IEC TR 62048:2014（E）是一个指南，给出了基于裂纹扩展幂律的恒定使用应力下估计纤维可靠性的公式。本第三版取消并取代2011年出版的第二版，构成技术性修订。与上一版相比的主要变化如下: -修正表1中的故障率单位； -除了所有呼叫和推导之外，还校正瞬时故障率[19]的拟合方程； -插入关于故障率的纤维长度依赖性的新注释； -增加资料性附件A和相关参考文献； -对不一致之处的编辑更正。 关键词:纤维可靠性、使用应力、裂纹扩展幂律

IEC TR 62048:2014(E) is a guideline that gives formulae to estimate the reliability of fibre under a constant service stress based on a power law for crack growth. This third edition cancels and replaces the second edition published in 2011, and constitutes a technical revision. The main changes with respect to the previous edition are listed below:
- correction to the unit of failure rates in Table 1;
- correction to the FIT equation for instantaneous failure rate [19] in addition to all call-outs and derivations;
- insertion of a new note about fibre length dependency of failure rates;
- addition of informative Annex A and relevant reference;
- editorial corrections of inconsistencies. Keywords: reliability of fibre, service stress, power law for crack growth