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A new process capability index for simple linear profile
Communications in Statistics - Theory and Methods, 2021Simple linear profile is referred to the processes that the quality of the process or products is related to a simple linear function between a response and an explanatory variables.
Z. A. Ganji, B. S. Gildeh
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Bayes estimator of process capability index Cpk with a specified prior mean
Communications in Statistics - Theory and Methods, 2021Process capability indices such as Cp , CpL , CpU , and Cpk have been used for evaluating the performance of a manufacturing process in statistical quality control and statistical process control fields.
S. Matsuura
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A robust process capability index
Communications in Statistics - Simulation and Computation, 1998The existing process capability indices (PCI's) assume that the distribution of the process being investigated is normal. For non-normal distributions, PCI's become unreliable in that PCI's may indicate the process is capable when in fact it is not. In this paper, we propose a new index which can be applied to any distribution.
Arthur B. Yeh, Sumankumar Bhattcharya
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A process capability index for discrete processes
Journal of Statistical Computation and Simulation, 2005Perakis and Xekalaki 2002, A process capability index that is based on the proportion of conformance. Journal of Statistical Computation and Simulation, 72(9), 707–718. introduced a process capability index that is based on the proportion of conformance of the process under study and has several appealing features.
Michael Perakis, Evdokia Xekalaki
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On Developing Optimal Process Capability Index
International Journal of Quality & Reliability Management, 1992The process capability indices are used to assess the ability of a process to meet the present specification limits. These indices provide an easily understood qualification of a process performance. A fixed value for an ongoing process capability index is generally used. Minimization of statistical process control costs can be achieved by selecting an
Abdul Raouf, Zulfiqar Ali
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A spatial multivariate process capability index
2010 IEEE International Conference on Industrial Engineering and Engineering Management, 2010Process capability ultimately decides process quality level. Based on analyzing process capability index (PCI), Process capability may be effectively assured. For the multivariate manufacturing processes, tremendous difficulties are often encountered when one attempts to measure the process capability by directly extending the univariate approach ...
Shaoxi Wang, Arthur B. Yeh
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Structured Indexing of Process Capability Data
Volume 3: 7th Design for Manufacturing Conference, 2002Process capability data can aid a design through ensuring the part tolerances are achievable with the current manufacturing capability. Many companies want to store process capability data in databases to make it available to all engineers. The success of a process capability database is highly dependent on the design of its structure and a method to ...
Daniel Kern, Anna Thornton
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The process-oriented multivariate capability index
International Journal of Production Research, 2005Recent literature has proposed multivariate capability indices, but does not suggest a method for measuring quality characteristics in a way that links production irregularities directly to their causes. Our objective is to present a new approach to multivariate capability indices that uses process-oriented basis representation (POBREP) which allows ...
E.J. Foster * +4 more
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A Nonparametric Multivariate Process Capability Index
International Journal of Modelling and Simulation, 2001AbstractFor the multivariate manufacturing processes, tremendous difficulties are often encountered when one attempts to measure the process capability by directly extending the univariate approach, that is, comparing the specification limits (tolerance zones) with the actual process spread. In fact, the existing multivariate process capability indices
A.B. Yeh, H. Chen
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Improved bootstrap confidence intervals for the process capability index Cpk
Communications in statistics. Simulation and computation, 2020The process capability index, Cpk, is a useful tool for assessing the capability of a manufacturing process. There exist three well-known confidence intervals for the process capability index.
Chanseok Park +4 more
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