Degradation models and implied lifetime distributions

Reliability Testing and Data Analysis

“…This implicitly specified lifetime model may not match the explicitly assumed lifetime distribution in some characteristic such as the shape of failure rate function (see Ref. [1]). In this case, the assumption for the degradation model or assumption for the lifetime model should be adjusted to make them consistent.…”

Nonlinear degradation modeling and maintenance policy for a two-stage degradation system based on cumulative damage model

“…• t c ~U (1,60 The upper bound value of the uniform distribution is evaluated as 120, it is considered that system fault occurs mostly in the second degradation stage M 2 on this occasion. Early and late change-point distributions present the first and second half of whole change-point distribution, respectively.…”

“…Especially, degradation process modeling is an important approach for evaluating the reliability of high reliable products [1,2].…”

Direct Prediction Methods on Lifetime Distribution of Organic Light-Emitting Diodes From Accelerated Degradation Tests

“…Some authors recommended strategies for choosing the most proper distribution among the candidates. In particular, Bae et al [3] asserted that careful attention should be paid before assuming the lifetime distribution for degradation data because the assumption of the degradation model may create a strong restriction on the lifetime distribution. To minimize the risk of model mis-specification, we introduce an empirical method rather than assuming a specified lifetime distribution: a logspline density estimation.…”