Corresponding author.Hongbing Sun was born in 1970. He is an asso- ciate professor and master tutor of Huaiyin Norreal University. Now he is a Ph.D. student of Nanjing University of Aeronautics and Astro- nautics. His main research interests are structural health monitoringsignal and information processing, artificial intelligence. Shenfang Yuan was born in 1968. She received Ph.D. degree of engineering from Nanjing University of Aeronautics and Astronautics. Now she is tutor of a Ph.D. student of Nanjing Univer- sity of Aeronautics and Astronautics. Her main research interests are structural health monitoringsignal and information processing, artificial intelligence. E-mail:ysf@ nuaa.edu.cn Xia Zhao was born in 1978. She is now a Ph.D. student of Nanjing University of Aeronautics and Astronautics. Her main research interests are structural health monitoringsignal and information processing, artificial intelligence. Hengbao Zhou was born in 1986. He is now a master of Nanjing University of Aeronautics and Astronautics. His main research interests are in areas of structural health monitoringcomputer measurement and control. Dong Liang was born in 1982. He is now a Ph.D. student of Nanjing University of Aeronautics and Astronautics. His main research interests are structural health monitoringsignal and information processing, etc.