A unified approach to uncertainty for quality improvement

J. E. Muelaner, M. Chappell, P. S. Keogh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

To improve quality, process outputs must be measured. A measurement with no statement of its uncertainty gives no meaningful information. The Guide to the expression of Uncertainty in Measurement (GUM) aims to be a universal framework for uncertainty. However, to date, industry lacks such a common approach. A calibration certificate may state an Uncertainty or a Maximum Permissible Error. A gauge study gives the repeatability and reproducibility. Machines have an accuracy. Processes control aims to remove special cause variation and to monitor common cause variation. There are different names for comparable metrics and different methods to evaluate them. This leads to confusion. Small companies do not necessarily have experts able to implement all methods. This paper considers why multiple methods are currently used. It then gives a common language and approach for the use of uncertainty in all areas of manufacturing quality.

Original languageEnglish
Title of host publicationLaser Metrology and Machine Performance XII - 12th International Conference and Exhibition on Laser Metrology, Machine Tool, CMM and Robotic Performance, LAMDAMAP 2017
PublisherEUSPEN
Pages164-174
Number of pages11
ISBN (Electronic)9780956679093
Publication statusPublished - Jan 2017
Event12th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance, LAMDAMAP 2017 - Wotton-under-Edge, UK United Kingdom
Duration: 15 Mar 201716 Mar 2017

Conference

Conference12th International Conference and Exhibition on Laser Metrology, Coordinate Measuring Machine and Machine Tool Performance, LAMDAMAP 2017
CountryUK United Kingdom
CityWotton-under-Edge
Period15/03/1716/03/17

ASJC Scopus subject areas

  • Engineering(all)
  • Atomic and Molecular Physics, and Optics

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