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Evaluation of process capability indices of linear profiles

Hosseinifard, Seyedehzahra and Abbasi, Babak 2012, Evaluation of process capability indices of linear profiles, International journal of quality and reliability management, vol. 29, no. 2, pp. 162-176, doi: 10.1108/02656711211199892.

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Title Evaluation of process capability indices of linear profiles
Author(s) Hosseinifard, Seyedehzahra
Abbasi, Babak
Journal name International journal of quality and reliability management
Volume number 29
Issue number 2
Start page 162
End page 176
Total pages 15
Publisher Emerald Goup Publishing
Place of publication Bingley, Eng.
Publication date 2012-01-01
ISSN 0265-671X
Keyword(s) Process capability analysis
Linear profiles
Quality engineering
Proportion of non-conformance
Summary Purpose: In profile monitoring, which is a growing research area in the field of statistical process control, the relationship between response and explanatory variables is monitored over time. The purpose of this paper is to focus on the process capability analysis of linear profiles. Process capability indices give a quick indication of the capability of a manufacturing process. Design/methodology/approach: In this paper, the proportion of the non-conformance criteria is employed to estimate process capability index. The paper has considered the cases where specification limits is constant or is a function of explanatory variable X. Moreover, cases where both equal and random design schemes in profile data acquisition is required (as the explanatory variable) is considered. Profiles with the assumption of deterministic design points are usually used in the calibration applications. However, there are other applications where design points within a profile would be i.i.d. random variables from a given distribution. Findings: Simulation studies using simple linear profile processes for both fixed and random explanatory variable with constant and functional specification limits are considered to assess the efficacy of the proposed method. Originality/value: There are many cases in industries such as semiconductor industries where quality characteristics are in form of profiles. There is no method in the literature to analyze process capability for theses processes, however recently quite a few methods have been presented in monitoring profiles. Proposed methods provide a framework for quality engineers and production engineers to evaluate and analyze capability of the profile processes. © Emerald Group Publishing Limited.
Language eng
DOI 10.1108/02656711211199892
Field of Research 150307 Innovation and Technology Management
150302 Business Information Systems
150399 Business and Management not elsewhere classified
Socio Economic Objective 910499 Management and Productivity not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2012, Emerald Group Publishing
Persistent URL http://hdl.handle.net/10536/DRO/DU:30087304

Document type: Journal Article
Collection: Department of Information Systems and Business Analytics
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