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FMCW digital holographic method to achieve stress analysis for multilayer coating films

Research Project

Project/Area Number 18K04165
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 21030:Measurement engineering-related
Research InstitutionShimane University

Principal Investigator

Yokota Masayuki  島根大学, 学術研究院理工学系, 教授 (80323335)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2018: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywordsディジタルホログラフィ / FMCW / 多重化 / 塗膜の硬化過程 / 偏光の記録と解析 / DH / UV硬化接着剤 / 偏光解析 / 硬化解析 / 外部共振器型LD / FMCW法
Outline of Final Research Achievements

By introducing the frequency modulation continuous wave (FMCW) technology that modulates the frequency of the laser light source into digital holography, it has become possible to discriminate and analyze a large number of objects. The conditions for discriminating objects were investigated by experiments and numerical calculations. We also proposed a method for analyzing the polarization state of object light by multiplexing the optical path length of the reference light to obtain an orthogonal linearly polarized light. We conducted an experiment to analyze both the instantaneous change of the UV curable adhesive and the long-term curing characteristics, and proposed a new evaluation method for the curing characteristics of the adhesive.

Academic Significance and Societal Importance of the Research Achievements

ディジタルホログラフィによる干渉計測法では,その逐次解析により塗膜の乾燥や硬化過程の評価が可能になる。提案法では,ディジタルホログラフィにFMCW技術を導入することにより所望の位置にある物体だけを選択的に解析することが可能になる。また,選択的な像再生から多層塗膜などへの応用や光路長の多重化による参照光の多重化を図り,これによる物体光の偏光状態の解析などを可能にする。これらにより,従来の塗膜乾燥評価において,多層塗膜への適用や塗膜内の応力の変化などを解析することが可能になる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (10 results)

All 2021 2019 2018

All Presentation (10 results) (of which Int'l Joint Research: 6 results)

  • [Presentation] FMCW-ディジタルホログラフィを用いた偏光解析による物体の応力可視化2021

    • Author(s)
      青木善伸,横田正幸
    • Organizer
      一般社団法人レーザー学会学術講演会第41回年次大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effects of both light intensity variation and frequency modulation bandwidth of a light source on reconstructed images in FMCW-digital holography2019

    • Author(s)
      Y. Aoki, T. Ishikawa and M. Yokota
    • Organizer
      Information Photonics 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Polarization analysis of the object wave using FMCW-digital holography2019

    • Author(s)
      M. Yokota, T. Ishikawa, and Y. Aoki
    • Organizer
      2019 Optical Metrology
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Polarization state of the object wave analyzed by using FMCW-digital holography2019

    • Author(s)
      M. Yokota, T. Ishikawa and Y. Aoki
    • Organizer
      13th Japan-Finland Joint Symposium on Optics in Engineering
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] FMCWディジタルホログラフィを用いた偏光解析の研究2019

    • Author(s)
      青木善伸,横田正幸
    • Organizer
      日本光学会年次学術講演会2019
    • Related Report
      2019 Research-status Report
  • [Presentation] Effects of both light intensity variation and frequency modulation bandwidth of a light source on reconstructed iamges in FMCW-digital holography2019

    • Author(s)
      Y. Aoki, T. Ishikawa, M. Yokota
    • Organizer
      Information photonics 2019
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] FMCW法を用いたディジタルホログラフィにおける2物体分離度の数値計算による検討2018

    • Author(s)
      青木善信,石川達也,内田研,横田正幸
    • Organizer
      第20回IEEE広島支部学生シンポジウム(HISS20)
    • Related Report
      2018 Research-status Report
  • [Presentation] FMCWディジタルホログラフィにおける選択的像再生条件の検討2018

    • Author(s)
      石川達也,横田正幸
    • Organizer
      日本光学会年次学術講演会2018(OPJ2018)
    • Related Report
      2018 Research-status Report
  • [Presentation] Investigation of the distance resolution in FMCW-digital hologprahy2018

    • Author(s)
      T. Ishikawa, T. Uchida and M. Yokota
    • Organizer
      International symposium on Imaging, Sensing, and Optical Memory 2018 (ISOM2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Selective object image reconstruction using FMCW-digital holography2018

    • Author(s)
      T. Ishikawa, Yoshinobu Aoki and M. Yokota
    • Organizer
      3rd International Symposium of Gunma University Medical Innovation and 8th International Conference on Advanced Micro-Device Engineering (GUMI&AMDE2018)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2022-01-27  

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