Open AccessIsolated truncated chain deferred sampling plan for Weibull product life distribution
Author(s) -
J. O. Braimah,
P. A. Osanaiye
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1366/1/012127
Subject(s) - weibull distribution , acceptance sampling , statistics , sample size determination , product (mathematics) , sample (material) , accelerated life testing , test plan , sampling (signal processing) , reliability engineering , plan (archaeology) , mathematics , computer science , engineering , chemistry , geometry , archaeology , filter (signal processing) , chromatography , computer vision , history
In this article, an Isolated Truncated Chain deferred Sampling Plan for Weibull product life distribution is proposed when the testing is truncated at a specified time. This type of sampling plan is used to save the testing time. The optimal sample sizes, required for testing product quality to ascertain a true mean life are obtained under a given Maximum Allowable Percent Defective, test termination ratios and acceptance numbers. The operating characteristics formula of the proposed plan was developed. The operating characteristics and mean-ratio were used to assess the performance of the plan. The study revealed that: Weibull distribution have low failure rate; as mean life ratio increase, the failure rate reduces and the minimum sample size increase as the acceptance number, maximum allowable percent defective and experiment time ratio increases; The study concluded that the modified required minimum sample sizes were smaller compared to those in the literature making it a more economical plan to be adopted when time and cost of production is expensive and the testing is destructive.