1. School of Materials Science and Engineering Hanoi University of Science and Technology No. 1, Dai Co Viet Street Hanoi 100000 Vietnam
2. Department of Civil and Environmental Engineering Tokyo Institute of Technology 2‐12‐1‐W8‐22, Ookayama Meguro‐ku Tokyo 152‐8552 Japan
3. Department of Mechanical Engineering and Science Kyoto University Nishikyo‐ku Kyoto 615‐8540 Japan