研究者業績

福岡 克弘

フクオカ カツヒロ  (Katsuhiro Fukuoka)

基本情報

所属
大阪産業大学 工学部交通機械工学科 教授
学位
博士(工学)(東京大学)

J-GLOBAL ID
200901065255839090
researchmap会員ID
6000015527

外部リンク

論文

 57
  • 福岡克弘
    日本AEM学会誌 Vol.28(No.2) 63-68 2020年8月  査読有り
    2020年度日本AEM学会技術賞 受賞
  • Tatsuya Chikami, Katsuhiro Fukuoka
    International Journal of Applied Electromagnetics and Mechanics 59(4) 1331-1339 2019年  査読有り
    © 2019 IOS Press and the authors. All rights reserved. In this study, we developed and characterised a method for detecting microcracks in steel materials by eddy current testing (ECT). Magnetic saturation ECT is applied because magnetic noise is generated by steel materials during ECT. Although direct-current (DC) magnetisation is generally used for magnetic saturation ECT, the use of alternate-current (AC) magnetisation offers several advantages. When using AC magnetisation for surface flaw detection, the magnetisation is not influenced by the thickness of the test object owing to the skin effect; therefore, demagnetisation is unnecessary. In this study, we evaluated microcrack detection results obtained using AC magnetisation ECT with different synchronous positions (conditions) of the magnetisation and ECT; and identified the optimum synchronous position. In addition, the magnetisation distribution in a test object was evaluated by the finite element method analysis and the flaw detection results were verified.
  • Katsuhiro Fukuoka, Ryo Hasegawa
    International Journal of Applied Electromagnetics and Mechanics 59(4) 1267-1274 2019年  査読有り
    © 2019 IOS Press and the authors. All rights reserved. Non-uniform permeability distributions in steel materials reduce signal-to-noise (S/N) ratios in eddy current testing (ECT). Therefore, steel materials must be magnetised to reduce magnetic noise. In this study, microcrack detection in spring steel materials using ECT was considered. An ECT system that was able to detect 40-μm-deep crack with S/N ratio of 3 or more was developed. In addition, the depth profile of microcracks using the detection signal was accurately estimated.
  • Katsuhiro Fukuoka, Masaki Kobayashi, Tomohiro Ozaki, Yoshiro Oikawa
    Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) 204(4) 36-42 2018年9月  査読有り
    © 2018 Wiley Periodicals, Inc. Mechanical parts, plants, and cross-linkages inspected with magnetic-particle testing (MT) are typically complex 3D shapes. In complex 3D shape portions, because a magnetizer often cannot be configured to inspection portions and the test object cannot be appropriately magnetized, there is a possibility of overlooking a crack in such an instance. Thus, MT system development that was successfully able to detect omnidirectional cracks in 3D shape portions was considered in this study's trials. Two multi-coil type magnetizers were hence arranged face-to-face, and the magnetization of omnidirectional scenarios for all surfaces of 3D shape test object was evaluated.

MISC

 58

書籍等出版物

 4

講演・口頭発表等

 223

担当経験のある科目(授業)

 10

共同研究・競争的資金等の研究課題

 18

産業財産権

 6

研究テーマ

 3
  • 研究テーマ
    高温超電導体の磁気特性評価と超電導応用機器の開発
    研究期間(開始)
    1993/04/01
  • 研究テーマ
    渦電流試験の高精度化と欠陥の定量的評価に関する研究
    研究期間(開始)
    1999/04/01
  • 研究テーマ
    磁粉探傷試験の高精度化と欠陥の定量的評価に関する研究
    研究期間(開始)
    2007/04/01

免許・資格

 2
  • 免許・資格名
    JIS Z 2305 非破壊試験技術者資格 
    取得年月日
    2016/04/01
    概要
    磁粉探傷試験・レベル3
  • 免許・資格名
    職業訓練指導員免許
    取得年月日
    1994/05/01
    概要
    (電気科、電気工事科、送配電科、メカトロニクス科、コンピュータ制御科、電子科)