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Development of the evaluation method for the fatigue properties of nuclear fusion reactor wall materials using micro specimens.

Research Project

Project/Area Number 02452244
Research Category

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

Allocation TypeSingle-year Grants
Research Field 金属材料(含表面処理・腐食防食)
Research InstitutionTokyo Institute of technology, Precision and Intelligence Laboratory (P&IL)

Principal Investigator

NUNOMURA Shigetomo  Tokyo Institute of Tech., P&IL., Prof., 精密工学研究所, 教授 (60016764)

Co-Investigator(Kenkyū-buntansha) ONO Masashi  Tokyo Institute of Tech., P&IL., former Associate., 精密工学研究所, 助手 (10211145)
KUMAI Shinji  Tokyo Institute of Tech., P&IL., Associate., 精密工学研究所, 助手 (00178055)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1991: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1990: ¥5,200,000 (Direct Cost: ¥5,200,000)
KeywordsFusion reactor materials / Fatigue properties / Micro specimen / Materials testing / Indentation method / Size effect / 寸法効果 / 核融合炉材料
Research Abstract

The fatigue characteristics are of fundamental importance when choosing a structural material, especially when deciding upon the material for the fusion reactor wall where long term safety is of primary importance. It is well known that a metal may fail under imposition of a stress considerably lower than the normal breaking stress, if that stress is applied in a cyclic manner. However, the fatigue properties of highly irradiated wall materials have not been studied in detail. This is primarily due to the shortage of materials which are suitable for such applications. In common type fatigue test, a larger size specimen used to be required compared to other mechanical tests. Nevertheless in the case of fusion reactor wall materials, the limited irradiation space for the specimen requires the use of TEM disk size specimens in mechanical tests to cooperate with safety regulations.
In this research two types of miniature fatigue test method have been developed in response to the requirements of the fusion reactor wall materials development program. It is known that the fatigue strength evaluated by the axial loading test is independent of the specimen size, while that evaluated by the bend test or torsion test is dependent upon the size of specimen. Then new type of gripping system for the axial, tension-tension, fatigue testing of TEM size specimens has been developed. An alignment toot assists to grip the miniature specimen. The miniature tension-tension fatigue test method seems to provide reliable S-N curves for two austenitic stainless steels.
An indentation method has also been developed to determine fatigue properties. A hard steel ball or ceramic ball was used for cyclically loading the specimen and an S-N curve was subsequently obtained. The merit of this method is primarily simple handling. S-N curves obtained from four materials by this indentation method compared well with those obtained from the rotary bend fatigue test employing a standard size specimen.

Report

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

    (30 results)

All Other

All Publications (30 results)

  • [Publications] Shigetomo Nunomura: "Use of Miniaturized Specimen for Mechanical Testing" Proceeding of International Symposium on Engineering Mechanics. 82-90 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yakichi Higo,Shinichi Kazama,Shigetomo Nunomura: "Non-destructive evaluation of materials and structures by the elastic wave transfer function method" Materials Science and Engineering. A164. 327-333 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shinji Kumai,Jianqun Hu,Shigetomo Nunomuta etal.: "Hardness Characteristics in Aged Particulate SiC/A356 Aluminum Alloy Composites" Scripta Metallugica. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Yakichi Higo,Daniel Damri,Shigetomo Nunomura etal: "The Fracture Toughness cChracteristics of Three Dental Composite Resins" Bio-Medical Materials and Engineering. 1. 223-231 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Katsuichi Kumada,Tsugio Iwamoto,Shigetomo Nunomura etal.: "Fracture Toughness Measurement using a Ring Specimen" The Journal of the Japanese Spciety for Dental Materials and Devices. 10. 779-787 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetomo Nunomura,Yoshihiko Oda: "Mixes Mode Fatigue Crack Propagation Test Using Cracked Ring" International Journal of Fatigue and Fracture. (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetomo Nunomura,Shinji Noguchi,Yuichi Okamura etal.: "Small Specimen Test Techniques and Their Applications to Nuclear Reactor Vessel Thermal Annealing and Plant Life ASTM STP"Two Micro Fatigue Test Methods for Irradiated Materials"" American Society for Materials Testing, (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetomo Nunomura,Tohru Nishijima,Yakichi Higo etal.: "Small Specimen Test Techniques and Their Applications to Nuclear Reactor Vessel Thermal Annealing and Plant Life ASTM STP "Tensile Properties Evaluation Using a TEM Disk Size Specimen"" American Society for Materials Testing, (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Nunomura & Y. Oda: "Cracked Ring Specimen for Environmnt Fatigue and Mixed Mode Fatigue Tests" Proc. 4th Int. Conf. on Fatigue. 1. 589-594 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Nunomura: "Use of Miniaturized Specimen for Mechanical Testing" Proceeding of International Symposium on Engineering Mechanics. 82-90 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Higo, S. Kazama & S. Nunomura: "Non-destructive evaluation of materials and structures by the elastic wave transfer function method" Materials Science and Engineering. A164. 327-333 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Y. Higo, D. Damri, S. Nunomura, K. Kumada etal.: "The fracture toughness characteristics of three dental composite resins" Bio-Medical and Engineering. 1, 1. 223-231 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Kumai, J. Hu, Y. Higo & S. Nunomura: "Hardness Characteristics in Aged Particulate SiC/A356 Aluminum Alloy Composites." Scripta Metallugica. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Nunomura, T. Nishijima, Y. Higo & A. Hishinuma: "Tensile Properties Evaluation Using a TEM Disk Size Specimen" Small Specimen Test Techniques and Their Applications ASTM STP. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Nunomura, S. Noguchi, Y. Okamura & S. Jitsukawa: "Two Micro Fatigue Test Methods for Irradiated Materials" Small Specimen Test Techniques and Their Applications ASTM STP. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Nunomura & Y. Oda: "Mixes Mode Fatigue Crack Propagation Test Using Cracked Ring" International Journal of Fatigue and Fracture. (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Shigetomo Nunomura: "Use of Miniaturized Specimen for Mechanical Testing" Proceeding of International Symposium on Engineering Mechanics. 82-90 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shinji Kumai;Jianqun Hu;Shigetomo Nunomura et al.: "Hardness Characteristics in Aged Particulate SiC/A356 Aluminum Alloy Composites" Scripta Metallugica. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Yakichi Higo;Shinichi Kazama;Shigetomo Nunomura: "Nonーdestructive evaluation of materials and structures by the elastic wave transfer function method" Materials Science and Engineering. A164. 327-333 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shigetomo Nunomura;Tohru Nishijima;Yakichi Higo et al.: "Tensile Properties Evaluation Using a TEM Disk Size Specimen" Small Specimen Test Techniques and Their Applications to Nuclear Reactor Vessel Thermal Annealing and Plant Life ASTM STP. 14. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shigetomo Nunomura;Shinji Noguchi;Yuichi Okamura et al.: "Two Micro Fatigue Test Methods for Irradiated Meterials" Small Specimen Test Techniques and Their Applications to Nuclear Reactor Vessel Thermal Annealing and Plant Life ASTM STP. 14. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] Shigetomo Nunomura;Yoshihiko Oda: "Mixes Mode Fatigue Crack Propagation Test Using Cracked Ring" International Journal of Fatigue and Fracture. (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.NUNOMURA,Y.ODA: "Cracked Ring Specimen for Environment Fatigue and Mixed Mode Fatigue Tests" Proc.4th Int Conf.on Fatigue (FATIGUE 90). 4. 589-594 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Y.UCHIDA,Y.HIGO,S.NUNOMURA: "The Effect of Stress Ratio(R) on Striation Morphology" Proc.4th Int.Conf.on Fatigue (FATIGUE 90). 4. 117-122 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.ONO,M.SHIMOJO,Y.HIGO,S.NUNOMURA: "Strain Synchronized Polarization Current Analysis on Ti Alloy in 0.9% NaCl Solution during Potentiostatic Corrosion Test" Proc.4th Int.Conf.on Fatigue (FATIGUE 90). 4. 2019-2024 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.NOGUCHI,Y.HIGO,S.KUMAI,S.NUNOMURA: "Indentation Loading Method as Minaturized Fatigue Testing" Proc.4th Int.Conf.on Fatigue (FATIGUE 90). 4. 2291-2296 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] T.NATSUI,Y.HIGO,S.NUNOMUR,J.MATSUOKA: "The Effects of Temperature and Humidity on Dynamic and Static Fatigue in PMMA" Proc.4th Int.Conf.on Fatigue (FATIGUE 90). 4. 807-812 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.NUNOMURA,M.ONO,Y.HIGO: "External Current in REsponse in the Corrosion Fatigue Test" Strength of Metals and Alloys. 8. 749-754 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.NUNOMURA (分担): "Advanced CeramicsーMechanical Properties of Ceramicsー" Academic Press, 353 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 布村 成具(分担): "新素材/新金属と最新製造ー加工技術(生体用金属材料)" 総合技術出版, 718 (1988)

    • Related Report
      1990 Annual Research Report

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

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