1. Graduate School of Science and Engineering Ritsumeikan University Kusatsu‐shi Shiga Japan
2. Fracture and Reliability Research Institute, Graduate School of Engineering Tohoku University Sendai Miyagi Japan
3. College of Science and Engineering Ritsumeikan University Kusatsu‐shi Shiga Japan
4. Key Laboratory of Pressure Systems and Safety, Ministry of Education East China University of Science and Technology Shanghai China