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Investigation of flexoelectric effect for torsional deformation and new rotational acceleration sensor

Research Project

Project/Area Number 17K06258
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Intelligent mechanics/Mechanical systems
Research InstitutionShinshu University

Principal Investigator

HENMI Nobuhiko  信州大学, 学術研究院工学系, 教授 (80256669)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywordsフレクソエレクトリック効果 / ねじりせん断ひずみ / 角加速度センサ / PZT / 電気分極 / 圧電材料 / チタン酸ジルコン酸鉛 / ねじり振動 / 圧電素子 / ねじり / センサ / 振動 / 機械力学・制御 / 計測工学 / 電気機器工学
Outline of Final Research Achievements

The flexoelectric effect due to the torsion of PZT prism was investigated. An experimental device was manufactured in which the alignment error between chucking gripping both ends of the test piece was suppressed to 0.03mm or less, and the amount of electrical polarization generated between each of the four electrodes provided on the side surface of the prism by twisting was examined. The flexoelectric coefficient was evaluated by calculating the amount of strain gradient for the torsion angle by FEM. An accidental discovery through a series of experiments revealed that the combined deformation of bending and torsion yields a larger polarization than the single deformation state. It was also found that a torque bias should be applied for the application of an angular acceleration sensor.

Academic Significance and Societal Importance of the Research Achievements

固体材料のフレクソエレクトリック効果については,日本ではほとんど研究されていなかったが,近年の研究により大きな分極量が得られる可能性がわかってきた。本研究の成果もせん断ひずみ勾配に対するフレクソエレクトリック係数の定量的結果を得ており,この学術分野に新しいデータ事例として貢献することができた。特に,ねじりと曲げの複合により大きな分極が得られることを発見し,新しい振動センサとしての応用が期待される。従来は角加速度を直接計測できるセンサがなかったので,本成果により自動車や航空宇宙システムのような回転振動を計測・制御する分野での応用展開の可能性を得ることができた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2019 2018 2017

All Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Presentation] Flexoelectric effect for share strain gradient in PZT prism under torsion2019

    • Author(s)
      Nobuhiko Henmi, Takahiko Iwase, Hiroyuki Shima
    • Organizer
      International Workshop on Piezoelectric Materials and Applications in Actuators 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 固体材料のフレクソエレクトリック効果とその応用の可能性について2019

    • Author(s)
      辺見信彦
    • Organizer
      2019年度精密工学会秋季大会学術講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 角柱型PZTのねじり変形に対するフレクソエレクトリック効果の研究2019

    • Author(s)
      岩瀬貴彦,島 啓之,辺見信彦
    • Organizer
      2019年度精密工学会秋季大会学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] PZT角柱のねじり変形に対するフレクソエレクトリック効果の研究2018

    • Author(s)
      岩瀬貴彦,日下部栞志,辺見信彦
    • Organizer
      精密工学会2018年度北陸信越支部学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Characteristics of The Piezoelectric Jerk Sensor2018

    • Author(s)
      Norifumi Tanaka, Hong Quang Nguyen,Nobuhiko Henmi
    • Organizer
      8th International Conference on Positioning Technology
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] PZT角柱のねじり変形に対するフレクソエレクトリック効果の研究2017

    • Author(s)
      日下部栞志,辺見信彦
    • Organizer
      2017年度精密工学会秋季大会学術講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] Flexoelectric Effect of Lead Zirconate Titanate by Torsional Deformation2017

    • Author(s)
      Nobuhiko Henmi, Kanji Kusakabe
    • Organizer
      The 7th International Conference on Manufacturing , Design and Tribology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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