Test Strategy
Accelerated Life Testing
Develop accelerated tests linked to relevant failure mechanisms and use conditions.
Purpose & Benefit
When This Activity Helps
Use where direct testing at service conditions would take too long. Mechanism-led acceleration can support earlier decisions about design, materials and expected life.
Project Information
Typical Inputs
The scope is tailored to the available evidence. Useful inputs include:
- Mission profile and expected failure mechanisms
- Model parameters and previous test evidence
- Sample quantities and permitted stress limits
Engineering Approach
How SPACEREL Supports Your Project
SPACEREL selects stress levels and an analysis approach appropriate to the mechanism. Plans account for censoring, monitoring and competing failures. Extrapolation to service conditions is justified explicitly, with checks for mechanism changes at excessive stress.
Documented Outcomes
Typical Deliverables
Deliverables are agreed before work starts and can include:
- Accelerated life test strategy and plan
- Acceleration model and parameter assumptions
- Life-data interpretation and engineering conclusions
Reliability Toolkit
Related Calculators
Compare acceleration models that match your failure mechanism, then evaluate a supplied Weibull life model.
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 CalculatorInverse Power Law Acceleration Factor
Calculate inverse-power-law acceleration factor and equivalent exposure from use stress, accelerated stress and exponent n.
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 CalculatorCoffin-Manson Thermal Cycling Acceleration Factor
Estimate simplified thermal-cycle acceleration from use and test temperature ranges and a Coffin–Manson fatigue exponent.
Open CalculatorWeibull Reliability & B-Life
Calculate Weibull reliability at time and B-life percentile from beta and characteristic life eta.
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.