Part A

Introduction

“Gage Repeatability and Reproducibility is commonly referred to as Gage R&R. It’s a method to assess the measurement system’s repeatability and reproducibility. In other words, Gage R&R studies are carried out to discover how much of the process variation is due to the measurement system” (Hessing and PV, 2016).

Objectives

• To measure stacks of end gauges for the measurement of repeatability.

Results

Discussion

The components of the variation graph indicate that the gauge R&R variation is the most significant, but all of the components contribute. There is no data out of control in the R (Range) Chart by Operator, showing that the operators tend to measure consistently. Operator A is the most accurate and precise starting off but dips and rises again at the end. Operator B had the most variation as seen by the fluctuating graph. Operator C was not too accurate but he was precise with his measurements. The deviation by part chart indicates that operator C is the most consistent with his measurements. In the deviation by operator graph operator A and C vary by similar amounts but their part averages vary by a big amount. Also its clear that operator C is the most consistent.

Conclusion

Based on the Gauge R&R study it was identified that operators A and B should receive additional training to reduce the variation of their measurements in the future. This variation could have been caused by lack of training opportunities or if the operator was a new hire.