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Evaluation of Degrading Characteristics of Ti-Ni Shape Memory Alloy under Combined Cyclic Condition of Load, Displacement and Temperature

Research Project

Project/Area Number 63460075
Research Category

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

Allocation TypeSingle-year Grants
Research Field 機械材料工学
Research InstitutionRitsumeikan University

Principal Investigator

TANAKA Tsuneshichi  Ritsumeikan University, Professor, 理工学部, 教授 (90066613)

Co-Investigator(Kenkyū-buntansha) NAKAYAMA Hideaki  Faculty of Junior College of Automobile Industry, Osaka Sangyo University, Profe, 短期大学部, 教授 (90097999)
Project Period (FY) 1988 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥4,300,000 (Direct Cost: ¥4,300,000)
Fiscal Year 1989: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1988: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsShape memory alloy / Shape memory effect / Superelasticity / TiーNi系合金 / 温度サイクル / 回復力 / 劣化特性
Research Abstract

The aim of this Study, conducted during two years of 1988 and 1989, is to evaluate the cyclic degrading characteristics of Ni-Ti shape memory alloy under combined cyclic conditions of load, displacement and temperature. In the first year of 1988, an experimental system was developed to investigate the material performance of the Ni-Ti shape memory alloy.
And then, by using this testing system, degrading processes in low cycles range were studied precisely on two phases; one was shape memory effect and another was superelasticity. In the second year of 1989, degrading tests in long life range up to 10000 cycles were conducted systematically by adopting resistance-heating procedure, which enable us to conduct thermal cycle tests with period of about 20 sec.
Major conclusions obtained through 2 year investigation can be summarized as follows:
(1) It was confirmed that the level of performance of the experimental system used in this study to evaluate the.degrading processes of shape memory alloy-was high. (2) Heat-treatment condition to control the shape memory effect predominantly influenced the martensite transformation temperature, and the lower was the heat-treatment temperature the higher was the load level to induce the martensite transformation. (3) Shape memory effect and superelasticity could be kept during long term range when heat-treated at low temperature.

Report

(3 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] 田中道七,中山英明,山元茂,小城良章,藤井勉: "Ni-Ti系形状記憶合金の繰返し劣化特性評価に関する研究" 日本材料学会第39期通常総会講演会にて発表予定(1990年5月).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] T.TANAKA, H.NAKAYAMA, S.YAMAMOTO, Y.KOJYO, and T.FUJII: "Evaluation of Cyclic Degrading Characteristics of Ni-Ti Shape Memory Alloy" Preprint of the 39th Annual Meeting of the Society of Materials Science, Japan, (1990).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 田中道七,中山英明,山元茂,小城良章,藤井勉: "NiーTi系形状記憶合金の繰返し劣化特性評価に関する研究" 日本材料学会第39期通常総会講演会にて発表予定(1990年5月).

    • Related Report
      1989 Annual Research Report
  • [Publications] 田中道七,中山英明,藤井勉: 材料.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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