纤维金属层板的研究与发展趋势

纤维金属层板(Fiber metal laminates,FMLs)因其优良的疲劳性能以及高损伤容限,成为航空航天领域重要的结构材料,并愈加受到汽车、轨道交通等领域的关注。本文在综述FMLs发展概况的基础上,重点介绍了新型铝锂合金GLARE层板、热塑性Ti/Cf/PEEK层板及新一代聚酰亚胺FMLs层板的研究工作。同时针对FMLs的失效行为复杂、一些性能评价方法还不够完善等现状,评述了深入开展FMLs失效行为研究、采用计算机仿真技术进行其综合性能预测研究的重要性。最后,回顾了FMLs传统成形方法,如自成形技术和滚弯成形技术,并探讨了喷丸成形和液压成形在FMLs构件制造中的应用。

Review on Research and Development of Fiber Metal Laminates

Fiber metal laminates (FMLs) have been regarded as an important structural material in aerospace and are getting more attention from the fields of automobile, rail transportation and other industries, owing to their excellent fatigue and high damage tolerance. Based on the introduction of the development of FMLs, this paper focuses on the research status of novel GLARE with aluminum-lithium alloy, titanium sheets and carbon-fibre reinforced PEEK laminates (Ti/Cf/PEEK), and novel FMLs with carbon fibre reinforced polyimide(Ti/Cf/PMR). Subsequently, the importance of further recognizing their damage mechanism and performance prediction through computer simulation is reviewed, considering the complicated failure behaviors of FMLs and the lack of reasonable evaluation methods on some mechanical properties. Moreover, conventional forming technologies of FMLs, including the roll bending and the self-forming,are summarized. Finally, the shot peen forming and the hydro-forming to be used in the manufacture of complicated FML components are discussed.