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

Research on clarication of fatigue mechanism in metal matrix composites and evaluation method for its mechanical characteristics

Research Project

Project/Area Number 05650084
Research Category

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

Allocation TypeSingle-year Grants
Research Field Materials/Mechanics of materials
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

NOGUCHI Hiroshi  Kyushu University Faculty of Engineering, Dept.of mechanical science and engineering Associate Professor., 工学部, 助教授 (80164680)

Co-Investigator(Kenkyū-buntansha) AONO Yuuta  The same as the head investigator, Research Associate, 工学部, 助手 (70264075)
ODA Yasuji  The same as the head investigator, Research Associate, 工学部, 助手 (20091340)
NISITANI Hironobu  The same as the head investigator, Professor, 工学部, 教授 (20037708)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1994: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1993: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsMetal Matrix Composites / SiC Whisker / Aluminum Alloy / Fatigue Strength / Fatigue Crack Initiation / Fatigue Crack Propagation / アルミニウ合金 / 金属基複合材料 / ウィスカ / 金属疲労 / 複合材料 / 切欠き
Research Abstract

In this research, rotating-bending and push-pull fatigue tests of the SiC whisker reinforced 6061-T6,2024-T4 and 7057-6T aluminum alloy made by powder metallurgy were carried out to investigate the fatigue mechanism of plain and notched specimens at room temperature. The fatigue mechanisms in three materials were clarified through successive surface observations using the plastic replica method. Obtained results are as follows.
(1) Fatigue strength of all MMC increase and are about as high as the steel.
(2) The fatigue life is consumed in the fatigue propagation life of small crack by 100mum.
(3) All MMC has a notch sensitivity, and the fatigue limit with a blunt notch has a large statistical factor.
(4) It is indicated from (3) andf (4) that the fatigue life of all MMC has a large scatter.
(5) A simple method for predictiction of statistical fatigue life is important.
(6) There is an optimum volume fraction of SiC whisker for each mechanical property, and it is dependent on the characteristics of matrix.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 野口・尾田: "SiCウィスカ強化アルミニウム合金の疲労強度について" 平成7年度日本機械学会材料力学講演会にて講演予定.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Hiroshi NOGUCHI and Yasuji ODA: "Fatigue strength of SiC whisker reinforced aluminum alloy." Preprint of the Japanese Society of Mechanical Engineers Meeting in Morioka. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 野口,尾田: "SiCウィスカ強化アルミニウム合金の疲労強度について" 平成7年度日本機械学会材料力学講演会予定.

    • Related Report
      1994 Annual Research Report
  • [Publications] 野口・西谷・尾田: "金属基複合材料の疲労劣化の機構" 日本材料学会平成6年度総会講演会. 講演予定.

    • Related Report
      1993 Annual Research Report

URL: 

Published: 1993-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi