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Accelerated life testing (ALT) is an effective method of demonstrating and improving product reliability in applications where the products are expected to perform for a long period of time. Even though reliability professionals recognize the significance of high reliability, there are certain challenges which hinder an effective application of ALT principles in practical applications. This paper...
This paper provides an overview of the application of Bayesian inference to accelerated life testing (ALT) models for the concrete case of estimation by Maximum of Aposteriori (MAP) method in the case of constant stress levels. It studies the Bayesian inference over the accelerated life model as presented in [1]. It suites, integrates and generalizes the particular cases presented in [2] and [3]....
Making accurate warranty predictions is challenging. It becomes even more challenging when products are operated under random stresses and random usages. Traditional method only uses the average values of these random variables for warranty prediction. The randomness of the variables is ignored, which may result in inaccurate results. This paper presents methods to solve this issue. Solutions for...
A failure precursor is a measurable parameter which provides an indication of impending failure. By detecting changes in these precursors, deviation of the system from its healthy state can be detected early and unanticipated failures can be avoided. The case study illustrates the use of multivariate state estimation technique (MSET) and sequential probability ratio test (SPRT) to detect the onset...
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