1.1 该试验方法包括通过对宽材料带进行拉伸载荷来测定合成土工膜的性能强度。 1.2 该试验方法包括土工膜抗拉强度和伸长率的测量，并包括计算初始模量、偏移模量、割线模量和断裂韧性的方向。 1.3 该测试方法与其他测量土工膜抗拉强度的方法之间的基本区别在于测试样品的宽度和施加力的速度。本试验方法中规定的试样宽度越大，可最大限度地减少许多土工合成材料中出现的收缩边缘效应（颈缩），并使其与实际使用中的材料行为更为密切。施加应变的较慢速度也提供了与使用中的实际材料行为更密切的关系。 1.4 作为一种性能测试，这种方法将相对较少使用，并用于测试大量材料。 本试验方法不适用于土工膜的常规质量控制试验。 1.5 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.6 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。 1.7 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 该测试方法是一种性能测试，旨在作为设计辅助，用于确定土工膜承受设计条件下施加的应力和应变的能力。 这种测试方法有助于设计工程师在特定测试条件下比较几种候选土工膜。 5.2 作为一种性能测试，该方法不适用于商业运输的土工膜的常规验收测试。其他更容易执行的测试方法，如测试方法 第751天 或测试方法 第882页 ，可用于土工膜的常规验收测试。这种测试方法将相对较少使用，并用于确定土工膜材料的性能特征。 5.2.1 该测试方法与指标测试方法（如测试方法）之间没有已知的相关性 第751天 . 5.3 所有的土工膜都可以通过这种方法进行测试。对于给定的土工膜，根据其物理组成，可能需要对技术进行一些修改。可能需要对坚固的土工膜或表面极其光滑的土工薄膜进行特殊调整，以防止它们在夹具中滑动或被夹具损坏。

1.1 This test method covers the determination of the performance strength of synthetic geomembranes by subjecting wide strips of material to tensile loading. 1.2 This test method covers the measurement of tensile strength and elongation of geomembranes and includes directions for calculating initial modulus, offset modulus, secant modulus, and breaking toughness. 1.3 The basic distinctions between this test method and other methods measuring tensile strength of geomembranes are the width of the specimens tested and the speed of applied force. The greater width of the specimens specified in this test method minimizes the contraction edge effect (necking) which occurs in many geosynthetics and provides a closer relationship to actual material behavior in service. The slower speed of applied strain also provides a closer relationship to actual material behavior in service. 1.4 As a performance test, this method will be used relatively infrequently, and to test large lots of material. This test method is not intended for routine quality control testing of geomembranes. 1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.6 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. 1.7 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 method is a performance test intended as a design aid used to determine the ability of geomembranes to withstand the stresses and strains imposed under design conditions. This test method assists the design engineer in comparing several candidate geomembranes under specific test conditions. 5.2 As a performance test, this method is not intended for routine acceptance testing of commercial shipments of geomembranes. Other more easily performed test methods, such as Test Methods D751 or Test Method D882 , can be used for routine acceptance testing of geomembranes. This test method will be used relatively infrequently and to establish performance characteristics of geomembrane materials. 5.2.1 There is no known correlation between this test method and index test methods, such as Test Methods D751 . 5.3 All geomembranes can be tested by this method. Some modification of techniques may be necessary for a given geomembrane depending upon its physical makeup. Special adaptations may be necessary with strong geomembranes or geomembranes with extremely slick surfaces, to prevent them from slipping in the clamps or being damaged by the clamps.