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Probability-Based Process Capability Indices
Communications in Statistics - Simulation and Computation, 2009This article deals with alternative process capability indices (PCIs) to traditional basic PCIs C p , C pk , and C pm based on different fraction conforming type of probabilities. In view of various problems of constructing capability indices for univariate as well as multivariate set up, these alternative PCIs are very useful as compared to C p , C pk
K. G. Khadse, R. L. Shinde
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On Generalizing Process Capability Indices
Quality Technology & Quantitative Management, 2010AbstractA generalized process capability index, defined as the ratio of proportion of specification conformance (or, process yield) to proportion of desired (or, natural) conformance, has been developed. Almost all the process capabilities defined in the literature are directly or indirectly associated with this generalized index. Normal as well as non-
Sudhansu S. Maiti +2 more
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Dynamic Process Capability Indices
Asian Journal on Quality, 2002Process capability indices as an important kind of indices are intended to provide single‐number assessments of the inherent process capability to meet specification limits on quality characteristic(s) of interest. In this paper the condition for the application of process capability indices is analyzed.
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Squared Error Loss of Process Capability Indices
Economic Quality Control, 2001In this paper, we extend Johnson's work (2) of formulating the relationship between process capability indices (PCI) and expected squared error losses. Moreover, a comparison is made between the expected squared error loss of PCI under the specified capability index value.
Chen, Chung-Ho, Chou, Chao-Yu
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Bootstrap test for process capability indices
International Journal of Quality & Reliability Management, 2017Purpose The purpose of this paper is to construct a statistical hypotheses test for process capability indices and compare the pairs of them with a fixed sample size. Design/methodology/approach Since the sampling distribution of the estimators of pairs of two process capability indices (PCIs) is very complex, an exact statistical hypothesis test ...
Bahram Sadeghpour Gildeh +2 more
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Process capability indices and product reliability
Microelectronics Reliability, 2001Abstract This paper discusses process capability indices— C p and C p k , their underlying assumptions, and the relationships between process capability indices and product reliability. An actual case is presented to demonstrate this relationship.
Bharatwaj Ramakrishnan +2 more
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Process capability indices for skewed populations
Quality and Reliability Engineering International, 2002AbstractThis paper proposes a new method of constructing process capability indices (PCIs) for skewed populations. It is based on a weighted standard deviation method which decomposes the standard deviation of a quality characteristic into upper and lower deviations and adjusts the value of the PCI using decomposed deviations in accordance with the ...
Y.S. Chang +2 more
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Bayesian testing for process capability indices
South African Statistical Journal, 2019Process capability indices have been widely used in the manufacturing industry. They measure the ability of a manufacturing process to produce items that meet certain specifications. A capability index relates the voice of the customer (specification limits) to the voice of the process.
A. J. van der Merwe +2 more
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Three New Multivariate Process Capability Indices
Communications in Statistics - Theory and Methods, 2012Different multivariate process capability indices are developed by researchers to evaluate process capability when vectors of quality characteristics are considered in a study. This article presents three indices referred to as NCpM, MCpM, and NMC PM in order to evaluate process capability in multivariate environment.
Mohammad R. Niavarani +2 more
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