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Mesomechanics of nucleation and propagation of small fatigue cracks in metal matrix composites

Research Project

Project/Area Number 09450047
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

TANAKA Keisuke  Nagoya University, Mechanical Engineering, Professor, 工学研究科, 教授 (80026244)

Co-Investigator(Kenkyū-buntansha) TANAKA Hiroshi  Nagoya University, Res. Center for Adv. Wast and Emis. Manage., Assistant Professor, 難処理人工物研究センター, 講師 (80236629)
AKINIWA Yoshiaki  Nagoya University, Mechanical Engineering, Associate Professor, 工学研究科, 助教授 (00212431)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥10,900,000 (Direct Cost: ¥10,900,000)
Fiscal Year 1999: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1998: ¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 1997: ¥4,900,000 (Direct Cost: ¥4,900,000)
KeywordsMetal matrix Composite / Fatigue / Crack propagation / Fracture mechanics / Residual stress / Mesomechanics / Crack closure / Small crack / き裂伝ば
Research Abstract

1. A new system for the fatigue tests of metal matrix composites in a scanning electron microscope was developed to conduct in-situ observation of initiation and propagation of small fatigue cracks.
2. The stress intensity factor for a crack interacting with particles was determined by the finite element method, and used for the prediction of the crack propagation direction and the rate.
3. The threshold condition of small fatigue crack propagation was given by the emission of a dislocation from the crack tip or the dislocation annihilation. The propagation behavior of a microstructurally small crack interacting with the grain boundaries was modeled on the basis of continuously distributed dislocation theory combined with the crack closure model. The propagation condition of mechanically small cracks was given by the resistance curve method.
4. The published data on the fatigue limit, the threshold stress intensity factor and the effective threshold stress intensity factor of aluminum alloys reinforced and unreinforced by silicon carbide particles or whiskers were correlated to the tensile properties of materials. The reinforcement influenced the tensile strength and also the fatigue properties of materials.

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Y. Akiniwa: "Propagation Behavior of Small Fatigue Cracks in SiCp/Al204 Composites"Proc. Int. Conf. Materials and Mechanics '97 ICM&M'97. 661-666 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 秋庭義明: "SiCp/Al2024複合材料の微小疲労き裂伝ぱに及ぼす予ひずみの影響"材料. 47・3. 279-286 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Akiniwa: "Propagation Behavior of Small Fatigue Cracks Interacting with Particles"Proc. IMMM '97. 303-308 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Shimizu: "In Situ Observation of Fatigue Crack Initiation and Propagation Behavior of SiC Particulate Reinforced Aluminum Alloy"Proc. ACCM-1. 721-1-721-4 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Tanaka: "Mechanics of Small Fatigue Crack Propagation"Small Fatigue Cracks : Mechanics, Mechanisms and Applications, Elsevier Science Ltd.. 59-71 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Tanaka: "Fatigue Thresholds of Discontuously Reinforced Aluminum Alloys"Proc. 7th Int. Fatigue Congress Fatigue '99. 3. 1449-1456 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Akiniwa and K. Tanaka: "Propagation Behavior of Small Fatigue Cracks in SiCp/Al2024 Composites"Proc. Int. Conf. Materials and Mechanics '97, ICM&M'97. 661-666 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Akiniwa, K. Tanaka, K. Shimizu and T. Hagiwara: "Effect of Prestrain on Fatigue Crack Initiation and Propagation in SiCp/Al2024 Composites"J. Soci. of Mater. Sci. Jpn. 47-3. 279-286 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Y. Akiniwa, K. Tanaka and K. Shimizu: "Propagation Behavior of Small Fatigue Cracks Interacting with Particles"Proc. 3rd Int. Symp. Microstructures and Mechanical Properties of New Engineering Materials, IMMM'97. 303-308 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Shimizu, Y. Akiniwa and K. Tanaka: "In Situ Observation of Fatigue Crack Initiation and Propagation Behavior of SiC Particulate Reinforced Aluminum Alloy"Proc, 1st Asian-Australasian Conf. Composite Materials. ACCM-1. 721-1-721-4 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Tanaka and Y. Akiniwa: "Mechanics of Small Fatigue Crack Propagation""Small Fatigue Cracks : Mechanics, Mechanisms and Applications"Elsevier Science Ltd.. 59-71 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Tanaka, Y. Akiniwa, and K. Shimizu: "Fatigue Thresholds of Discontinuously Reinforced Aluminum Alloys"Proc. 7th Int. Fatigue Cong., Fatigue '99. 3. 1449-1456 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Tanaka: "Mechanics of Small Fatigue Crack Propagation"Small Fatigue Cracks,Elsevier Science Ltd.. 59-71 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Tanaka: "Fatigue Thresholds of Discontinuously Reinforced Aluminum Alloys"Proc.7th Int.Fatigue Congress Fatigue '99. 3. 1449-1456 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 田中啓介: "炭化ケイ素で強化したアルミニウム合金の疲労限度"日本材料学会,第10回破壊 力学シンポジウム講演論文集. 1-5 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 田中啓介: "ミクロ応力とマイクロ応力" 材料. 47・12. 1301-1307 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Keisuke Tanaka: "Mechanics of Small Fatigue Crack Propagation" Proc.Inter.Conf.Small Fatigue Cracks. (発表予定). (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Keisuke Tanaka: "Fatigue Thresholds of Discontinuously Reinforced Aluminum Alloys" Inter.Conf.Fatigue '99. (発表予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 秋庭 義明: "疲労き裂伝ばシミュレーションによる微視組織的微小き裂伝ば解析" 日本機械学会第48期総会講演会論文集. 53-54 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshiaki Akiniwa: "Initiation and Propagation Behavior of Fatigue Cracks in SiC Particulate Reinforced Aluminum Alloy" Asian Pacific Conf.Fracture and Strength '99. (発表予定). (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 秋庭 義明: "SiCp/Al2024複合材料の微小疲労き裂伝ぱに及ぼす予ひずみの影響" 日本材料学会第46期学術講演会論文集. 7-8 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshiaki Akiniwa: "Propagation Behavior of Small Fatigue Cracks in SiCp/Al2024 Composites" Proc.Inter.Conf.Materials & Mechanics. 661-666 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshiaki Akiniwa: "Propagation Behavior of Small Fatigue Cracks Interacting with Particles in MMC" The 3rd inter.Symp.Microstructure Mech.Prop.Engng Materials.67-67 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 清水 憲一: "SiC粒子強化アルミニウム合金の疲労き裂伝ぱ挙動に及ぼす粒子含有量と粒径の影響" 日本材料学会第9回破壊力学シンポジウム講演論文集. 240-244 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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