In this study, we try to investigate whether copula models contribute to the good reliability estimation for multi-component systems in some dependent environment. We assume that a failure occurs on the one component of multi-components, and the surviving component’s hazard rate switches to the worse. Specifically, we consider the 2-component parallel system and the 5-component network system. Also we presume that we can obtain the complete data sets consist of failure occurrence time of each com-ponent. We estimate reliability function by the copula models and the traditional methods based on computer simulation, and compare these performances.

112 理工学部・理工学研究科 ＞ 学位論文 ＞ 修士論文