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Visualization of defects in CFRP by electromagnetic camera system based on LC resonance between carbon fiber and resin matrix

Research Project

Project/Area Number 23K22623
Project/Area Number (Other) 22H01352 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 18010:Mechanics of materials and materials-related
Research InstitutionTohoku University

Principal Investigator

内一 哲哉  東北大学, 流体科学研究所, 教授 (70313038)

Co-Investigator(Kenkyū-buntansha) 武田 翔  東北大学, 流体科学研究所, 助教 (10826225)
Project Period (FY) 2024-04-01 – 2026-03-31
Project Status Granted (Fiscal Year 2024)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2024: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2023: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2022: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Keywords非破壊評価 / 複合材料 / CFRP / 電磁特性 / 炭素繊維
Outline of Research at the Start

本研究では従来の渦電流試験法を拡張し,CFRPの欠陥評価のための新しい電磁非破壊試験法を提案し実証する.CFRPを構成する炭素繊維と樹脂の間のLC共振現象に着目し,炭素繊維に流れる誘導電流(渦電流)と樹脂における変位電流が競合する周波数帯域で,炭素繊維と樹脂の構造を可視化する電磁カメラシステムを構築する.このために,炭素繊維と樹脂のミクロ構造における電磁特性モデルを考慮したマクロな電磁場数値解析法を確立する.数値解析と電磁測定システムを組み合わせた電磁カメラシステムにより,対象となる欠陥の種類毎に炭素繊維-樹脂間のLC共振が生ずる周波数を選定し,炭素繊維と樹脂の欠陥を抽出する手法を確立する.

Outline of Annual Research Achievements

本研究では,CFRPの炭素繊維-樹脂間のLC共振現象に着目し,炭素繊維に流れる誘導電流と樹脂における変位電流が競合する周波数帯域において繊維と樹脂の構造を可視化する電磁カメラシステムを提案する.このために,令和6年度にはCFRPの電磁モデルに基づく炭素繊維と樹脂の共振現象を調べるとともに,炭素繊維と樹脂の構造を可視化する電磁カメラシステムをの検証と,これを用いたCFRPの欠陥の可視化を試みた.具体的な研究実施内容は下記のとおりである.
LC共振周波数帯におけるCFRPの不均質構造と異方性についての電磁特性モデルの検討を行った.令和4年度および令和5年度に構築した繊維束と樹脂の電磁特性の複合則にもとづくCFRPのマクロスケールの電磁場解析を実施した.さらに,炭素繊維-樹脂間のLC共振現象が生ずる周波数帯域を推定するための解析法について検討した.
令和5年度に周波数調整機構を実装した電磁カメラシステムと上記の炭素繊維と樹脂のLC現象の周波数帯域の推定法を組み合わせて,LC共振現象時のCFRPの電磁応答測定を行い,CFRPにおける炭素繊維と樹脂の欠陥の可視化を試みた.電磁カメラシステムの検証を行うため製作した炭素繊維と樹脂の欠陥を含むCFRP試験片を用いて,各種欠陥評価を行い,X線CT分析やX線位相イメージング分析による炭素繊維や樹脂の欠陥情報との比較を行った.これらの比較に基づき,システムの総合評価を行うとともに,精度をさらに高めるための方策について議論した.

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

炭素繊維と樹脂のLC共振現象を用いたCFRPの電磁カメラシステムを構築し,そのシステム評価を行った.欠陥評価の精度をさらに高める方法を見いだし,これを検討するために研究期間の延長を行うこととした.

Strategy for Future Research Activity

CFRPの電磁カメラシステムの欠陥評価の精度をさらに高めるために,プローブのサイズや形状の最適化を行う.

Report

(3 results)
  • 2024 Research-status Report
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (23 results)

All 2024 2023 2022 Other

All Int'l Joint Research (5 results) Journal Article (2 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 2 results) Presentation (16 results) (of which Int'l Joint Research: 11 results)

  • [Int'l Joint Research] ブダペスト工科経済大学(ハンガリー)

    • Related Report
      2024 Research-status Report
  • [Int'l Joint Research] ブリストル大学(英国)

    • Related Report
      2024 Research-status Report
  • [Int'l Joint Research] 西安交通大学(中国)

    • Related Report
      2024 Research-status Report
  • [Int'l Joint Research] ブリストル大学(英国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ブダペスト工科経済大学(ハンガリー)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] A Numerical Simulation Method for High-Frequency Eddy Current Testing Considering Displacement Current Effect2024

    • Author(s)
      Guo Wei、Xie Shejuan、Du Yali、Chen Hong-En、Chen Zhenmao、Takagi Takayuki、Uchimoto Tetsuya
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 60 Issue: 3 Pages: 1-4

    • DOI

      10.1109/tmag.2023.3323810

    • Related Report
      2024 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Water Uptake in Epoxy Ionic Liquid Free Film Polymer by Gravimetric Analysis and Comparison with Nondestructive Dielectric Analysis2022

    • Author(s)
      Lucas Ollivier-Lamarque, Sebastien Livi, Tetsuya Uchimoto, Nicolas Mary
    • Journal Title

      Nanomaterials

      Volume: 12 Issue: 4 Pages: 651-651

    • DOI

      10.3390/nano12040651

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Evaluation of Mechanical Properties of Filament-Wound CFRP Using Eddy Current Testing2024

    • Author(s)
      Kosei Nakajima, Tetsuya Uchimoto, Hiroyuki Kosukegawa, Toshiyuki Takagi, Sho Takeda, Takeshi Watanabe, Yuta Urushiyama, Yusuke Tsuchiyama
    • Organizer
      The 21st European Conference on Composite Materials (ECCM21)
    • Related Report
      2024 Research-status Report
    • Int'l Joint Research
  • [Presentation] Correlation between Deformation Behavior of Filament Wound CFRP and Eddy Current Testing Signals2024

    • Author(s)
      Kosei Nakajima, Tetsuya Uchimoto
    • Organizer
      Twenty-first International Conference on Flow Dynamics (ICFD2024)
    • Related Report
      2024 Research-status Report
    • Int'l Joint Research
  • [Presentation] NON-DESTRUCTIVE EVALUATION OF FIBER IRREGULARITIES IN FILAMENT WINDING MOLDED CFRP USING EDDY CURRENT TESTING2023

    • Author(s)
      4.Kodai TANAKA, Tetsuya UCHIMOTO, Sho TAKEDA, Hiroyuki KOSUKEGAWA, Toshiyuki TAKAGI, Takeshi WATANABE, Yuta URUSHIYAMA, Yusuke TSUCHIYAMA, Takehiro SHIRA
    • Organizer
      26th International Workshop on Electromagnetic Nondestructive Evaluation (ENDE 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Fiber Misalignment in CFRP with Curvature Using Eddy Current Testing2023

    • Author(s)
      Kei Sasaki, Sho Takeda, Tetsuya Uchimoto, Hiroyuki Kosukegawa, Jin Inoue
    • Organizer
      Twentieth International Conference on Flow Dynamics (ICFD2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of Conductivity Model in Unidirectional CFRP for Eddy Current Testing with Directive Racetrack Coil2023

    • Author(s)
      Lucas OLLIVIER-LAMARQUE, Tetsuya UCHIMOTO, Sho TAKEDA, Hiroyuki KOSUKEGAWA, Toshiyuki TAKAGI, Takeshi WATANABE, Yusuke TSUCHIYAMA, Yuta URUSHIYAMA
    • Organizer
      21st International Symposium on Applied Electromagnetics and Mechanics (ISEM2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 渦電流試験を用いた曲率を有するCFRPの繊維ミスアライメント評価2023

    • Author(s)
      佐々木 啓, 武田 翔, 内一 哲哉, 小助川 博之, 井上 甚
    • Organizer
      第48回複合材料シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 渦電流試験法を用いたフィラメントワインディング成型CFRP の機械的特性の評価2023

    • Author(s)
      中嶋 孝誠, 内一 哲哉, 武田 翔, 小助川 博之, 高木 敏行, 渡邉 健, 漆山 雄太, 土山 友輔
    • Organizer
      日本機械学会 M&M2023 材料力学カンファレンス
    • Related Report
      2023 Annual Research Report
  • [Presentation] Water Uptake Detection in Ionic Liquid Cured Epoxy Polymers by Non-Destructive Capacitor Sensor2022

    • Author(s)
      Lucas OLLIVIER-LAMARQUE, Tetsuya UCHIMOTO, Nicolas MARY, Sebastien LIVI
    • Organizer
      20th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Diffusion of Water in an Ionic Liquid Cured Epoxy Polymer and its Effect on Dielectric Properties2022

    • Author(s)
      L. Ollivier-Lamarque, T. Uchimoto, N. Mary, S. Marcelin, S. Livi
    • Organizer
      EUROCORR 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Defects in CFRP Material Based on High Frequency Eddy Current Testing Method2022

    • Author(s)
      Guo Wei, Xie Shejuan, Chen Zhenmao, Du Yali, Tetsuya Uchimoto, Toshiyuki Takagi
    • Organizer
      The Twenty-second International Symposium on Advanced Fluid Information (AFI2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Non-destructive Evaluation of Fiber Distribution in Filament Winding Molded CFRP by Eddy Current Testing2022

    • Author(s)
      Kodai Tanaka, Akihumi Seto, Tetsuya Uchimoto, Sho Takeda, Hiroyuki Kosukegawa, Toshiyuki Takagi, Takeshi Watanabe, Yuta Urushiyama, Yusuke Tuchiyama
    • Organizer
      The 19th International Conference on Flow Dynamics (ICFD2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Performance Evaluation of High Resolution Eddy Current Probe Using Magneto-Optical Effect2022

    • Author(s)
      Kazuki Kanai, Sho Takeda, Tetsuya Uchimoto, Takayuki Ishibashi
    • Organizer
      The 19th International Conference on Flow Dynamics (ICFD2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Diffusion of Water in Epoxy Ionic Liquid Composite Polymer cured and its Effect on Dielectric and Mechanical Properties2022

    • Author(s)
      OLLIVIER-LAMARQUE Lucas, Tetsuya UCHIMOTO, Nicolas Mary, Sebastien Livi
    • Organizer
      ELyT workshop 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] PCBプローブを用いた渦電流探傷法による炭素繊維ミスアライメント評価2022

    • Author(s)
      田中 洸大,内一 哲哉,武田 翔,小助川 博之,井上 甚,渡邊 佳正
    • Organizer
      第34回「電磁力関連のダイナミクス」シンポジウム (SEAD34)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 渦電流試験を用いたCFRPの繊維ミスアライメント評価2022

    • Author(s)
      佐々木啓, 田中洸大, 武田翔, 内一哲哉
    • Organizer
      NDEフォーラム2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] 渦電流試験を用いたフィラメントワインディング成形CFRPの繊維分布評価2022

    • Author(s)
      田中洸大,瀬戸顕文,内一哲哉,武田翔,小助川博之,高木敏行,渡邊健,漆山雄太,土山友輔
    • Organizer
      一般社団法人日本複合材料学会 第 47 回複合材料シンポジウム
    • Related Report
      2022 Annual Research Report

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Published: 2022-04-19   Modified: 2025-12-26  

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