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In vivo sound source using dielectric elastomer actuator to mount endoscope

Research Project

Project/Area Number 17K18858
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Mechanical dynamics, Robotics, and related fields
Research InstitutionShibaura Institute of Technology

Principal Investigator

Hosoya Naoki  芝浦工業大学, 工学部, 教授 (40344957)

Co-Investigator(Kenkyū-buntansha) 前田 真吾  芝浦工業大学, 工学部, 准教授 (40424808)
Project Period (FY) 2017-06-30 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords誘電エラストマーアクチュエータ / スピーカ / 3次元構造体 / 高速応答性 / 音響放射特性 / 点音源 / 指向性 / 振動制御 / 無指向性 / 風船 / 3次元変形 / 誘電エラストマーアクチュエーター / 振動特性 / 球面 / 自由曲面 / カーボンナノチューブ / 複屈折
Outline of Final Research Achievements

A balloon dielectric elastomer actuator (DEA) speaker is constructed by forming a disk-shaped DEA film into a sphere using air, increasing its surface area by 3033%. Sound is generated via expansion and contraction. Shaping the DEA film into a sphere decreases the film thickness and applies a significant amount of pre-strain to the film, allowing low-voltage (800 V) operations and rapid responses at high frequencies of up to 16 kHz. This is the first time to achieve ultra-fast response of acrylic DEA. The acoustic radiation pattern of the speaker extends over a 270 degrees range. Compared to polyhedron loudspeakers, which are currently used as omnidirectional sound sources in general acoustic tests, a balloon DEA speaker is compact and lightweight. Furthermore, we demonstrate a concave shape DEA speaker, yielding an acoustic radiation pattern controllable speaker from an omnidirectional to directional.

Academic Significance and Societal Importance of the Research Achievements

従来,複数のダイナミックスピーカを組み合わせ,正多面体スピーカとすることで点音源を実現したり,線上に並べることで線音源を実現したりしてきた.所望の音響放射特性を実現するためには,必ず複数のスピーカを組み合わせる必要があった.本研究成果により,1つのスピーカで音響放射特性を無指向性から指向性まで制御できるようになった.DEAスピーカは軽量かつ小型であるため,様々なデバイスへの搭載を可能にする.このDEAスピーカを内視鏡に実装し,腹部超音波エコー検査のように,生体組織を内部から点または面で加振できれば,生体組織の可視化における時空間分解能が向上し,病変の早期発見に大きく寄与することが期待される.

Report

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

    (40 results)

All 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (13 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Open Access: 12 results) Presentation (21 results) (of which Int'l Joint Research: 9 results,  Invited: 3 results) Patent(Industrial Property Rights) (2 results)

  • [Int'l Joint Research] University of Edinburgh(英国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] AGH University of Science and Technology(ポーランド)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] KMUTT(タイ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] Universiti Teknologi Malaysia(マレーシア)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Spherical projectile impact using compressed air for frequency response function measurements in vibration tests2019

    • Author(s)
      Hosoya Naoki、Kato Junya、Kajiwara Itsuro
    • Journal Title

      Mechanical Systems and Signal Processing

      Volume: 134 Pages: 106295-106295

    • DOI

      10.1016/j.ymssp.2019.106295

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Frequency response function measurements of rotational degrees of freedom using a non-contact moment excitation based on nanosecond laser ablation2019

    • Author(s)
      Hosoya Naoki、Ozawa Shota、Kajiwara Itsuro
    • Journal Title

      Journal of Sound and Vibration

      Volume: 456 Pages: 239-253

    • DOI

      10.1016/j.jsv.2019.05.024

    • NAID

      120006707754

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Design of dielectric elastomer actuators for vibration control at high frequencies2019

    • Author(s)
      Kajiwara Itsuro、Kitabatake Shigeki、Hosoya Naoki、Maeda Shingo
    • Journal Title

      International Journal of Mechanical Sciences

      Volume: 157-158 Pages: 849-857

    • DOI

      10.1016/j.ijmecsci.2019.05.019

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Balloon dielectric elastomer actuator speaker2019

    • Author(s)
      Hosoya Naoki、Masuda Hiroaki、Maeda Shingo
    • Journal Title

      Applied Acoustics

      Volume: 148 Pages: 238-245

    • DOI

      10.1016/j.apacoust.2018.12.032

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Deformable motor driven by dielectric elastomer actuators and flexible mechanisms2019

    • Author(s)
      Ayato Minaminosono, Hiroki Shigemune ,Yuto Okuno, Tsubasa Katsumata, Naoki Hosoya, and Shingo Maeda
    • Journal Title

      Frontiers in Robotics and AI

      Volume: 6 Pages: 1-12

    • DOI

      10.3389/frobt.2019.00001

    • Related Report
      2019 Annual Research Report 2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 柔らかく変形可能なモータ2019

    • Author(s)
      南之園彩斗,重宗宏毅,細矢直基,前田真吾
    • Journal Title

      計測と制御

      Volume: 58(10) Pages: 798-801

    • NAID

      130007732476

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Design of dielectric elastomer actuators for vibration control at high frequencies2019

    • Author(s)
      Itsuro Kajiwara, Shigeki Kitabatake, Naoki Hosoya, and Shingo Maeda
    • Journal Title

      International Journal of Mechanical Sciences

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evaluation of the clamping force of bolted joints using local mode characteristics of a bolt head2018

    • Author(s)
      Naoki Hosoya, Takahiko Hosokawa, Itsuro Kajiwara, Shinji Hashimura, and Feblil Huda
    • Journal Title

      Journal of Nondestructive Evaluation

      Volume: 37 Issue: 4 Pages: 75-75

    • DOI

      10.1007/s10921-018-0528-7

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Dielectric elastomer actuators with carbon nanotube electrodes painted with a soft brush2018

    • Author(s)
      Hiroki Shigemune, Shigeki Sugano, Jun Nishitani, Masayuki Yamauchi, Naoki Hosoya, Shuji Hashimoto, and Shingo Maeda
    • Journal Title

      Actuators

      Volume: 7 Issue: 3 Pages: 51-51

    • DOI

      10.3390/act7030051

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Damage detection in pipes based on acoustic excitations using laser-induced plasma2018

    • Author(s)
      Itsuro Kajiwara, Ryosuke Akita and Naoki Hosoya
    • Journal Title

      Mechanical Systems and Signal Processing

      Volume: 111 Pages: 570-579

    • DOI

      10.1016/j.ymssp.2018.04.004

    • NAID

      120006486805

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Experimental verification of a real-time tuning method of a model-based controller by perturbations to its poles2018

    • Author(s)
      Kajiwara Itsuro、Furuya Keiichiro、Ishizuka Shinichi
    • Journal Title

      Mechanical Systems and Signal Processing

      Volume: 107 Pages: 396-408

    • DOI

      10.1016/j.ijmecsci.2018.03.023

    • NAID

      120006463567

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lamb wave generation using nanosecond laser ablation to detect damage2018

    • Author(s)
      Naoki Hosoya, Ryosuke Umino, Atsushi Kanda, Itsuro Kajiwara, and Atsushi Yoshinaga
    • Journal Title

      Journal of Vibration and Control

      Volume: 24 Pages: 5842-5853

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dynamic characterizations of underwater structures using noncontact vibration tests based on nanosecond laser ablation in water: evaluation of passive vibration suppression with damping materials2017

    • Author(s)
      Hosoya Naoki、Kajiwara Itsuro、Umenai Koh、Maeda Shingo
    • Journal Title

      Journal of Vibration and Control

      Volume: - Issue: 16 Pages: 3714-3725

    • DOI

      10.1177/1077546317710158

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] An optimazation of clamping methods for soft materials2019

    • Author(s)
      Nayuta Arai, Naoki Hosoya, Shingo Maeda, Shinji Hashimura, Hiroyuki Murata, Danai, Phaoharuhansa, Atikorn Wongsatanawarid
    • Organizer
      The 14th South East Asian Technical University Consortium 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Loosening Detection of a Bolted Joint Based on Monitoring Dynamic Characteristics in the Ultrasonic Frequency Region2019

    • Author(s)
      Takanori Niikura, Naoki Hosoya, Shinji Hashimura, Itsuro Kajiwara, Francesco Giorgio-Serchi
    • Organizer
      The 18th Asia-Pacific Vibration Conference
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 誘電エラストマーアクチュエータによる加振を用いたりんごの振動特性計測2019

    • Author(s)
      比留田稔樹,細矢直基,前田真吾,梶原逸朗
    • Organizer
      第62回自動制御連合講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] レーザー音響加振/計測技術を用いたパイプ構造の損傷検知2019

    • Author(s)
      梶原逸朗, 秋田涼佑, 細矢直基
    • Organizer
      日本機械学会[No.19-1] 2019年度年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 誘電エラストマーアクチュエータの発生応力分布の可視化2019

    • Author(s)
      清水翔, 細矢直基, 前田真吾
    • Organizer
      日本機械学会[No.19-13] Dynamics and Design Conference 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 誘電エラストマーアクチュエータを用いた膜構造の振動制御2019

    • Author(s)
      比留田稔樹, 平原隼人, 梶原逸朗, 細矢直基, 前田真吾
    • Organizer
      日本機械学会[No.19-13] Dynamics and Design Conference 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 実験モード解析によるポポー果実の非接触非破壊硬度評価2019

    • Author(s)
      荒井那由他,高橋健太郎,細矢直基,梶原逸朗
    • Organizer
      日本機械学会[No.19-13] Dynamics and Design Conference 2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 誘電エラストマーアクチュエータ を用いたスピーカ2019

    • Author(s)
      細矢直基
    • Organizer
      日本機械学会[No.19-13] Dynamics and Design Conference 2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Vibration and acoustic tests2019

    • Author(s)
      Naoki Hosoya
    • Organizer
      Centre for artificial intelligence & robotics (CAIRO) UTM expert talk series 2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Assessment of Dynamic Young’s Modulus and Damping Ratio of Bamboo Fiber Reinforced Polymer Composites using Shock Wave2019

    • Author(s)
      Kengo Yamamoto, Akito Takasaki, Naoki Hosoya
    • Organizer
      Proceedings of the 15th IFToMM World Congress on Mechanism and Machine Science
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Assessment of Dynamic Young’s Modulus and Damping Ratio of Bamboo Fiber Reinforced Polymer Composites using Shock Wave2019

    • Author(s)
      Kengo Yamamoto, Akito Takasaki, and Naoki Hosoya
    • Organizer
      The 15th IFToMM World Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Visualization of Lamb waves propagating in transparent materials using high-speed camera2018

    • Author(s)
      Tsubasa Katsumata, Naoki Hosoya, Atsushi Kanda, and Itsuro Kajiwara
    • Organizer
      The 5th Asia-Pacific Conference on Engineering and Applied Sciences
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Measurements on soft materials2018

    • Author(s)
      Naoki Hosoya
    • Organizer
      The first IEEE-RAS International Conference on Soft Robotics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] レーザー誘起プラズマで生成された衝撃波によるインパルス加振を用いた透明高分子材料へのLamb波生成2018

    • Author(s)
      勝又翼,細矢直基,神田淳, 梶原逸朗
    • Organizer
      日本機械学会 [No.18-64] 第17回評価・診断に関するシンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] 実験モード解析による「太陽のタマゴ」の硬さ評価2018

    • Author(s)
      細矢直基, 出西勇気, 高橋健太郎, 梶原逸朗
    • Organizer
      日本機械学会 [No.18-7] Dynamics and Design Conference 2018
    • Related Report
      2018 Research-status Report
  • [Presentation] DEAによる構造物の振動制御に関する研究(DEAの積層構成と制御効果の考察)2018

    • Author(s)
      平原隼人,梶原逸朗, 前田真吾, 細矢直基
    • Organizer
      日本機械学会 [No.18-7] Dynamics and Design Conference 2018 講演論文集
    • Related Report
      2018 Research-status Report
  • [Presentation] Structural health monitoring based on laser excitation vibration test and wavelet transform2017

    • Author(s)
      Shanshan Cao, Itsuro Kajiwara, Xisheng Lia, Naoki Hosoya
    • Organizer
      2017 Eleventh International Conference on Sensing Technology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Bolt loosening diagnosis by measuring vibration responses excited by laser induced plasma2017

    • Author(s)
      Mayank Pratap Singh,Itsuro Kajiwara,Naoki Hosoya
    • Organizer
      The 17th Asian Pacific Vibration Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Excitation system based on laser-induced plasma to generate Lamb wave2017

    • Author(s)
      Naoki Hosoya,Atsushi Yoshinaga,Atsushi Kanda,Ryosuke Umino,Itsuro Kajiwara
    • Organizer
      International Conference on Engineering Vibration 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] レーザーアブレーションを用いたLamb波の生成(金属チップによる損傷防止)2017

    • Author(s)
      吉永敦、奥村洋平、細矢直基、神田淳、岩﨑紗綾、梶原逸朗
    • Organizer
      [No.17-13]Dynamics and Design Conference 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] レーザーを用いた音響加振に基づく閉空間内の異物検知2017

    • Author(s)
      小田一心、梶原逸朗、細矢直基
    • Organizer
      [No.17-13]Dynamics and Design Conference 2017
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] 三次元誘電エラストマ構造体、三次元誘電エラストマ構造体を用いたスピーカ、および三次元誘電エラストマ構造体の製造方法2019

    • Inventor(s)
      細矢直基,前田真吾,増田紘明
    • Industrial Property Rights Holder
      細矢直基,前田真吾,増田紘明
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2019-132812
    • Filing Date
      2019
    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 振動特性計測用の発射装置、加振力入力具、振動特性計測システム及び振動特性計測方法2018

    • Inventor(s)
      細矢直基,梶原逸朗
    • Industrial Property Rights Holder
      芝浦工業大学,北海道大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-125879
    • Filing Date
      2018
    • Related Report
      2018 Research-status Report

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Published: 2017-07-21   Modified: 2021-02-19  

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