【摘要】 本文基于2-2带衬经结构的层-层正交角联锁织物结构优势,制备了相应的复合材料,进行了拉伸性能和剪切性能试验,分析了2.5维机织复合材料经纬向的力学性能。研究发现,在经向增强2/2角联锁织物增强复合材料拉伸试验中,试件纬向的最大拉伸强度较经向大,且经纬向拉伸断口都较为规整;在经向增强2/2角联锁织物复合材料短梁弯层间剪切强度测试中,纬向达到最大破坏载荷时,试件的破坏程度较经向大,部分纤维从层间被剥离出来,而经向没有明显的破坏痕迹,且纬向最大层间剪切强度大于经向。更多还原

【Abstract】 In this paper, based on the structural advantages of 2-2 layer by layer orthogonal angle interlock fabric with lining warp structure, the corresponding composite materials were prepared, the tensile and shear properties were tested, and the mechanical properties of 2.5 D woven composite materials in warp and weft direction were analyzed. It was found that the maximum tensile strength of the specimen in the longitudinal direction is larger than that in the longitudinal direction, and the longitudinal and latitudinal tensile fractures are more regular in the tensile test of the warp reinforced 2/2-angle interlock fabric reinforced composite; in the interlaminar shear strength test of the short beam of the warp reinforced 2/2-angle interlock fabric composite, when the longitudinal direction reaches the maximum failure load, the damage degree of the specimen is larger than that in the longitudinal direction, and some fibers are from the layer. The maximum interlaminar shear strength in the latitudinal direction is greater than that in the meridional direction.更多还原