Variables sampling plans for Weibull distributed lifetimes under sudden death testing
Variables sampling plans for Weibull distributed lifetimes under sudden death testing
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DOI：
10.1109/tr.2005.863802
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发表时间：
2006-03-01
影响因子：
5.9
通讯作者：
Lee, SH
中科院分区：
文献类型：
--
作者：
Jun, CH;Balamurali, S;Lee, SH
猝死试验可用于决定成品零件的批号验收。对于形状参数已知且寿命服从威布尔分布的零件，提出了单采样和双采样方案。建议图则与现有图则的不同之处在于，批核标准并不取决于估计的规模参数。两种抽样方案的设计参数均采用通常的两点法确定。组数的确定与组大小无关，甚至与形状参数无关。此外，双重抽样计划可以减少所需的平均组数。分析和讨论了单次抽样方案下形状参数不规范对接受概率的影响。
Sudden death testing can be utilized for deciding upon the lot acceptance of manufactured parts. Variables single, and double sampling plans are proposed for the lot acceptance of parts whose life follows a Weibull distribution with known shape parameter. The proposed plans are different from the existing ones in that the lot acceptance criteria do not depend on the estimated scale parameter. Design parameters of both sampling plans are determined by using the usual two-point approach. The number of groups is determined independently of the group size, and even independently of the shape parameter. Also, the double sampling plan can reduce the average number of groups required. The effects of mis-specification of the shape parameter on the probability of accepting the lots under the single sampling plan are analyzed & discussed.