摘要
通过单向静力拉伸试验研究了三维全五向编织复合材料耳片接头的力学性能。试件选用T700-12K碳纤维采用四步法编织预制件,以TDE-85环氧树脂为基体,经树脂传递模塑(RTM)工艺固化成型。对两种几何尺寸、两种孔加工方式(编织预留孔和机械制孔)的三维全五向编织复合材料耳片接头试件的力学性能进行了试验研究。试验结果表明,同尺寸三维全五向编织预留孔接头的承载力是机械制孔接头承载力的6倍;对相同孔径及厚度的耳片,增大耳片宽度能大幅提升耳片承载力,但并不能显著提高其初始破坏载荷。
The mechanical properties of the 3D full 5-directional braided composites lugs on axial tension are studied basedon experiments. The 3D braided composites lugs used for the study are made of T700-12K carbon fiber braided by 4-stepbraiding technique and solidified with TDE-85 epoxy by resin transfer molding （RTM） technique. The mechanical propertiesof the experimental samples which consist of two geometries and two methods for the holes （drilled and braided separately）are investigated. The results of these experiments show that the strength of the braided hole lug is six times that of the drilledone lug for the same size and same braiding technique. For the same hole diameter and thickness lug, with the increase ofthe width of the lug, the final failure load increases significantly, but the initial failure load improves a little.
出处
《航空学报》
EI
CAS
CSCD
北大核心
2016年第7期2225-2233,共9页
Acta Aeronautica et Astronautica Sinica
基金
省部级项目~~
