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|Title: ||Control charts with predetermined sampling intervals|
|Authors: ||Rodrigues Dias, José|
|Editors: ||van der Wiele, Ton|
|Keywords: ||Control charts|
Predetermined sampling intervals
Statistical quality control
|Issue Date: ||2008|
|Abstract: ||Purpose – The aim of this study is to investigate a new sampling methodology previously proposed for
systems with a known lifetime distribution: the Predetermined Sampling Intervals (PSI) method.
Design/methodology/approach – The methodology is defined on basis of system hazard cumulative rate,
and is compared with other approaches, particularly those whose parameters may change in real time,
taking into account current sample information.
Findings – For different lifetime distributions, the results obtained for adjusted average time to signal
(AATS) using a control chart for the sample mean are presented and analysed. They demonstrate the high
degree of statistical performance of this sampling procedure, particularly when used in systems with an
increasing failure rate distribution.
Practical implications – This PSI method is important from a quality and reliability management point
Originality/value - This methodology involves a process by which sampling instants are obtained at the
beginning of the process to be controlled. Also this new approach allows for statistical comparison with
other sampling schemes, which is a novel feature.|
|Appears in Collections:||CIMA - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica|
MAT - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica
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