| Presentation | 2019-05-16 [Poster Presentation] Expansion of circumferential strain measurement of ring structures by Brillouin gain spectrum model fitting into general ring-shaped structures Shota Kitamura, Shusuke Narieda, Hiroshi Naruse, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A method has been proposed for measuring circumferential strain in ring structures by fitting a model of the Brillouin gain spectrum (BGS) to the BGSs observed distributedly in an optical fiber installed around a ring. In this method, Fourier coefficients included in the model to describe the strain to be measured are determined. In this report, this circumferential strain measurement method for the ring is expanded into that for more general ring-shaped structures such as elliptical and square rings. We measured the strain of both the rings under concentrated and distributed loads by simulations, and investigated the strain measurement errors. The strain measurement errors were approximately the same, independent of the applied loads and cross sectional shapes, including the ring investigated previously. These results indicate that the circumferential strain method expanded by us is available for general ring-shaped structures. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical fiber sensing / Brillouin gain spectrum / annular structure / load distribution / strain measurement / error / simulation |
| Paper # | OFT2019-3 |
| Date of Issue | 2019-05-09 (OFT) |
| Conference Information | |
| Committee | OFT |
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| Conference Date | 2019/5/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Ｉ-site NANBA |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Fumihiko Ito(Shimane Univ.) |
| Vice Chair | |
| Secretary | (Furukawa Electric) |
| Assistant | Hiroshi Watanabe(NTT) / Masateru Tadakuma(Furukawa Electric) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Expansion of circumferential strain measurement of ring structures by Brillouin gain spectrum model fitting into general ring-shaped structures |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber sensing |
| Keyword(2) | Brillouin gain spectrum |
| Keyword(3) | annular structure |
| Keyword(4) | load distribution |
| Keyword(5) | strain measurement |
| Keyword(6) | error |
| Keyword(7) | simulation |
| 1st Author's Name | Shota Kitamura |
| 1st Author's Affiliation | Mie University(Mie Univ) |
| 2nd Author's Name | Shusuke Narieda |
| 2nd Author's Affiliation | Mie University(Mie Univ) |
| 3rd Author's Name | Hiroshi Naruse |
| 3rd Author's Affiliation | Mie University(Mie Univ) |
| Date | 2019-05-16 |
| Paper # | OFT2019-3 |
| Volume (vol) | vol.119 |
| Number (no) | OFT-33 |
| Page | pp.pp.11-16(OFT), |
| #Pages | 6 |
| Date of Issue | 2019-05-09 (OFT) |