高温機器モニタリングを目指した高温用電磁超音波 プローブの開発と評価
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カテゴリ: 第12回
.................................................. .................................................. .................................................. ....................100....300..................[1].. .................................................. .................................................. .................... 600................[2].. ................................................ .................................................. ..........................EMAT .................. .................................................. .................................................. .........., .................................... ................................................ ２．空芯パルス電磁石を用いたEMAT ....................EMAT ...................... .................................................. .................................................. .................................................. .................................................. .................................................. .................................................. .................................................. .............. ......................EMAT .... 1 .............. .................................................. .... 1.0mm ........................ 156 ............ .................................................. .......................................... 0.2mm .. .................... 23 ............................ .................................................. ............................ ３．実験方法 ................................................ .... 2000A ........................................ .................................................. ..................................EMAT ................: ............980-8577 ................ 2-1-1.......................... E-mail: uchimoto@ifs.tohoku.ac.jp - 373 - ..............................EMAT .............. .................................................. .................................................. .................................................. .................................................. ............................ 10mm ..........(SS400) ..........EMAT .................................. .......................................................................... 50........................ ...................... ４．実験結果 ................................ 2MHz ...... 3MHz .......................................... .................. 2MHz .......................... .............. 2 ........ .......................... ..................700.............................. .................................................. .................................................. ....................................(.............. 770..).............................................. .......................................... 3MHz .. ........................ 700.................... ............ ................................................ .................................................. .................................................. ................................ 3 ................ .................................................. ...... ............................................ .................................................. ................................................ .......... Fig.1 Schematic diagram of air-cored pulsed EMAT (a) Side view (b) Bottom view Fig.2 Back-wall echo signals at elevated temperature (SS400). Fig.3 Shear wave velocity of carbon steel at a range of temperatures from RT to 700℃ ５．結言 ..........................EMAT .................. ..........................................EMAT .. .................................................., ................ 700.............................. .................................................. ...., ............................................ ...................... 謝辞 ..........................................24656080 ...... ................(A....................................... ..............................).......................... ........................................................ ............................ 参考文献 [1] .................................................... ................................................Vol.11.. pp.83-89(2013) [2] F Hernandez-Valle..S Dixon..Pulsed electromagnet EMAT for ultrasonic measurements at elevated temperatures..Insight..Vol.53.. No.2..pp.96-99(2011).. [3] .........., ..: .................................... .........................., ...., .. 26 .., pp. 210-214 (1977). 2700“ “高温機器モニタリングを目指した高温用電磁超音波 プローブの開発と評価 “ “内一 哲哉,Tetsuya UCHIMOTO,高木 敏行,Toshiyuki TAKAGI,尾形 翔平,Shohei OGATA,Gerd DOBMANN