Direct answer
Specify test systems by required measurement uncertainty and test coverage against known failure modes, and plan gauge capability studies as part of acceptance.
What this domain covers
- Field failures pass factory testing
- Test time is a line constraint
- Test results are recorded manually
- Measurement disputes with customers
- Test coverage was never mapped to failure modes
Solution approaches
End-of-line functional test
Full-product verification against specification.
In-process test stations
Early detection to avoid adding value to defective units.
Leak and pressure testing
Pressure decay, tracer gas and immersion alternatives.
Environmental and endurance rigs
Life testing and qualification outside production flow.
Engineering and project considerations
- Measurement system analysis (gauge R&R) as an acceptance criterion
- Correlation study between test outcome and field failure data
- Calibration plan and traceability to standards
- Test data structure, retention and linkage to serial numbers
- Cycle time per test and parallelisation strategy
What to prepare before engaging engineering companies
- Product specification limits and failure mode list
- Field failure data if available
- Required test cycle time and throughput
- Calibration and quality system requirements
What to measure
Frequently asked questions
Why do tested products still fail in the field?
Usually because test coverage was derived from the design intent rather than from observed failure modes.
Related engineering knowledge
Independent, buyer-side and supplier-neutral
Global B2B Group does not sell machines and does not represent equipment manufacturers. This material is published to help industrial organisations define the problem, prepare the specification and structure the investment before engineering partners are selected.