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Proceedings Paper

Signal characteristics of the surface bonded fiber Bragg grating sensors by bonding length under different load types
Author(s): Hyunseok Kwon; Yurim Park; Pratik Shrestha; Chun-Gon Kim
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Paper Abstract

The surface-bonding method of the fiber Bragg grating(FBG) sensor is easier to handle than embedding method. However surface bonded FBG sensors have the limitation of the signal characteristics being affected by the bonding layer. In this study, the effects of the bonding length on the surface installed FBG sensor signal characteristics under various load types were empirically investigated. To evaluate the stability of the signal characteristics of the FBG sensors, the strain transfer rate and the multiple peaks ratio of the reflected spectrum were calculated and compared. From the experimental results, the strain transfer ratio and multiple peaks ratio varied because of the different strain gradients formed depending on the applied load type. Therefore, it was found that the effective bonding length for respective load types need to be determined to get a stable signal from the surface bonded FBG sensors.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103239H (23 April 2017); doi: 10.1117/12.2267626
Show Author Affiliations
Hyunseok Kwon, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Yurim Park, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Pratik Shrestha, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Chun-Gon Kim, Korea Advanced Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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