Test Strategy
Accelerated Degradation Testing
Use measurable performance change to investigate lifetime before complete failure occurs.
Purpose & Benefit
When This Activity Helps
Use when a meaningful degradation indicator can be measured and linked to a failure threshold. It can provide useful evidence when few complete failures are expected within the test period.
Project Information
Typical Inputs
The scope is tailored to the available evidence. Useful inputs include:
- Performance metric and justified failure threshold
- Repeated measurements and stress conditions
- Relevant mechanism and measurement uncertainty
Engineering Approach
How SPACEREL Supports Your Project
SPACEREL defines measurements and stress levels, reviews the relationship between degradation and failure, and selects an appropriate analysis. Threshold crossing and service-life estimates are reported with model limitations and uncertainty.
Documented Outcomes
Typical Deliverables
Deliverables are agreed before work starts and can include:
- Degradation test and measurement plan
- Degradation model and threshold assessment
- Lifetime estimates with stated limitations
Reliability Toolkit
Related Calculators
Explore equivalent exposure for a supported thermal or combined-stress mechanism. Degradation-curve fitting and threshold analysis are separate activities.
Arrhenius Acceleration Factor
Calculate Arrhenius thermal acceleration factor and equivalent use time from activation energy, use temperature and stress temperature.
Open CalculatorEyring Acceleration Factor
Calculate thermal Eyring acceleration and equivalent use time with a configurable temperature prefactor.
Open CalculatorTemperature-Humidity Acceleration Factor
Calculate combined temperature and humidity acceleration with reciprocal-humidity or Peck models.
Open CalculatorTemperature-Nonthermal Acceleration Factor
Calculate combined Arrhenius and inverse power acceleration for temperature and a nonthermal stress.
Open CalculatorMethods & 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.