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*Van Anh NGUYEN
Joining and Welding Research Institute, Osaka university
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Shinichi TASHIRO
Joining and Welding Research Institute, Osaka university
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Mikio SADAIKE
Yousetsu Techno Sadaike
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Yoshio MATSUMOTO
Matsumoto Tekkosyo Limited Liability Company
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Yoshihiro YAMAGUCHI
Komatsu Industries Corporation
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Manabu TANAKA
Joining and Welding Research Institute, Osaka university