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FUNDAMENTAL STUDY ON REMOTE MONITORING OF SHIP STRUCTURES BY USING FIBER-OPTIC SENSORS

Research Project

Project/Area Number 10450376
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section一般
Research Field 船舶工学
Research InstitutionTHE UNIVERSITY OF TOKYO

Principal Investigator

KIMPARA Isao  THE UNIVERSITY OF TOKYO, DEPT.OF ENVIRONMENTAL AND OCEANENGNG, PROFESSOR, 大学院・工学系研究科, 教授 (50011101)

Co-Investigator(Kenkyū-buntansha) OHSAWA Isamu  THE UNIVERSITY OF TOKYO, DEPT.OF ENVIRONMENTAL AND OCEANENGNG, RESEARCHER, 大学院・工学系研究科, 助手 (00143389)
KAGEYAMA Kazuro  THE UNIVERSITY OF TOKYO, DETP.OF ENVIRONMENTAL AND OCEANENGNG, PROFESSOR, 大学院・工学系研究科, 教授 (50214276)
鈴木 敏夫  東京大学, 大学院・工学系研究科, 助手 (20010895)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥11,500,000 (Direct Cost: ¥11,500,000)
Fiscal Year 2000: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1999: ¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 1998: ¥7,100,000 (Direct Cost: ¥7,100,000)
KeywordsHealth Monitoring / Smart Structure / Fiber-Optic Sensor / FLDV / FBG / BOTDR / Composite Materials / Ship Structure / リモートモニタリング / 構造安全性 / ひずみ計測 / 光ファイバセンサ / AE計測 / 海水環境 / 耐久性
Research Abstract

Ships and offshore structures are occasionally damaged by rough waves and strong winds. It is not easy to estimate loads of waves and winds to the marine structure because of the statistical feature of oceanographic phenomena. Landing and collision of ships might result in severe marine pollution. Prevention of serious damage of the marine structures might be achieved by monitoring the loading condition and by inspecting the structural integrity. The concept of smart structures with fiber-optic sensor network can be applied to the marine structures.
There are plenty of marine structures in huge dimensions, for example, overall length of very large crude carrier (VLCC) exceeds 200 m. Displacement sensor with long gauge length is suitable for global uderstanding of structural ship behavior. New long gauge length sensor, which has simple sensor head and achieves high sensitivity, should be developed for smart marine structure. A fiber-optic Laser-Doppler vibrometer (FLDV) sensor has been proposed as the alternative sensor in the present study. In the present study, applicability of the fiber-optic Laser-Doppler sensor to ship structures is discussed.
Fiber Bragg Grating (FBG) was applied as quasi-distributed strain sensor and accuracy and stability of sensing function was investigated and applied to model specimen subjected to flexural load. International America's Cup Class (IACC) yachts are specific boats whose most components made of carbon fiber reinforced plastic (CFRP) and that are regulated by the IACC rule. A Brillouin optical time domain reflectometer (BOTDR) is a fiber optic distributed sensor that can measure strain and temperature along an optical fiber. We equipped IACC yachts that were the Japanese entry in America's Cup 2000 with these sensors. Strain distributions of the yachts measured with BOTDR were used for structural health monitoring and assessments of the structural integrity were continued during races.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] K.kageyama,I.Kimpara,T.Suzuki,I.Ohsawa,H.Murayama and K.Ito.: "Smart marine structures : an approach to the monitoring of ship structures with fiber-optic sensors"Smart Materials and Structures. 472-478 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 村山英晶,金原勲,影山和郎,鈴木敏夫,大澤勇,金井誠: "スマートストラクチャ概念の船体構造への適用に関する基礎研究-第3報 実海域における光ファイバひずみセンサによる船体構造モニタリング"日本造船学会論文集. Vol.184. 517-526 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Murayama,K.Kageyama,I.Kimpara: "A.Shimada and H.Nuruse, "Healthmonitoring of large composite structures by using fiber optic distributed strain sensors-experiences at America's Cup 2000"Journal of Advanecd Science. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kageyama,H.Murayama,I.Kimpara,A.Shimada,H.Naruse,K.Uzawa and G.Kimura: "Health Monitoring of large Composite Marine Structures by Using Fiber-Optic Distributed Sensors"Materials Science International STP. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.kageyama, I.Kimpara, T.Suzuki, I.Ohsawa, H.Murayama and K.Ito: "Smart marine structures : an approach to the monitoring of ship structures with fiber-optic sensors"Smart Materials and Structures. 7. 472-478 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Murayama, I.Kimpara, K.Kageyama, T.Suzuki, I.Ohsawa, M.Kanai: "Fundamental Study on Smart Structure Approach to Marine Structure - Part3, Monitoring Structural Integrity of a Ship using Fiber Optic Strain Sensors in Field Test""Journal of the Society of Naval Architects of Japan. No.184. 517-526 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Murayama, K.Kageyama, I.Kimpara, A.Shimada and H.Nuruse: "Healthmonitoring of large composite structures by using fiber optic distributed strain sensors -experiences at America's Cup 2000-"Journal of Advanecd Science. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Kageyama, H.Murayama, I.Kimpara, A.Shimada, H.Naruse, K.Uzawa and G.Kimura: "Health Monitoring of large Composite Marine Structures by Using Fiber-Optic Distributed Sensors"Materials Science International STP. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] H.Murayama,K.Kageyama,I.Kimpara,A.Shimada et al. : "Healthmonitoring of large composite structures by using fiber optic distributed strain sensors -experiences at America's Cup 2000"Journal of Advanecd Science.

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kageyama,H.Murayama,I.Kimpara,A.Shimada,H.Naruse,K.Uzawa and G.Kimura: "Health Monitoring of large Composite Marine Structures by Using Fiber-Optic Distributed Sensors"Materials Science International STP.

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Kageyama et al.: "AE Detection in Composite Materials with Fiber-Optic Laser-Doppler Vibrometer"Proc 2nd Japan-France Seminar on Intelligent Materials and Structures. p.113-p.116 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] I.Kimpara et al.: "Application of Fiber Optic Sensors to Detecting Acoustic Emission in Composite Materials"First Asian and Australasian Conference on composite Materials,Extended Absracts. Vol.2. p631-1-p.631-4 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] 村山 英晶 他: "スマートストラクチャ概念の船体構造への適用に関する基礎研究(第3報)"日本造船学会論文集. 第184号. p.517-p.526 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] 影山 和郎 他: "弾性波伝ぱ計測によるFLDVセンサの基本特性評価"日本機械学会1999年度年次大会講演論文集(I). p.299-p.300 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 大澤 勇 他: "光ファイバセンサを用いた複合材料のAE検出の試み"第12回アコースティック・エッミション総合コンファレンス論文集. p.13-p.18 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H.Murayama et al.: "Structual health monitoring of IACC yachts using fiber optic distributed strain sensors : a technical challenge for America's cup 2000"SPIE's 7th Ann.Intern.Sympos on Smart Structures and Materials. (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Kageyama et al.: "Smart marine structures:an approach to the monitoring of ship sructures with fiber-optic sensors" Smart Materials Structures. 7. 472-478 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kageyama et al.: "Health monitoring of ship structures with fiber-optic sensors" Proceeding 4th European and 2nd MIMR Conference. 457-464 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Kageyama et al.: "AE Detection in Composite Materials with Fiber-Optic Laser-Doppler Vibrometer" Proc.2nd Japan-France Seminar on Intelligent Materials and Structures. 113-116 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] I.Kimpara et al.: "Application of Fiber Optic Sensors to Detecting Acoustic Emission in Composite Materials" First.Asian and Australasian Conference on composite Materials, Extended Absracts. Vol.2. 631-1-631-4 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 村山 英晶 他: "スマートストラクチャ概念の船体構造への適用に関する基礎研究(第3報)" 日本造船学会論文集. 第184号. 517-526 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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