A side-sensitive synthetic chart combined with a VSS X¯ chart

• Autor(a) principal: Costa, Antonio F.B. [UNESP]
• Data de Publicação: 2016
• Outros Autores: Machado, Marcela A.G. [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.cie.2015.10.011; http://hdl.handle.net/11449/168193
• topic: Quality control; Side-sensitive; Synthetic; VSS; X¯ chart

In independent investigations, the variable sample size (VSS) scheme and the side-sensitive synthetic (SS) rule proved to reduce the delay with which the X¯ chart signals. Based on these findings we investigate the X¯ chart's performance with the joint use of the VSS scheme and the side-sensitive synthetic rule. The SSVSS X¯ chart outperforms the pure VSS X¯ chart, especially when the risk of false alarms and the rate of inspected items per sampling cannot be high. In these cases, the VSS X¯ chart detects moderate mean shifts (around one standard deviation) in half of the time thanks to the side-sensitive synthetic rule.