1.1 本试验规程规定了聚合物基复合材料锥形或阶梯接头抗拉强度的测定程序。它适用于具有单向帘布层或编织织物增强层的二次粘合或共粘合层压板。待结合的材料可以是不同的材料系统。在粘合线中，可以使用也可以不使用单独的粘合材料（例如:粘合剂可以与预浸料系统一起使用，也可以不与湿铺层修复系统一起使用）。可接受的测试层压板和厚度的范围在 8.2.1 。 1.2 本规程是对试验方法的补充 D3039/D3039米 用于拉伸载荷。本规程未规定几个重要的试样参数（例如，接头长度、帘布层重叠、台阶深度和锥度比），但需要指定并报告这些参数，以支持可重复的结果。 1.3 可以测试单向（0°铺层方向）胶带复合材料、纺织复合材料以及多向复合材料层压板。 1.4 单位- 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的；因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得合并。 1.4.1 在文本中，英寸磅单位显示在括号中。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 本测试实践旨在为材料规范、研发、质量保证以及结构设计和分析提供拉伸性能数据。影响拉伸响应并因此应报告的因素包括:材料（层压板和粘合剂）、材料制备方法，包括粘合前的表面制备、叠层、试样堆叠顺序、接头锥度比或步长、层压板重叠长度、材料相对厚度以及母层压板和修补层压板的刚度，粘合刚度、试样制备、试样处理、试验环境、试样对齐和夹紧、试验速度、在温度下的时间、空隙率和体积百分比钢筋。可从本试验实践中获得的试验方向上的特性包括以下内容: 5.1.1 极限抗拉强度（基于标称母材厚度）( F p 图 )。 5.1.2 极限抗拉强度（基于标称修复材料厚度）( F r 图 )。 5.1.3 每个修补层的极限运行力( N j )。

1.1 This test practice defines the procedure for determination of the tensile strength of a tapered or stepped joint of polymer matrix composite materials. It is applicable to secondary bonded or co-bonded laminates with either unidirectional plies or woven fabric reinforcements. The materials to be bonded may be different material systems. In the bondline, a separate adhesive material may or may not be used (example: adhesives may be used with a prepreg system or may not be used with a wet lay-up repair system). The range of acceptable test laminates and thicknesses is described in 8.2.1 . 1.2 This practice supplements Test Method D3039/D3039M for tensile loading. Several important test specimen parameters (for example, joint length, ply overlaps, step depth, and taper ratio) are not mandated by this practice, however, these parameters are required to be specified and reported to support repeatable results. 1.3 Unidirectional (0° ply orientation) tape composites, textile composites, as well as multidirectional composite laminates, can be tested. 1.4 Units— The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.4.1 Within the text the inch-pound units are shown in brackets. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test practice is designed to produce tensile property data for material specifications, research and development, quality assurance, and structural design and analysis. Factors that influence the tensile response and should therefore be reported include the following: materials (laminates and adhesive), methods of material preparation including surface preparation prior to bonding, lay-ups, specimen stacking sequence, joint taper ratio or step length, ply overlap length, material relative thicknesses and stiffness of the parent and repair laminates, adhesive bond stiffness, specimen preparation, specimen conditioning, environment of testing, specimen alignment and gripping, speed of testing, time at temperature, void content, and volume percent reinforcement. Properties in the test direction, which may be obtained from this test practice, include the following: 5.1.1 Ultimate tensile strength (based on the nominal parent material thickness), ( F p tu ). 5.1.2 Ultimate tensile strength (based on the nominal repair material thickness), ( F r tu ). 5.1.3 Ultimate running force per repair ply, ( N j ).