Huajie Wu graduated in Mechanical Engineering from Yangzhou University, China. He holds a master's degree from Yangzhou University, China, attained in 2013. Currently, he is pursuing his PhD at the School of Mechanical Engineering, Hangzhou Dianzi University, China. His areas of research include tribology and maintenance management, fatigue of engineering materials, finite element analysis, elastoplastic fluid lubrication and mechanical nonlinear vibration.