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Development of a multi-axis X-ray CT for highly accurate inspection of electronic devices

Research Project

Project/Area Number 17K18188
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Measurement engineering
Dynamics/Control
Research InstitutionTokyo University of Science (2019)
Tokyo University of Technology (2017-2018)

Principal Investigator

Kano Toru  東京理科大学, 工学部情報工学科, 助教 (40781620)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords非破壊検査 / X線CT / メタルアーチファクト / 計測 / 画像再構成 / 計測工学 / X線CT
Outline of Final Research Achievements

As an established non-destructive diagnostic/inspection technique, X-ray CT has been pervasive in our lives. However, when inspecting electronic devices that contain many metallic components, a strong radial noise called metal artifacts are generated from the metallic portions.
In this study, to reduce metal artifacts in X-ray CT, we proposed a multi-axis X-ray CT and the optimization algorithm of its rotation control. By rotating objects around two or three axes while avoiding overlapping metals on X-ray beams, both saturated regions in projection data and metal artifacts were effectively suppressed. Our results demonstrated that it is possible to inspect electronic devices with X-ray CT, even if they contain numerous metals.

Academic Significance and Societal Importance of the Research Achievements

X線CTは非破壊検査装置として活用されてきたが、撮影対象に金属が含まれるとメタルアーチファクトと呼ばれる激しいノイズが発生する課題が残されている。本研究では、多軸回転機構を用いた新しいX線CT撮影手法の提案により、メタルアーチファクトを抑制し、これまで困難であった電子デバイスの非破壊精密検査の実現可能性をシミュレーション上で示した。今後、実環境での実装を進めることで、金属の影響を受けない非破壊精密検査が可能となり、工業製品の欠陥特定や疲労評価、および品質向上に大いに寄与することが考えられる。さらには、検査用途だけではなく、材料科学における新たな知見の獲得に繋がることが期待される。

Report

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

    (10 results)

All 2019 2018 2017 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (7 results) (of which Int'l Joint Research: 4 results) Remarks (2 results)

  • [Journal Article] Optimization of multiple axes control for metal artifact reduction in X-ray CT2019

    • Author(s)
      Toru Kano and Michihiko Koseki
    • Journal Title

      NDT.net

      Volume: Issue 2019-03

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 多軸X線CTの画像再構成におけるエイリアシング低減に関する検討2019

    • Author(s)
      加納徹, 小関道彦
    • Organizer
      計測自動制御学会 第36回センシングフォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] X線CTにおけるメタルアーチファクト低減のための最適投影軌道の提案2019

    • Author(s)
      宮岡慧, 加納徹, 小関道彦, 赤倉貴子
    • Organizer
      計測自動制御学会 第36回センシングフォーラム
    • Related Report
      2019 Annual Research Report
  • [Presentation] Optimization of multiple axes control for metal artifact reduction in X-ray CT2019

    • Author(s)
      Toru Kano and Michihiko Koseki
    • Organizer
      The 9th Conference on Industrial Computed Tomography
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optimization of multiple axes control for metal artifact reduction in X-ray CT2019

    • Author(s)
      Toru KANO and Michihiko KOSEKI
    • Organizer
      9th Conference on Industrial Computed Tomography
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Method for Reducing Metal Artifacts in Dental CBCT2019

    • Author(s)
      Akira TAKEBAYASHI, Toru KANO, Hiroaki YAMAMOTO and Shohei KASUGAI
    • Organizer
      Academy of Osseointegration 2019 Annual Meeting
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of a Multi-axis X-ray CT for Metal Artifact Reduction2018

    • Author(s)
      Toru KANO and Michihiko KOSEKI
    • Organizer
      SICE Annual Conference 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高精度非破壊検査のための多軸X線CTの開発(姿勢制御と再構成アルゴリズムの最適化)2017

    • Author(s)
      加納 徹
    • Organizer
      計測自動制御学会 第34回センシングフォーラム
    • Related Report
      2017 Research-status Report
  • [Remarks] Kano's Page

    • URL

      https://kano.ac/

    • Related Report
      2019 Annual Research Report
  • [Remarks] [講演] 3次元内外計測コンソーシアム 第9回総会・研究会

    • URL

      https://unit.aist.go.jp/riem/dms-std/xctcons/

    • Related Report
      2017 Research-status Report

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

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