Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields
Mastering the strain transfer mechanism in distributed fiber optic (DFO) sensors holds the key to analyzing strain measurement errors from DFO sensing systems. However, the impact of the monitored structure’s strain distribution on the strain transfer mechanism in DFO sensors has often been overlook...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/15/6863 |
| _version_ | 1797585993740582912 |
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| author | Wenbo Du Xing Zheng Bin Shi Mengya Sun Hao Wu Weida Ni Zhenming Zheng Meifeng Niu |
| author_facet | Wenbo Du Xing Zheng Bin Shi Mengya Sun Hao Wu Weida Ni Zhenming Zheng Meifeng Niu |
| author_sort | Wenbo Du |
| collection | DOAJ |
| description | Mastering the strain transfer mechanism in distributed fiber optic (DFO) sensors holds the key to analyzing strain measurement errors from DFO sensing systems. However, the impact of the monitored structure’s strain distribution on the strain transfer mechanism in DFO sensors has often been overlooked in the existing research. To address this issue, a strain transfer model of surface-bonded DFO sensors with multilayered structures was established based on the shear lag theory. The closed-form solutions of the strain transfer coefficient of DFO sensors subjected to uniform, parabolic, single-linear gradient, and bilinear gradient strains were obtained. With a high-accuracy optical frequency-domain reflectometer (OFDR), the theoretical model was validated by laboratory tests. Upon parametric analysis, suggestions were further offered about designing and installing DFO sensors. |
| first_indexed | 2024-03-11T00:16:59Z |
| format | Article |
| id | doaj.art-ef048fa83b444e8b88d21210529ed15a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T00:16:59Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ef048fa83b444e8b88d21210529ed15a2023-11-18T23:35:28ZengMDPI AGSensors1424-82202023-08-012315686310.3390/s23156863Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain FieldsWenbo Du0Xing Zheng1Bin Shi2Mengya Sun3Hao Wu4Weida Ni5Zhenming Zheng6Meifeng Niu7POWERCHINA Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaPOWERCHINA Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, ChinaSchool of Earth Sciences and Engineering, Hohai University, Nanjing 211000, ChinaZhejiang Huadong Geotechnical Investigation & Design Institute Corporation Limited, Hangzhou 310030, ChinaPOWERCHINA Huadong Engineering Corporation Limited, Hangzhou 311122, ChinaZhejiang Huadong Geotechnical Investigation & Design Institute Corporation Limited, Hangzhou 310030, ChinaZhejiang Huadong Geotechnical Investigation & Design Institute Corporation Limited, Hangzhou 310030, ChinaMastering the strain transfer mechanism in distributed fiber optic (DFO) sensors holds the key to analyzing strain measurement errors from DFO sensing systems. However, the impact of the monitored structure’s strain distribution on the strain transfer mechanism in DFO sensors has often been overlooked in the existing research. To address this issue, a strain transfer model of surface-bonded DFO sensors with multilayered structures was established based on the shear lag theory. The closed-form solutions of the strain transfer coefficient of DFO sensors subjected to uniform, parabolic, single-linear gradient, and bilinear gradient strains were obtained. With a high-accuracy optical frequency-domain reflectometer (OFDR), the theoretical model was validated by laboratory tests. Upon parametric analysis, suggestions were further offered about designing and installing DFO sensors.https://www.mdpi.com/1424-8220/23/15/6863strain transferdistributed fiber optic sensorshear lagstrain-sensing cableoptical frequency-domain reflectometerstrain field |
| spellingShingle | Wenbo Du Xing Zheng Bin Shi Mengya Sun Hao Wu Weida Ni Zhenming Zheng Meifeng Niu Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields Sensors strain transfer distributed fiber optic sensor shear lag strain-sensing cable optical frequency-domain reflectometer strain field |
| title | Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields |
| title_full | Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields |
| title_fullStr | Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields |
| title_full_unstemmed | Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields |
| title_short | Strain Transfer Mechanism in Surface-Bonded Distributed Fiber Optic Sensors under Different Strain Fields |
| title_sort | strain transfer mechanism in surface bonded distributed fiber optic sensors under different strain fields |
| topic | strain transfer distributed fiber optic sensor shear lag strain-sensing cable optical frequency-domain reflectometer strain field |
| url | https://www.mdpi.com/1424-8220/23/15/6863 |
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