1. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
2. MIIT Key Laboratory of Aerospace Information Materials and Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China
3. Center of Experimental Physics, High Energy Physics Chinese Academy of Sciences, Beijing 100049, China
4. Research Center of Structural Health Monitoring and Prognosis, State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
5. School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, United States
6. Department of Materials Science & Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K.