1.1 本试验方法包括在垂直于接缝施加力时，使用抓取试验测量由机织物组成的安全气囊垫的接缝效率和最大接缝强度。有关缝纫线的评估，请参阅测试方法 D204 . 1.2 本试验方法仅适用于从安全气囊中获得的接缝或离线制备的接缝，特别是使用未从先前缝合的气囊总成中获得的织物坯料进行试验。接缝可能包括但不限于缝合、OPW、胶合、密封和缝合或熔合（化学或热）。该测试方法可用于生产缓冲垫的批量测试，或用于研发目的。 1.3 当需要测量对规定力、断裂力、最小伸长率或其组合的阻力，以确定安全气囊用特定织物的接缝强度或接缝完整性时，使用本试验方法。 1.4 买方和供应商可通过协议使用本标准中规定以外的程序和仪器，具体偏离报告中确认的标准。 1.5 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不是精确的等价物；因此，每个系统必须相互独立使用。 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。 1.7 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 接缝强度测试用于设计验证和批量验收。 5.2 本试验方法包括测试从安全气囊垫上取下的接缝或可能用于安全气囊垫的接缝类型的接缝强度、接缝效率和故障模式的条件、程序和设备。它旨在作为制定书面零件规范或印刷品的指南。当（基于经验）考虑设备、缓冲设计或其他因素另有规定时，买方和供应商的规范或协议可能会偏离本文所述的程序。 5.3 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，买方和供应商应进行比较测试，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，双方应从待评估的同一批织物中抽取一组试样，利用相似的接缝组件（或标准接缝组件）实现接缝相互作用。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。如果发现偏差，必须确定并纠正其原因，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。 5.4 试验方法 D5822 是一种可靠的测试方法，但可能需要特别注意的程序在本测试方法的精度和偏差部分确定。

1.1 This test method covers the measurement of seam efficiency and the maximum seam strength in inflatable restraint cushions composed of woven fabrics when a force is applied perpendicular to the seam, using a grab test. For evaluating sewing thread, refer to Test Method D204 . 1.2 This test method is restricted to seams that are either obtained from an inflatable restraint cushion or prepared off-line, specifically for testing, using fabric blanks, not obtained from a previously sewn cushion assembly. Seams may include but are not limited to sewn, OPW, glued, sealed and sewn, or fused (chemically or thermally). This test method can be used for either lot testing of production cushions, or for research and development purposes. 1.3 This test method is used when the measurement of a resistance to a specified force, a breaking force, a minimum elongation, or a combination thereof are required to determine the seam strength, or seam integrity of a particular fabric for inflatable restraint use. 1.4 Procedures and apparatus other than those stated in this standard may be used by agreement between purchaser and supplier with the specific deviations from the standard acknowledged in the report. 1.5 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 exact equivalents; therefore, each system must be used independently of the other. 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 Seam strength testing is used for design validation and for lot acceptance. 5.2 This test method constitutes the conditions, procedures, and equipment by which either seams taken from inflatable restraint cushions, or seam types that can potentially be used for inflatable restraint cushions are tested for seam strength, seam efficiency, and failure mode. It is intended to be used as a guideline in establishing a written part specification or print. The specification or agreement of purchaser and supplier may deviate from the procedures described herein when (based on experience) considerations of equipment, cushion design, or other factors dictate otherwise. 5.3 In cases of dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should perform 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 from the same lot of fabric to be evaluated, which utilize a like seam assembly (or standard seam assembly) to achieve seam interaction. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. If a bias is found, either its cause must be determined and corrected, or the purchaser and supplier must agree to interpret future test results in light of the known bias. 5.4 Test Method D5822 is a reliable test method but procedures which may require special attention are identified in the precision and bias section of this test method.