Lecturer:Prof.Qian Xudong, doctoral mentor
Lecture Time:Jan. 3, 2019 (Thursday), 10:00-12:00 a.m.
Lecture Location:Mingzhi Building B504
About the Lecturer:Qian Xudong works at Department of Civil and Environmental Engineering, National University of Singapore (NUS). His research focuses on fracture mechanics, evaluation of fracture and fatigue of large structures, weld metal for offshore structures, steel-concrete composite structures, and polymer materials for deep water applications. He has published more than 80 SCI-indexed papers and more than 60 conference papers onEngineering Fracture Mechanics, Engineering Structures, Marine Structures, and Journal of Constructional Steel Research,etc. He has been invited as a guest speaker in 3 conferences. He is appointed as director of NUS-JTC i3 Centre and director of Centre for Advanced Materials and Structures (CAMS). He is member of ASTM, ASME and ASCE, member of Working Groups of the Singapore Standards Council, and has been member of the ICSOS committee.
Prof. Qian has been conferred the first-class honored degree in 2000 and doctoral degree in 2005 in NUS, both in Civil Engineering. After working as an engineer in Keppal Corporation for 8 months, he became a postdoctoral researcher in UIUC and then joined NUS in 2007.
About the Lecture:The intrinsic statistical characteristics of cleavage fracture have been widely acknowledged during the past decades in various brittle materials, e.g., ferritic steels, ceramics, glasses, and solid chemical catalysts. The observed large scatter in the experimentally measured fracture toughness, in e.g., ferritic steels, drives the development of statistical-based treatment of cleavage failure, represented primarily by two broad categories of approaches, namely the global approach and the local approach. Both approaches have experienced significant advancement over the years and have become commonly adopted in the structural integrity assessments for different applications. This study addresses the following challenges faced in the engineering assessment of cleavage fracture: a) the calibration of the key parameters in the statistical assessment of cleavage failure; b) near-tip fracture driving force incorporating a strain gradient plasticity; c) assessment of cleavage failure in curved surface crack specimens; and d) assessment of cleavage fracture in mixed-mode fracture. This presentation also extends the cleavage assessment to large-scale pressure vessel structures under thermal-mechanical loading conditions.
All students and staff are welcome!
Host Organizations:
School of Mechanical Engineering
MOE Key Laboratory of Petroleum and Natural Gas Equipment
School of Civil Engineering and Architecture
Science and Technology Department
Xindu district of chengdu in sichuan province xindu road no. 8 | 
610500 | 
86-28-83032846 
