ALTopt: An R package for optimal experimental design of accelerated life testing

Kangwon Seo, Rong Pan

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


The R package ALTopt has been developed with the aim of creating and evaluating optimal experimental designs of censored accelerated life tests (ALTs). This package takes the generalized linear model approach to ALT planning, because this approach can easily handle censoring plans and derive information matrices for evaluating designs. Three types of optimality criteria are considered: D-optimality for model parameter estimation, U-optimality for reliability prediction at a single use condition, and I-optimality for reliability prediction over a region of use conditions. The Weibull distribution is assumed for failure time data and more than one stress factor can be specified in the package. Several graphical evaluation tools are also provided for the comparison of different ALT test plans.

Original languageEnglish (US)
Pages (from-to)177-188
Number of pages12
JournalR Journal
Issue number2
StatePublished - 2015

ASJC Scopus subject areas

  • Statistics and Probability
  • Numerical Analysis
  • Statistics, Probability and Uncertainty


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