Papers by Author: Li Yang Xie

Abstract: The unavailability equations of several aging scenarios of standby safety component are derived and the risk of standby safety system is quantified. The different maintenance strategies are adopted for no aging scenario and several aging scenarios respectively. The two kind of test and maintenance (T&M) policies are adopted for no aging scenario and several aging scenarios. A numerical example is introduced for the illustration. The system unavailabilities under different configurations of parallel safety system and T&M policies are computed and compared. It can be derived that the combination of different T&M policies and configurations is significant effect on the risk of standby safety system and optimal STI and T&M interval.

Abstract: Gears are widely used in many engineering fields such as mining machinery, aerospace, transportation and petrochemical and are common and important parts for engineering, but for some gears it is still tedious to build the 3D models and assess their reliability. It is important for a gear to do reliability assessment, especially for some gear that under complex load conditions. In order to improve the reliability and stabilization, a gear assessment method is introduced and an example is given, and the example shows that do reliability assessment is useful and effective.