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Mechanical Property of Micro Spring-like Ceramic-fibers

Research Project

Project/Area Number 02650015
Research Category

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

Allocation TypeSingle-year Grants
Research Field Applied materials
Research InstitutionNagasaki University

Principal Investigator

IWANAGA Hiroshi  Nagasaki Univ., Faculty of Liberal Arts ; Prof., 教養部, 教授 (40039772)

Co-Investigator(Kenkyū-buntansha) MOTOJIMA Seiji  Gifu Univ., Faculty of Engineering ; Prof., 工学部, 教授 (80021608)
IWASAKI Takeshi  Nagasaki Univ., Faculty of Liberal Arts ; Prof., 教養部, 教授 (60213279)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1991: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1990: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsTensile test / Tensile strength / Young's modulus / Carbon / Filament / Whisker / 硫酸マグネシウム単繊維 / 引張り強度 / ヤング率の測定法
Research Abstract

A method of measuring tensile strength of a filament with a diameter of Jim order has been devised. The method allows us to measure the tensile load in the range of 20 to 1500mg with an accuracy of about 1 mg under optical-microscope observation. In order to measure the tensile strength, the cross sectional area of the specimen is estimated from a SEM micrograph of the fractured surface taken parallel to the specimen axis. Srtain is calculated by comparing the distance of markers, -i. e. 'tiny whiskers distributed on a specimen, on micrographs taken at each stage of loading. The Young's modulus and the tensile strength of a pitch-based isotropic carbon filament thus obtained were about 60GPa and 85OMPa, respectively.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] M.Fujii H.Iwanaga N.Shibata: "Morphology and Polarity of GaAs needles" J.Crystal Growth. 99. 179-182 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Iwanaga S.Motozima S.Takeuchi: "Amorphous Si_3N_4 whiskers containing a crystalline core" J.Crystal Growth. 100. 271-274 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Iwanaga S.Motojima S.Takeuchi: "Morphology of coiled whiskers of amorphous Si_3N_4 and their mechanical properties" J.Materials Science Letters. 9. 731-734 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Motojima H.Kawaguchi H.Iwanaga: "Growth of regulary coiled carbon filaments by Ni catalyzed pyrolysis of acetylene and their morphology" Applied Physics Letters. 56. 321-323 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Iwanaga T.Yoshiie S.Takeuchi: "Five Types of Inversion Twin in CdS Crystals" Phil,Mag.A. 64. 303-309 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Iwanaga T.Iwasaki S.Takeuchi: "A Method for Tensil Experinents of Veramic Fibers" The American Ceramic Society. 75. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] M. Fujii, H. Iwanaga, N. Shibata: "Morphology and polarity of GaAs needles." J. Crystal Growth. 99. 179-182 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Iwanaga, S. Motojima, S. Takeuchi: "Amorphous Si_3N_4 whiskers containing a crystalline core." J. Crystal Growth. 100. 271-274 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Iwanaga, S. Motojima, S. Takeuchi: "Morphology of coiled whiskers of amorphous Si_4N_3 and their mechanical properties." J. materials Science Letters. 9. 731-734 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Motojima, H. Kawaguchi, H. Iwanaga.: "Growth of regularly coiled carbon filaments by Ni catalyzed pyrolysis of acetylene, and their morphology." Applied Physics Letters. 56. 321-323 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Iwanaga, T. Yoshiie, S. Takeuchi: "Five types of inversion twin in CdS crystals." Phil. Mag. A. 64. 303-309 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Iwanaga, T. Iwasaki, S. Takeuchi: "A method for tensile experiments of ceramic fibers" The American Ceramic Society. 75. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Iwanaga,T.Yoshiie,S.Takeuchi: "Five Types of Inversion Twin in CdS Crystals" Phil.Mag.A. 64. 303-309 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Iwanaga,M.Fujii: "Cleavage Surfaces in Twinned CdTe Crystals" J.Matter,Sci.Lett.10. 975-977 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Motojima,H.Iwanaga: "Preparation of Coiled Carbon Fibers by Acetylene" Carbon. 29. 379-385 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岩永 浩,冷泉 宏二,松波 正: "扇状マグネシウム化合物の形態と特性" 石膏と石灰. 235. 11-15 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 岩永 浩,元島 栖二: "コイル状セラミック・ファイバ-:その構造と物性" 日本物理学会誌. 47. 10-17 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Iwanaga,T.Iwasaki,S.Takeuchi: "A Method for Tensil Experiments of Ceramic Fibers" The American Ceramic Society. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] M.Fujii,H.Iwanaga,N.Shibata: "Morphology and polarity of GaAs needles" J.Crystal Growth. 99. 179-182 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] H.Iwanaga,S.Motojima,S.Takeuchi: "Amorphous Si_3N_4 whiskers containing a crystalline core" J.Crystal Growth. 100. 271-274 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] H.Iwanaga,S.Motojima,S.Takeuchi: "Morphology of coiled whiskers of amorphous Si_3N_4 and their mechanical phoperties" J.Materials Science Letters. 9. 731-734 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Motojima,H.Kawaguchi,H.Iwanaga: "Growth of regulary coiled carbon filaments by Ni catalyzed pyrolysis of acetylene,and their morphology." Applied Physics Letters. 56. 321-323 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岩永 浩,岩崎 武,元島 栖二: "セラミックファイバ-製マイクロばねの引張り試験法" 表面技術. 41. 578-579 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岩永 浩,元島 栖二: "窒化ケイ素ファイバ-の評価" 金属. 7. 90-93 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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