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试验条件。 注？ISO 527-4涵盖了各向同性和正交异性增强材料。 这些方法用于研究试样的拉伸行为，并在规定的条件下确定拉伸强度、拉伸模量、泊松比和拉伸应力-应变关系的其他方面。 本试验方法适用于所有用单向纤维加固的聚合物基体系统，且满足本文件中规定的要求，包括失效模式。 该方法适用于具有热塑性或热固性基体的复合材料，包括预浸渍材料（预浸料）。 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。所涵盖的钢筋几何结构包括单向（即完全对齐）纤维和粗纱以及单向织物和胶带。 该方法通常不适用于由几个不同角度的单向层组成的多向材料（见ISO 527-4）。

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).