Analysis of Two-dimensional Gage Repeatability and Reproducibility

ABSTRACT

Recent statistical work is applied to measuring imbalance in a single plane, often referred to as static imbalance, for a rigid rotor. The two-dimensional repeatability and reproducibility of imbalance measurement are estimated by circles constructed from MANOVA-based method-of-moments and the results are compared to those of one-dimensional repeatability and reproducibility using the same measurement data. The results of both the one-dimensional and the two-dimensional repeatability and reproducibility are interpreted in terms of capability or how the measurement variation relates to rotor imbalance specification or tolerance.

KEYWORDS:

• gage capability
• repeatability
• reproducibility
• rsotating imbalance
• two-dimensional data

ACKNOWLEDGMENT

Appreciation is expressed to Joseph G. Voelkel, Ph.D., Associate Professor and Graduate Program Chair in the Graduate Statistics Department at The John D. Hromi Center for Quality and Applied Statistics at Rochester Institute of Technology for guidance and assistance in implementing this capability study procedure.