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Proceedings Paper

Research on 2D digital image correlation measurement based on smartphones
Author(s): Botao Xie; Xuefeng Zhao; Jinke Li; Xu Yan; Xingjun Lv
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Paper Abstract

Digital image correlation (DIC) is a non-contact, full-field optical measurement method that has been extensively used in various applications like structural health monitoring, material characterization, high temperature testing etc. However, most of the above applications are used in the laboratory, and rarely employed in the actual structure. This is mainly because of, firstly, DIC instruments are expensive and cannot be afforded by ordinary people. Secondly, the corresponding equipment is complicated to operate and cannot be widely used. The built-in camera of the smartphone is becoming more and more high-definition so that it has brought about an opportunity to solve this problem. From this point of view, this study monitored the deformation of compressive concrete blocks by smartphone and DIC technology, and analyzed the changes of displacement and strain field on the surface of concrete blocks under different loads. The location and shape of cracks in the displacement results were compared with those in the actual image as well. The results show the feasibility of using smartphones to monitor the strain of structures.

Paper Details

Date Published: 1 April 2019
PDF: 5 pages
Proc. SPIE 10972, Health Monitoring of Structural and Biological Systems XIII, 109722F (1 April 2019); doi: 10.1117/12.2515189
Show Author Affiliations
Botao Xie, Dalian Univ. of Technology (China)
Xuefeng Zhao, Dalian Univ. of Technology (China)
Jinke Li, Dalian Univ. of Technology (China)
Xu Yan, Dalian Univ. of Technology (China)
Xingjun Lv, Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 10972:
Health Monitoring of Structural and Biological Systems XIII
Paul Fromme; Zhongqing Su, Editor(s)

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