Teaching GAGE repeatability and reproducibility analysis of measurement systems: Choice of the best didactic cases

Abstract

The present paper explores effective teaching strategies for fundamental concepts in measurement systems analysis, with a focus on the GR&R methodology (Repeatability and Reproducibility). The study introduces an innovative approach by employing ‘extreme’ cases to illustrate the utility of GR&R. The methodology involves selecting these extreme cases to present students with diverse challenges mirroring real-world situations. Preliminary results indicate the benefits of combining easy and complex measurement systems, where the familiar multimeter-alkaline batteries combination facilitates quick comprehension of basic concepts, while the unconventional plastic rule-pencils combination poses unique challenges. Analytic Hierarchy Process (AHP) is applied for a structured quantitative comparison of the instrument/pieces combinations. The findings emphasize the importance of considering system complexity in interpreting GR&R results, highlighting the need for students to apply basic concepts to unconventional situations. Ultimately, the integration of extreme cases through AHP analysis proves to be an effective pedagogical strategy, enhancing students' applied understanding and analytical skills in measurement systems GR&R analysis.