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Determining the lifetime of CD‐RWs using efficient sampling on a production line
Author(s) -
Chen ChieBein
Publication year - 2003
Publication title -
quality and reliability engineering international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 62
eISSN - 1099-1638
pISSN - 0748-8017
DOI - 10.1002/qre.522
Subject(s) - statistics , sigma , sampling (signal processing) , six sigma , sample size determination , mathematics , confidence interval , inverse , production line , product (mathematics) , range (aeronautics) , computer science , engineering , operations management , physics , quantum mechanics , lean manufacturing , mechanical engineering , geometry , filter (signal processing) , computer vision , aerospace engineering
This work derives the intermittent batch size and sample size for product life testing on a production line. The sequential probability ratio test was adopted to determine the sample size, $n$ , and the expected number of samples (ENS). An inverse chi‐square approximation was used to determine the relationship between the degree of freedom, $m-1$ , and the estimated range of $\sigma^2$ $(ER\,\sigma^2)$ at various $(1-\alpha)$ levels of confidence. Consequently, ENS and $m$ were used to determine the intermittent batch size, $l$ . Finally, rewritable compact disks (CD‐RWs) underwent testing to demonstrate the feasibility and effectiveness of the proposed efficient sampling approach. Copyright © 2003 John Wiley & Sons, Ltd.