Akira Onuma
Hitachi
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Publication
Featured researches published by Akira Onuma.
Japanese Journal of Applied Physics | 2002
Jin Onuki; Yoshisa Anazawa; Masayasu Nihei; Mitsuo Katou; Akira Onuma; Takao Funamoto
A new power source, able to generate high-frequency, up to 20 kHz, and high-peak pulse current, up to 500 A, has been developed. By using the new power source, arc pressure and bead depth 3 times as high and twice as deep as those obtained from the DC power source were obtained. The new power source achieved a stable arc in a narrow groove with high aspect ratio due to high constriction. Welding speeds using the new power source are twice as fast as the DC arc.
Archive | 1996
Tsutomu Onuma; Toshimi Matsumoto; Akira Onuma; Mitsuo Nakamura; Choichi Asano; Yasumasa Tamai; Hiroo Koide; Masayuki Kurihara; Takao Funamoto; Fuminori Ishikawa
Archive | 1995
Keiichi Uraki; Toshitaka Satsuta; Akira Onuma; Mitsuo Nakamura; Tsutomu Onuma; Toshimi Matsumoto; Yasumasa Tamai; Hiroshi Yamauchi; Eisaku Hayashi; Ren Morinaka
Archive | 1981
Masayasu Nihei; Satoshi Kokura; Eiji Ashida; Yuzo Kozono; Akira Onuma
Archive | 1995
Tetsuya Okai; Moriaki Fuyama; Akira Onuma; Eiji Ashida; Hiroshi Ikeda; Saburo Suzuki; Yasuo Wakaki; Yoshiki Hagiwara; Eimi Ando
Archive | 1998
Masayasu Nihei; Jin Onuki; Takao Funamoto; Izumi Sakurai; Akira Onuma
Archive | 1995
Keiichi Uraki; Hisanori Okamura; Toshimi Matsumoto; Toshitaka Satsuta; Mitsuo Nakamura; Akira Onuma; Tsutomu Onuma; Takahiko Kato; Junya Kaneda; Kunihiko Suzuki
Archive | 1998
Takao Funamoto; Masayasu Nihei; Jin Onuki; Akira Onuma; Izumi Sakurai
Archive | 1998
Masayasu Nihei; Jin Onuki; Takao Funamoto; Izumi Sakurai; Akira Onuma
Archive | 1981
Ryoichi Kajiwara; Satoshi Kokura; Yuzo Kozono; Akira Onuma
