Practical Issues in Component Aging Analysis

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This paper examines practical issues in the statistical analysis of component aging data. These issues center on the stochastic process chosen to model component failures. The two stochastic processes examined are repair same as new, leading to a renewal process, and repair same as old, leading to a nonhomogeneous Poisson process. Under the first assumption, times between failures can treated as statistically independent observations from a stationary process. The common distribution of the times between failures is called the renewal distribution. Under the second process, the times between failures will not be independently and identically distributed, and one cannot simply ... continued below

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Kelly, Dana L.; Rodionov, Andrei & Uwe-Klugel, Jens September 1, 2008.

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This paper examines practical issues in the statistical analysis of component aging data. These issues center on the stochastic process chosen to model component failures. The two stochastic processes examined are repair same as new, leading to a renewal process, and repair same as old, leading to a nonhomogeneous Poisson process. Under the first assumption, times between failures can treated as statistically independent observations from a stationary process. The common distribution of the times between failures is called the renewal distribution. Under the second process, the times between failures will not be independently and identically distributed, and one cannot simply fit a renewal distribution to the cumulative failure times or the times between failures. The paper illustrates how the assumption made regarding the repair process is crucial to the analysis. Besides the choice of stochastic process, other issues that are discussed include qualitative graphical analysis and simple nonparametric hypothesis tests to help judge which process appears more appropriate. Numerical examples are presented to illustrate the issues discussed in the paper.

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  • ANS PSA 2008 Topical Meeting,Knoxville, Tennessee,09/07/2008,09/11/2008

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  • Report No.: INL/CON-08-14536
  • Grant Number: DE-AC07-99ID-13727
  • Office of Scientific & Technical Information Report Number: 940034
  • Archival Resource Key: ark:/67531/metadc894003

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  • September 1, 2008

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 7, 2016, 6:56 p.m.

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Kelly, Dana L.; Rodionov, Andrei & Uwe-Klugel, Jens. Practical Issues in Component Aging Analysis, article, September 1, 2008; [Idaho Falls, Idaho]. (https://digital.library.unt.edu/ark:/67531/metadc894003/: accessed May 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.