Affiliation: 
Professor, School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, China

Title: 
Discussion on Uncertainty in Reliability of Aero-Engine Components

Abstract: 
Aero engines are powering the aerospace equipment and significantly influence the overall performance of aircraft. They operate in harsh environments, where components are subject to high pressure, high speed, high temperature, and prolonged cyclical loading. The reliability investigations in terms of aero engine components such as turbine shafts, turbine discs, turbine blades, bearings, and transmission gears, challenges arise due to small samples and the limited amount of test data. Furthermore, various internal and external uncertainties throughout their life cycle pose challenges for ensuring the high reliability and longevity of aero engines. This work begins by analyzing the sources of uncertainty in key aero engine components and introduces methods for quantifying stochastic and epistemic uncertainties. Then, followed by proposing reliability analysis and structural optimization methods considering model and parameter uncertainties, probabilistic methods of fatigue analysis under small samples and multi-source uncertainties, and fatigue life prediction methods. Ultimately, offering perspectives on uncertainty investigations in the reliability of aero engine components.

Personal Profile:

Hong-Zhong Huang received the B.S. degree from Wuhan University, Wuhan, China, in 1983, the M.S. degree from Chongqing University, Chongqing, China, in 1988, and the Ph.D. degree from Shanghai Jiao Tong University, Shanghai, China, in 1999, all in mechanical engineering. He is a Full Professor of Mechanical Engineering with the School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu, China. He is also the Director with the Center for System Reliability and Safety, University of Electronic Science and Technology of China. He has held visiting appointments at several universities in the USA, Canada, and Asia. He has authored or coauthored more than 350 journal papers and eight books in the fields of reliability engineering, optimization design. Prof. Huang is also an ISEAM Fellow, a Technical Committee Member of ESRA, a Co-Editor-in-Chief for the International Journal of Reliability and Applications, and an Editorial Board Member of several international journals.