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OPTIMIZATION OF DOVETALL JOINT STRUCTURE MADE OF CARBON-CARBON COMPOSITE

Research Project

Project/Area Number 09650752
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Composite materials/Physical properties
Research InstitutionSCIENCE UNIVERSITY OF TOKYO

Principal Investigator

KOGA Yasuo  SCIENCE UNIVERSITY OF TOKYO DEPARTMENT OF MATERIALS SCINENCE AND TECHNOLOGY ASSOCIATE PROFESSOR, 基礎工学部, 助教授 (60249935)

Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1998: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1997: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywordscarbon-carbon composite / two dimensional reinforcement / three dimensional reinforcement / dovetail joint / joint strength / shear fracture / fracture criteria / 破壊基準 / ダブテ-ル接合
Research Abstract

In a development study of the air-turbo-ramjet (ATR) engine for a space plane, application of carbon-carbon (C/C) composites play an important role to achieve expected performance of the engine. Above all, dovetail joint structures are one of the key structure to realize the turbine structure using C/C composites. From this point of view, a feasibility study was carried out analytically and experimentally.
Tensile tests were carried out on the simplified dovetail joint model made of two and three dimensionally reinforced C/C composites. A shoulder angle of the dovetail was taken as a parameter to optimize a shape of the dovetail. Finite Element analysis was also carried out for various shoulder angles. Results suggests that fracture of the dovetail joint is controlled by the average shear stress, which imply shear stress concentration on the shoulder is relaxed during failure process of the C/C composites. It is also shown that the dovetail joint made of C/C composites is feasible for the ATR engine.

Report

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

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 向後保雄ほか: "2D C/C複合材料製ダブテール接合の強度及び破壊挙動" 日本複合材料学会誌. 24(6). 222-229 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kogo et.al.: "Application of Carbon-Carbon Composites to Dovetail Joint Structures" Proc.8th Japan-U.S.Conf.Composite Materials. 693-702 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuo Kogo, et al.: "Strength and Fracture behavior of Dovetail Joint Structure Made of 2D Carbon-Carbon Composite" J.Japan Soc.Composite Materials. 24. 222-229 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuo Kogo et al.: "Application of Carbon-Carbon Composites to Dovetail Joint Structures" Proc.8th Japan-U.S.Conf.Composite Materials. 693-702 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 向後保雄 ほか: "2D C/C複合材料製ダブテール接合の強度及び破壊挙動" 日本複合材料科学会誌. 24(6). 222-229 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kogo et.al.: "Application of Carbon-Carbon Composites to Dovetail Joint Structures" Proc.8th Japan-U.S. Corf.Composite Materials. 693-702 (1998)

    • Related Report
      1998 Annual Research Report

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

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