主讲人：Lau, Kin Tak（刘建德）

单位：澳大利亚斯威本科技大学

时间：2018.10.16

地点：材料学院楼C321

主讲人简历：Professor Lau received his Bachelor and Master degrees of Engineering in Aerospace Engineering from the Royal Melbourne Institute of Technology (RMIT University, Australia) in 1996 and 1997, respectively. Within that period, he also worked for General Aviation Maintenance Pty Ltd, Australia, as an Engineer Trainee, and for the Corporative Research Centre for Advanced Composite Structures (CRC-ACS) Australia, as a Research Assistant designing a repair scheme for composite performs. Afterward, he received his Doctor of Philosophy (PhD) from The Hong Kong Polytechnic University in 2001. Thereafter, he was appointed Assistant Professor in 2002 and promoted to Associate Professor and Professor in 2005 and 2010, respectively. In 2015, he was appointed as Alex Wong/Gigi Wong Professor in Product Design Engineering and Associate Dean (Industrial Relation) in the Faculty of Engineering, PolyU. Currently, he is Pro Vice-Chancellor (Research Performance and Development) of Swinburne University of Technology, Australia to look after its future research and ranking strategies.  Professor Lau has received numerous research and teaching awards since 2002. In 2016, he was elected as Fellow of the European Academy of Science and Arts. To date only three academics in Australia have received this honour. His publications have received over 15,000 citations with h-index of 57. Since 2014, he has been elected as International Vice President of The Institution of Mechanical Engineers (IMechE) and appointed as Independent Non-executive Director of Kingsflair International (Holdings) Limited.

讲座介绍：

Polymer-based advanced composites always suffer from degradation at extreme temperatures in the range between 220 and 77 K and low atmospheric pressure. Within this temperature range, composite structures behave very brittle and many micro-cracks are easily formed due to differential thermal coefficients of expansion (CTEs) between polymer matrix and high strength reinforcements. Besides, at the Low Earth Orbit (LEO) environment the structures may also be subject to damages due to micro-meteoroid attack, in which many tiny particles left over from the formation of the solar system and they are travelling at very high speed (hyper-velocity) to cause serious impact and abrasion onto the structures. Out-gassing and high oxidation rate are also problems for polymers using at this environment. In this lecture, an overview on the nanocomposites, their mechanical, thermal and structural properties at different working environments is given. The following key items will also be introduced: (i) design of the heat shield’s geometry for re-entry vehicles; (ii) shock wave effect in relation to the heat transmission to the vehicles; (iii) advantage of using Phenolic Resin Carbon Ablator (PICA); (iv) types of nanoparticles for property enhancement for the vehicles and (v) possibility of using nano-particles to enhance the effectiveness of pyrolyzing process of PICA to prolong the heat transfer.