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A study for reducing inspection time of active thermographic non-destructive testing on the basis of thermal wave theory

Research Project

Project/Area Number 17K01296
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Social systems engineering/Safety system
Research InstitutionThe University of Tokushima

Principal Investigator

ISHIKAWA Masashi  徳島大学, 大学院社会産業理工学研究部(理工学域), 講師 (10635254)

Co-Investigator(Kenkyū-buntansha) 小山 昌志  明星大学, 理工学部, 准教授 (00453829)
笠野 英行  日本大学, 工学部, 准教授 (20514417)
八田 博志  国立研究開発法人宇宙航空研究開発機構, 宇宙科学研究所, 名誉教授 (90095638)
宇都宮 真  国立天文台, JASMINEプロジェクト, 研究支援員 (70450707)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords非破壊検査 / 赤外線サーモグラフィ / 熱波動 / コンクリート / CFRP / 伝熱 / 土木材料
Outline of Final Research Achievements

To reduce the inspection time of active thermographic non-destructive inspection, we tried to use thermal waves with higher frequency components which has higher heat propagation speed. Experiments for specimens with an artificial defect showed that the required inspection time to detect the defect was reduced by increasing the heating frequency, i.e., by increasing the frequency of input thermal waves. On the other hand, it was also found that the attenuation of thermal wave was drastically increased by increasing its frequency. These results imply that there is a practical limit to shorten the inspection time on the basis of the thermal wave theory. If larger amount of thermal waves with high frequency components could be excited, the inspection time could be shorter; however, it is practically difficult because of the maximum output power of the heat source used or the heat resistant temperature of the tested materials.

Academic Significance and Societal Importance of the Research Achievements

本研究では赤外線アクティブサーモグラフィ検査に際してしばしば課題となる検査時間の問題の解決を目指す社会的な意義と、その過程において検査の背景にある熱波動の物理を検証する学術的な意義の両面を課題とした。学術的意義としては、熱波動の伝播速度の変化を実験的に確認し、その効果がアクティブサーモグラフィ検査においても反映されることを明らかにした。また社会的意義としては、本観点を踏まえて検査方法(加熱方法)を工夫することで、検査時間の短時間化に一定の効果があることを示した。これらの結果の一方で、現状では本観点から実現可能な検査の短時間化には限界があり、これの克服が次の学術的・社会的な課題であると言える。

Report

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

    (11 results)

All 2020 2019 2018

All Presentation (11 results) (of which Int'l Joint Research: 6 results)

  • [Presentation] Consideration of input thermal wave frequency for minimizing inspection time of active thermography2020

    • Author(s)
      Masashi Ishikawa, Sou Ishihara, Hideo Nishino, Masashi Koyama, Hideyuki Kasano, Hiroshi Hatta, Shin Utsunomiya
    • Organizer
      The 15th Conference on Quantitative InfraRed Thermography (QIRT2020)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] An attempt to shorten the inspection time of active thermography method2020

    • Author(s)
      Sou Ishihara, Masashi Ishikawa, Hideo Nishino, Masashi Koyama, Hideyuki Kasano, Hiroshi Hatta, Shin Utsunomiya
    • Organizer
      The 15th Conference on Quantitative InfraRed Thermography (QIRT2020)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] アクティブサーモグラフィ検査に要する時間と加熱方法との関係に関する熱波動の観点を踏まえた検討2020

    • Author(s)
      石原 壮, 石川 真志, 西野 秀郎, 小山 昌志, 笠野 英行
    • Organizer
      日本非破壊検査協会 2020年度非破壊検査総合シンポジウム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Relationship between inspection time and frequency components of input and reflected thermal waves in active thermographic non-destructive inspection2019

    • Author(s)
      Masashi Ishikawa, Sou Ishihara, Hideo Nishino, Masashi Koyama, Hideyuki Kasano, Hatta Hiroshi, Utsunomiya Shin
    • Organizer
      International Workshop on Advanced Infrared Technology and Applications (AITA 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reducing inspection time of active thermographic non-destructive testing based on thermal wave theory2019

    • Author(s)
      Masashi Ishikawa, Masashi Koyama, Hideyuki Kasano, Ryo Fukui, Hiroshi Hatta, Shin Utsunomiya, Hideo Nishino
    • Organizer
      The 3rd Asian Conference on Quantitative Infrared Thermography (QIRT-Asia 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 高周波熱波動を利用したアクティブサーモグラフィ検査の検査時間短縮2019

    • Author(s)
      石原 壮, 石川 真志, 西野 秀郎, 小山 昌志, 笠野 英行, 八田 博志, 宇都宮 真
    • Organizer
      日本機械学会 2019年度年次大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] アクティブサーモグラフィ検査における熱波動特性を利用した検査時間の短縮2019

    • Author(s)
      石原 壮, 石川 真志, 小山 昌志, 笠野 英行, 八田 博志, 宇都宮 真, 西野 秀郎
    • Organizer
      日本設計工学会 四国支部 平成30年度 特別講演会・研究発表講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] フーリエ変換による位相画像変換を利用したアクティブサーモグラフィ検査2018

    • Author(s)
      石川 真志, 小山 昌志, 笠野 英行
    • Organizer
      日本非破壊検査協会 平成30年度非破壊検査総合シンポジウム
    • Related Report
      2018 Research-status Report
  • [Presentation] Reduced inspection time in active thermographic non-destructive testing of low-thermal-conductivity materials2018

    • Author(s)
      Masashi Ishikawa, Masashi Koyama, Hideyuki Kasano, Hiroshi Hatta, Shin Utsunomiya
    • Organizer
      14th Quantitative InfraRed Thermography Conference (QIRT 2018),
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] フーリエ変換による位相画像変換を利用したアクティブサーモグラフィ検査2018

    • Author(s)
      石川真志,小山昌志,笠野英行
    • Organizer
      平成30 年度 非破壊検査総合シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] Reduced inspection time in active thermographic non-destructive testing of low-thermal-conductivity materials2018

    • Author(s)
      Masashi Ishikawa, Masashi Koyama, Hideyuki Kasano, Hiroshi Hatta, Shin Utsunomiya
    • Organizer
      Quantitative InfraRed Thermography (QIRT) 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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