Research on 2D digital image correlation measurement based on smartphones

Botao Xie; Xuefeng Zhao; Jinke Li; Xu Yan; Xingjun Lv

doi:10.1117/12.2515189

1 April 2019 Research on 2D digital image correlation measurement based on smartphones

Botao Xie, Xuefeng Zhao, Jinke Li, Xu Yan, Xingjun Lv

Proceedings Volume 10972, Health Monitoring of Structural and Biological Systems XIII; 109722F (2019) https://doi.org/10.1117/12.2515189
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

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.

Citation Download Citation

Botao Xie, Xuefeng Zhao, Jinke Li, Xu Yan, and Xingjun Lv "Research on 2D digital image correlation measurement based on smartphones", Proc. SPIE 10972, Health Monitoring of Structural and Biological Systems XIII, 109722F (1 April 2019); https://doi.org/10.1117/12.2515189

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available