8.7.5 Accelerated Test Models
Accelerated test models relate the failure rate or the life of a
component to a given stress such that measurements taken during accelerated
testing can then be related back to the expected performance under normal
operating conditions. The implicit working assumption here is that the stress
will not change the shape of the failure distribution.
Three of the most commonly used acceleration models are:

Inverse Power Law

Arrhenius Acceleration Model

Miner’s
Rule
These are not the only models that
exist, there are other models as well. The most important factor of concern is
the correct choice of the model. The model chosen must be one that
accurately models the reliability or life
under the accelerated conditions to reliability or life under normal operating
conditions. Great care is essential in choosing the most appropriate model and
in selecting the appropriate range of validity for the chosen model in a
specific application. Documenting the rationale for these choices is
important.