Share Email Print

Proceedings Paper

Embedded fiber Bragg grating strain sensor with enhanced sensitivity
Author(s): Li Xiong; Guozhang Jiang; Yongxing Guo; Shuang Xu
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

In engineering practice, especially in the structural health monitoring (SHM) of civil engineering, the deformation of concrete is usually small, so a strain sensor don’t need a large measuring range but a high sensitivity. This work presents the structural design, measuring and sensitization principle, and full test of an embedded FBG strain sensor for SHM of reinforced concrete. Two capillary steel tubes protected by a stainless steel tube and embedded with each end fiber of a FBG have been proposed, which possesses the capacity of strain sensitization and adjustment. Experimental results show that sensor provides a sensitivity of 4.2 pm/με in measurement range of ±300με, which is 3.5 times than the bare FBG with center wavelength of 1550 nm. Test results also demonstrate that the sensor possesses good repeatability and creep resistance, which is promising for applications in civil engineering.

Paper Details

Date Published: 20 November 2019
PDF: 6 pages
Proc. SPIE 11191, Advanced Sensor Systems and Applications IX, 1119114 (20 November 2019); doi: 10.1117/12.2538084
Show Author Affiliations
Li Xiong, Wuhan Univ. of Science and Technology (China)
Guozhang Jiang, Wuhan Univ. of Science and Technology (China)
Yongxing Guo, Wuhan Univ. of Science and Technology (China)
Shuang Xu, Wuhan Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 11191:
Advanced Sensor Systems and Applications IX
Tiegen Liu; Gang-Ding Peng; Zuyuan He, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?