IEC 60793-1-33:2017包含用于确定应力腐蚀敏感性参数的五种主要试验方法的描述。本文件的目的是建立二氧化硅基纤维应力腐蚀敏感性机械特性的统一要求。动态疲劳和静态疲劳试验用于确定应力腐蚀敏感性参数的（动态）nd值和（静态）ns值。目前，仅根据质量标准评估nd值。按照该程序测量的大于18的值反映了二氧化硅的nd值，其约为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在尽可能接近实际应用的条件下的断裂应力和疲劳性能。以下试验方法用于确定应力腐蚀敏感性: 答:？轴向张力动态nd值； 乙:？两点弯曲动态nd值； C:？轴向张力的静态ns值； D:？两点弯曲的静态ns值； E:？均匀弯曲的静态ns值。 这些方法适用于A1、A2和A3类多模光纤、B类单模光纤和C类内连接单模光纤。这些试验提供了应力腐蚀参数n的值，可用于根据IEC TR 62048的可靠性计算。所有方法共有的信息包含在第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分别提供了动态和静态应力腐蚀敏感性参数计算的考虑因素；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。这第二版取消并取代了2001年出版的第一版。它构成技术修订。与上一版相比，该版本包括以下重大技术变化:取消RTM；范围的变化。

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) n_d value and (static) n_s value of stress corrosion susceptibility parameters. Currently, only the n_d-value is assessed against specification. Measured values greater than 18 per this procedure reflect the n_d-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 n_d value by axial tension;
B:？Dynamic n_d value by two-point bending;
C:？Static n_s value by axial tension;
D:？Static n_s value by two-point bending;
E:？Static n_s 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.