表題番号：2017K-337
日付：2018/04/09
研究課題Delayed reporting of faults in warranty claims
| 研究者所属（当時） | 資格 | 氏名 | |
|---|---|---|---|
| （代表者） | 国際学術院 国際教養学部 | 教授 | 早川 有 |
| （連携研究者） | Victoria University of Wellington | Associate Professor | Richard Arnold |
| （連携研究者） | Victoria University of Wellington | Reader | Stefanka Chukova |
- 研究成果概要
- When a complex system is operated, it may experience multiple faults. If the system is operating under warranty these faults may be claimed for and repaired at zero or minimal cost to the consumer. However, if the faults do not lead to system failure the user may find it inconvenient to claim for each repair as it occurs and may instead delay making a report or claim until a sufficiently large number of faults has accumulated. We present a model for the delayed reporting of faults: multiple non-fatal faults are accumulated and then simultaneously reported and repaired. The reporting process is modelled as a stochastic process dependent on the underlying stochastic process generating the faults. The joint distribution of the reporting times and numbers of reported faults is derived.
We presented a paper on the project in the 10th International Conference on Mathematical Methods in Reliability held in France on 3-6 July 2017. We also worked on a few extensions of the above model, which deal with multiple fault types, planned preventative maintenance and customer rush and wrote a manuscript on the results. We have written a manuscript on the above results and plan to extend it by adding simulation results. An extended version of the manuscript will be submitted to an international peer review journal later this year.