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3-dimensional fiber Bragg grating strain and
displacement sensing system based on a cylinder structure |
| Jianhua LUO , Bo LIU , Yuwen LAN , Shuzhong YUAN , Guiyun KAI , Xiaoyi DONG , |
| Institute of Modern
Optics, Key Laboratory of Photoelectric Information Technical Science,
Nankai University; |
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Abstract A novel 3-dimensional fiber Bragg grating (FBG) strain and displacement sensing system based on a cylinder structure was proposed. Three FBGs, fixed in the outer surface of the cylinder at the same level according to a 120° angle interval, were used as sensing elements. In principle, the three FBGs have some fixed relationship when a strain F is put on the cylinder. Based on the principles of physics and mathematics, theoretical derivations and the experimental set-up were shown. According to the experimental results, this sensor could measure the size and angles of the strain or displacement accurately.
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Issue Date: 05 March 2009
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