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Non-destructive inspection of large structures based on laser-induced plasma shock wave excitation technique and polarization interferometer

Research Project

Project/Area Number 21H01279
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 20010:Mechanics and mechatronics-related
Research InstitutionShibaura Institute of Technology

Principal Investigator

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

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2023: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Keywordsレーザー誘起プラズマ / 衝撃波 / 非破壊検査 / Lamb波 / 偏光干渉計
Outline of Research at the Start

航空機など大型構造物の欠陥や損傷の検出は,検査員の目視による方法が一般的である.しかし,判定結果には個人差によるばらつきがある.研究代表者は,レーザー誘起プラズマ(Laser-Induced Plasma: LIP)加振により生成されたLamb波を用いる非破壊検査法を実現した.本手法により,人工的に設けた亀裂を検出できた.さらに,接触式デバイスでは数時間を要していたものを,本手法では40分に短縮することに成功した.本研究では,LIP加振と,光の偏光と干渉を組み合わせたLIP偏光干渉計を構築する.そして,本システムによりLamb波を面計測(従来は点計測)することで,広域非破壊検査の時間をさらに短縮する.

Outline of Final Research Achievements

Inspectors have demonstrated visual inspection to detect damage or failure of large-scale structures such as aircraft. Therefore, the inspected results vary because of the differences among individuals, resulting in non-cost-effective and time-consuming approaches. The Principal Investigator of this study has been studying the detection of damage to structures using Lamb wave propagation with laser-induced plasma (LIP) shock waves for the input and a scanning laser Doppler vibrometer for the output. This method can provide non-destructive testing (NDT) for a structure with an inspection area of 100 mm × 100 mm square with 2601 points in approximately 40 min, but the inspection time must be less.
In this study, a commercially available high-speed polarization interferometry for the output that can simultaneously measure multipoint vibration responses combined with LIP shock wave excitation for the input was used to visualize Lamb wave propagation in NDT in a shorter measurement time.

Academic Significance and Societal Importance of the Research Achievements

スキャニングレーザードップラー振動計や3軸加速度計を用いた多点計測による振動実験を,本システムで置き換えることができれば,振動実験における工数や費用が低減される.そして,あらゆる機械製品の動的設計の効率化,機械学習を活用するための莫大な計測データの取得にも寄与する.さらに,従来,困難とされてきた非定常応答を面計測できるため,例えば,ハードディスク落下時の耐衝撃性やディスクの空力安定性などの解析にも役立つ.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (12 results)

All 2024 2023 2022 2021

All Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results,  Open Access: 6 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Active vibration control for thin curved structures using dielectric elastomer actuators2024

    • Author(s)
      Hiruta Toshiki、Ishihara Hiroki、Hosoya Naoki、Maeda Shingo、Takagi Kentaro、Kajiwara Itsuro
    • Journal Title

      Smart Materials and Structures

      Volume: 33 Issue: 3 Pages: 035047-035047

    • DOI

      10.1088/1361-665x/ad2880

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Lamb waves evaluation in CFRP plates with laser shock wave technique2023

    • Author(s)
      Hosoya Naoki、Mita Masakatsu、Lecointre Lea A.C.、Tonegawa Shota、Higuchi Ryo、Yokozeki Tomohiro、Takeda Shin-ichi
    • Journal Title

      Structures

      Volume: 58 Pages: 105566-105566

    • DOI

      10.1016/j.istruc.2023.105566

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Measurements of S0 mode Lamb waves using a high-speed polarization camera to detect damage in transparent materials during non-contact excitation based on a laser-induced plasma shock wave2022

    • Author(s)
      Hosoya Naoki、Katsumata Tsubasa、Kajiwara Itsuro、Onuma Takashi、Kanda Atsushi
    • Journal Title

      Optics and Lasers in Engineering

      Volume: 148 Pages: 106770-106770

    • DOI

      10.1016/j.optlaseng.2021.106770

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Defect detection of concrete in infrastructure based on Rayleigh wave propagation generated by laser-induced plasma shock waves2022

    • Author(s)
      Sho Wakata, Naoki Hosoya, Noboru Hasegawa, Masaharu Nishikino
    • Journal Title

      International Journal of Mechanical Sciences

      Volume: 218 Pages: 107039-107039

    • DOI

      10.1016/j.ijmecsci.2021.107039

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A DIY Fabrication Approach of Stretchable Sensors Using Carbon Nano Tube Powder for Wearable Device2021

    • Author(s)
      Wiranata Ardi、Ohsugi Yunosuke、Minaminosono Ayato、Mao Zebing、Kurata Haruyuki、Hosoya Naoki、Maeda Shingo
    • Journal Title

      Frontiers in Robotics and AI

      Volume: 8 Pages: 773056-773056

    • DOI

      10.3389/frobt.2021.773056

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High-Frequency, low-voltage oscillations of dielectric elastomer actuators2021

    • Author(s)
      Wiranata Ardi、Kanno Makoto、Chiya Naoki、Okabe Hozuma、Horii Tatsuhiro、Fujie Toshinori、Hosoya Naoki、Maeda Shingo
    • Journal Title

      Applied Physics Express

      Volume: 15 Issue: 1 Pages: 011002-011002

    • DOI

      10.35848/1882-0786/ac3d41

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Characterization of Lamb wave propagation in CFRP plates with a stiffener2024

    • Author(s)
      Mamoru Suyama, Masakatsu Mita, Lea A.C. Lecointre, Ryo Higuchi, Tomohiro Yokozeki, Shin-ichi Takeda, Naoki Hosoya
    • Organizer
      The 17th International Conference on Motion and Vibration Control (MoViC 2024) and the 20th Asia-Pacific Vibration Conference (APVC2021)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 果物の熟度評価のための装着型ソフトアクチュエータ2024

    • Author(s)
      笹野翔太郎,磯貝航,前田真吾,細矢直基
    • Organizer
      日本機械学会機械力学・計測制御部門D&D2024
    • Related Report
      2023 Annual Research Report
  • [Presentation] レーザー加振技術により生成されたLamb波を用いたヤング率の計測2023

    • Author(s)
      三田正勝,富田裕亮,平田幸太郎,細矢直基
    • Organizer
      日本機械学会機械力学・計測制御部門D&D2023
    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Presentation] レーザーインパルス加振力の制御2023

    • Author(s)
      桑田堅叶,長谷川登,錦野将元,細矢直基
    • Organizer
      日本機械学会機械力学・計測制御部門D&D2023
    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Presentation] 天然ゴムを用いた振動センサ2023

    • Author(s)
      藤牧礼欧,前田真吾,新竹純,細矢直基
    • Organizer
      日本機械学会機械力学・計測制御部門D&D2023
    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Presentation] 偏光干渉計による振動モード形の可視化2021

    • Author(s)
      平田 幸太郎,森川 颯日,細矢 直基, 長田 悠希,丹羽 隼人,大沼 隼志
    • Organizer
      [No.21-55] 日本機械学会 第 17 回「運動と振動の制御」シンポジウム (MoViC2021)
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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