共查询到19条相似文献,搜索用时 938 毫秒
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本文介绍了两次大爆破中对起爆网络所进行的雷管延时间测试和1:1试验,说明对起爆网络进行了可靠性试验的重要性,并总结出有益的经验。 相似文献
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作者选择液化石油气加氧气为气相起爆系统新型气源,经原理探索后研制成第一轮相起爆器。在对新型混合气源在长管道中的传爆性能研究基础上,对气相起爆网络作了系统实验研究。 相似文献
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运用可靠性理论和统计分析方法,对支撑拆除爆破中2种常用的捆串联起爆网路:导爆管雷管捆串联起爆网路和导爆管反射四通捆串联起爆网路的可靠性进行了计算和分析。随着结点阶数的增加,导爆管雷管捆串联单式加强起爆网路的可靠度不断降低,但导爆管雷管反射四通捆串联复式交叉起爆网路的可靠度降至0.9522以后,不再降低,而是保持不变。在工程实践中进行了3次实验,实验结果表明:雷管拒爆或捆绑雷管脚线被炸断,可能会导致导爆管雷管捆串联起爆网路传爆中断,但不会影响导爆管反射四通捆串联起爆网路的传爆。 相似文献
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Shuai Lin Yanhui Wang Limin Jia Hengrun Zhang 《Quality and Reliability Engineering International》2018,34(5):772-790
The network theory is widely applied to improve the reliability of a complex electromechanical system. In this application, system reliability assessment with network theory has been paid a great deal of attention. Because of instrument malfunctions, staff omissions, imperfect inspection strategies, and complex structures, field failure data are often subject to interval censoring, making the holistic reliability assessment becomes a difficult task. Most traditional methods assume reliability of critical components or partial reliability as system reliability, which may cause a large bias in system reliability estimation. This paper proposes a novel method to evaluate and predict the system reliability of a complex electromechanical system subject to the insufficient fault data problem from a network perspective. First, the system modeling based on network theory is developed to describe the topology of a holistic system. Second, interval‐valued intuitionistic hesitant fuzzy number is proposed in order to solve insufficient data for single component. Then, a new measure—comprehensive reliability—that can reflect the reliability of nodes in combination with functional properties and topological properties, which are formulated by failure data and network model, respectively, is constructed for system reliability assessment. Subsequently, an improved system reliability model based on percolation theory is given in terms of comprehensive reliability of nodes. Finally, to verify the effectiveness of the proposed method, a simulation and a real case study for traction system are implemented. 相似文献
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在网络连通可靠度分析的递推分解算法(Recursive Decomposition Algorithm,简称RDA)的基础上,先整合原RDA算法中分别用于不同网络赋权形式的三部分程序,发展出统一RDA算法。应用顺序复合法(Sequential Compounding Method,简称SCM)和Gumbel Copula函数分别计算RDA算法中不交最小路和不交最小割事件的联合失效概率,解决元件相依失效生命线工程系统的抗震可靠度估计问题,最终发展出相依失效生命线工程系统抗震可靠度估计的统一RDA算法。36节点格栅型网络可靠度案例计算结果表明:此方法可以用于相依失效网络系统的动力抗震可靠度估计,计算精度较高。 相似文献