薄层碳纤维斜纹布层压板二次胶接试验研究  

Experimental study on secondary bonding of thin carbon fibre twill laminates

作　　者：江帆 单杭英[1] 潘荣华[1] 杨忠清[1] JIANG Fan;SHAN Hangying;PAN Ronghua;YANG Zhongqing(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学航空学院,南京210016

出　　处：《航空工程进展》2023年第5期101-108,共8页Advances in Aeronautical Science and Engineering

基　　金：中央高校基本科研业务费(3082020NP2020415)。

摘　　要：将复合材料薄板二次胶接技术应用在小型无人机机翼主承力结构上,对于降低机翼盒段的制造成本具有重要的工程应用价值。采用碳纤维斜纹布制2 mm薄板进行单搭接结构拉剪试验,分析3种不同型号的胶粘剂对该薄板的适配性以及胶层厚度和层压板铺层角度对二次胶接强度的影响,并通过ABAQUS软件进行模拟验证。结果表明:使用SY-23B环氧结构胶,胶层厚度为0.2 mm、铺层方式为[(0/90)]_(8)-[(0/90)]_(8)的结构件,胶接性能最优,结构剪切强度可以达到18.2 MPa,满足小型无人机受力盒段的胶接强度要求,二次胶接成型的机翼受力盒段具有轻质化、低成本的优点。The application of thin composite material laminate secondary bonding technology to the main loadbearing structure of small UAV wings has important engineering applications for reducing the manufacturing costs of wing box section.A single-lap structural tensile shear test is carried out using a 2 mm sheet made of carbon fibre twill.The suitability of three different types of adhesive for the sheet is analyzed,as well as the effect of adhesive thickness and laminate lay-up angle on the strength of the secondary glue joint,and the simulation is verified by ABAQUS software.The results show that,using SY-23B epoxy structural adhesive,the adhesive layer thickness is 0.2 mm,the lay-up method is[(0/90)]_(8)-[(0/90)]_(8),the bonding performance is optimal,the structural shear strength can reach 18.2 MPa,which can meet the small UAV stress box section bonding strength requirements,the secondary bonding formed wing stress box section has the advantages of light weight,low cost.

关 键 词：复合材料 薄板二次胶接 机翼盒段 单搭接结构 剪切强度 

分 类 号：V215[航空宇航科学与技术—航空宇航推进理论与工程] TB33[一般工业技术—材料科学与工程]