报告题目：Lightweight composite structures subjected to extreme loading conditions

报 告 人：官忠伟（英国利物浦大学Senior Lecturer，华南理工大学讲座教授）

报告时间：2015年12月17日星期四下午15:00

报告地点：7号楼7201学术报告厅

欢迎广大师生参加！

土木与交通学院

2015年12月14日

报告摘要：

With more uncertainties in the modern world due to possible terrorist threats or natural disasters, the impact and blast response and resistance of composite structures become increasingly important issues to engineering communities and government bodies. In this talk, two types of lightweight composite structures will be covered, i.e. (1) fibre metal laminates (FMLs) and (2) PVC foam based sandwich structures. Also, other types of lightweight composites will be introduced at the end.

FMLs are multi-layered materials consisting of interleaved arrangements of metal and fibre-reinforced composites. They have a good blast/impact resistance. But their performance will differ, depending on the precise materials used, the ways in which they are interleaved, and the thickness of the various materials, orientation of the fibre, resin used, etc. FMLs are currently used in aerospace industry. Next generation of super-jumbo and super-sonic aircraft will require FMLs to have resistance to high temperature, fatigue and impact.

Novel lightweight PVC foam based sandwich structures are made from thin-skins and core with embedded composite tubes. The skin materials are usually made from high strength alloys, glass or carbon fibre reinforced composites, whilst the core is made from PVC foam with embedded composite or metal tubes. Such sandwich structures maximise compression resistance offered by material as well as restraints to composite tubes from the foam. Throughout optimised design on blast and impact resistance, this type of sandwich structures can be produced with the optimised energy absorption to weight ratio. The main advantages of such sandwich structures are: extremely light, superior energy absorption, low cost, high mobile ability, as well as variable combinations between the core and skins.

报告人简介：

     官忠伟博士现任英国利物浦大学工程学院Senior Lecturer，兼任该校院研究生委员会主任。2015年9月起受聘为华南理工大学讲座教授。官博士研究方向包括复合材料、夹层结构、有限元、应用力学、冲击爆炸、结构分析。其学术任职包括英国注册结构工程师学会会员(MIStructE)，材料/矿物和矿产学会会员(MIMMM)，英国复合材料学会会员(MBCS)以及英国复合材料学会下属国际合作委员会负责人，欧盟COST Programme (EP1101 WG1)管理委员会成员，国际在线工程杂志和土木工程编委，第五届国际计算力学大会主席 (2014年，英国剑桥)，15个国际一流杂志的审稿人，英国自然科学基金(EPSRC)、法国国家研究基金(ANR)、南非国家研究基金研究提案审稿人等。