本文评价了测量纤维复合材料剪切性能的六种试验方法,材料由65％体积含量的聚芳香酸胺纤维增强环氧所组成。由每一种方法得到的剪切数据与用作标准的90°缠绕薄壁圆管扭转试验作比较,根据比较,目前推荐±45°偏轴层合板拉伸剪切试验可用来测定复合材料的剪切性能。这种方法简单、廉价而可靠,其剪切应力-应变特征曲线最接近90°缠绕薄壁圆管扭转试验的曲线。 无论什么时候,复合材料的界面粘接或基体破坏都是关键性影响,就像复合材料结构承受压缩荷载一样,所以掌握剪切性能的知识是 This paper evaluates six test methods for measuring the shear properties of fiber composites consisting of 65% by volume polyaramide fiber reinforced epoxy. The shearing data obtained by each method are compared with the 90 ° torsional thin-walled tube torsion test used as a standard. According to the comparison, tensile shear test of ± 45 ° off-axis laminated plates is currently recommended to measure the shear of the composite performance. This method is simple, inexpensive and reliable, and its shear stress-strain curve is closest to the curve of a 90 ° spiral wound tube. At any time, the interface bonding or matrix destruction of the composite material is the key impact, just as the composite structure is subjected to the compressive load, so knowledge of the shear properties