A new warranty policy for heterogeneous items subject to monotone degradation processes
- 주제(키워드) heterogeneous populations , mixed degradation process , optimal policy , Renewable warranty
- 등재 SCIE, SCOPUS
- 발행기관 SAGE Publications Ltd
- 발행년도 2022
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000191078
- 본문언어 영어
- Published As https://doi.org/10.1177/1748006X211028712
초록/요약
A new renewable warranty policy is suggested that increases the probability of its success and can decrease the corresponding costs for certain ranges of parameters. It deals with heterogeneous populations of items from two subpopulations (‘weak’ and ‘strong’) and is aimed at elimination and further replacement of weak items after screening at some optimal time. This elimination is performed when degradation described by the corresponding mixed degradation process reaches some optimally predetermined level. Probabilistic and cost analyses of the model are performed and the illustrative example is presented. It is shown that the proposed warranty policy with inspection outperforms the conventional one in a probabilistic sense. Furthermore, the proposed policy becomes economically beneficial especially when the additional penalty cost caused by a sudden failure is large. © IMechE 2021.
more