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Optical Engineering

Synchronous measurement of three-dimensional deformations by multicamera digital speckle patterns interferometry
Author(s): Yonghong Wang; Jianfei Sun; Junrui Li; Xingya Gao; Sijin Wu; Lianxiang Yang
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Paper 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.

Paper Details

Date Published: 1 April 2016
PDF: 9 pages
Opt. Eng. 55(9) 091408 doi: 10.1117/1.OE.55.9.091408
Published in: Optical Engineering Volume 55, Issue 9
Show Author Affiliations
Yonghong Wang, Hefei Univ. of Technology (China)
Jianfei Sun, Hefei Univ. of Technology (China)
Junrui Li, Oakland Univ. (United States)
Xingya Gao, Hefei Univ. of Technology (China)
Sijin Wu, Beijing Information Science & Technology Univ. (China)
Lianxiang Yang, Oakland Univ. (United States)
Hefei Univ. of Technology (China)
Beijing Information Science and Technology Univ. (China)

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