Wei Zhang received the specialized M.S. degrees in mechanics from Xi’an Jiaotong University in 1995, and the Ph.D. degrees in ordnance science and technology from Xi’an High-tech institute, Shaanxi, China, in 2003. He is currently a Professor of aeronautical science and technology in Xi’an High-tech institute, Shaanxi, China. His research interests include non-destructive testing technology, condition monitoring, fault diagnosis and signal processing. He is one of the fifth executive directors of the fault diagnosis professional committee in the Chinese Society of Vibration Engineering. The funding of the projects he has involved or been responsible for has exceeded $ 1000,000. He has published 3 books and about 150 papers. Many papers have been indexed by SCI and EI. Gan Tian received the B.S. degrees in mechanics from Xi’an High-tech institute, Shaanxi, China, in 2003, and the specialized M.S. degrees in aeronautical and astronautical science and technology from Xi’an High-tech institute, Shaanxi, China, in 2009. He is currently a Lecturer of aeronautical science and technology in Xi’an High-tech institute, Shaanxi, China. His research interests include non-destructive testing technology and fault diagnosis. Zhigao Xu received the B.S. degrees in mechanics from Xi’an High-tech institute, Shaanxi, China, in 1999, the specialized M.S. degrees in aeronautical and astronautical science and technology from Xi’an High-tech institute, Shaanxi, China, in 2003 and the Ph.D. degrees in ordnance science and technology from Xi’an High-tech institute, Shaanxi, China, in 2009. He is currently an Associate Professor of aeronautical science and technology in Xi’an High-tech institute, Shaanxi, China. His research interests include fault diagnosis and signal processing. Zhengwei Yang received the B.S. degrees in mechanics from Xi’an High-tech institute, Shaanxi, China, in 2005, and the Ph.D. degrees in ordnance science and technology from Xi’an High-tech institute, Shaanxi, China, in 2011. He is currently a Lecturer of aeronautical science and technology in Xi’an High-tech institute, Shaanxi, China. His research interests include non-destructive testing technology, condition monitoring, and signal processing.