News & Events
Invited talk: Life Prediction on the Base of Material Fundamental Properties
Title：Life Prediction on the Base of Material Fundamental Properties
| | 报告人 (Speaker): Dr. Xijia WU National Research Council Canada 时 间(Time)： 10:30, 2012.12.25 地 点(Venue): 土木大楼B504 主持人(Chair): 钱 江 教授 |
内容提要（Outline）：
The advance of gas turbine engines with the increased propulsive efficiency over the past 50 years are in a great extent owing to the development of high temperature materials. As we look to the future, it is clear that the top-level challenges for materials are increasing, driven by ever more stringent requirements from the design community; less tolerance for long, drawn-out development programs; and need for concomitant advances in materials processes and in the supporting industrial base, which requires a new systems engineering approach that emphasizes creativity, reduced development cycle time, and concurrency of manufacturing development that is necessary to successfully meet new challenges. In this paradigm, materials modeling and life prediction is an effective vehicle to convey the material behavior to design requirements. This lecture explains the intricacy of material deformation and damage mechanisms under high-temperature loading conditions, which result in creep and thermo-mechanical fatigue failure of materials. Through a physics-based modeling scheme, material fundamental property parameters and micro-structural features are identified that affects the strength and durability of materials in gas turbine engine applications. Life prediction prescribes the life cycle management strategy.
报告人（About the Speaker）:
Dr. Xijia Wu is a Research Fellow at the National Research Council Canada. He received his Bachelor in Applied Mechanics at the University of Science and Technology of China, MS in Applied Mechanics at the Institute of Mechanics, Chinese Academy of Sciences, and PhD in Mechanical Engineering, University of Ottawa. From 1993, he has been working in the Structures and Materials Performance Laboratory, Institute for Aerospace Research, National Research Council Canada, for seventeen years on modeling and life prediction for aerospace materials with more than 100 publications in referred journals and conference proceedings.