Total uncertainty in the product life cycle - an example on coordinate measurement systems
Published 2023-10-10
abstract views: 16 // FULL TEXT ARTICLE (PDF): 14
Keywords
- geometrical product specification (GPS),
- uncertainty,
- flatness,
- coordinate measurement machine (CMM)
How to Cite
Copyright (c) 2023 Journal of Production Engineering
This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
The measurement result if expressed without confidence interval estimate it is not complete. Confidence Interval is characterized as uncertainty and is a quantitative indicator of the measurement result quality. Measurement uncertainty is mainly caused by factors such as measuring instrument, operator, workpiece, applied strategy and/or measurement conditions. GPS, a standard defining geometrical specification and product verification, integrates the entire product geometry description and defines uncertainty at each stage. The result is a total uncertainty which is usually significantly greater than measurement uncertainty (sometimes twice greater). This study provides a method for estimating total measurement uncertainty of determining flatness error using coordinate measuring machines (CMM).