Multi-level Materials Service Safety Assessment System

With a number of major projects put into operation, such as high-speed train, marine platforms and new energy equipment, the service security issues for these projects have got more and more community-wide concern and become a hot topic in the recent study. Such systems' features are divided into more levels, the imbalance of existing data, and the longer service time. To resolve such service security issues, a variety of new methods such as multi-level modeling, data transfer between levels, and data balance method, must be introduced in the traditional reliability methods. In this paper, a multi-level materials service safety assessment system has been proposed, and a data processing method and the data transfer rules between levels have also been proposed based on Bayesian inference method and hybrid testing. The research result can be widely used in aerospace, high-speed train, new energy equipment and other fields needing service safety assessment.