火工品温湿度双应力加速寿命试验方法研究

Temperature and Humidity Dual Stress Accelerated Life Test Method of Pyrotechnics

目的获取火工品温湿度加速系数,建立温湿度双因素加速寿命试验方法。方法通过设计3种火工品不同温湿度加速条件下的加速寿命试验,定期取样进行性能测试,利用获取的性能数据和选定的温湿度加速模型,计算3种火工品的温湿度加速系数和湿度项反应速率常数,确定温湿度加速模型公式。结果获取了3种火工品的温湿度加速系数和湿度项模型参数,初步建立了火工品温湿度双因素加速寿命试验方法,并对下一步研究方向进行了展望。结论建立的火工品温湿度双因素加速寿命试验方法可由高温高湿加速试验时间外推常温常湿贮存时间,适用于自身密封性差或密封失效,且贮存环境湿度大的火工品的寿命预测。

The work aims to establish a temperature and humidity two-factor accelerated life test method to obtain the temperature and humidity acceleration coefficient of pyrotechnics.By designing the accelerated life test of three kinds of pyrotechnics under different temperature and humidity acceleration conditions,regular sampling for performance test,the temperature and humidity acceleration coefficient and humidity term reaction rate constant of the three fire products are calculated based on the obtained performance data and selected temperature and humidity acceleration model,and the formula of the temperature and humidity acceleration model was determined.The temperature and humidity acceleration coefficient and humidity term model parameters of three kinds of pyrotechnics were obtained,and the temperature and humidity two-factor accelerated life test method of pyrotechnics was preliminarily established,and the next research direction was prospected.The established two-factor accelerated life test method of temperature and humidity of pyrotechnics can be extrapolated from the high-temperature and high-humidity accelerated test time to the storage time of normal temperature and humidity,which is suitable for the life prediction of pyrotechnics with poor sealing or sealing failure and high storage environment humidity.