Development of innovative non-destructive methods for the evaluation of the structural integrity using broadband electromagnetic fields

• Project/Area Number: 23760684
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Material processing/treatments
• Research Institution: Tohoku University
• Principal Investigator: YUSA Noritaka 東北大学, 大学院・工学研究科, 准教授 (60466779)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 材料評価 / 非破壊検査 / 電磁非破壊検査 / 国際研究者交流 / 中国 / 国際情報交流

Research Abstract

This study developed a method to significantly enhance the information contained in signals of non-destructive methods using time-dependent electromagnetic fields. Numerical simulations and experimental verifications were carried out to fully reveal the physical background of the method applied to kHz electromagnetic fields. They also evaluated the applicable limit of the method, and confirmed that the magnetic property of the target would enable to make probes smaller. Studies for the application to GHz electromagnetic fields demonstrated that controlling electromagnetic fields leads to a significant improvement of signal-to-noise ratio.

Research Products

• [Journal Article] 渦電流探傷試験における熱疲労割れの数値モデリング (2012)
  • Author(s): 遊佐訓孝、橋爪秀利、Iikka Virkkunen、Mika Kemppainen
  • Journal Title: 保全学 Volume: 11巻 Pages: 73-78
  • NAID: 40019462991
  • Peer Reviewed
• [Presentation] Development on microwave nondestructive testing of a wall thinning inside a pipe by optimizing microwave probe and analyzing wall thinning profile (2012)
  • Author(s): Kota Sasaki, Linsheng Liu, Noritaka Yusa, Takashi Wakai, Hidetoshi Hashizume
  • Organizer: 1st International Conference on Maintenance Science and Technology Tokyo 2011
  • Place of Presentation: 東京大学
  • Year and Date: 2012-11-13
• [Presentation] A novel approach of microwaves on remote and nondestructive detection of both gradual and abrupt wall thinning inside a metal pipe (2012)
  • Author(s): Linsheng Liu, Kota Sasaki, Noritaka Yusa, Hidetoshi Hashizume
  • Organizer: Ninth International Conference on Flow Dynamics
  • Place of Presentation: 仙台
  • Year and Date: 2012-09-20
• [Presentation] 強度変調複合電磁場を用いた渦電流探傷法による鉄鋼材料表面きず深さ評価 (2012)
  • Author(s): 遊佐訓孝、橋爪秀利
  • Organizer: 日本鉄鋼協会第165回秋季講演大会
  • Place of Presentation: 愛媛大学
  • Year and Date: 2012-09-18
• [Presentation] Application of microwaves on remote and nondestructive testing of both biofouling and wall thinning inside a metal pipe (2012)
  • Author(s): Linsheng Liu, Kota Sasaki, Noritaka Yusa, Hidetoshi Hashizume
  • Organizer: 日本保全学会第9回学術講演会
  • Place of Presentation: 東京
  • Year and Date: 2012-07-26
• [Presentation] 配管減肉に対するマイクロ波探傷法の口径依存性評価 (2012)
  • Author(s): 佐々木幸太、遊佐訓孝、橋爪秀利
  • Organizer: 第17回動力・エネルギー技術シンポジウム
  • Place of Presentation: 九州大学
  • Year and Date: 2012-06-22
• [Presentation] Application of microwaves on remote and nondestructive testing of both biofouling and wall thinning inside a metal pipe (2012)
  • Author(s): Linsheng Liu, Kota Sasaki, Noritaka Yusa, Hidetoshi Hashizume
  • Organizer: 日本保全学会第９回学術講演会
  • Place of Presentation: 東京
• [Presentation] 熱疲労割れの直流電位差法による測定及び分析 (2012)
  • Author(s): 遊佐訓孝、王晶、藩紅良、橋爪秀利、Mika Kemppainen、Iikka Virkkunen
  • Organizer: 日本保全学会第９回学術講演会
  • Place of Presentation: 東京
• [Presentation] 強度変調複合電磁場を用いた渦電流探傷法による鉄鋼材料表面きず深さ評価 (2012)
  • Author(s): 遊佐訓孝、橋爪秀利
  • Organizer: 日本鉄鋼協会第１６５回秋季講演大会
  • Place of Presentation: 愛媛大学
• [Presentation] Development on microwave nondestructive testing of a wall thinning inside a pipe by optimizing microwave probe and analyzing wall thinning profile (2012)
  • Author(s): Kota Sasaki, Linsheng Liu, Noritaka Yusa, Takashi Wakai, Hidetoshi Hashizume
  • Organizer: 1st International Conference on Maintenance Science and Technology Tokyo 2012
  • Place of Presentation: 東京
• [Presentation] Microwave NDT method utilized for remote distinction of biofouling and wall thinning defects inside a metal pipe (2012)
  • Author(s): Linsheng Liu, Kota Sasaki, Noritaka Yusa, Hidetoshi Hashizume
  • Organizer: 第21回MAGDAコンファレンス
  • Place of Presentation: 仙台