Displacement monitoring using distributed macro-strain measurement

DOI

10.2991/icsmim-15.2016.202How to use a DOI?

Keywords

displacement monitoring; distributed macro-strain; long-gauge optical fiber sensor.

Abstract

As a key parameter the displacement is often monitored to assess the structural performance. However, it is not easy to implement the long-term monitoring under traffic loads especially. A new method is proposed to monitor displacement of flexural structures, based on the distributed macro-strain sensing technique. Within this method the distributed macro-strain was first obtained using long-gauge fiber Bragg grating (FBG) sensors. Then the classical displacement analysis theory, namely force method from the principle of virtual work, was applied to calculate the displacemnet. Finally a cantilever beam installed with the proposed long-gauge FBG sensors was subjected to free vibration to implement the verification. The results have verified the high accuracy of displacement measurement with the proposed method as well as high robustness to noise. Considering the other advantages of distributed optical fiber sensing, the proposed method presents broad application propects especially in long-term structural health monitoring (SHM).

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yongsheng Tang
PY  - 2016/01
DA  - 2016/01
TI  - Displacement monitoring using distributed macro-strain measurement
BT  - Proceedings of the 2015 4th International Conference on Sensors, Measurement and Intelligent Materials
PB  - Atlantis Press
SP  - 1103
EP  - 1106
SN  - 2352-538X
UR  - https://doi.org/10.2991/icsmim-15.2016.202
DO  - 10.2991/icsmim-15.2016.202
ID  - Tang2016/01
ER  -