塑料拉伸性能的测定第5部分:单向纤维增强塑料复合材料的试验条件

[中文适用范围]： 本文件根据 ISO 527-1 中给出的一般原则，规定了测定单向纤维增强塑料复合材料拉伸性能的测试条件。 注：ISO 527-4 涵盖各向同性和正交各向异性增强材料。 这些方法用于研究测试样本的拉伸行为，并确定规定条件下的拉伸强度、拉伸模量、泊松比以及拉伸应力-应变关系的其他方面。 该测试方法适用于所有用单向纤维增强的聚合物基体系统，并且满足本文件中规定的要求，包括失效模式。 该方法适用于热塑性或热固性基体的复合材料，包括预浸渍材料（预浸料）。 所覆盖的增强材料包括碳纤维、玻璃纤维、芳纶纤维和其他类似纤维。 所覆盖的增强几何形状包括单向（即完全对齐）纤维和粗纱以及单向织物和带材。 该方法通常不适用于由多个不同角度的单向层组成的多向材料（参见 ISO 527-4）。 [外文原描述]： This document specifies the test conditions for the determination of the tensile properties of unidirectional fibre-reinforced plastic composites, based upon the general principles given in ISO 527-1. NOTE Isotropic and orthotropic reinforced materials are covered by ISO 527-4. The methods are used to investigate the tensile behaviour of the test specimens and for determining the tensile strength, tensile modulus, Poisson's ratios and other aspects of the tensile stress-strain relationship under the conditions defined. The test method is suitable for all polymer matrix systems reinforced with unidirectional fibres and which meet the requirements, including failure mode, set out in this document. The method is suitable for composites with either thermoplastic or thermosetting matrices, including preimpregnated materials (prepregs). The reinforcements covered include carbon fibres, glass fibres, aramid fibres and other similar fibres. The reinforcement geometries covered include unidirectional (i.e. completely aligned) fibres and rovings and unidirectional fabrics and tapes. The method is not normally suitable for multidirectional materials composed of several unidirectional layers at different angles (see ISO 527-4).