基于序约束的火工品可靠性试验数据分析

为了能在较小样本量下提高火工品可靠性试验数据分析效果,研究了Langlie法试验,给出了火工品可靠性试验数据分析方法。该方法利用保序回归对Langlie法试验数据进行处理,给出参数的序约束估计。模拟结果表明基于序约束的Langlie试验数据的位置参数估计具有较优的统计性质。最后利用该方法对某针刺雷管进行可靠性评估,并与大样本方法比较,表明该方法可以利用65个样本在置信水平为0.9时对可靠性为0.999的火工品进行评估。

Order Restricted Analysis of Reliability Tests for Explosive Initiator

A new analysis method of reliability tests for explosive initiator was proposed to improve the analysis of reliability tests for explosive initiator with small sample size.The reliability data were collected by Langlie test,and then were processed to be order restricted with the isotonic regression.The new parameters estimates were obtained from the order restricted data.The simulation was used to compare the efficiency of the new estimates with the traditional estimates,and the result shows that the new estimate of location parameter is better.The present method was used to assess the high reliability of one initiating device with small sample size.And the feasibility and applicability are validated,compared with the run-down method.