Yasuharu Sakuma
Nippon Steel
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Featured researches published by Yasuharu Sakuma.
PROCEEDINGS OF IBEC 2003 (INTERNATIONAL BODY ENGINEERING CONFERENCE), HELD OCTOBER 2003, CHIBA, JAPAN | 2003
Yasuharu Sakuma; Shunji Hiwatashi; Hatsuhiko Oikawa
Experimental study on static strength of spot-welds for high-strength steel sheets is summarized, focusing on thicker and coated sheets. Tensile shear strength (TSS) increases with sheet strength and thickness. Cross tensile strength (CTS) also increases, but the variation with sheet strength is small. Welding with expulsion deteriorates CTS, especially for thicker or coated sheets with higher strength or carbon content. Blow-holes and shrinkage cavities are found frequently at thicker sheet welds, and their existence near nugget edge reduces CTS. Above-mentioned knowledge leads developments of galvannealed sheets with carbon content less than 0.1% for tensile strength up to 180MPa. (A) For the covering abstract see ITRD E121867.
Archive | 1997
Osamu Kawano; Yuzo Takahashi; Junichi Wakita; Hidesato Mabuchi; Manabu Takahashi; Akihiro Uenishi; Riki Okamoto; Yukihisa Kuriyama; Yasuharu Sakuma
Archive | 2010
Masafumi Azuma; Noriyuki Suzuki; Naoki Maruyama; Akinobu Murasato; Yasuharu Sakuma; Hiroyuki Kawata; Chisato Wakabayashi
Archive | 2004
Naoki Yoshinaga; Shunji Hiwatashi; Yasuharu Sakuma; Atsushi Itami
Archive | 1995
Kazuo Koyama; Matsuo Usuda; Manabu Takahashi; Yasuharu Sakuma; Shunji Hiwatashi; Kaoru Kawasaki
Archive | 2009
Masafumi Azuma; Naoki Yoshinaga; Naoki Maruyama; Noriyuki Suzuki; Yasuharu Sakuma
Archive | 1998
Osamu Kawano; Junichi Wakita; Yuzo Takahashi; Hidesato Mabuchi; Manabu Takahashi; Akihiro Uenishi; Yukihisa Kuriyama; Riki Okamoto; Yasuharu Sakuma
Archive | 2010
Masafumi Azuma; Noriyuki Suzuki; Naoki Maruyama; Akinobu Murasato; Yasuharu Sakuma; Hiroyuki Kawata; Chisato Wakabayashi
Archive | 2009
Masafumi Azuma; Naoki Yoshinaga; Naoki Maruyama; Noriyuki Suzuki; Yasuharu Sakuma
Archive | 2003
Yasuharu Sakuma; Hatsuhiko Oikawa
