碳纤维增强热塑性复合材料超声波焊接研究进展

Advances in Ultrasonic Welding of Carbon Fiber Reinforced Thermoplastic Composites

碳纤维增强热塑性复合材料(Carbon fiber reinforced thermoplastic composite,CFRTP)由于其优越的力学性能、较低的加工成本及可回收性,逐渐成为继铝合金、高强钢之后的新一代轻量化材料。国内外科研机构和材料企业都投入巨资和人力竞相开展相关研究,部分高校、企业已开始探索将CFRTP应用于机身与车身的制造与装配。超声波焊接是最适合焊接热塑性材料的方法之一,也是实现大规模装配CFRTP零部件的关键使能技术之一。从CFRTP超声波焊接基本过程、接头形式、数值模拟、质量监控和异种材料连接五个方面进行分析,系统讨论CFRTP超声波焊接最新研究成果,展望CFRTP超声波焊接中有待解决的共性问题,以期为CFRTP零部件的大规模装配应用提供参考。

Carbon fiber reinforced thermoplastic composites(CFRTP)have gradually become a new generation of lightweight material after aluminum alloys and high-strength steels due to their superior mechanical properties,low processing cost and recyclability.Domestic and foreign research institutions and materials suppliers have invested lots of money and manpower to conduct related research.Some universities and companies have begun to explore the application of CFRTP to the manufacture and assembly of airframes and vehicle bodies.Ultrasonic welding is one of the most suitable methods for joining thermoplastic materials,and it is also one of the key enabling technologies for the large-scale assembly of CFRTP components.It systematically describes the research progress in CFRTP ultrasonic welding from five aspects:basic process,joint type,numerical simulation,quality monitoring and dissimilar material joining.Future challenges for research on CFRTP ultrasonic welding are summarized,aiming to provide references for large-scale assembly applications of CFRTP components.