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Deterioration diagnosis of buried pipe using in-plane bending mode vibration

Research Project

Project/Area Number 20K14685
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 20010:Mechanics and mechatronics-related
Research InstitutionTokyo National College of Technology

Principal Investigator

Takata Soichiro  東京工業高等専門学校, 機械工学科, 准教授 (30835517)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords埋設管 / 面内曲げ変形振動モード / 非線形振動 / 振動診断 / IoTセンサー / 水道管老朽化 / 関東ローム層 / 水道管診断 / 円筒殻 / 面内曲げ変形振動 / 埋設 / 非線形
Outline of Research at the Start

高度成長期に敷設された埋設水道管の老朽化が問題となっている.維持管理の効率化が求められるが,埋設環境のため目視検査ができず現状は漏水音調査に基づく事後保全となっている.本研究では,埋設水道管の状態監視保全を実現するため振動診断技術の開発をおこなう.振動診断モードに円筒殻の面内曲げ変形振動モードを採用し,平均管厚推定をおこなう.実際の水道管は埋設環境により,埋設土に由来する地盤非線形弾性が生じる.また,老朽化に伴う腐食により管厚が減少すると,薄肉構造非線形が生じる.本研究では地盤非線形弾性と薄肉構造非線形弾性が生じる円筒殻の振動挙動を明らかし,診断に資する平均管厚推定方式の高精度化に取り組む.

Outline of Final Research Achievements

The purpose is to establish a method for the deterioration diagnosis of buried pipes using the in-plane bending vibration mode of water pipes, in order to improve the maintenance efficiency of water pipes. The eigen frequency of the in-plane bending vibration mode has the characteristics of being linearly proportional to the thickness of the pipe, and is the vibration mode with the highest sensitivity to wall thinning due to corrosion. In this study, research were carried out with the goal of clarifying the vibration phenomenon of the in-plane bending vibration mode of the buried pipe under ground support and providing feedback to the diagnostic method.As a result, it was found that the in-plane bending vibration of the buried pipe represents behaviors such as a hardening spring characteristic and a softening spring characteristic depending on the soil moisture content of the buried soil.
Moreover, the implementation method of diagnosis algorithm to IoT sensor was considered.

Academic Significance and Societal Importance of the Research Achievements

現状,埋設水道管の維持管理は漏水音調査に基づく事後保全方式による更新か更新周期による時間計画保全に頼っており,水道管の更新が追い付いていない.漏水音が生じている場合,時として断水につながるリスクを抱え,住民の生活を脅かす可能性を秘めている.本研究では,埋設管の現状品質を評価する手法を研究開発するものであり,現時点でまだ共用可能な水道アセットを棚卸し,また近い将来に漏水事故につながる水道管を洗い出し,効率的な維持管理に資するものである.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (17 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (12 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results)

  • [Journal Article] Prototyping of vibration-sensing-actuation device to realization of future intelligent infrastructure2023

    • Author(s)
      Soichiro TAKATA, Shuya KUBOTA and Naoko WATANABE
    • Journal Title

      Journal of Advanced Mechanical Design, Systems, and Manufacturing

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vibration-sensing-actuation device for pipe diagnosis using in-plane bending vibration mode2023

    • Author(s)
      Soichiro Takata, Riki Tanahashi, Shuya Kubota, and Naoko Watanabe
    • Journal Title

      Journal of Mechanical and Electrical Intelligent System

      Volume: -

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Application to nonlinear circular ring of nonlinear system identification based on AR time series analysis2022

    • Author(s)
      Soichiro Takata
    • Journal Title

      Journal of Mechanical and Electrical Intelligent System

      Volume: 2 Pages: 1-10

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vibration analysis of in-plane bending mode in coupled cylindrical shell using coupled circular ring model for pipe thickness estimation2021

    • Author(s)
      Takumi Ito , Soichiro Takata
    • Journal Title

      Journal of Mechanical and Electrical Intelligent System

      Volume: 4 Pages: 23-33

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Nonlinear stiffness identification based on AR time series analysis using transient free oscillation2021

    • Author(s)
      Soichiro TAKATA, Mikane Habashi, Susumu Tarao
    • Journal Title

      Journal of Mechanical and Electrical Intelligent System

      Volume: 4 Pages: 26-35

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Proposal of simplified discrimination method for pipe inspection using vibration sensing actuation device2023

    • Author(s)
      Naoko Watanabe, Soichiro Takata
    • Organizer
      The 9th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of high-power vibration actuator systems for water pipe diagnosis2023

    • Author(s)
      Shuya Kubota, Soichiro Takata
    • Organizer
      The 9th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] PROPRSAL OF CONTROL AND SIGNAL PROCESSING METHOD FOR REALIZATION OF PIPE INSPECTION SYSTEM BASED ON RING MODE OF FORCED VIBRATION2022

    • Author(s)
      Naoko WATANABE, Soichiro TAKATA
    • Organizer
      2022 JSME-IIP/ASME-ISPS Joint International Conference on Micromechatronics for Information and Precision Equipment (MIPE2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Vibration-sensing-actuation device for pipe diagnosis using ring vibration mode2022

    • Author(s)
      Soichiro Takata, Riki Tanahashi, Shuya Kubota and Naoko Watanabe
    • Organizer
      Joint Conference of 11th International Science, Social Sciences, Engineering and Energy Conference (I-SEEC 2022) and, 6th International Conference on Technology and Social Science 2022 (ICTSS 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 埋設環境下における円筒殻の面内曲げ変形振動の解析2021

    • Author(s)
      高田 宗一朗
    • Organizer
      日本機械学会 機械力学・計測制御部門講演会 Dynamics and Design Conference 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] 埋設環境下における円筒殻の変位復元力特性の解析と等価粘弾性モデルの提案2021

    • Author(s)
      長谷川 新一,高田 宗一朗
    • Organizer
      日本機械学会 機械力学・計測制御部門 第19回評価・診断に関するシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 接続管を介して白色雑音を励振される円筒殻の面内曲げ変形振動の解析2021

    • Author(s)
      渡辺 那緒子,高田 宗一朗
    • Organizer
      日本機械学会 機械力学・計測制御部門 第19回評価・診断に関するシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] 埋設環境下における円筒殻の面内曲げ変形モードの自由振動の瞬時周波数解析2021

    • Author(s)
      福島 義弘,高田 宗一朗
    • Organizer
      日本機械学会 機械力学・計測制御部門 第19回評価・診断に関するシンポジウム
    • Related Report
      2021 Research-status Report
  • [Presentation] Trial of application to nonlinear ring of nonlinear identification method based on AR time series analysis2021

    • Author(s)
      Soichiro Takata
    • Organizer
      Proceedings of International Conference on Technology and Social Science 2021 (ICTSS 2021) Invited Paper
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 埋設環境下における極薄円筒殻の面内曲げ変形振動の実験2021

    • Author(s)
      阿部 友哉, 高田 宗一朗
    • Organizer
      日本機械学会関東支部 第 27 期総会・講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 内面モルタルを有する円筒殻の振動実験2021

    • Author(s)
      加藤 健太郎, 高田 宗一朗
    • Organizer
      日本機械学会関東支部 第 27 期総会・講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Nonlinear spring constant estimation using Auto-Regressive time series analysis based on instantaneous frequency2020

    • Author(s)
      Soichiro Takata, Mikane Habashi
    • Organizer
      Proceedings of International Conference on Technology and Social Science 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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