汇报时间：2023年9月7日(星期四) 上午9: 00

汇报地点：曲江校区南一楼A座3楼会议室

汇报人：康友伟

国际会议信息

会议名称： The 23rd International Conference on Composite Materials (ICCM23)

会议时间： July 30-August 4, 2023

会议地点： ICC, Belfast, Northern Ireland, UK.

会议简介：The 23rd International Conference on Composites Materials (ICCM 23) will be held in Belfast, Northern Ireland, from July 30th to August 4th 2023. ICCM is the premier international conference in the field of composite materials and was first held in 1975 in the cities of Geneva and Boston. Since that time the conference has been held biennially in North American, European, Asian, Oceanic, and African cities. ICCM 23 will attract the leading researchers and practitioners, to report and exchange ideas on the latest developments in the advancement and exploitation of a wide range of composites materials and structures. The general themes of material development, testing, modelling, manufacturing and design will encompass a breadth of topics which will provide a comprehensive global snap-shot of the state-of-the-art. Plenary and keynote lectures from pre-eminent leaders in the field are planned, along with oral and poster presentations from an expected large delegation coming together in Belfast from all corners of the world. A number of site visits and an entertaining social programme are also planned.

参会论文信息

Title: Integrated functional and structural mesh surface design and floating 3D printing using continuous fiber

Author: Youwei Kang, Tengfei Liu, Lingling Wu, Xiaoyong Tian

Abstract: Continuous carbon fiber composites have been extensively used in current aerospace and become an essential optional material for antenna reflector due to their combined excellent mechanical properties and good electrical conductivity. To meet the requirements of space exploration and the large-scale development of antennas, this study designed the structure of the mesh reflector in a function-oriented manner and fabricated it using a novel floating 3D printing technique with continuous carbon fiber reinforced polyamide (PA) composites. In this research, the 3D scanning, SEM, CT scan and other methods were utilized to systematically characterize and analyze the influence of process parameters including floating distance, printing speed, printing temperature and layer count on the forming quality of the reflector from a multi-scale perspective. The results showed that the floating distance should be taken as small as possible, the printing speed is 300~500 mm/min, the printing temperature is 255~265℃, and the layer count is at least 3 to achieve high surface quality. The electromagnetic reflectivity of the mesh reflector at S band with the frequency of 2.9~3.6 GHz was conducted in a free-space test system, and the influence law of structural parameters such as mesh size and shape on the function was also studied. The measured reflectivity can exceed 95% to meet the application requirements. A set of process-structure-function integrated design and manufacturing strategy based on floating 3D printing technique can help the development of reflector antenna.

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