Fuzzy quality and analysis on fuzzy probability
Fuzzy Sets and Systems - Special issue on fuzzy methodology in system failure engineering
Reasonable properties for the ordering of fuzzy quantities (II)
Fuzzy Sets and Systems
Fuzzy Sets and Systems: Theory and Applications
Fuzzy Sets and Systems: Theory and Applications
Fuzzy confidence interval for fuzzy process capability index
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology
A First Course in Fuzzy Logic, Third Edition
A First Course in Fuzzy Logic, Third Edition
Fuzzy estimation for process capability indices
Information Sciences: an International Journal
Fuzzy process capability analyses: An application to teaching processes
Journal of Intelligent & Fuzzy Systems: Applications in Engineering and Technology - Fuzzy theory and technology with applications
Construction of p-charts using degree of nonconformity
Information Sciences: an International Journal
Development of fuzzy process accuracy index for decision making problems
Information Sciences: an International Journal
Fuzzy confidence regions for the Taguchi capability index
International Journal of Systems Science
Process capability analyses with fuzzy parameters
Expert Systems with Applications: An International Journal
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In quality control, such as other statistical problems, we may confront imprecise concepts. One case is a situation in which specification limits are two fuzzy sets. In such a fuzzy environment, the product is not qualified with a two valued Boolean view, but to some degree depending on the quality level of the product and the strictness of the decision maker. This matter can be cause to a justified judgment in decision making on manufacturing processes. The generalized process capability indices $C_{\widetilde{p}}$, $C_{\widetilde{pk}}$ and $C_{\widetilde{pm}}$ can be helpful and necessary for measuring the fuzzy quality in an in-control process. In this paper, the generalized Taguchi index $C_{\widetilde{pm}}$ is proposed to provide an assessment of the ability of the fuzzy process to be clustered around the target value. Considering fuzzy specification limits we present four approximate 1001-γ% confidence intervals for the generalized process capability index $C_{\widetilde{pm}}$ in this paper. Then, we obtain several fast computable 1001-γ% confidence intervals for $C_{\widetilde{pm}}$, where the fuzzy specification limits are linear, normal or elliptic. An industrial example is given to show the performance of the proposed method.