
Measurement, MSA, and SPC
Gauge R&RMSA
Gauge R&R Acceptance Criteria: %GRR, NDC, and What AIAG MSA Requires
The AIAG MSA 4th Edition sets specific thresholds for Gauge R&R studies. This guide explains what %GRR and NDC mean, which values trigger rejection, how to interpret your results, and what to do when your measurement system does not pass.
April 15, 202610 min read

Measurement, MSA, and SPC
Process CapabilityPPAP
Cpk vs Ppk: Which Process Capability Index to Use for PPAP
Cpk and Ppk measure process capability differently and are not interchangeable on a PPAP submission. Here is what each one measures, which sigma each uses, and what PPAP Element 11 actually requires.
April 12, 20269 min read