Application of the speckle technique for three-dimensional deformation measurement

Chen, Zhi-Xin; Liang, Jin; Guo, Cheng; Hu, Hao

doi:doi:10.1117/1.OE.51.1.013604

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Optical Engineering / Volume 51 / Issue 1 / Instrumentation, Measurement, and Metrology

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Application of the speckle technique for three-dimensional deformation measurement

Opt. Eng. 51, 013604 (Jan 31, 2012); http://dx.doi.org/10.1117/1.OE.51.1.013604

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Abstract

References (19)

Zhi-Xin Chen, Jin Liang, Cheng Guo, and Hao Hu

Xi’an Jiaotong University, School of Mechanical Engineering, Xi’an, 710049, China

East China Institute of Technology, Mechanical Electrical Engineering Department, Nanchang 330013, China

In order to obtain more comprehensive three-dimensional (3-D) deformation data, improve the flexibility and precision of 3-D deformation measurement, and describe the real-time displacement of various points in the measurement scope, we researched speckle methods in this field. First, we expounded basic theories of speckle technique and elaborated on several important aspects of 3-D measurement, including camera calibration, images matching, and 3-D coordinate and displacement calculation. Then, we established the relevant mathematical models and developed a corresponding measurement and analysis software, XJTUDIC. Aided with the appropriate hardware devices, this software recorded and analyzed the whole process of tensile deformation. When compared with the results of the simulation analysis using ANSYS, this method achieved a relative error within ±0.75%, demonstrating the reliability, feasibility, and advantage of this method and its corresponding applied software and hardware.

History

Received Nov 22, 2011
Published online Jan 31, 2012

Digital Object Identifier

http://dx.doi.org/10.1117/1.OE.51.1.013604

Citation

Zhi-Xin Chen, Jin Liang, Cheng Guo and Hao Hu, "Application of the speckle technique for three-dimensional deformation measurement", Opt. Eng. 51, 013604 (Jan 31, 2012); http://dx.doi.org/10.1117/1.OE.51.1.013604