Prof. Dr. Xiaoquan Cheng is a professor at the School of Aeronautical Science and Engineering, Beihang University, and the chief researcher at the Lab of FanZhou Advanced Material and Structures, Beihang University. He spent 5 years on the analysis and design of main rotor blades and tail blades of helicopters at the Chinese Helicopter Research and Development Institute and 2 years on mechanical property characterization of composite materials in the National Key Laboratory of Advanced Composites, Beijing Institute of Aeronautical Material (BIAM). He has served as a council member of the Chinese Society for Composite Materials and Deputy Secretary-General of the Chinese Society for Composite Materials. He is currently is a committee member on aviation materials of China Standards Committee for Materials and Testing (CSTM) and a member of the Physical Metallurgy Personnel Qualification Committee of Aviation Industry Corp of China and China Aero Engine Group Corporation. He is also a member of the Specialized Committee on Nonmetal Failure Analysis of China Aviation Society and a member of the High Tech Fiber and Application editorial board. His main research interests include design technology of composite structures, damage tolerance and damage resistance design of composite structures, composite structure repair and experimental mechanics of composite structures. He has published over 230 papers, 11 books and 14 patents.