1. Research Institute for Applied Mechanics, Kyushu University, Kasuga-kouenn, Kasugashi, Fukuoka, Japan
2. Center for Technology Innovation-Materials, Hitachi, Co., Ltd., Omika, Hitachishi, Ibaragi, Japan
3. Research Department, Nippon Nuclear Fuel Development, Co., Ltd., Narita-cho, Oarai, Ibaraki, Japan
4. Research and Development Depatment, The Wakasa Wan Energy Research Center, Nagatani, Tsuruga, Fukui, Japan
5. Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga-kouen, Kasugashi, Fukuoka, Japan