Development of vibration detection system using a fiber-ring laser incorporated with an FBG

• Project/Area Number: 25420745
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Composite materials/Surface and interface engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: TSUDA HIROSHI 国立研究開発法人産業技術総合研究所, 分析計測標準研究部門, 総括研究主幹 (30262108)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 光ファイバセンサ / 振動計測 / 構造物健全性評価 / 加速度センサ / 振動測定 / 超音波 / 非破壊検査

Outline of Final Research Achievements

The present study investigated what influenced on the vibration detect-ability of a fiber-ring laser system incorporated with an FBG as the sensor. Furthermore, the applicability of the measurement system to structural health monitoring was investigated. The study revealed as follows. The system emitted a single-mode laser stably regardless of the grating length of the FBG sensor. The vibration detect-ability of the system declined with the optical fiber length between the FBG and the ring laser. The system was applied to impact load detection of a wind turbine blade and the FBG sensor could detect impact load more sensibly than conventional electric microphones.

Research Products

• [Journal Article] 多点FBGセンサによるひずみとAE同時計測システムの開発（宇宙用固体ロケット複合材複合材構造健全性評価を対象として） (2013)
  • Author(s): 津田 浩,中島 冨男, 佐藤 英一,佐藤 明良, 川合 伸明
  • Journal Title: IHI技報 Volume: 54 Pages: 63-67
  • Peer Reviewed
• [Presentation] FBGマイクロフォンの開発と風力発電ブレードの衝撃検出への適用 (2015)
  • Author(s): 野元 隆彬,荻原慎二,津田 浩
  • Organizer: 安全・安心な社会を築く先進材料・非破壊計測技術シンポジウム
  • Place of Presentation: 沖縄
  • Year and Date: 2015-03-17 – 2015-03-18
• [Presentation] 構造物画像診断技術 (2015)
  • Author(s): 津田 浩,遠山 暢之,李 志遠,王 慶華
  • Organizer: 安全・安心な社会を築く先進材料・非破壊計測技術シンポジウム
  • Place of Presentation: 沖縄
  • Year and Date: 2015-03-17 – 2015-03-18
  • Invited
• [Presentation] Structural health monitoring techniques for composites (2014)
  • Author(s): 津田 浩,遠山 暢之,李 志遠,中島冨男,佐藤 明良,佐藤 英一
  • Organizer: Duracosys 2014
  • Place of Presentation: 東京
  • Year and Date: 2014-09-13 – 2014-09-15
  • Invited
• [Presentation] Easy structural health monitoring technique through visualization (2013)
  • Author(s): 津田 浩
  • Organizer: 8th AIST-TISTR-NSTDA Annual conference
  • Place of Presentation: タイ・バンコク
• [Presentation] 炭素繊維強化複合材料の非破壊検査技術 (2013)
  • Author(s): 津田 浩
  • Organizer: 第13回炭素繊維複合材料利用研究会
  • Place of Presentation: 広島
  • Invited
• [Presentation] Nondestructive Reliability Evaluation for Rocket (2013)
  • Author(s): 志波 光晴、津田 浩、佐藤 英一
  • Organizer: 韓国非破壊検査協会秋季大会
  • Place of Presentation: 韓国・ソウル
  • Invited