Failure-Free Period Life Tests
Failure-Free Period Life Tests
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DOI：
10.1080/00401706.1985.10488013
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发表时间：
1985-02
期刊：
影响因子：
2.5
通讯作者：
J. Angus;R. Schafer;Sally Van Den Berg;Herbert C. Rutemiller
中科院分区：
文献类型：
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作者：
J. Angus;R. Schafer;Sally Van Den Berg;Herbert C. Rutemiller
无故障周期寿命测试 (FFPLT) 由一对实数 (t, T) 定义，0 < t ≤ T，当且仅当在允许的 T 个时间单位内实现 t 个连续时间单位的无故障周期时，测试才通过。不合格品予以更换，更换时间不计算在内。此类测试已在Mil中引入。标准。 781D（美国国防部 1980）。该测试是在假设具有恒定故障率 λ 的指数到达间隔时间的情况下根据更新过程进行研究的。测试计划是针对常用的生产者和消费者的风险和歧视比率而制定的。这些测试与众所周知的时间截断和顺序更换寿命测试进行了比较。还提出了基于测试结果的 λ 的点和区间估计方法。证明了无偏性和一致性，并给出了其他渐近性质。
A failure-free period life test (FFPLT) is defined by a pair of real numbers (t, T), 0 < t ≤ T, such that the test is passed if, and only if, a failure-free period of t consecutive time units is achieved in the T time units allowed. Failed items are replaced, and replacement time is not counted. Such tests have been introduced in Mil. Std. 781D (US. Department of Defense 1980). This test is studied in terms of a renewal process under the assumption of exponential interarrival times with constant failure rate λ. Test plans are developed for commonly used producer's and consumer's risks and discrimination ratios. The tests are compared to the well-known time-truncated and sequential-replacement life tests. Also presented are methods for point and interval estimation of λ based on test results. Unbiasedness and consistency are proved and other asymptotic properties are given.