On analysing warranty data from repairable items

Sarah Marshall, Stefanka Chukova

Research output: Contribution to journalArticle

11 Citations (Scopus)


Fitting models to failure data is an important topic in reliability. The resulting models can be useful both for manufacturers as well as for end-users. In this paper we provide details of some methods from the literature which can be used as a starting point when analysing and fitting models to failure data from repairable items. In particular we focus on obtaining analytical estimates of the intensity of a non-homogeneous Poisson process. We illustrate some of these methods on failure data from the warranty database of a major car manufacturer.
Original languageEnglish
Pages (from-to)43–52
Number of pages10
JournalQuality and Reliability Engineering International
Issue number1
Early online date26 Jun 2009
Publication statusPublished - Feb 2010


  • warranty data
  • non-homogeneous Poisson process
  • intensity function

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