Fuzzy Multivariate Process Capability Index for Measuring Process Capability

Document Type : Research Paper


1 Iran Statistics Center (ISC), Industrial department, Tehran, Iran

2 Department of Industrial Engineering, Mazandaran University of Science and Technology, Babul, Iran

3 Master student of Industrial Engineering, Sadjad Higher Education Institute, Mashhad, Iran


Abstract. In the case of process capability index several methods are identified. In this paper ,a new process capability index using fuzzy number and fuzzy probability concept, in order to remove the weakness of other famous method is suggested. After introduction of fuzzy index in univariate case, fuzzy multivariate process capability index is investigated. Finally, this new method is compared to three well-known methods in literature review, with numerical example.


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Volume 2, Issue 4 - Serial Number 8
October 2016
Pages 41-53
  • Receive Date: 25 January 2014
  • Revise Date: 25 March 2014
  • Accept Date: 25 June 2014
  • First Publish Date: 01 October 2016