Measurement Process Evaluation
The SPC experiences of many of the world's largest companies have led them
to specify control over measurement processes as the crucial first step to be
achieved before proceeding with full SPC implementation. Measurement
Process Evaluation (MPE) provides Engineers and Scientists with a powerful
range of graphic-rich tools to enable special cause variation to be identified
and eliminated from your measurement processes. The MPE techniques
described in the book "Evaluating The Measurement Process" by Donald
J. Wheeler and Richard W. Lyday (ISBN 0-945320-06-X) are much easier
to understand and apply than traditional R&R (Reproducibility and
Repeatability) studies. For a summary of the key differences between MPE
and traditional R&R, click here. To
download our whitepaper describing MPE, click here.
In
"Evaluating The Measurement Process" by Donald J. Wheeler and Richard
W. Lyday the following aspects of the measurement process are discussed
-
Adequate
measuring units
-
Bias
-
Inconsistency
-
Discrimination
Only
when these aspects of your measurement process are in order can it be used for
SPC implementation. Not checking this inevitably results in unnecessary
adjustments to your manufacturing process resulting in lower quality and
increased costs.
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