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报告题目：Impact mechanics && advanced manufacturing 

报告人：Dr. Cang Zhao，Argonne National Laboratory

时间：2018年4月17日上午10:00

地点：北京理工大学3号教学楼146会议室

个人简介：

Dr. Cang Zhao received his Bachelor degree in Materials Science and Engineering from the University of Science and Technology Beijing in 2009, his Master degree in Condensed Matter Physics from the University of Science and Technology of China in 2011, and his PhD degree in Structural Engineering from the University of California, San Diego in 2015. At present, he is a postdoc researcher in Argonne National Laboratory. Dr. Zhao’s research is focused on the microstructural evolution in metal additive manufacturing, scalable micro/nano-manufacturing, multiscale mechanics of solid and liquid foams, advanced protection and damping materials and structures, etc. Through his academic studies so far, he has achieved the honors of President Award of the Chinese Academy of Sciences and Outstanding Graduate of Beijing City, and published a few journal papers in Physical review letters, Nanoscale, Acta Materialia, Materials Science and Engineering: A, Scientific Reports, etc.

报告摘要：

In this talk, Dr. Cang Zhao will summarize his research in the fields of advanced manufacturing and impact mechanics. First, he will talk about dynamic behavior of nanocellular materials. The two most critical structural parameters of a cellular material are its porosity and pore size. According to the classical theory, the mechanical properties of cellular materials are only related to the porosity. So, the question is, where is the pore size or what is its role. Through systematic experimental investigations, Dr. Zhao will lead you to the answer. Next, he will present some results in x-ray vision of metal additive manufacturing. In this field, the community are mainly facing two problems: one is how to eliminate defects (e.g. porosity) and residual stress, and the other is how to control the grain and phase structures. Dr. Zhao will show the power of the high-speed x-ray imaging and diffraction techniques in shooting these two problems.