6 . Measurement & validation
You cannot control what you cannot accurately measure. If a production test fixture or a primary calibration standard is even slightly compromised, all resulting pass/fail data becomes meaningless, inevitably leading to the shipment of defective goods to our customers.
This chapter explicitly mandates the rigid engineering protocols we use for equipment calibration, Gauge Repeatability and Reproducibility (GR&R), and overall metrology validation. By statistically proving that our specific measurement systems are both accurate and precise, we guarantee the integrity and reliability of our final inspection results across all facilities.
- 6.1 Measurement system analysis: gauge R&R
Before any production data can be trusted, the physical tool that generated it must be trusted. If the metaphorical ruler is made of elastic, every single measurement it produces is a lie. **Measureme...
- 6.2 Calibration management
Measurement without rigorous calibration is just an unsubstantiated engineering opinion. In a high-precision manufacturing environment, an uncalibrated gauge is effectively a mechanical liar that inev...
- 6.3 Equipment validation: IQ/OQ/PQ
Verification (inspecting the final product) only indicates if a mistake was **made**; Validation (rigorously qualifying the machine process) ensures a mistake **cannot** be made in the first place. In...
- 6.4 Inspection method validation: AOI, X-ray, ICT, FCT correlation
Inspection is definitely not a passive safety net; it is a highly active, quantifiable data acquisition system that defines the reality of the PCBA. Relying blindly on unvalidated inspection machines...