The effect of inspection error on quality and producer losses: the case of nominal-the-best type quality characteristic and rework

Koksal G., Taseli A., Dolgun L. E., Batmaz İ.

EUROPEAN JOURNAL OF INDUSTRIAL ENGINEERING, vol.7, pp.497-528, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 7
  • Publication Date: 2013
  • Doi Number: 10.1504/ejie.2013.055021
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.497-528
  • Keywords: measurement system capability, gage capability, process capability, inspection error, IE, manufacturing, rework, nominal-the-best, quality loss, producer loss, PROCESS CAPABILITY INDEXES
  • Middle East Technical University Affiliated: Yes


In this study, the effect of inspection error (IE) on quality and producer losses is investigated for a nominal-the-best type quality characteristic determined by a manufacturing process centre with a separate rework unit. The probability distribution and the first two moments of the resulting quality characteristic values are derived and used together with Markov chain models and simulation to study the quality and producer losses and the related statistics for various processes and gage capability levels. The results of this study confirm with strong theoretical and empirical evidence that an effective way of achieving robustness to IE is to improve the process capability. This study provides benchmarks that support understanding and decision making of quality professionals.