Abstract #302125

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JSM 2003 Abstract #302125
Activity Number: 169
Type: Contributed
Date/Time: Monday, August 4, 2003 : 2:00 PM to 3:50 PM
Sponsor: Section on Quality & Productivity
Abstract - #302125
Title: Burn-in and Maintenance Policy for a Generalized Failure Model
Author(s): Myung Hwan Na*+
Companies: Chonnam National University
Address: Dept. of Statistics, 500-757 Gwang-Ju, , , S KOREA
Keywords: burn-in ; maintenance policy ; general failure model ; bathtub-shaped failure rate
Abstract:

To determine optimal burn-in and maintenance policy, a general failure model is applied. In the general failure model there are two types of failures. One is Type I (minor failure) which can be removed by a minimal repair and the other is Type II failure (catastrophic failure) which can be removed only by a complete repair. Only minimal repair is done for the Type I failure and a complete repair is performed for the Type II failure during a burn-in process. In field operation, the component is replaced by a new burned-in component at the field use age T or at the time of the first Type II failure, whichever occurs first. In this talk a new burn-in procedure is proposed. This procedure is a modified version of Cha's (2001) model and the cost function is different with that of Cha's model. Under this model, the optimal burn-in time is obtained in an explicit form and it is shown that the optimal replacement policy exists, but may be infinite.

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