塑料.拉伸性能的测定.第4部分：各向同性和正交异性纤维增强塑料复合材料的试验条件

[中文适用范围]： 本文件规定了测定各向同性和正交各向异性纤维增强塑料复合材料拉伸性能的测试条件，基于注释 1 中给出的一般原则。 单向增强材料由 ISO 527-5 涵盖。 该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。 该测试方法适用于以下材料： ——含有非单向增强材料的纤维增强热固性和热塑性复合材料，例如垫子、机织织物、机织粗纱、短切原丝、此类增强材料的组合、混合材料、粗纱、短纤维或磨碎纤维纤维或预浸渍材料（预浸料）；注 2：ISO 527-2 涵盖了注塑样品。 ——上述与单向增强材料和由单向层构成的多向增强材料的组合，前提是这种层压板是对称的；注 3：ISO 527-5 涵盖完全或主要单向增强的材料。 ——由上述材料制成的成品。 所覆盖的增强纤维包括玻璃纤维、碳纤维、芳纶纤维和其他类似纤维。 [外文原描述]： This document specifies the test conditions for the determination of the tensile properties of isotropic and orthotropic fibre-reinforced plastic composites, based upon the general principles given in ISO 527 - 1 . NOTE 1 Unidirectional reinforced materials are covered by ISO 527 - 5 . 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 defined conditions. The test method is suitable for use with the following materials: — fibre-reinforced thermosetting and thermoplastic composites incorporating non-unidirectional reinforcements such as mats, woven fabrics, woven rovings, chopped strands, combinations of such reinforcements, hybrids, rovings, short or milled fibres or preimpregnated materials (prepregs); NOTE 2 Injection moulded specimens are covered by ISO 527 - 2 . — combinations of the above with unidirectional reinforcements and multidirectional reinforced materials constructed from unidirectional layers, provided such laminates are symmetrical; NOTE 3 Materials with completely or mainly unidirectional reinforcements are covered by ISO 527 - 5 . — finished products made from materials mentioned above. The reinforcement fibres covered include glass fibres, carbon fibres, aramid fibres and other similar fibres.