The economic design of a flexible zone X-chart with AT&T rules.: An article from: IIE Transactions

This digital document is an article from IIE Transactions, published by Institute of Industrial Engineers, Inc. (IIE) on March 1, 1996. The length of the article is 4038 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Duncan's economic design of Shewhart's [Mathematical Expression Omitted]-control chart has established its optimal design for monitoring a process. Recently, there has been a renewed interest in the use of supplementary runs rules to increase the sensitivity of the chart to small shifts. This paper presents: (1) a general version of Duncan's model in that AT&T rules 1 and 2 or AT&T rules 1, 2, and 3 are used, and (2) a flexible-zone methodology in that the zone widths are not fixed a priori but are determined by economic optimization on the basis of the particular situation at work. It is observed that the use of AT&T rules with economic design can result in substantial cost savings over Duncan's design for small shifts in the process average.

Citation Details
Title: The economic design of a flexible zone X-chart with AT&T rules.
Author: Shahrooz Parkhideh
Publication:IIE Transactions (Refereed)
Date: March 1, 1996
Publisher: Institute of Industrial Engineers, Inc. (IIE)
Volume: v28 Issue: n3 Page: p261(6)

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