Life Prediction Model Of Typical PBX Explosive Under Compound Stress Accelerated Degradation Test

During the period of storage,with the extension of time and the comprehensive effect of external environmental stress,the explosive will gradually break down.So,it will be of great importance to have study on aging properties of explosive.Accelerated degratation test is an effective method to study the storage life of explosive.By strengthening the effect of environmental factors to accelerate the aging,we can estimate the storage life in shorter period,set up the relationship between life characteristics and stress level.Most of researches only consider the effect of temperature,which is relatively simple.Because the temperature and pressure both have significant influence on the aging of the explosive,according to the data of life and failure characteristics of typical explosive under different stress conditions,we use statistical methods to analyze and set up models.There are two main parts in this paper.In the first part,the aim is to study the relationship between explosive's life and different combinations of stress.In the second part,the aim is to study the relationship between failure characteristics and time under different combinations of stress,and generalize the model to normal condition.Through the establishment of the models above,we get specific change rules of life with combined stress and failure characteristics with time,which provides preliminary basis for the formulation and selection of explosive's storage scheme.