1.1 本试验方法通过施加垂直于缝合线的力来测量机织物的缝合线强度。 1.1.1 垂直于缝合缝的轴可以代表经纱轴或纬纱轴，使用抓取试验方法时测试的轴相同 D5034 . 1.1.1.1 本试验方法适用于从先前缝制的物品中获得的缝制接缝，或使用两个特定接缝组件中的一个使用织物样品缝制的接缝，如所示 表1 . 注1: 当机织物结构的性能需要数据来指示最大接缝强度时，将导致接缝两侧的织物失效，可以将标准接缝更改为使用具有两行或多行缝合的重叠接缝类型结构: Lsc-2；Lsc-3；Lsc-4；以及每英寸可使用的最大针数。（参见实践 D6193 .) 1.2 当需要测量机织物缝合缝断裂的最大断裂力时，使用本试验方法。 1.2.1 当需要测量机织物缝合接缝的接缝效率时，使用本试验方法。 1.2.2 该测试方法用于确定发生缝合失败时的缝合线强度阈值，而不会损坏织物，从而可以修复纺织品。 1.2.3 本试验方法用于确定接缝强度导致经纱、填充纱或这些纱线的任何组合滑动和位移的力。 1.3 该测试方法不能预测接缝的实际磨损性能。 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- 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 纺织产品的制造使用接缝工程来确定缝纫线、针迹类型、接缝类型和针迹密度的最佳组合，以构建最终用途结构。这四个接缝工程变量有助于纺织产品在将切割的织物连接在一起时能够实现最大的缝纫接缝强度性能和结构完整性。 5.1.1 众所周知，对于某些纺织结构，接缝工程变量的选择是为了满足“一次性性能要求”。 这意味着，在“单一事件”期间，纺织结构的最大性能潜力或能力已得到满足，预计将被丢弃，并用另一个“新”单元替换。例如:汽车中的安全气囊。一旦部署，必须更换；不能重复使用。同样，还有其他纺织结构，打算多次使用，同时也受到各种护理和维护方案的影响。 5.1.2 本试验方法使机织物的织物生产商、纺织品生产商和试验方法的其他用户能够确定可以做出哪些接缝工程选择: 缝纫线tex尺寸；接缝类型；缝合类型；和缝合密度，以确定使用特定编织物时可能出现的潜在结果: （a） 缝线强度失效时，用这种织物制造的产品能够修复的最大作用力是多少？ （b） 达到的最高煤层效率百分比是多少？ （c） 缝线强度导致缝线滑动的最大力是多少？缝线滑动会导致纱线滑动、纱线位移和织物失效？ 5.1.2.1 缝纫接缝强度或保持的最高接缝效率的最大力表明缝纫失败，而不会导致一个或多个织物纱线从其原始位置移位，这意味着产品可以修复。当故障导致纱线移位时，需要更换纺织产品。 5.1.3 本试验方法中使用的程序代表了实践中确定的两种主要煤层工程技术 D6193 用于制造由机织纺织物制成的产品。 5.1.4 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，这些试样使用相似的接缝组件（或标准接缝组件）。 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。 5.2 该测试方法可用于确定每种织物关键缝合组件的缝合强度和缝合效率。由于缝线强度和缝线效率随每种织物的不同而不同，因此在 表1 ，在比较不同织物的接缝强度时应使用。 表1 列出了使用低密度、中密度和高密度纱线制作的织物的默认接缝组件规格。如果无法确定哪个接缝最适合特定织物，则应评估所有接缝。 5.3 为本试验方法准备的接缝应由熟悉缝纫不当时可能损坏缝合接缝完整性的合格工厂缝纫操作员制作。 5.3.1 如果无法接触到合格的工厂缝纫操作员，熟悉缝纫不当接缝可能造成损坏的实验室技术人员可以准备接缝试样。买方/供应商必须了解缝合不当的接缝对测试结果的影响。 5.4 当需要测定缝合缝强度时，本试验方法适用。接缝和织物的断裂力将允许估计接缝效率。该测试方法可用于评估任何给定织物的接缝强度。 5.5 也可以通过使用该测试方法确定特定织物类型的接缝工程技术。 5.6 该测试方法可用于确定缝合缝何时受到接缝滑动的影响。虽然这种现象的最终后果是破裂，但焊缝滑移大于客户规范中规定的值或买方/供应商同意的值可能会严重降低完整性，从而导致产品无法用于其预期目的。

1.1 This test method measures the sewn seam strength in woven fabrics by applying a force perpendicular to the sewn seams. 1.1.1 The axis perpendicular to the sewn seam can represent either the warp yarn axis or filling yarn axis, the same axis tested when using grab Test Method D5034 . 1.1.1.1 This test method is applicable to sewn seams obtained from a previously sewn article or seams sewn with fabric samples using one of two specific seam assemblies as shown in Table 1 . Note 1: When the performance of a woven textile structure requires data to indicate the maximum seam strength that will result in the failure of fabric on either side of seam, the standard seam can be changed to use the Lapped seam type construction with two or more rows of stitching: Lsc-2; Lsc-3; Lsc-4; and the maximum number of stitches per inch that can be used. (See Practice D6193 .) 1.2 This test method is used when the maximum breaking force measurement to rupture of a woven fabric sewn seam is required. 1.2.1 This test method is used when the seam efficiency measurement of a woven fabric sewn seam is required. 1.2.2 This test method is used to identify the sewn seam strength threshold at which the failure of the stitching occurs, without damage to the fabric, so that the textile product can be repaired. 1.2.3 This test method is used to identify the force at which seam strength results in slippage and displacement of warp yarns, filling yarns, or any combination of these yarns. 1.3 This test method does not predict actual wear performance of a seam. 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 The manufacturing of textile products uses seam engineering to determine the best combination of sewing thread, stitch type, seam type, and stitch density to construct the end use structure. These four seam engineering variables contribute to a textile product being able to achieve the maximum sewn seam strength performance and structural integrity when cut pieces of fabric are joined together. 5.1.1 It is known that for some textile structures the seam engineering variables are selected to meet a “one time performance requirement.” This means that following the “single incident” during which the maximum performance potential or capability of the textile structure has been met, it is expected to be discarded and replaced with another “new” unit. For example: an inflatable restraint in an automobile. Once deployed, it must be replaced; it cannot be re-used. Likewise, there are other textile structures, intended to be used multiple times, while also being subjected to various care and maintenance regimens. 5.1.2 This test method enables the fabric producer of woven fabrics, the textile producer, and other users of the test method to determine which seam engineering choices can be made relative to: sewing thread tex size; seam type; stitch type; and stitch density to determine the potential outcomes that can occur when a particular woven fabric is used: (a) What is the maximum force at which sewn seam strength failure will enable products made with this fabric to be repaired? (b) What is the highest seam efficiency percentage attained? (c) What is the maximum force at which the sewn seam strength results in seam slippage that can cause yarn slippage, yarn displacement and fabric failure? 5.1.2.1 The maximum force at which sewn seam strength or the highest seam efficiency retained demonstrate failure of the stitching without causing the displacement of one or more fabric yarns from their original position mean that the product can be repaired. When the failure results in displacement of yarns, the textile product will need to be replaced. 5.1.3 The procedures used in this test method represent two primary seam engineering techniques identified in Practice D6193 and used to manufacture products made of woven textile fabrics. 5.1.4 In case 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). 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. 5.2 This test method can be used to determine the sewn seam strength and sewn seam efficiency of critical sewn seam assemblies with each fabric. Because sewn seam strength and sewn seam efficiency varies with each fabric, both of the standard seam assemblies, noted in Table 1 , should be used when comparing the seam strength of different fabrics. Table 1 lists the default seam assembly specifications to be used for fabrics made with low, medium and high density yarn counts. If a determination cannot be made as to which seam is the best suited for a particular fabric, all should be evaluated. 5.3 Seams prepared for this test method should be made by competent factory sewing operators familiar with the potential for damage to the integrity of the sewn seam when stitching is improperly done. 5.3.1 If competent factory sewing operators are not accessible, a laboratory technician familiar with the potential for damage of an improperly sewn seam may prepare the seamed test specimens. It is imperative for purchaser/supplier to understand the impact an improperly sewn seam will have on test results. 5.4 This test method is applicable whenever a determination of sewn seam strength is required. The breaking force of the seam and fabric will permit estimation of seam efficiency. This test method can be used as an aid for estimating seam strength for any given fabric. 5.5 Seam engineering techniques for specific fabric types can also be determined by utilizing this test method. 5.6 This test method can be used to determine when the sewn seam is affected by seam slippage. While the ultimate consequence of this phenomenon is rupture, seam slippage greater than either the values stated in customer specifications, or as agreed upon by purchaser/supplier may severely reduce the integrity such that the product cannot be used for its intended purpose.