Optimal replacement policy for a cumulative damage model with time deterioration

  • Authors:
  • T Satow;K Teramoto;T Nakagawa

  • Affiliations:
  • Department of Industrial Engineering, Aichi Institute of Technology Toyota 470-0392, Japan;Department of Industrial Engineering, Aichi Institute of Technology Toyota 470-0392, Japan;Department of Industrial Engineering, Aichi Institute of Technology Toyota 470-0392, Japan

  • Venue:
  • Mathematical and Computer Modelling: An International Journal
  • Year:
  • 2000

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Abstract

This paper considers a replacement policy for a cumulative damage model. A unit suffers two kinds of damage which occurs either by shocks or increases with time. It fails only when the total amount of damage exceeds a failure level K. For the purpose of preventing failure, the damage is checked when each shock occurs and a unit is replaced before failure when the total damage exceeds a threshold level k. The expected cost rate is obtained, and an optimal level k^* which minimizes it is derived, when shocks occur in a Poisson process. Numerical examples are finally given.