可靠性试验.恒定失效率和恒定失效强度的符合性试验

[中文适用范围]： 本国际标准提供了一系列优化的试验计划、相应的运行特性曲线和预期试验时间。此外，还给出了使用电子表格程序设计试验计划的算法，以及如何选择试验计划的指导。本标准规定了测试程序，以验证观察到的以下值是否符合给定要求：故障率、故障强度、平均故障间隔时间（MTTF）、平均运行时间间隔（MTBF）。除非另有说明，假设在累积试验时间内，故障时间或运行时间间隔是独立且同分布的指数分布。此假设意味着故障率或故障强度是恒定的。描述了四种类型的试验计划：截尾序贯试验、时间/故障截尾试验、无更换的日历时间截尾试验、组合试验计划。本标准不涉及如何计划、执行、分析和报告试验的指导。这些信息可在 IEC 60300-3-5 中找到。本标准未描述试验条件。这些信息可在 IEC 60605-2 和 IEC 60300-3-5 中找到。 [外文原描述]： IEC 61124:2012 gives a number of optimized test plans, the corresponding operating characteristic curves and expected test times. In addition the algorithms for designing test plans using a spreadsheet program are also given, together with guidance on how to choose test plans. This standard specifies procedures to test whether an observed value of: failure rate, failure intensity, meantime to failure (MTTF), and mean operating time between failures (MTBF). The main changes with respect to the previous edition are as follows: - A number of new test plans have been added based on the Russian standard GOST R 27.402 [1], and it is intended to align the new edition of MIL-HDBK-781 [2] with this edition. Algorithms for optimizing test plans using a spreadsheet program are given and a number of optimized test plans are listed. Furthermore, emphasis is laid on the fact that the test should be repeated following design changes; - Discrepancies in test plans A, B as well as Annexes A and B that originated in IEC 60605-7 [3], now withdrawn, have been corrected so these test plans differ from those given in previous editions of IEC 61124. As requested by the National Committees, mathematical background material and spreadsheet program information has been moved to informative annexes. In addition, the symbol lists have been divided, so that some annexes have separate lists of symbols; - Guidance on how to choose test plans has been added as well as guidance on how to use spreadsheet programs to create them. Test plans A.1 to A.9 and B.1 to B.13 have been corrected; - Subcluses 8.1, 8.2, 8.3, Clause 9, Annex C, Clauses G.2, I.2, I.3 and Annex J are unchanged, except for updated terminology and references. The contents of the corrigendum of January 2013 have been included in this copy.