Affiliation: | 1. Faculty of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;2. Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan;3. Yawata R & D Lab., Nippon Steel & Sumitomo Metal Co., 1-1 Tobihatacho Tobata-ku, Kitakyushu 804-8501, Japan |