基于储存应力折算的火工品恒加试验数据处理方法

在火工品储存可靠性评估中,针对恒加试验一般数据处理方法忽略火工品并非新品的问题,提出了基于储存应力折算的数据处理方法。通过等效和叠加,将储存应力下的储存时间折算为恒加试验各应力水平下的试验时间,并以此进行参数的极大似然估计。实例分析表明,该方法在评估储存应力和储存时间已知的火工品储存可靠性时,具有更高的准确性。

Data Processing Method Based on Equivalent Storage Stress for Constant Stress Accelerated Life Test of Initiating Explosive Device

In reliability assessment of initiating explosive device storage, aimed at the problem of general data processing method of constant stress accelerated life test, which ignore the initiating explosive device is not new, the data processing method based on equivalent storage stress was put forward. The methods convert the storage time to test time under each stress of constant stress accelerated life test by equivalent and superposition. Then, the maximum likelihood estimation of parameters were estimated according to the final test time. An analysis and comparison shows that, this method has higher accuracy to estimate storage reliability of initiating explosive device, which has been stored under certain stress and time.