光纤 - 第1-31部分:测量方法和测试程序 - 拉伸强度

[中文适用范围]： IEC 60793 的这一部分提供了光纤样品动态负载下的拉伸强度值。该方法测试未成缆和未捆绑的玻璃光纤的各个长度。纤维部分在受控增加的应力或应变的作用下断裂，该应力或应变在整个纤维长度和横截面上是均匀的。应力或应变以名义上恒定的速率增加，直到发生断裂。给定纤维的拉伸强度值的分布很大程度上取决于样品长度@加载速度和环境条件。该测试可用于需要纤维强度统计数据的检查。结果通过统计质量控制分布来报告。通常，测试是在样品经过温度和湿度调节后进行的。然而@在某些情况下@在环境温度和湿度条件下测量值就足够了。本方法适用于A1@、A2@和A3@类以及B类和C类光纤。本文件的目的是建立机械特性的统一要求：拉伸强度。 [外文原描述]： IEC 60793-1-31:2019 provides values of the tensile strength under dynamic loading of optical fibre samples. The method tests individual lengths of uncabled and unbundled glass optical fibre. Sections of fibre are broken with controlled increasing stress or strain that is uniform over the entire fibre length and cross section. The stress or strain is increased at a nominally constant rate until breakage occurs. The distribution of the tensile strength values of a given fibre strongly depends on the sample length, loading velocity and environmental conditions. The test can be used for inspection where statistical data on fibre strength is required. Results are reported by means of statistical quality control distribution. Normally, the test is carried out after temperature and humidity conditioning of the sample. However, in some cases, it can be sufficient to measure the values at ambient temperature and humidity conditions. This method is applicable to categories A1, A2, and A3, and classes B and C optical fibres. The object of this document is to establish uniform requirements for the mechanical characteristic: tensile strength. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) correction of Formulae (3b) and (4b) and renumbering of formulae. Keywords: tensile strength under dynamic loading of optical fibre samples