*Koki Matsumoto¹, Taiki Miyama¹, Kenichi Takemura¹, Tatsuya Tanaka² (1. Kanagawa University, 2. Doshisha University)

*Koichi Kimura¹, Yasuya Nakayama², Taishi Fujihara², Toshihisa Kajiwara² (1. The Japan Steel Works, Ltd., 2. Kyushu University)

*Tomoya Oda¹, Tasuku Okimoto¹, Yohei Fukuzawa¹, Daisuke Fukuzawa², Hideki Tomiyama¹ (1. The Japan Steel Works Co., Ltd., 2. SIMLON Co., Ltd. )

*Takeaki Ohshita¹, Takayuki Hirano¹, Jun Suzuki¹, Mikio Furokawa¹, Atsutoshi Muto¹ (1. THE JAPAN STEEL WORKS, LTD.)