泡沫夹层结构在飞机次承力结构中的应用  

Application of Foam Sandwich Structure in Aircraft Secondary Load-Carrying Structure

作　　者：贾欲明[1] 韩全民[1] 李巧[1] 陈顺强[1] 

机构地区：[1]第一飞机设计研究院

出　　处：《航空制造技术》2009年第S1期8-12,共5页Aeronautical Manufacturing Technology

摘　　要：讨论了使用高强度闭孔刚性聚甲基丙酰亚胺泡沫(PMI)作为夹层结构夹芯材料的优、缺点,并与NOMEX蜂窝从力学性能、冲击后压缩强度、鸟撞、吸湿性能以及制造工艺性和无损检测等方面进行了比较。认为高强泡沫材料比强度基本能够达到NOMEX蜂窝水平,且在制造工艺性、耐吸湿性等方面优点突出。同时介绍了泡沫在某些飞机次承力结构总的应用以及在结构设计中泡沫材料的一些注意事项。The advantages and disadvantages of high-strength and closed-hole rigid polymethacrylimide(PMI)foam as the core material of sandwich structure are discussed.PMI foam and NOMEX honeycomb is compared from the aspects of mechanical properties,compression after impact,bird strike,moisture absorption,manufacturing process and non-destructive testing.The results show that the specific strength of high-strength PMI foam is similar with that of NOMEX honeycomb,and the manufacturing process and resistance to moisture are better.The application in aircraft secondary load-carrying structure and the some attentions of PMI foam in the structure design are introduced.

关 键 词：泡沫 蜂窝 次承力结构 

分 类 号：V214[航空宇航科学与技术—航空宇航推进理论与工程]