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Electromagnetic nondestructive evaluation of FRP adhesive interface debonding by using conductive DLC as built-in type probe

Research Project

Project/Area Number 16H04287
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionTohoku University

Principal Investigator

Takagi Toshiyuki  東北大学, 流体科学研究所, 教授 (20197065)

Co-Investigator(Kenkyū-buntansha) 小助川 博之  東北大学, 流体科学研究所, 助教 (00709157)
内一 哲哉  東北大学, 流体科学研究所, 教授 (70313038)
三木 寛之  東北大学, 学際科学フロンティア研究所, 准教授 (80325943)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2017: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2016: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Keywords導電性ダイヤモンドライクカーボン / 繊維強化プラスチック / 渦電流探傷試験 / 接着接合 / 電磁非破壊評価 / 磁性ナノ粒子 / 多層構造 / 保全 / 渦電流探傷法 / 電磁センサ / 非接触型インジケータ / 多層薄膜 / 接着強度 / 炭素繊維強化プラスチック
Outline of Final Research Achievements

Diamond-like carbon in which cobalt, which is a ferromagnetic element, is dispersed in nano clusters is introduced into the adhesive bonding interface of fiber reinforced plastic (FRP). By measuring the change of eddy current signals of Co-DLC on bonding interface with eddy current testing (ECT), which is one of electromagnetic nondestructive evaluation methods, nondestructive evaluation of the failure generated in the FRP adhesive bonding interface is enabled. It was revealed that even if the ECT probe is 10 mm away from Co-DLC, the damage caused to Co-DLC can be sufficiently detected. Although the adhesive strength decreased by 18% by introducing Co-DLC, the feasibility of this method is expected as a method that enables nondestructive evaluation of adhesive bonding.

Academic Significance and Societal Importance of the Research Achievements

軽量かつ高強度・高剛性で、化学的にも安定であるFRPを接合して構造部材に利用しようとする例が増えているが、応力の分散や軽量化という点で優れる接着接合は保全の難しさから敬遠され、力学的に非合理的な機械接合を採用することが多かった。本研究の成果により接着接合面の損傷評価が可能となることで接着接合を採用する判断ができるようになり、大型構造物のさらなる軽量化と設計の合理化を図ることができるようになる。
一方、導電性DLCはセンサとしての機能が注目され研究が進められていたが、本研究成果のように非破壊評価に利用するアイデアはこれまでなかった。本研究成果によりDLCを用いた保全技術の新しい展開が期待される。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (12 results)

All 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Peer Reviewed: 1 results) Presentation (9 results) (of which Int'l Joint Research: 7 results)

  • [Int'l Joint Research] 天津大学(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 導電性DLCのひずみセンサおよび疲労センサへの応用2018

    • Author(s)
      小助川博之, 三木寛之, 高木敏行
    • Journal Title

      NEW DIAMOND 第130号

      Volume: 34(3) Pages: 32-35

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Structure and electrical properties of molybdenum-containing diamond-like2017

    • Author(s)
      Hiroyuki Kosukegawa, Sophia Berkani, Hiroyuki Miki, Toshiyuki Takagi
    • Journal Title

      Diamond & Related Materials

      Volume: 80 Pages: 38-44

    • DOI

      10.1016/j.diamond.2017.09.018

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Presentation] Evaluation of Structural and Electric/magnetic Properties of Cobalt-containing DLC Film for Magnetic Device Application2018

    • Author(s)
      Hiroyuki Kosukegawa, Satoshi Yamazaki, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      International Conference on Diamond and Carbon Materials 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Structure and Electromagnetic Properties of Cobalt-containing DLC for Magnetic Device Application2018

    • Author(s)
      Zhuo Diao, Hiroyuki Kosukegawa, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      Fifteenth International Conference on Flow Dynamics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic and Electric Properties of Diamond Like Carbon-Magnetic Metal Nano-composite Films2018

    • Author(s)
      Yiweng Zhang, Hiroyuki Kosukegawa, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      The Eighteenth International Symposium on Advanced Fluid Information
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 強磁性金属含有DLC薄膜の電磁的・機械的特性評価2018

    • Author(s)
      山﨑哲, 小助川博之, 三木寛之, 高木敏行
    • Organizer
      日本機械学会東北支部第53期総会・講演会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 強磁性元素を導入した非晶質炭素薄膜の作製と電磁特性の評価2017

    • Author(s)
      山﨑哲, 小助川博之, 三木寛之, 高木敏行
    • Organizer
      安全・安心な社会を築く先進材料・非破壊計測技術シンポジウム【函館】
    • Place of Presentation
      サン・リフレ函館(北海道・函館市)
    • Year and Date
      2017-03-13
    • Related Report
      2016 Annual Research Report
  • [Presentation] Relationship between structure and electrical properties of molybdenum-containing DLC2017

    • Author(s)
      Hiroyuki Kosukegawa, Sophia Berkani, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      11th International Conference on New Diamond and Nano Carbons 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Electromagnetic Properties and Structure of Cobalt-containing DLC Fabricated by Hybrid Deposition Technique2017

    • Author(s)
      Satoshi Yamazaki, Hiroyuki Kosukegawa, Yiwen Zhang, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      11th International Conference on New Diamond and Nano Carbons 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Electromagnetic Properties and Morphology of Cobalt-containing Diamond-like Carbon Aiming for Magnetic Sensor2017

    • Author(s)
      Satoshi Yamazaki, Hiroyuki Kosukegawa, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      Fourteenth International Conference on Flow Dynamics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of Electromagnetic Properties of Cobalt-containing DLC Fabricated by Using Hybrid PECVD and DC Sputtering Technique2016

    • Author(s)
      Satoshi Yamazaki, Hiroyuki Kosukegawa, Hiroyuki Miki, Toshiyuki Takagi
    • Organizer
      Thirteenth International Conference on Flow Dynamics
    • Place of Presentation
      Sendai
    • Year and Date
      2016-10-10
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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