1. Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimo, Kagoshima 890-0065, Japan (Corresponding author), e-mail: komazaki@mech.kagoshima-u.ac.jp, https://orcid.org/0000-0002-4945-4260
2. Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimo, Kagoshima 890-0065, Japan
3. Institute of Nuclear Safety System, Inc., 64 Sata Mihama-cho, Mikata-gun, Fukui 919-1205, Japan, https://orcid.org/0000-0002-7237-0145
4. Kobe Material Testing Laboratory, Co., Ltd., 47-13 Niijima Harima-cho, Kako-gun, Hyogo 675-0155, Japan, https://orcid.org/0000-0001-6422-1830
5. Kobe Material Testing Laboratory, Co., Ltd., ASANO Building 101, 4-10-3 Higashiueno, Taito-ku, Tokyo 110-0015, Japan, https://orcid.org/0000-0003-1028-1937