Design and evaluation of fatigue tests
For commercial vehicles reliability demonstration is required for a large number of vehicle variants. Classical Success Run designs claim a certain number of specimens to survive a multiple of the actual design life. Small sample sizes increase the probability that even populations of good quality will not pass the test. Reacting to that with additional tests will now increase the probability that samples from poor populations pass the test.
We quantify this risks and assist in selecting suitable strategies:
- Adding few components with same testing time?
- More components with shorter testing time?
- Reactivate suspended components?
The results are more efficient designed testing plans and savings in terms of specimens to be tested.