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Article Dans Une Revue Quality and Reliability Engineering International Année : 2019

A Synthetic median control chart for monitoring process mean with measurement errors

Résumé

Recent studies show that Shewhart median chart is widely used for detecting shifts in a process, but it is often rather inefficient in detecting small or moderate process shifts. In order to overcome this problem, a Synthetic chart can be used. This chart outperforms the Shewhart type chart because it uses the information about the time interval between two consecutive nonconforming samples. In this paper, we propose and study the Phase II Synthetic median control chart. A Markov chain methodology is used to evaluate the statistical performance of the proposed chart. Moreover, its performance is investigated in the presence of measurement errors, which are modelled by a linear covariate error model. We provide the results of an extensive numerical analysis with several tables and figures in order to show the statistical performance of the investigated chart, for both cases of measurement errors and no measurement errors. Finally, an example illustrates the use of the Synthetic median chart.
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Dates et versions

hal-02562704 , version 1 (04-05-2020)

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Kim Phuc Tran, Phuong Hanh Tran, Athanasios Rakitzis. A Synthetic median control chart for monitoring process mean with measurement errors. Quality and Reliability Engineering International, 2019, ⟨10.1002/qre.2447⟩. ⟨hal-02562704⟩
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