Proceedings of the International Conference on Education, Management, Commerce and Society

Design and Spectral Properties of a New Displacement Senor based on an FBG Sensor and SMA Actuators

Authors
Jiyun Lu, Kan Bian, Dakai Liang
Corresponding Author
Jiyun Lu
Available Online January 2015.
DOI
10.2991/emcs-15.2015.114How to use a DOI?
Keywords
Displacement sensor; Shape memory alloy; Fiber Bragg grating; Spectrum analysis
Abstract

As an important factor in-service Structure health monitoring (SHM), predictions of displacement become the basis for determining the decrease of modern aircraft and aerospace structural performance. Optical fiber Bragg grating (FBG) sensors are considered an important tool for SHM , however FBG sensors are rarely directly applied to monitor the displacement because of the intrinsic fragility. To overcome such a problem, we propose a novel method for design and curving an FBG sensor using auxiliary flexible driving function of the shape memory alloy (SMA) to monitor the displacement. The FBG sensor is curved slowly to an S shape along with SMA wire. Strain gradient of SMA which is applied by displacement loading is obtained by finite element analysis. By analyzing the spectral simulations, bandwidth of spectrum is increased and the central wavelength is changed. Spectral properties of curved FBG sensor are analyzed by stretch experiments, the results shown that its bandwidth, light intensity of peak and central wavelength are increased and the central wavelength change is linear with displacement. A new sensor based on an FBG sensor and SMA Actuators can be used to monitor displacement with displacement sensitivity of 141pm/mm.

Copyright
© 2015, 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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Volume Title
Proceedings of the International Conference on Education, Management, Commerce and Society
Series
Advances in Social Science, Education and Humanities Research
Publication Date
January 2015
ISBN
978-94-62520-48-6
ISSN
2352-5398
DOI
10.2991/emcs-15.2015.114How to use a DOI?
Copyright
© 2015, 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/).

Cite this article

TY  - CONF
AU  - Jiyun Lu
AU  - Kan Bian
AU  - Dakai Liang
PY  - 2015/01
DA  - 2015/01
TI  - Design and Spectral Properties of a New Displacement Senor based on an FBG Sensor and SMA Actuators
BT  - Proceedings of the International Conference on Education, Management, Commerce and Society
PB  - Atlantis Press
SP  - 562
EP  - 566
SN  - 2352-5398
UR  - https://doi.org/10.2991/emcs-15.2015.114
DO  - 10.2991/emcs-15.2015.114
ID  - Lu2015/01
ER  -