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Development of Realtime Frasta technique for the Analysis of Fracture Mechanics

Research Project

Project/Area Number 13450042
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionThe University of Tokyo

Principal Investigator

SAKAI Shinsuke  Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (80134469)

Co-Investigator(Kenkyū-buntansha) IZUMI Satoshi  Graduate School of Engineering, Lecturer, 大学院・工学系研究科, 講師 (30322069)
Project Period (FY) 2001 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥16,000,000 (Direct Cost: ¥16,000,000)
Fiscal Year 2002: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2001: ¥13,500,000 (Direct Cost: ¥13,500,000)
Keywordsfractography / scanning electron microscope / topography analysis / Fracture surface / creep fracture / fatigue crack growth / fractography / scanning electron microscope / topography analysis / fracture surface (5creep fractrure) / fatigue crack growth / 電子顕微鏡 / フラスタ解析 / 事故調査 / ストライエーション / 延性破壊
Research Abstract

New realtime FRASTA analysis system was developed by introducing the super-precise position controlled stage, controlling computer and image processing system. Using developed position controlled stage, image for wide range of SEM region can be obtained. For the pair of upper and lower Iracture surface, we made three way of investigation to clarify the fracture mechanics. Firstly, reproducing of fracturing mechanism is the primary purpose. To realize this, the obtained precise image are transferred to the virtual reality system called CABIN and the technique to reproduce the fracture process in it was newly developed. Thus, it became possible for the analyst to feel as if he walks through the fracture surface. Besides, the assistance by joystics makes the analyst far easier to understand the detailed structure of the fracture mechanics. Secondly, we developed new technique to clarify the detailed three dimensional structure of fracture surfaces. We showed that combination of the stereo-matching method with secondary signal integration method enables us the tar more precise analysis, using the advantages of both method. We also developed the visual expression of the three dimensional image to facilitate the observation on internet using VRML language, Thirdly, the new technique for the characterization of fracture surface was developed. It was shown that the discrimination between grain boundary fracture and inter-granular one becomes possible using fractal analysis. Next the technique to identify the striated region m dot by clot bases was developed by applying Wavelet function. Since this method can be applied for the quantitative analysis of area ratio of striated region, it is expected that this technique is extended to the estimation of the applied stress.

Report

(3 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 姜 軍, 酒井 信介: "ステレオマッチング法と二次電子信号積分法を組合わせたSEM破断面三次元測定"日本機械学会論文集. A編,Vol.6. 300-306 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 姜 軍, 酒井 信介, 高野 太刀雄: "VRMLによる破断面の三次元可視化技術"実験力学. Vol.1, No.3. 40-44 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 姜 軍, 酒井 信介: "ステレオマッチング法の改善によるSEM3次元破面解析"材料. Vol.50,No.11. 1176-1180 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 泉 聡志, 橘鷹 伴幸, 原 祥太郎, 酒井 信介: "局所自己アフィンフラクタルによる破壊遷移部の同定"日本機械学会論文集A編. Vol.68,No.667. 456-463 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 山際 謙太, 酒井 信介, 横堀 寿光: "フラクタル解析を用いたTiAl高温域破壊機構の特性化"日本材料強度学会誌. 第35巻3号. 53-60 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Jun Jiang, Shinsuke Sakai: "Stereoscopic Fracture Surface Analysis by SEM Using Advanced Stereo Matching"Material Science Research International. Vol.8, No.1. 32-37 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Jun Jiang, Shinsuke Sakai: "3-Dimensional Measurement of Fracture Surface Using SEM via the Combination of Stereo Matching and Integrating Secondary Electron Intensity(in Japanese)"Trans. JSME, Ser. A. 68,No.666. 300-306 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Jun Jinag, Shinsuke Sakai, and Tachio Takano.: "Three-Dimensional Visualization Technique for Fracture Surface using VRML" (in Japanese)"J. Experimental Mechanics. 1,No.3. 40-44 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Jun Jinag, Shinsuke Saki: "Stereoscopic Fracture Surface Analysis by SEM using Advanced Stereo Matching (in Japanese)"J. Society of Material Science. 50, No.11. 1176-1180 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Satoshi Izumi, Tomoyuki Kittaka, Shotaro Hara, and Shinsuke Sakai: "The Detection of Fracture Transition Point by the Local Self-Affine Fractal(in Japanese)"Trans. JSME, Ser. A. 68, No.657. 456-463 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kenta Yamagiwa, Shinsuke Sakai, and Toshimitsu Yokobori: "Characterization of High-temperature Fracture Mechanics of TiAl Using Fractal Analysis"J. Japanese Society for Strength and Fracture of Materials. 3, No.35. 53-60 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Jun Jiang, Shinsuke Sakai: "Stereoscopic Fracture Surface Analysis by SEM Using Advanced Stereo Matching"Materials Science Research International. 8, No.1. 32-37 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 姜 軍, 酒井信介: "ステレオマッチング法と二次電子信号積分法を組み合わせたSEM破断面三次元測定"日本機械学会論文集A編. Vol.68,No.666. 300-306 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 姜 軍, 酒井信介, 高野太刀雄: "VRMLによる破断面の三次元可視化技術"実験力学. Vol.1,No.3. 40-44 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 姜 軍, 酒井信介: "ステレオマッチング法の改善によるSEM3次元破面解析"材料. Vol.50,No.11. 1176-1180 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 泉聡志, 橘鷹伴幸, 原 祥太郎, 酒井信介: "局所自己アフインフラクタルによる破壊遷移部の同定"日本機械学会論文集A編. Vol.68,No.667. 456-463 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 山際謙太, 酒井信介, 横堀寿光: "フラクタル解析を用いたTiAl高温域破壊機構の特性化"日本材料強度学会誌. 第35巻3号. 53-60 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Jun Jiang, Shinsuke Sakai: "Stereoscopic Fracture Surface Analysis by SEM Using Advanced Stereo Matching"The Society of Materials Science. Vol.8,No.1. 32-37 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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