摘要
针对夹芯结构经常出现的三种损伤方式:单面板损伤、单面板和蜂窝损伤以及穿透性损伤,利用真空袋压工艺,采用高强玻璃布补片和Nomex蜂窝芯作为修补材料,通过复合材料胶接与挖补修复工艺对损伤结构进行修复,主要探讨了修复前后不同损伤孔径对其弯曲性能的影响。结果表明,三种损伤方式对蜂窝夹芯结构的最大载荷和弯曲刚度都有很大影响;三种损伤方式的夹芯结构的最大载荷和弯曲刚度都随着损伤孔径的增大而降低;用复合材料胶接与挖补工艺对三种损伤方式的夹芯结构进行修复,能大大提高受损结构的弯曲性能;修复后的最大弯曲载荷达到完好夹芯结构的80%以上,修复后的弯曲刚度达到完好夹芯结构的85%以上。
Composite honeycomb sandwich structures with single-panel damage,single-panel,honeycomb sandwich damage and penetrating damage were bonded with high-strength glass cloth patches and Nomex honeycomb cores by the vacuum-bagging process.Effects of damage diameters on flexural mechanical properties of the honeycomb sandwich structure before and after bonded repair were investigated.Results show that the maximum load and the bending stiffness of the repaired honeycomb structure were depended with the damage modes,and with increasing of the damage diameters,the maximum flexural load and stiffness of the damaged honeycomb structure decreases.The flexural mechanical properties of the damaged honeycomb structure bonded with composite patches and honeycomb core increased significantly,the maximum flexural load and stiffness of the repaired sandwich structures can be more than 80% and 85% of the intact structures,respectively.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2012年第4期100-105,共6页
Fiber Reinforced Plastics/Composites
关键词
复合材料
蜂窝夹芯结构
结构损伤
胶接修补
弯曲性能
composite
honeycomb sandwich structure
structural damage bonded repair
flexural properties
