• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1999 Fiscal Year Final Research Report Summary

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
KeywordsMetal matrix Composite / Fatigue / Crack propagation / Fracture mechanics / Residual stress / Mesomechanics / Crack closure / Small crack
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.

  • Research Products

    (12 results)

All Other

All Publications (12 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
  • [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
  • [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
  • [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
  • [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
  • [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
  • [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
  • [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
  • [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
  • [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
  • [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
  • [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

URL: 

Published: 2001-10-23  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi