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Understanding the elementary process of desiccation cracks based on large-scale data assimilation

Research Project

Project/Area Number 19K14671
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 13040:Biophysics, chemical physics and soft matter physics-related
Research InstitutionThe University of Tokyo

Principal Investigator

Ito Shin-ichi  東京大学, 地震研究所, 助教 (10756331)

Project Period (FY) 2019-04-01 – 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 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords破壊 / 乾燥亀裂 / 不均一性 / フェーズフィールドモデル / データ同化 / 深層学習 / PINN / PIV
Outline of Research at the Start

水と粉の混合物(ペースト)が乾燥してできる破壊パターンは干上がった水田や水たまりなどで日常的に観測される。乾燥が進む中で、水の蒸発と粉体粒子の再配置に伴って、ペーストの硬さや脆さなどは時間変化するうえに、空間的に不均一になる。この不均一性は亀裂の発展の仕方に強く影響を与えるが、既存の実験技術のみで不均一性を計測することは困難であった。そこで本研究では、乾燥亀裂パターンのシミュレーションモデルと実験計測データを融合する大規模データ同化技術を用いて、空間不均一性を可視化する新規解析技術を創出することで、不均一性と破壊素過程の関係を明らかにする。

Outline of Final Research Achievements

The crack patterns that occur when a mixture of water and powder (paste) dries are commonly observed. As drying progresses, the hardness and brittleness of the paste change over time due to the evaporation of water and the rearrangement of powder particles, becoming spatially non-uniform. This research project developed a large-scale data assimilation technique to integrate simulation models of drying crack patterns and experimentally measured data in order to understand the relationship between heterogeneity and fracture processes through visualisation of such spatial heterogeneity.

Academic Significance and Societal Importance of the Research Achievements

破壊現象は我々にとって身近な現象であり、その予測・制御技術の開発は学術的にも社会的にも大きな意義を持つ。破壊の進展に伴って形成される亀裂パターンは破壊される物質の硬さや脆さなどの空間的に不均一な物性値に大きく依存する。そのようなパターン形成と物性値空間不均一性を定量化することは破壊進展の予測や制御への基礎的な知見となる。本研究は亀裂パターンのシミュレーションと実験計測データを融合する大規模データ同化の枠組みを開発することにより破壊現象の背後にある空間不均一性を評価する技術を創出する基盤研究となる。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (27 results)

All 2022 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (24 results) (of which Int'l Joint Research: 11 results,  Invited: 3 results)

  • [Journal Article] Adjoint-based uncertainty quantification for inhomogeneous friction on a slow-slipping fault2022

    • Author(s)
      Ito Shin-ichi、Kano Masayuki、Nagao Hiromichi
    • Journal Title

      Geophysical Journal International

      Volume: 232 Issue: 1 Pages: 671-683

    • DOI

      10.1093/gji/ggac354

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adjoint-based exact Hessian computation2021

    • Author(s)
      S. Ito, T. Matsuda, and Y. Miyatake
    • Journal Title

      BIT Numerical Mathematics

      Volume: - Issue: 2 Pages: 503-522

    • DOI

      10.1007/s10543-020-00833-0

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phase prediction method for pattern formation in time-dependent Ginzburg-Landau dynamics for kinetic Ising model without a priori assumptions of domain patterns2021

    • Author(s)
      Anzaki, R., S. Ito, H. Nagao, M. Mizumaki, M. Okada, and I. Akai
    • Journal Title

      Physical Review B

      Volume: 103 Issue: 9 Pages: 1-8

    • DOI

      10.1103/physrevb.103.094408

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 収縮亀裂パターンの動的統計則に現れる相転移的性質2022

    • Author(s)
      伊藤伸一, 中原明生, 湯川諭
    • Organizer
      Japan Geoscience Union
    • Related Report
      2022 Annual Research Report
  • [Presentation] Symplectic-adjoint-based Uncertainty Quantification Method for Large-scale Data Assimilation Problems2022

    • Author(s)
      S. Ito, T. Matsuda, and Y. Miyatake
    • Organizer
      Asia oceania geosciences society
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] シンプレクティックアジョイント法に基づくスロースリップ断層面の摩擦不均一性の不確実性評価2022

    • Author(s)
      伊藤伸一, 加納将行, 長尾大道
    • Organizer
      日本地震学会2022年度秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Symplectic-adjoint-based uncertainty quantification method for large-scale data assimilation problems2022

    • Author(s)
      伊藤伸一, 松田孟留, 宮武勇登
    • Organizer
      Japan Geoscience Union
    • Related Report
      2022 Annual Research Report
  • [Presentation] シンプレクティックアジョイント法に基づくスロースリップ断層面上の摩擦空間不均一性の不確実性評価2022

    • Author(s)
      伊藤伸一, 加納将行, 長尾大道
    • Organizer
      Japan Geoscience Union
    • Related Report
      2022 Annual Research Report
  • [Presentation] Adjoint-based Uncertainty Quantification of Frictional Inhomogeneity on Slow-Slipping Fault2021

    • Author(s)
      S. Ito, M. Kano, and H. Nagao
    • Organizer
      AOGS 2021
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 乾燥亀裂パターンの動的統計則に現れる相転移的性質2021

    • Author(s)
      伊藤伸一, 中原明生, 湯川諭
    • Organizer
      日本物理学会 2021年秋季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] シンプレクティックアジョイント法に基づく高精度不確実性評価法2021

    • Author(s)
      伊藤伸一, 松田孟留, 宮武勇登
    • Organizer
      統計関連学会連合大会 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] Adjoint-based uncertainty quantification of frictional inhomogeneity on slow-slipping fault2021

    • Author(s)
      伊藤伸一, 加納将行, 長尾大道
    • Organizer
      JpGU 2021
    • Related Report
      2021 Research-status Report
  • [Presentation] 変分法データ同化に基づく断層すべり面の摩擦特性空間分布の不確実性評価2020

    • Author(s)
      伊藤伸一, 加納将行, 長尾大道
    • Organizer
      統計関連学会連合大会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] Adjoint-based exact Hessian-vector multiplication using symplectic Runge--Kutta methods2020

    • Author(s)
      伊藤伸一, 松田孟留, 宮武勇登
    • Organizer
      固体地球データ同化に関する研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] Uncertainty quantification based on 4DVar data assimilation for massive simulation models2019

    • Author(s)
      S. Ito, M. Kano, and H. Nagao
    • Organizer
      JpGU
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bayesian inference of grain growth prediction via multi-phase-field models2019

    • Author(s)
      S. Ito, H. Nagao, T. Kurokawa, T. Kasuya, and J. Inoue
    • Organizer
      JpGU
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uncertainty quantification for massive simulation models based on a second-order adjoint method2019

    • Author(s)
      S. Ito
    • Organizer
      A3 Soft Matter Workshop 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uncertainty quantification based on 4DVar data assimilation for massive simulation models2019

    • Author(s)
      S. Ito and H. Nagao
    • Organizer
      FSP2019: Frontiers of Statistical Physics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bayesian Inference of Grain Growth Prediction via Multi-Phase-Field Models2019

    • Author(s)
      S. Ito, H. Nagao, T. Kurokawa, T. Kasuya, and J. Inoue
    • Organizer
      AOGS
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uncertainty quantification based on 4DVar data assimilation for massive simulation models2019

    • Author(s)
      S. Ito, M. Kano, and H. Nagao
    • Organizer
      StatSei11
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Detection of dynamic transition in drying crack patterns based on Bayesian model selection2019

    • Author(s)
      S. Ito
    • Organizer
      Seminar of joint research: Royal Society/JSPS collaboration project
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bayesian inference of grain growth prediction via multi-phase-field models2019

    • Author(s)
      S. Ito, H. Nagao, T. Kurokawa, T. Kasuya, and J. Inoue
    • Organizer
      NIMS WEEK 2019 Academic Symposium Poster Session
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Uncertainty quantification for inhomogeneous frictional features in a slow-slipping fault based on a large-scale four-dimensional variational data assimilation2019

    • Author(s)
      S. Ito, M. Kano, and H. Nagao
    • Organizer
      American Geophysical Union(AGU) 2019 Fall Meeting
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 乾燥亀裂パターンの動的スケーリング則と統計的モデリング2019

    • Author(s)
      伊藤伸一
    • Organizer
      日大理工・船橋セミナー
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 乾燥破壊パターンにおける破片サイズ分布のモデル選択2019

    • Author(s)
      伊藤伸一, 中原明生, 湯川諭
    • Organizer
      統計関連学会連合大会
    • Related Report
      2019 Research-status Report
  • [Presentation] 大規模4次元変分法データ同化に基づくスロースリップ断層面における摩擦特性不均一性の不確実性評価2019

    • Author(s)
      伊藤伸一, 加納将行, 長尾大道
    • Organizer
      日本地震学会秋季大会
    • Related Report
      2019 Research-status Report
  • [Presentation] Grain growth prediction based on data assimilation implementing 4DVar on multi-phase-field models2019

    • Author(s)
      S. Ito
    • Organizer
      StatPhys Seminar
    • Related Report
      2019 Research-status Report
    • Invited

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Published: 2019-04-18   Modified: 2024-01-30  

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