Distributions Used in Accelerated Testing

In this chapter, we will briefly present three lifetime distributions commonly used in accelerated life test analysis: the exponential, the Weibull and the lognormal distributions. Note that although all forms are mentioned below, ALTA uses the 1-parameter form of the exponential distribution and the 2-parameter form of the Weibull distribution.

Readers who are interested in a more rigorous overview of these distributions (or for information about other life distributions) can refer to ReliaSoft's Life Data Analysis Reference. For information about the parameter estimation methods, see Appendix B.

=The Exponential Distribution=

Characteristics of the Exponential Distribution
= The Weibull Distribution =

Characteristics of the Weibull Distribution
= The Lognormal Distribution =