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Sustematization Study of Toughening Mechanism in Ceramic-based Composites for Structural Use

Research Project

Project/Area Number 03453077
Research Category

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

Allocation TypeSingle-year Grants
Research Field 無機工業化学・無機材料工学
Research InstitutionKyoto Institute of Technology

Principal Investigator

NISHIDA Toshihiko  Department of Chemistry and Materials Technology, Associate Professor, 工芸学部, 助教授 (30027809)

Co-Investigator(Kenkyū-buntansha) OKAMOTO Yasunori  Department of Chemistry and Materials Technology, Associate professor, 工芸学部, 助教授 (50101259)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥6,000,000 (Direct Cost: ¥6,000,000)
Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1992: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1991: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsCeramics / Composite material / Fracture mechnics / Notched beam / Precrack / Fracture toughness / Crack extension resistance / R-curve / 破壊靱性 / 複合強化 / 破壊じん性 / 破壊エネルギー / 高温強度 / 高靭性 / 破壊エネルギ- / 自己修復
Research Abstract

Main perpose of this project is to establish the universal standerd for evaluation and to systematize the toughening mechanism for structural ceramics and ceramic based composites. As the result of this project, ceramic-based materials can be classified the following three categories : (1) Brittle ceramics ( K_<IC> values of them are less than 5 MPa m^<1/2> ) (2) Toughened ceramics ( K_<IC> values of them are 5-10 MPa m^<1/2> in a general sense, and they almostly shows the some toughening-enhancement mechanisms during the crack extesion ) (3) Fever-reinforced ceramics ( They have microfracture processes accompanied by the main crack extension of fiber-reinforced brittle matrix composites with "weak" interface bonding ) and the following conclusions were presented from our fracture mechanics studies of some ceramics and ceramic-based composites.
The general low of linear-fracture mechanics was applicable for matreials (1) if only the special attention should be paid to the testing. Because the resistance ageinst crack extension in materials (2) is affected by the stress-shielding due to the process zone formed at the crack tip, due to the wake formed along the fracture surface, accurate analysis by non-linear fracture mechanics based on the damage-free crack or notch will be required. For the precise evaluation of mechanical properties for matreials (3), pluralistic analysis under tiesile, compression and shear mode will be indispensable.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (37 results)

All Other

All Publications (37 results)

  • [Publications] 西田俊彦: "予き裂導入試片を用いた構造用セラミックスの破壊靭性評価(第4報)" 日本セラミックス協会学術論文誌. 100. 276-281 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA: "On the Fracture Toughness of Polycrystalline Alumina Measured by SEPB Method" Trans.Mater.Res.Soc.Jpn.12. 185-189 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA: "R-Curve Properties of Alumina Measured by Stable Fracture in Bending" Fracture Mechanics of Ceramics. 9. 277-288 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI: "Intrinsic Fracture Energy of Polycrystalline Silicon Nitride" Phil.Mag.Lett.67. 45-52 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI: "Thermomechanically Induced Embritllement in Hot-Isostatically Pressed Si_3N_4/SiC Composites" J.Mater.Sci.28. 3080-3088 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA: "Effect of Notch-root Radious on the Fracture Toughness of Fine-grained Alumina" J.Am.Ceram.Soc.(発表予定).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 西田俊彦: "構造用セラミックスの新展開" 東レリサーチセンター調査事業部, 300 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 西田俊彦: "セラミックスの評価法" 日本セラミックス協会出版部, 350 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA and I.KAMEYAMA: "Evaluation of Fracture Toughness for Stuructural Ceramics using SEPB Specimen (Part 4)" J.Ceram. Soc. Jpn.100. 276-281 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA and I.KAMEYAMA: "Crack Extension Resistance of an Alumina Polycrystal with Large Grain Size" Proc. 35th Jpn. Congr. Mater. Res.89-93 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA, T.SHIONO and T.NISHIKAWA: "On the Fracture Toughness of Polycrystalline Alumina Measured by SEPB Method" Trans. Mater. Rec. Soc. Jpn. Ed. by S.Smiya. Vol.12. 185-189 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA and I.KAMEYAMA: "R-Curve Properties of Alumina Measured by Stable Fracture Test in Bending" Fracture Mechanics of Ceramics, Ed.by R.C Bradt etal.Vol.9. 277-288 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI, I.TANAKA and T.NISHIDA: "Intrinsic Fracture Energy of Polycrystalline Silicon Nitride" Phil. Mag. Lett.67. (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI, K.NODA, Y.OKAMOTO and T.NISHIDA: "Thermomechanically Induced Embrittlement in Hot-Isostatically Pressed Si_3N_4/SiC Composites" J.Mater. Sci.28. 3080-3088 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI, Y.OKAMOTO and T.NISHIDA: "Subcritical Crack Growth in Polycrystalline Silicon Nitride" Phil. Mag. Letter. 68. 283-288 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.NISHIDA, Y.HANAKI and G.PEZZOTTI: "Effect of Notch-root Radious on the Fracture Toughness of Fine-grained Alumina" J.Am. Ceram. Soc.in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI and T.NISHIDA: "On the Negligible Toughening Achievable by Crack-front Devlection in Ceramic Composites" Proc. 37th Jpn. Congr. Mater. Res.in press.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] G.PEZZOTTI: "Intrinsic Fracture Energy of Polycrystalline Silicon Nitride" Phil.Mag.Lett.67. 45-52 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] G.PEZZOTTI: "Thermomechanically Induced Embrittlement in Hot-Isostatically Pressed Si_3N_4/SiC Composites" J.Mater.Sci.28. 3080-3088 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] G.PEZZOTTI: "Subcritical Crack Growth in Polycrystalline Silicon Nitride" Phil.Mag.Lett.68. 283-288 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.NISHIDA: "Effect of Notch-Root Radious on the Fracture Toughness of Fine-Grained Alumina" J.Am.Ceram.Soc.(発表予定).

    • Related Report
      1993 Annual Research Report
  • [Publications] G.PEZZOTTI: "On the Negligible Toughening Achievable by Crack-Front Deflection in Ceramic Composites" Proc.37th Jpn.Congr.Mater.Res. (発表予定).

    • Related Report
      1993 Annual Research Report
  • [Publications] 西田俊彦(分担): "セラミックスの評価法" 日本セラミックス協会出版部, 300 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Nishida: "An Attempt for Measuring the Crack Extension Resistance of Ceramics by Fractur Test in Bendiug" J.Ceram.Soc.Jpn.100. 1082-1084 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Nishida: "R-Curve Behavior of Alumina Measured by Stable Fracture Test in Bendiug" Fract.Mech.Ceram. 9. 277-288 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 西田 俊彦: "Y-TZPの残留応力誘起相変態" ジルコニアセラミックス. 12. 76-87 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 西田 俊彦: "複合強化型セラミックスの破壊特性評価" 先端技術ハイライト. 114. 5-8 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 西田 俊彦: "構造用セラミックスの新展開" 東レリサーチセンター調査事業部, 321 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 宗官 重行: "セラミックスの変態強化" 内田老鶴圃, 314 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Nishida: "Fracture behavior of carbon fiberーreinfoced silicon nitride ceramic composite in bending" Proc.34th Japan Congr.Mater.Res.34. 57-60 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西田 俊彦: "シェブロンノッチ試片の安定曲げ破壊試験" 材料. 40. 411-415 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西田 俊彦: "予き裂導入試片を用いた構造用セラミックスの破壊靭性評価" 日本セラミックス協会学術論文誌. 100. 276-281 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Nishida: "Crack extension resistance of an alumina polycrystal with large grain size" Proc.35th Japan Congr.Mater.Res.35. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] T.Nishida: "Rーcurve properties of alumina polycrystals measured by stable fracture tests in bending" Fracture Mechanics of Ceramics. 12. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西田 俊彦: "SiCウィスカ-強化Si_3N_4焼結体のR曲線" 日本セラミックス協会学術論文誌.

    • Related Report
      1991 Annual Research Report
  • [Publications] 西田 俊彦: "セラミックス強化複合セラミックス" 産業技術サ-ビスセンタ-, 250 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 西田 俊彦: "セラミックスの機械的性質と微細構造" オ-ム社, 300 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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