Reliability Acceptance Sampling Research Articles

Designing variable sampling plans based on lifetime performance index under failure censoring reliability tests

In this paper, we develop two novel variable reliability acceptance sampling (RAS) plans referred to repetitive group sampling (RGS) and resubmitted sampling (RS), for failure censoring reliability tests by considering information obtained during life test using lifetime performance index (LPI) under Weibull distribution assumption for item lifetime. Performances of the proposed plans are compared with the single sampling (SS) plan through real case studies which show the great performances of proposed plans in terms of minimization of the average failure number of tested items.

Sprt and cusum results for inverse gaussian processes

The inverse gaussian distribution is a flexible model with applications in generalized linear models and accelerated life testing where early failure times predominate. Recently it has received attention in quality improvement and as a model for which an alternative to the analysis of variance, known as analysis of reciprocals, exists. In reliability testing and acceptance sampling data acquisition is often resource inhibited and may be both costly and time-consuming. In such settings it is desirable to reach a statistically sound decision as quickly as possible. Based on sequential probability ratio tests (SPRT), sequential sampling/ cumulative sum (CUSUM) plans allow for timely, statistically based decisions. SPRT and CUSUM results for the inverse gaussian process mean when the value of the shape parameter of the density is known are presented in this paper.

Maintainability Test Plans Based on Trichotomous Classification of Repair Times

Recent literature in the areas of reliability and maintainability evaluation and acceptance sampling has suggested the potential of trichotomous classifications of lot quality and reliability/maintenance levels as opposed to the usual dichotomous classi..