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TitleEvolution of process capability in a manufacturing process
Author(s)Sousa, Sérgio
Rodrigues, Nuno
Nunes, Eusébio P.
Keywordsbasic quality tools
capability index
measurement system analysis
process improvement
quality control
quality planning
statistical process control
Issue date1-Jan-2018
PublisherTaylor & Francis Ltd
JournalJournal of Management Analytics
Abstract(s)Before mass production of individual components industries may assess its capability to produce it according to specifications. This capability assessment is a common requirement in the automotive sector. This work shows a case study, providing an in-depth analysis, on a critical component and finds evidence of process degradation over two years of production, quantified through capability analysis. At pre-production, it was concluded that the process was capable and, thus, no statistical process control was done during its production. Over the months no defective units were detected but then its level began to increase and it was apparent that process variability had increased and the process was no longer capable. Process improvement activities were developed using known quality tools and methodologies. This work shows how the control plan initially defined became obsolete and discusses the need to periodically review quality control mechanisms.
AccessRestricted access (UMinho)
Appears in Collections:CAlg - Artigos em revistas internacionais/Papers in international journals

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