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Standard Test Method for Abrasion Resistance of Textile Webbing (Hex Bar Method) 织物网耐磨性的标准试验方法(六角棒法)
发布日期: 2024-06-01
1.1 本试验方法包括使用六角棒磨损试验机测定织物织带的耐磨性。 1.1.1 阻力表示为保留破断拉力的百分比。 1.2 以国际单位制表示的值应被视为标准值。SI单位后括号中给出的值仅供参考,不被视为标准值。 1.3 本标准并不旨在解决与其使用相关的所有安全问题(如果有的话)。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践,并确定监管限制的适用性。 1.4 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 织物织带耐磨性的测量非常复杂。耐磨性受到许多因素的影响,包括纤维的固有机械性能;纤维的尺寸; 纱线的结构;织带的构造;添加到纤维、纱线或织带中的处理类型、种类和数量;研磨剂的性质;研磨剂在被研磨的试样区域上的可变作用;试样上的张力;试样和研磨剂之间的压力;以及试样的尺寸变化。 5.2 通过本试验方法测量的织物织带的耐磨性不包括实际使用中磨损性能或耐用性的所有因素。虽然以循环次数和耐用性(定义为在使用中承受劣化或磨损的能力,包括磨损的影响)表示的耐磨性经常相关,但这种关系因不同的最终用途而异。 在根据特定磨损数据计算预测耐久性时,可能需要不同的因素。 5.3 在各种材料的耐磨性差异较大的情况下,实验室测试可能是可靠的,可以作为相对最终用途的指示,但在实验室测试结果差异较小的情况下不应依赖它们。一般来说,除非有数据表明实验室磨损试验与预期最终用途中的实际磨损之间存在特定关系,否则不应依赖这些结果来预测特定最终用途的实际磨损寿命期间的性能。 5.4 这些一般观察适用于汽车、航空航天、工业和军事应用中使用的大多数网状物。 5.5 该测试方法可用于商业货物的验收测试,但应谨慎进行比较,因为实验室间精度的估计不完整。 5.6 如果两个(或多个)实验室报告的测试结果之间存在实际意义的差异,应使用合格的统计辅助进行比较测试,以确定它们之间是否存在统计偏差。 作为最低要求,使用尽可能同质的样品进行此类比较测试,这些样品与在初始测试中产生不同结果的样品来自同一批材料,并随机分配给每个实验室。应使用未配对数据的统计检验,在测试系列之前选择的概率水平上,对相关实验室的测试结果进行比较。若发现偏差,则必须找到并纠正其原因,或者必须根据已知的偏差调整未来的测试结果。
1.1 This test method covers the determination of abrasion resistance of textile webbing using a hex bar abrasion tester. 1.1.1 The resistance is expressed as a percentage of retained breaking force. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 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. 1.4 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 measurement of the resistance to abrasion of textile webbing is very complex. The resistance to abrasion is affected by many factors that include the inherent mechanical properties of the fibers; the dimensions of the fibers; the structure of the yarns; the construction of the webbing; the type, kind, and amount of treatment added to the fibers, yarns, or webbing; the nature of the abradant; the variable action of the abradant over the specimen area abraded; the tension on the specimen; the pressure between the specimen and the abradant; and the dimensional changes in the specimen. 5.2 The resistance of textile webbing to abrasion as measured by this test method does not include all the factors which account for wear performance or durability in actual use. While the abrasion resistance stated in terms of the number of cycles and durability (defined as the ability to withstand deterioration or wearing out in use, including the effects of abrasion) are frequently related, the relationship varies with different end uses. Different factors may be necessary in any calculation of predicted durability from specific abrasion data. 5.3 Laboratory tests may be reliable as an indication of relative end use in cases where the difference in abrasion resistance of various materials is large, but they should not be relied upon where differences in laboratory test findings are small. In general, the results should not be relied upon for prediction of performance during actual wear life for specific end uses unless there are data showing the specific relationship between laboratory abrasion tests and actual wear in the intended end use. 5.4 These general observations apply to most webbings that are used in automotive, aerospace, industrial, and military applications. 5.5 This test method can be used for acceptance testing of commercial shipments but comparisons should be made with caution because estimates of between-laboratory precision are incomplete. 5.6 If there are differences of practical significance between reported test results for two laboratories (or more), comparative tests should be performed to determine if there is a statistical bias between them, using competent statistical assistance. As a minimum, use samples for such comparative tests that are as homogenous as possible, drawn from the same lot of material as the samples that resulted in disparate results during initial testing, and randomly assigned in equal numbers to each laboratory. The test results from the laboratories involved should be compared using a statistical test for unpaired data, at a probability level chosen prior to the testing series. If bias is found, either its cause must be found and corrected, or future test results must be adjusted in consideration of the known bias.
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归口单位: D13.60
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