three-dimensional (3-D) deformations under a dynamic loading condition simultaneously using multiple cameras. The Fourier transform method is utilized to calculate the phase difference. The consistency of different cameras is achieved using digital image correlation (DIC) technology. Calibration and calculation programs are compiled to make sure each subset on the measuring surface is uniform. SPS-DSPI and DIC techniques are combined to provide a direct measurement of the 3-D deformation of the entire surface area simultaneously. The theory, application result, and validation experiment are presented.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Yonghong Wang ; Jianfei Sun ; Junrui Li ; Xingya Gao ; Sijin Wu, et al.
"Synchronous measurement of three-dimensional deformations by multicamera digital speckle patterns interferometry", Opt. Eng. 55(9), 091408 (Apr 01, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.091408


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