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Evaluation of the electromagneto-mechanical characteristics of the magnetostrictive bolt and development of the devices using magnetostrictive bolt

Research Project

Project/Area Number 18K13654
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionIbaraki University

Principal Investigator

Mori Kotaro  茨城大学, 理工学研究科(工学野), 講師 (40712740)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywords磁歪材料 / 電磁力学特性 / センシング / 材料力学
Outline of Final Research Achievements

The purpose of this study is to develop a bolt using magnetostrictive materials that has a self-sensing capability for the force and a retightening capability by external magnetic field, and to consider the electromagneto-mechanical characteristics of FeCo bolts theoretically and experimentally. And, we also studied the energy harvesting characteristics due to vibration and shock, and the design and structure of multifunctional bolt-type devices.

Academic Significance and Societal Importance of the Research Achievements

ネジは多くの機械,構造物で固定のために用いられているが,時間と共に緩み,締結力が低下することが問題となっている.また,ネジは弛みだけでなく過度な締付けも,破壊の原因となるため,ネジ内部の軸力の把握が重要である.これらの問題に対し,磁歪材料製ネジは,非接触かつ大掛かりな装置を用いずともネジ内部の軸力を把握することが可能となった.また,鉄コバルト合金は安価で通常のネジと近い機械的特性を持っているため,既存のネジと置換できる点も優れている.

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Evaluation of the axial force in an FeCo bolt using the inverse magnetostrictive effect2020

    • Author(s)
      Mori Kotaro、Horibe Tadashi、Maejima Kensuke
    • Journal Title

      Measurement

      Volume: 165 Pages: 108131-108131

    • DOI

      10.1016/j.measurement.2020.108131

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 逆磁歪効果を利用したFeCo 製ボルトの締結特性評価2019

    • Author(s)
      飛田遼,森孝太郎,堀辺忠志
    • Organizer
      日本機械学会2019年度茨城講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] 逆磁歪効果を利用したFeCo 製ボルトの締結特性評価2019

    • Author(s)
      森孝太郎,飛田遼,堀辺忠志,成田史生
    • Organizer
      日本機械学会2019年度年次大会
    • Related Report
      2019 Research-status Report
  • [Patent(Industrial Property Rights)] ネジ、および、ネジの締め付け制御方法2020

    • Inventor(s)
      森孝太郎
    • Industrial Property Rights Holder
      森孝太郎
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-146660
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2022-01-27  

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