
85
chapter ve
The fundamental solution
for reliability assurance:
Parametric ALT
Our task is to reestablish reliability quantitative test specications after
conducting reliability marginal tests. As we said before, reliability
test specications should be designed concretely in order to establish
quantitative denitions of the lifetime and annual failure rate within
lifetime. Quantitative indices of item reliability should meet the tar-
gets established with reference to the quality of competitive items that
customers recognize in the market. Parametric accelerated life testing
(ALT) is the methodology for verifying whet ...