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Adapting an age-reduction model to extend the useful-life duration

Mahmood Shafiee (Institutionen för matematiska vetenskaper, matematik) ; M. J. Zuo
Proceedings of 2012 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, ICQR2MSE 2012, Chengdu, 15-18 June 2012 p. 1055-1059. (2012)
[Konferensbidrag, refereegranskat]

Most of the proposed age-reduction models was introduced and widely used in applications only for the case of monotonically increasing failure rates. However, from a practical perspective, there are several situations for which failure rates are decreasing or bathtub shaped. In these cases, the existing imperfect maintenance models may lead to the restoration of a system to the infant mortality period and can be considered as harmful. In this paper, we modify the usual assumptions on traditional age-reduction models to take into account the bathtub-shaped failure rates. Finally, we provide a numerical example to illustrate our result.

Nyckelord: age-reduction model, bathtub-shaped failure rate, imperfect maintenance, useful-life



Denna post skapades 2012-11-06. Senast ändrad 2016-05-10.
CPL Pubid: 165549

 

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Institutioner (Chalmers)

Institutionen för matematiska vetenskaper, matematik (2005-2016)

Ämnesområden

Matematik

Chalmers infrastruktur