for a reliability test ends with a detailed description of the mechanics
of the test and starts with stating your assumptions and what you want
to discover or prove
||Planning a reliability test
How long should you test?
How many units have to be put on test?
For repairable systems, this is often limited to 1.
If acceleration modeling is part of
the experimental plan
The answers to these questions depend on:
What combination of stresses and how many experimental cells?
How many units go in each cell?
It is not always possible, or practical, to completely answer all of these
questions for every model we might want to use. This section looks at answers,
or guidelines, for the following models:
What models are you assuming?
What decisions or conclusions do you want to make after running the test
and analyzing the data?
What risks are you willing to take of making wrong decisions or conclusions?