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Statistical Analysis of Degradation Data for Random Coefficient Satisfied Multivariate Normal Distribution

In this paper, the concept of the degradation modeling and its development status is introduced first. Then the relationship between the degradation model and the distribution of failure time is given. Third the related research of the degradation modeling is elaborated from two situations of no stress factors and stress factors. Finally it analyzes the hot issues in the field of degradation modeling briefly, and looks forward to the next study.