Test Design
Design of Experiments
Structure experiments to separate the effects of design, material and process factors.
Purpose & Benefit
When This Activity Helps
Use when several variables may influence performance or failure and test resources are limited. Planned experiments support stronger conclusions than changing one factor without controlling the others.
Project Information
Typical Inputs
The scope is tailored to the available evidence. Useful inputs include:
- Engineering question and response measures
- Factors, ranges and practical constraints
- Expected variation and measurement capability
Engineering Approach
How SPACEREL Supports Your Project
SPACEREL develops an experimental design with suitable replication, randomisation and control of nuisance variation. Results are analysed for effects and interactions, with follow-up work defined where the evidence remains uncertain.
Documented Outcomes
Typical Deliverables
Deliverables are agreed before work starts and can include:
- Experimental design and execution plan
- Statistical interpretation of factor effects
- Recommendations for confirmation and optimisation
Methods & Evidence
Selected References
- NIST/SEMATECH: Assessing Product Reliability
Reliability distributions, life-data analysis and test-planning guidance.
Project Context
Where This Activity Can Help
Explore the relevant lifecycle stages.