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Development of corrosion monitoring system using inverse analysis framework for integrating various type of a priori information

Research Project

Project/Area Number 26420455
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Structural engineering/Earthquake engineering/Maintenance management engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

Amaya Kenji  東京工業大学, 工学院, 教授 (70251642)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords維持管理工学 / 逆問題 / 数値解析 / 腐食モニタリング / 腐食量推定 / 数値シミュレーション / 犠牲陽極 / 電流量推定
Outline of Final Research Achievements

In this research, corrosion monitoring system which identifies corrosion currents on seawater structures from small number of potential measurements using numerical inverse analysis was developed. The new inverse analysis framework was proposed based on the following 4 approaches. 1) Virtual boundary condition is applied when the geometrical information of structures is unknown. 2) Useful ambiguous information based on experience and intuition are taken account with fuzzy reasoning. 3) Bayesian estimation is employed to integrating various type of a priori information. 4) In order to increase the measurement data, currents are impressed actively and potential change is measured.
In order to demonstrate the effectiveness of the developed analysis method, numerical simulation and practical experiment has been performed.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (2 results)

All 2017 2014

All Presentation (2 results)

  • [Presentation] 多様な先験情報の統合フレームワークを適用した逆解析腐食モニタリング手法2017

    • Author(s)
      天谷賢治
    • Organizer
      材料と環境 2017
    • Place of Presentation
      東京
    • Year and Date
      2017-05-24
    • Related Report
      2016 Annual Research Report
  • [Presentation] 腐食モニタリングにおける曖昧な先験情報を活用した逆解析手法.2014

    • Author(s)
      平岡泰明, 天谷賢治, 大西有希.
    • Organizer
      日本機械学会 第27回計算力学講演会
    • Place of Presentation
      盛岡
    • Year and Date
      2014-11-23 – 2014-11-25
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-04-03  

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