低周波振動モニタリングのための両端固定支持梁構造ヘテロコア光ファイバ加速度計

カテゴリ: 論文誌(論文単位)

グループ名: 【E】センサ・マイクロマシン部門

発行日: 2023/07/01

タイトル(英語): A Semicircular Curved Hetero-core Fiber Optic Accelerometer for Low-frequency Vibration Monitoring

著者名: 門倉　美幸（創価大学 理工学部），山崎　大志（（株）コアシステムジャパン），葛西　時雄（国立研究開発法人 宇宙航空研究開発機構 航空技術部門），渡辺　一弘（創価大学 理工学部），西山　道子（創価大学 理工学部）

著者名(英語): Miyuki Kadokura (Faculty of Science and Engineering, Soka University), Hiroshi Yamazaki (Core System Japan Company Ltd.), Tokio Kasai (Aviation Techonology Directorate, Japan Aerospace Exploration Agency), Kazuhiro Watanabe (Faculty of Science and Engineering, Soka University), Michiko Nishiyama (Faculty of Science and Engineering, Soka University)

キーワード: ヘテロコア光ファイバ，光ファイバセンサ，加速度計，低周波振動，構造ヘルスモニタリング　　hetero-core structured fiber，optical fiber sensor，accelerometer，low-frequency vibration，structural health monitoring

要約(英語): In this paper, we have proposed a semicircular curved hetero-core optical fiber accelerometer consisting of an optical fiber and a mass for low-frequency vibration monitoring. Experimental results showed that the proposed accelerometer with the mass installed had improved sensitivity in the low-frequency range and that differences in sensitivity occurred depending on the direction of the applied vibration. Sensitivities in the direction of in-plane shear deformation were 4.4×10-1, 1.3×10-1, and 8.1×10-3 dB/g with 2×10-4 kg, 7×10-5 kg, and without mass, respectively. Experimental results showed that heavier mass improved sensitivity in the low-frequency range. Besides, the sensitivity in the out-of-plane bending deformation direction was lower than that in the in-plane shear deformation direction, with a transverse sensitivity of 15 to 25% compared with the in-plane shear deformation sensitivity. In addition, the frequency response characteristics obtained from the FE analysis and experiments revealed a trade-off between sensitivity and measurable frequency range depending on the mass condition.

本誌: 電気学会論文誌E（センサ・マイクロマシン部門誌） Vol.143 No.7 （2023） 特集：第39回「センサ・マイクロマシンと応用システム」シンポジウム受賞論文

本誌掲載ページ: 156-163 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejsmas/143/7/143_156/_article/-char/ja/