Open Access
November 2006 A Review of Accelerated Test Models
Luis A. Escobar, William Q. Meeker
Statist. Sci. 21(4): 552-577 (November 2006). DOI: 10.1214/088342306000000321


Engineers in the manufacturing industries have used accelerated test (AT) experiments for many decades. The purpose of AT experiments is to acquire reliability information quickly. Test units of a material, component, subsystem or entire systems are subjected to higher-than-usual levels of one or more accelerating variables such as temperature or stress. Then the AT results are used to predict life of the units at use conditions. The extrapolation is typically justified (correctly or incorrectly) on the basis of physically motivated models or a combination of empirical model fitting with a sufficient amount of previous experience in testing similar units. The need to extrapolate in both time and the accelerating variables generally necessitates the use of fully parametric models. Statisticians have made important contributions in the development of appropriate stochastic models for AT data [typically a distribution for the response and regression relationships between the parameters of this distribution and the accelerating variable(s)], statistical methods for AT planning (choice of accelerating variable levels and allocation of available test units to those levels) and methods of estimation of suitable reliability metrics. This paper provides a review of many of the AT models that have been used successfully in this area.


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Luis A. Escobar. William Q. Meeker. "A Review of Accelerated Test Models." Statist. Sci. 21 (4) 552 - 577, November 2006.


Published: November 2006
First available in Project Euclid: 23 April 2007

zbMATH: 1129.62090
MathSciNet: MR2380715
Digital Object Identifier: 10.1214/088342306000000321

Keywords: acceleration factor , Arrhenius relationship , degradation data , extrapolation , Eyring relationship , inverse power relationship , lifetime data , photodegradation , regression model , reliability , voltage-stress acceleration

Rights: Copyright © 2006 Institute of Mathematical Statistics

Vol.21 • No. 4 • November 2006
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