多应力下电子引信薄弱部件加速寿命模型研究  

Accelerated Life Model of Weak Components of Electronic Fuze under Multiple Stresses

作　　者：罗文新 岳明凯[1] 张骢 张成 史瑞 LUO Wenxin;YUE Mingkai;ZHANG Cong;ZHANG Cheng;SHI Rui(School of Equipment Engineering,Shenyang Polytechnic University,Shenyang 110159,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]沈阳理工大学装备工程学院,沈阳110159 [2]北京理工大学机电学院,北京100081

出　　处：《装备环境工程》2024年第12期28-33,共6页Equipment Environmental Engineering

摘　　要：目的给出海岛环境下某电子时间引信的寿命分布规律,研究引信的薄弱部件位置和引信寿命的影响因素。方法通过引信的工作原理,初步筛选出引信的薄弱部件,分析海岛环境下影响引信贮存可靠性的环境因素,根据引信的敏感环境应力,设计相应的加速试验,来验证引信的薄弱部件位置。提出一种将腐蚀动力学模型和Peck模型结合的多应力加速模型,通过加速试验结果,估计出模型未知参数,得到引信的寿命分布规律。最后通过加速模型,预测实际海岛贮存环境下的引信寿命。结果根据恒温、湿热、盐雾加速试验的加速结果,得到电子时间引信的薄弱部件为电路中的电子开关器件和时间装定环,引信的寿命分布规律服从威布尔分布函数。通过将腐蚀动力学和湿热加速模型相结合的加速模型,多应力加速模型预测得到海岛环境下的引信贮存寿命为10.13 a,更符合实际情况,预测精度为1.4%。结论多应力加速试验更符合引信的实际贮存环境,基于湿热应力和盐雾应力的加速模型能准确预测海岛环境多应力影响下引信的贮存寿命。The work aims to present the life distribution law of an electronic time fuze under the sea island environment and study the location of the weak components of the fuze and the factors affecting the life of the fuze.The weak components of the fuze were initially screened out through the working principle of the fuze,and the environmental factors affecting the reliability of the fuze storage in the sea island environment were analyzed.An accelerated test was designed according to the sensitive environmental stress of the fuze to verify the location of the weak components.A multi-stress accelerated model combining corrosion kinetics model and Peck model was proposed,and the unknown parameters of the model were estimated by the accelerated test results,thereby obtaining the life distribution law of the fuze.Finally,the life of the fuze in the sea island storage environment was predicted by the accelerated model.The constant temperature,humidity and salt spray accelerated test results were used to accelerate the results,and the weak components of the fuze were identified as the electronic switching devices in the cir第circuit and the time setting ring.The life distribution law of the fuze obeyed the Weibull distribution function.The accelerated model combining the corrosion kinetics and humidity accelerated model could predict the storage life of the fuse in the sea island environment to be 10.13 a with a prediction accuracy of 1.3%.The multi-stress acceleration test is more consistent with the actual storage environment of the fuze,and the acceleration model based on wet thermal stress and salt spray stress can accurately predict the storage life of the fuze under the impact of multiple stresses in island environment.

关 键 词：引信 加速寿命模型 薄弱部件 寿命预测 多应力 海岛环境 

分 类 号：TJ430.6[兵器科学与技术—火炮、自动武器与弹药工程]