Xiaoyan ZHU, Chair Professor
School of Economics and Management
University of Chinese Academy of Sciences, Beijing
"Two-Stage Stochastic Programming Approach for Combined Redundancy Allocation and Preventive Maintenance Planning Under Uncertain Future Usages"
We consider an integrated optimization of system reliability design and preventive maintenance when the system is subject to uncertain future usage. A two-stage stochastic programming with recourse is used to address the uncertainty and determine the number of redundant components and preventive maintenance policy with the objective of minimizing the expected construction and maintenance cost per unit time in long term. We demonstrate different models under various situations, including risk-neural and risk-averse cases, periodic and aperiodic maintenance, and minimal, perfect and imperfect repairs. Numerical experiments show the effectiveness and benefits of this modeling and optimization approach under various situations.
Xiaoyan Zhu is Chair Professor in School of Economics and Management at University of Chinese Academy of Sciences, Beijing. She received a B.S. degree from Tsinghua University, Beijing, in 2000, and Ph.D. degrees from Texas A&M University, in 2005. She also received a MSc in the joint program of Nanyang Technological University and MIT in 2011. Her research interests are in importance measures, system reliability and maintenance optimization, operations research, and supply chain and inventory management. She served as Associate Editor of IEEE Transactions on Reliability and is an Area Editor of IISE Transactions. She is an author of Importance Measures in Reliability, Risk, and Optimization: Principles and Applications published by Wiley in 2012.