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

被引：22
|
作者：
Wang, Yonghong [1 ]
Sun, Jianfei [1 ]
Li, Junrui [2 ]
Gao, Xingya [1 ]
Wu, Sijin [3 ]
Yang, Lianxiang [1 ,2 ,3 ]
机构：
[1] Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei 230009, Anhui, Peoples R China
[2] Oakland Univ, Dept Mech Engn, Opt Lab, Rochester, MI 48309 USA
[3] Beijing Informat Sci & Technol Univ, Dept Measurement Control Technol & Instrumentat, Beijing 100192, Peoples R China
来源：
OPTICAL ENGINEERING | 2016年 / 55卷 / 09期
基金：
中国国家自然科学基金;
关键词：
digital speckle patterns interferometry; spatial phase-shift; Fourier transform; spatial heterodyne imaging; deformation measurement; digital image correlation;
D O I：
10.1117/1.OE.55.9.091408
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE).
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页数：9
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