报告人： Professor Min Zhou
时 间： 2019年5月31日（周五）14点
地 点： 工学院1号楼210室
内容简介：
A grand challenge in materials science and engineering is the establishment of direct relations between macroscopic properties and lower-scale structures of materials. Most material properties are measured experimentally and theoretical calculation or prediction is difficult. Fracture toughness is one of the most important properties of engineering materials. In the last several years, we have developed microstructure-level computational techniques capable of predicting the fracture toughness of brittle and ductile materials. The framework does not involve curve fitting and accounts for the effects of microstructural heterogeneity, phase morphology, constituent behavior, and interfacial properties between the constituents in the microstructure. The approach, based on the cohesive finite element method (CFEM), uses the J-integral and allows explicit resolution of realistic microstructures and fundamental fracture mechanisms. To account for uncertainties, statistically equivalent microstructure sample sets (SEMSS) are generated and used. In this talk, I will discuss the prediction of KIC and JIC of ceramic composites and polycrystalline metals as functions of microstructure attributes. The effects of composition, grain size, phase morphology, interface, grain boundary, and competition between different fracture mechanisms are quantified through analytical models.
报告人简介：
Min Zhou is the George W. Woodruff Professor of Mechanical Engineering and Materials Science and Engineering at Georgia Tech. He received his Ph.D. from Brown University in 1993 and was a postdoctoral fellow at Caltech between 1993 and 1995. He joined the faculty at Georgia Tech in 1995. His research focuses on material behavior at several length scales, emphasizing computational modeling and experiments. Areas of interest in recent years concern ceramics, metals, electrode materials, energetic materials, and composite. Dr. Zhou is a recipient of the US National Science Foundation (NSF) CAREER award and Sigma Xi Society Georgia Chapter Best Paper Award. He is a Fellow of the American Society for Mechanical Engineers (ASME). He has given over 200 invited talks, invited seminars, invited keynote/plenary talks, or distinguished lectures in the US, Europe and Asia.
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