Statistical Papers

, Volume 46, Issue 4, pp 509–522 | Cite as

A note on replacement policy comparisons from NBUC lifetime of the unit

  • Félix Belzunce
  • Eva-María Ortega
  • José M. Ruiz


Age and block replacement policies are commonly used in order to reduce the number of in-service failures when the systems are functioning indefinitely. In reliability theory, the lifetime of a system can be modeled by means of the NBUC aging class that is characterized throughout comparisons of the residual lives in the sense of the icx order. The purpose of this paper is to establish stochastic comparisons between the age (block) replacement policy and a renewal process with no planned replacements when the lifetime of the unit is NBUC.

AMS Subject Classification

60K15 60K10 

Key words and phrases

icx order NBUC aging class renewal processes age and block replacement policies 


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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Félix Belzunce
    • 1
  • Eva-María Ortega
    • 2
  • José M. Ruiz
    • 1
  1. 1.Dpto. Estadística e Investigación OperativaUniversidad de Murcia, Campus de EspinardoEspinardo (Murcia)Spain
  2. 2.Dpto. Estadística y Matemática Aplicada, Centro de Investigación OperativaUniversidad Miguel HernándezOrihuela (Alicante)Spain

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