1.1 本试验方法测定了由天然或人造弹性体单独或与其他纺织纤维结合制成的窄弹性织物在洗涤前后通过静载荷测试程序进行测试时的伸长率特性。 注1: 关于使用恒定拉伸速率（CRE）型拉伸试验机测定类似特性，请参阅试验方法 D4964 . 注2: 关于使用恒定负载率（CRL）型拉伸试验机确定类似特性，请参阅试验方法 D1775 . 1.2 使用本试验方法需要选择或共同商定有效静载荷，以确定试验结果。 1.3 使用的清洗程序将是试验方法AATCC 135中规定的3个清洗和干燥循环。 1.4 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不是精确的等效值； 因此，每个系统应相互独立使用。将两个系统的值合并可能会导致不符合标准。 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）。本标准的用户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（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 该试验方法被认为适用于窄弹性织物商业装运的验收试验，因为该试验方法在贸易中用于验收试验。 5.1.1 如果在使用本测试方法进行商业装运验收测试时，由于报告测试结果的差异而产生争议，双方应进行比较测试，以确定其实验室之间是否存在统计偏差。建议为调查偏差提供称职的统计协助。作为最低要求，双方应尽可能均匀地从大量相关类型的材料中选取一组试样。然后，应将试样以相同数量随机分配给每个实验室进行测试。两个实验室的平均结果应使用学生的 t -测试未配对数据和双方在测试开始前选择的可接受概率水平。如果发现偏差，必须找到原因并纠正，或者买方和供应商必须同意根据已知偏差解释未来的测试结果。 5.2 本试验方法规定了静载荷装置的使用。本试验方法的用户应注意，使用本试验方法获得的伸长率试验数据与使用恒定拉伸速率（CRE）或恒定加载速率（CRL）型拉伸试验机获得的伸长率试验数据不可比。

1.1 This test method determines the elongation characteristics of narrow elastic fabrics made from natural or man-made elastomers, either alone or in combination with other textile fibers, when tested with a static load testing procedure before or after laundering. Note 1: For determination of similar characteristics using the constant-rate-of-extension (CRE) type tensile testing machine, refer to Test Method D4964 . Note 2: For determination of similar characteristics using the constant-rate-of load (CRL) type tensile testing machine, refer to Test Method D1775 . 1.2 The use of this test method requires the selection of, or mutual agreement upon, the effective static load at which the test results will be determined. 1.3 Laundering procedures used will be those specified in Test Method AATCC 135 for 3 washing and drying cycles. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 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 method is considered satisfactory for acceptance testing of commercial shipments of narrow elastic fabrics because the test method is used in the trade for acceptance testing. 5.1.1 In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the parties should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using student's t -test for unpaired data and an acceptable probability level chosen by the two parties before testing is begun. If bias is found, either the cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias. 5.2 This test method specifies the use of a static load apparatus. Users of this test method are cautioned that elongation test data obtained using this test method are not comparable to elongation test data obtained using either constant-rate-of-extension (CRE) or constant-rate-of-loading (CRL) type tensile testing machines.