Non-contact EMAR measurement of neutron-irradiated RPV steels

2009 Fiscal Year Final Research Report

• Project/Area Number: 19686058
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Nuclear engineering
• Research Institution: Iwate University
• Principal Investigator: KAMADA Yasuhiro Iwate University, 工学部, 准教授 (00294025)
• Project Period (FY): 2007 – 2009
• Keywords: 照射脆化 / 超音波 / 格子欠陥 / 金属物性 / 非破壊検査

Research Abstract

EMAR measurement system for neutron-irradiated materials was developed. Systematical experiments using thermally-aged Fe-Cu alloys clarified the relation between EMAR characteristics and matrix structural changes during Cu precipitation process. Using the measurement system at hot-lab facilities, EMAR characteristics of neutron-irradiated RPV steels were examined and the feasibility of EMAR method for nondestructive evaluation of irradiation embrittlement was discussed.

Research Products

• [Journal Article] Elastic properties of thermally aged Fe-Cu model alloys measured by EMAR method (2009)
  • Author(s): Y.Kamada, T.Ohtani, H.Kikuchi, S.Kobayashi
  • Journal Title: Studies in Applied Electromagnetic and Mechanics Vol.32 Pages: 266-270
  • Peer Reviewed
• [Journal Article] 中性子照射した圧力容器鋼の磁気・超音波特性 (2009)
  • Author(s): 鎌田康寛, 菊池弘昭, 小林悟, 荒克之, 越後谷淳一
  • Journal Title: 非破壊検査 No.9 Pages: 380-38
• [Journal Article] Evaluation of irradiation embrittlement in RPV steels by EMAR method (2009)
  • Author(s): Y.Kamada, 他3名
  • Journal Title: Proc.Symposium on Ultrasonic Electronics Vol.30 Pages: 19-20
• [Journal Article] 電磁超音波共鳴法による熱時効Fe-Cu合金のCu析出挙動評価 (2009)
  • Author(s): 鎌田康寛, 菊池弘昭, 小林悟, 大谷俊博
  • Journal Title: 超音波テクノ Vol.21,no.6 Pages: 87-90
• [Journal Article] 圧力容器鋼の照射脆化と超音波特性 (2008)
  • Author(s): 鎌田康寛
  • Journal Title: 検査技術 13 Pages: 50-54
• [Journal Article] Creep-induced microstructural change and acoustic characteri zation in a Cr-Mo-V steel (2008)
  • Author(s): T.Ohtani, F.Yin, Y.Kamada
  • Journal Title: JJAP Vol.47,No.5B Pages: 3916-3921
  • Peer Reviewed
• [Journal Article] Copper precipitation process of thermally aged Fe-Cu alloys evaluated by EMAR method (2008)
  • Author(s): Y.Kamada, 他4名
  • Journal Title: Proc.Symposium on Ultrasonic Electronics Vol.29 Pages: 49-50
• [Presentation] 中性子照射脆化した圧力容器鋼・モデル合金の超音波共鳴特性 (2010)
  • Author(s): 鎌田康寛, 他6名
  • Organizer: 第17回超音波による非破壊評価シンポジウム
  • Place of Presentation: きゅりあんホール, 東京
  • Year and Date: 2010-01-29
• [Presentation] Comparison of round-robin NDE results on impact test pieces of model specimens simulating irradiation embrittlement (2009)
  • Author(s): Y. Kamada, 他7名
  • Organizer: 13th APCNDT
  • Place of Presentation: PACIFICO Yokohama
  • Year and Date: 2009-11-11
• [Presentation] 中性子照射した圧力容器鋼およびモデル合金の弾性定数の超音波共鳴法による測定 (2009)
  • Author(s): 鎌田康寛, 他6名
  • Organizer: 日本機械学会年次大会
  • Place of Presentation: 岩手大学, 盛岡
  • Year and Date: 2009-09-16
• [Presentation] 電磁超音波共鳴法によるFe-Cuモデル合金の時効析出挙動の評価 (2009)
  • Author(s): 千種成彦, 鎌田康寛, 他3名
  • Organizer: 日本機械学会年次大会
  • Place of Presentation: 岩手大学, 盛岡
  • Year and Date: 2009-09-16
• [Presentation] Round-robin NDE testing for charpy impact specimens of cold-rolled and thermally aged Fe1wt. %Cu alloys (2008)
  • Author(s): Y. Kamada, 他5名
  • Organizer: 17th WCNDT
  • Place of Presentation: 上海, 中国
  • Year and Date: 20081025-20081028
• [Presentation] FeCu合金およびS15C鋼のラウンドロビン試験-超音波特性- (2008)
  • Author(s): 鎌田康寛, 他3名
  • Organizer: 日本鉄鋼協会春季講演大会, フォーラムシンポジウム
  • Place of Presentation: 武蔵工業大学, 東京
  • Year and Date: 2008-03-27