Fuzzy process capability analyses: An application to teaching processes

Ihsan Kaya*, Cengiz Kahraman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Process capability indices (PCIs) are mainly used in industry in order to measure the capability of a process to produce products meeting specifications. Traditionally, the specifications are defined as crisp numbers. Sometimes, specification limits can be expressed as linguistic terms. Traditional PCIs can not be applied for this situation. In this paper, PCIs are analyzed under fuzzy environment. The fuzzy process capability analyses are developed when the specifications limits are represented by triangular and trapezoidal fuzzy numbers. The developed approaches are applied to teaching processes and the fuzzy PCIs are compared based on two different fuzzy ranking methods.

Original languageEnglish
Pages (from-to)259-272
Number of pages14
JournalJournal of Intelligent and Fuzzy Systems
Volume19
Issue number4-5
Publication statusPublished - 2008

Keywords

  • Fuzzy specification limits
  • Process capability indices
  • Ranking methods

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