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Accelerated Destructive Degradation Tests: Data, Models, and Analysis

机译:加速破坏性退化测试:数据,模型和分析

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摘要

Degradation data analysis is a powerful tool for reliability assessment. Useful reliability information is available from degradation data when there are few or even no failures. For some applications the degradation measurement process destroys or changes the physical/mechanical characteristics of test units. In such applications, only one meaningful measurement can be can be taken on each test unit. This is known as “destructive degradation.” Degradation tests are often accelerated by testing at higher than usual levels of accelerating variables like temperature.This chapter describes an important class of models for accelerated destructive degradation data. We use likelihood-based methods for inference on both the degradation and the induced failure-time distributions. The methods are illustrated with the results of an accelerated destructive degradation test for an adhesive bond.
机译:降级数据分析是可靠性评估的强大工具。当故障很少甚至没有故障时,可以从降级数据中获得有用的可靠性信息。对于某些应用,退化测量过程会破坏或改变测试单元的物理/机械特性。在这样的应用中,每个测试单元只能进行一次有意义的测量。这称为“破坏性降级”。退化测试通常通过在比正常水平更高的加速变量水平(例如温度)下进行测试来加速。本章介绍了一类重要的模型,用于加速破坏性退化数据。我们使用基于似然的方法来推断退化和诱发的失效时间分布。通过对胶粘剂进行加速破坏性降解测试的结果来说明这些方法。

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