Fan ZHANG. He received his B.S. degree in mechanical engineering from Chongqing University, Chongqing, China. He is currently pursuing his Ph.D. degree from Xi’an Jiaotong University, Xi’an, China. His research interests include dynamics of sub-nanometer interface and material wear of the head at sub-nanometer interface.

Yu WANG. He received his Ph.D. degree in systems engineering and engineering management from City University of Hong Kong, Hong Kong, China, in 2014. He is currently an associate professor at School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, China. His current research interests cover dynamics of sub-nanometer interface, reliability assessment, and fault prognostics.

Yueqiang HU. He received his Ph.D. degree in mechanical engineering from Tsinghua University, Beijing, China, in 2018. He joined College of Mechanical and Vehicle Engineering, Hunan University, Changsha, China, in 2018. His current position is an associate professor. His research areas cover the nanofabrication and surface/interface science.

Mingquan ZHANG. He received his Ph.D. degree from Xi’an Jiaotong University, Xi’an, China, in 2019. His current research interests include mechanical equipment condition monitoring, fault diagnosis, signal processing, dynamic modeling, digital twin, health management, and system reliability.

Baotong LI. He received his Ph.D. degree from Xi’an Jiaotong University, Xi’an, China. He is currently a professor at School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, China. He once won the National Science Fund for Outstanding Young Scholars, China. His research focuses on the large-scale intelligent computing, energy finite element, equal geometric design, and structural topology optimization.