A Cross-Dichroic-Prism-Based Multi-Perspective Digital Image Correlation System

被引：8
|
作者：
Dan, Xizuo [1 ,2 ]
Li, Junrui [2 ]
Zhao, Qihan [1 ]
Sun, Fangyuan [1 ]
Wang, Yonghong [1 ]
Yang, Lianxiang [2 ]
机构：
[1] Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Hefei 230009, Anhui, Peoples R China
[2] Oakland Univ, Dept Mech Engn, Rochester, MI 48309 USA
来源：
APPLIED SCIENCES-BASEL | 2019年 / 9卷 / 04期
基金：
中国国家自然科学基金;
关键词：
digital image correlation; multi-perspective; single camera; cross dichroic prism; CAMERA; DIFFRACTION;
D O I：
10.3390/app9040673
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A robust three-perspective digital image correlation (DIC) system based on a cross dichroic prism and single three charge-coupled device (3CCD) color cameras is proposed in this study. Images from three different perspectives are captured by a 3CCD camera using the cross dichroic prism and two planar mirrors. These images are then separated by different CCD channels to perform correlation calculation with an existing multi-camera DIC algorithm. The proposed system is considerably more compact than the conventional multi-camera DIC system. In addition, the proposed system has no loss of spatial resolution compared with the traditional single-camera DIC system. The principle and experimental setup of the proposed system is described in detail, and a series of tests is performed to validate the system. Experimental results show that the proposed system performs well in displacement, morphology, and strain measurement.
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收藏
页数：12
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