光纤 - 第1-33部分:测量方法和测试程序 - 应力腐蚀敏感性

[中文适用范围]： IEC 60793 的这一部分包含用于确定应力腐蚀敏感性参数的五种主要测试方法的描述。本文件的目的是对硅基纤维的应力腐蚀敏感性机械特性建立统一的要求。采用动态疲劳和静态疲劳试验来确定应力腐蚀敏感性参数的（动态）nd值和（静态）ns值。目前@仅根据规范评估 nd 值。每个程序中大于 18 的测量值反映了二氧化硅@的 nd 值，该值约为 20。较高的值不会转化为明显增强的抗疲劳性。二氧化硅纤维机械测试确定了尽可能接近模拟实际应用的条件下的断裂应力和疲劳性能。以下测试方法用于确定应力腐蚀敏感性： ?CA：轴向拉力的动态 nd 值； ?CB：两点弯曲动态nd值； ?CC：轴向拉力静态ns值； ?CD：两点弯曲静态ns值； ?CE：均匀弯曲的静态ns值。这些方法适用于 A1 类@ A2 和 A3 类多模@ B 类单模光纤和 C 类内连接单模光纤。这些测试提供了应力腐蚀参数@ n@ 的值，可用于根据 IEC TR 62048 [18]1 进行可靠性计算。所有方法通用的信息包含在第 1 至 10@ 条中，与每种单独测试方法相关的信息出现在附录 A@ B@ C@ D@ 和 E 中。附录 F 和 G 提供了动态和静态应力腐蚀敏感性参数计算的注意事项@ 分别;附录 H 提供了对不同应力腐蚀敏感性参数测试方法的考虑。 1 方括号中的数字指的是参考书目 [外文原描述]： IEC 60793-1-33:2017 contains descriptions of the five main test methods for the determination of stress corrosion susceptibility parameters. The object of this document is to establish uniform requirements for the mechanical characteristic of stress corrosion susceptibility for silica-based fibres. Dynamic fatigue and static fatigue tests are used to determine the (dynamic) nd value and (static) ns value of stress corrosion susceptibility parameters. Currently, only the nd-value is assessed against specification. Measured values greater than 18 per this procedure reflect the nd-value of silica, which is approximately 20. Higher values will not translate to demonstrable enhanced fatigue resistance. Silica fibre mechanical tests determine the fracture stress and fatigue properties under conditions that model the practical applications as closely as possible. The following test methods are used for determining stress corrosion susceptibility: A: Dynamic nd value by axial tension; B: Dynamic nd value by two-point bending; C: Static ns value by axial tension; D: Static ns value by two-point bending; E: Static ns value by uniform bending. These methods are appropriate for category A1, A2 and A3 multimode, class B single-mode fibres and class C intraconnecting single-mode fibres. These tests provide values of the stress corrosion parameter, n, that can be used for reliability calculations according to IEC TR 62048. Information common to all methods is contained in Clauses 1 to 10, and information pertaining to each individual test method appears in Annexes A, B, C, D, and E. Annexes F and G offer considerations for dynamic and static stress corrosion susceptibility parameter calculations, respectively; Annex H offers considerations on the different stress corrosion susceptibility parameter test methods. This second edition cancels and replaces the first edition published in 2001. It constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: removal of RTM; changes to scope.