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1998 Fiscal Year Final Research Report Summary

Fundamental Resarch on Impact Energy absorbing Actuators of Shape Memory Alloys

Research Project

Project/Area Number 09450097
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionTohoku University

Principal Investigator

TANI Junji  Tohoku University, Institute of Fluid Science, Professor, 流体科学研究所, 教授 (30006192)

Co-Investigator(Kenkyū-buntansha) QIU Jinhao  Tohoku University, Institute of Fluid Science, Research Associate, 流体科学研究所, 助手 (60241585)
FURUYA Yasufumi  Tohoku University, Institute of Fluid Science, Associate Professor, 大学院・工学研究科, 助教授 (20133051)
MATSUMOTO Minoru  Tohoku University, Institute for Adovanced Materials processing, Lecturer, 素材工学研究所, 講師 (30006043)
TAKAGI Toshiyuki  Tohoku University, Institute of Fluid Science, Associate Professor, 流体科学研究所, 教授 (20197065)
Project Period (FY) 1997 – 1998
KeywordsMagnetic Shape Memory Alloys / Stress-sensitive Shape Memory Alloys / Impact Energy Absorbing, Actuators / アクチュエータ
Research Abstract

In this research, impact energy absorbing actuators of shape memory alloys (SMA) was studied by using both the shape memory effect and superelasticity of SMA.Three types of SMAs, temperature-sensitive SMA, magnetic SMA (Ni2MnGa) and stress-sensitive SMA (FeNiSi), were used. When collision of cars is predicted by sensors, magnetic field is applied to the SMA actuators so that the collision energy can be absorbed by the shape memory effect and superelasticity of SMA actuators.
First, the relationship between impact force and absorbed energy, impact response of SMA material, the method of magnetic field generation and influence of temperature are clarified theoretically and experimentally in this research. Next the concept of impact energy absorbing actuator was proposed. In order to increase the response speed, magnetic field and stress were also used to induce phase transition in SMAs in addition to temperature. Hence, the possibility of impact energy absorbing SMA actuators, which were impossible for traditional SMAs, has been shown.
In the last of this research project, the static characteristics of magnetic SMA and stress-sensitive SMA were investigated. The static characteristics include the relationship between the critical magnetic field strength and temperature for phase transition of magnetic SMA, and the relationship between critical stress and temperature of stress-sensitive SMA.Based on the static characteristics, impact response test was performed. By applying large electric current with capacitors, the response time of SMA actuators was decreased to about 10ms in the experiment.

  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 高木 敏行, 谷 順二, 鈴木 俊次, 松本 實: "全方位形状記憶合金板の動的変形特性と適応流動制御への応用" 日本機械学会論文集(C)編. 63・615. 3759-3765 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 高木 敏行, 谷 順二, 鈴木 俊次, 松本 實, 棚橋 善克: "形状記憶合金を用いた電磁誘導加熱型バルブの研究" 日本機械学会第74期通常総会講演会講演論文集(I). 617-618 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本 實, 高木 敏行, 谷 順二, 鈴木 俊次, A.N.パシリエフA.ポシュコ: "インテリジェント材料としての強磁性体形状記憶合金Ni_2MnGa" 日本機械学会第74期通常総会講演会講演論文集(I). 625-626 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 松本 實, 高木 敏行, 谷 順二, 鈴木 俊次, A.N.パシリエフA.ポシュコ: "Ni_2MnGa合金の多機能性" 日本機械学会機械力学・計測制御講演論文集. A. 583-584 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Wang.Z., Matsumoto.M., Qiu.J., Takagi.T., and Tani.J.: "Characterization of Ni_2MnGa Made by the Plasma Sintering Method"

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Takagi, J.Tani, S.Suzuki, M.Matsumoto: "Dynamic Thermomechanical Response of an SMA Plate using an All-Round Shape Memory Effect and an Application to an Adaptive Fluid-Flow Controller" Proceedings of the JSME. Vol.C-63, No.615. 3759-3765 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Takagi, J.Tani, S.Suzuki, M.Matsumoto, Y.Tanahasi: "A Study of an Electromagnetic Induced Heating Type SMA Valve" Proceedings of the 74th JSME Spring Annual Meeting. Vol.I. 625-626 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Matsumoto, T.Takagi, J.Tani, S.Suzuki, A.N.Vasilev, A.Bozhko: "Ferromagnetic Shape Memory Alloy Ni2MnGa as an Intelligent Material" Proceedings of the 74th JSME Spring Annual Meeting. Vol.I. 583-584 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M.Matsumoto, T.Takagi, J.Tani, N.Muramatsu, A.N.Vasilev, A.Bozhko: "Multi-Functional Ni2MnGa Alloy" Proceedings of the Dynamics and Design Conference. Vol.A. 583-584 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Z.Wang, M.Matsumoto, J.Qiu, T.Takagi, J.Tani: "Characterization of Ni2MnGa Made by Plasma Sintering Method"

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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