1. Department of Engineering Mechanics, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
2. Department of Mechanical Engineering, Brigham Young University, 350 Engineering Building, Provo, UT 84602
3. Material, Physical, and Chemical Sciences, Sandia National Laboratories, Albuquerque, NM 87185
4. Department of Materials Science and Engineering, Ohio State University, 2041 College Road, Columbus, OH 43210