本国际标准规定了通过/ - 45°张力试验方法确定纤维增强塑料复合材料的平面内剪切应力剪切应变，剪切模量和剪切强度的程序。该方法适用于以下材料: - 由单向层和/或包括单向织物的织物制成的热固性和热塑性基质层压板，其中纤维与样品轴线成45°。叠层物应在对准中间平面上对称和平衡

This International Standard specifies a procedure for determining the in-plane shear stress-shear strain, shear modulus and shear strength of fibre-reinforced plastic composites by the +/- 45° tension test method. The method is suitable f for use with the following materials: - thermoset and thermoplastic matrix laminates made from unidirectional layers and/or fabrics including unidirectional fabrics, with the fibres oriented at +/- 45° to the specimen axis. the lay-up shall be symmetrical and balanced about the specimen mid-plane.