This book investigates two types of static multi-fidelity surrogates modeling approaches, sequential multi-fidelity surrogates modeling approaches, the multi-fidelity surrogates-assisted efficient global optimization, reliability analysis, robust design optimization, and evolutionary optimization. Multi-fidelity surrogates have attracted a significant amount of attention in simulation-based design and optimization in recent years. Some real-life engineering design problems, such as prediction of angular distortion in the laser welding, optimization design of micro-aerial vehicle fuselage, and optimization design of metamaterial vibration isolator, are also provided to illustrate the ability and merits of multi-fidelity surrogates in support of engineering design. Specifically, lots of illustrative examples are adopted throughout the book to help explain the approaches in a more "hands-on" manner. This book is a useful reference for postgraduates and researchers of mechanical engineering, as well as engineers of enterprises in related fields.

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Dr. Qi Zhou is an associate professor at the School of Aerospace Engineering, Huazhong University of Science and Technology (HUST), Wuhan, China. Dr. Zhou was a visiting scholar of Imperial College London and a joint Ph.D. of Georgia Tech. He was awarded the first batch of national defense innovation "leading funds". Also, he was selected for the China Science and Technology Association's "Young Talent Trusted Project", the major talent plan of the department of education, Hubei Province, the plan of "Excellent Young Teacher Training", "Huazhong Excellent Scholars", and the "Academic Newcomer Award" of Huazhong University of Science and Technology. His research expertise areas include the intelligent design of equipment, multi-fidelity surrogate model, and design optimization under uncertainty. He was the session chair of the International Conference on System Modeling and Optimization and the 9th International Conference on Control, Mechatronics, and Automation.He also served as the special editor for the international journal "Sensors" and "Applied sciences". He is a senior member of the American Institute of Aeronautics and Astronautics (AIAA) and the Chinese Society of Mechanical Engineering (CMES). He has published over 100 peer-reviewed international journal and conference papers.

Min Zhao is the chief engineer of the China Academy of Launch Vehicle Technology (CALT), Beijing. He began his career at the CALT as an engineer for overall rocket design. He has successively worked as an engineer, a senior engineer, a research fellow, a department leader, and a chief engineer since 1987. He also completed his Ph.D. in 2005. He has been engaged in the overall design of aerospace craft for the past 30 years, gathering unique insights into aircraft performance. Due to his outstanding achievements, he has been selected for the National Prize for Progress in Science and Technology (Top Grade) twice and the Aerospace Merit Award once. Thanks to the support of Tsinghua University, the China Academy of Aerospace Aerodynamics, the Institute of Mechanics (CAS), and the CALT, he has conducted extensive research on engineering application technologies.

Dr. Jiexiang Hu is an assistant professor at the School of Aerospace Engineering, Huazhong University of Science and Technology (HUST), Wuhan, China. His research interests include multi-fidelity surrogate models, model calibration and validation, and surrogate model-based aircraft structural design and optimization. He has published over 30 peer-reviewed international journal and conference papers.

Mengying Ma is a senior engineer of the China Academy of Launch Vehicle Technology (CALT). She has been engaged in the overall design of the launch vehicle since 2011. Her research interests include multidisciplinary design optimization of vehicles and integrated design of vehicles. She has published over 10 peer-reviewed international journal and conference papers and authorized over 10 patents.