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*YASUYUKI MIYANO
Faculty of Engineering Science, Akita University
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Rintaro Ueji
Joining and Welding Institute, Osaka University
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Osamu Kamiya
Faculty of Engineering Science, Akita University
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Ryou Okubo
Faculty of Engineering Science, Akita University
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Hidetoshi Fujii
Joining and Welding Institute, Osaka University