超细粒子对环氧树脂的增韧改性研究

用NW-2辛酯偶联剂改性过的复合氧化锌(ZnO)超细粒子对环氧树脂进行增韧,借助于SEM和力学性能测试手段研究了ZnO粒子的形貌以及NW-2辛酯偶联剂改性复合ZnO粒子在环氧树脂体系中的增韧情况及其机理.结果表明:经过NW-2辛酯偶联剂改性的复合超细ZnO粒子对环氧树脂具备良好的增韧效果.     

不确定环境下装备采购项目组织结构评估研究

首先分析了装备采购项目组织结构柔性的概念、环境不确定性的主客观因素及组织结构柔性与环境不确定性匹配的涵义;其次提出了装备采购项目组织结构柔性与环境不确定性的评价指标体系和测度方法,并在此基础上设计了组织结构柔性与环境不确定性匹配度的计算方法及判断准则;最后给出了算例。     

Gas metal arc welding of high nitrogen stainless steel with Ar-N2-O2 ternary shielding gas

High nitrogen stainless steel with nitrogen content of 0.75％was welded by gas metal arc welding with Ar—N2-O2 ternary shielding gas. The effect of the ternary shielding gas on the retention and improvement of nitrogen content in the weld was identified. Surfacing test was conducted first to compare the ability of O2 and CO2 in prompting nitrogen dissolution. The nitrogen content of the surfacing metal with O2 is slightly higher than CO2. And then Ar—N2-O2 shielding gas was applied to weld high nitrogen stainless steel. After using N2-containing shielding gas, the nitrogen content of the weld was improved by 0.1 wt％. As N2 continued to increase, the increment of nitrogen content was not obvious, but the ferrite decreased from the top to the bottom. When the proportion of N2 reached 20％, a full austenitic weld was obtained and the tensile strength was improved by 8.7％. Combined with the results of surfacing test and welding test, it is concluded that the main effect of N2 is to inhibit the escape of nitrogen and suppress the ni-trogen diffusion from bottom to the top in the molten pool.     

Automated integration of real-time and non-real-time defense systems

Various application domains require the integration of distributed real-time or near-real-time systems with non-real-time systems.Smart cities,smart homes,ambient intelligent systems,or network-centric defense systems are among these application domains.Data Distribution Service(DDS)is a communi-cation mechanism based on Data-Centric Publish-Subscribe(DCPS)model.It is used for distributed systems with real-time operational constraints.Java Message Service(JMS)is a messaging standard for enterprise systems using Service Oriented Architecture(SOA)for non-real-time operations.JMS allows Java programs to exchange messages in a loosely coupled fashion.JMS also supports sending and receiving messages using a messaging queue and a publish-subscribe interface.In this article,we pro-pose an architecture enabling the automated integration of distributed real-time and non-real-time systems.We test our proposed architecture using a distributed Command,Control,Communications,Computers,and Intelligence(C4I)system.The system has DDS-based real-time Combat Management System components deployed to naval warships,and SOA-based non-real-time Command and Control components used at headquarters.The proposed solution enables the exchange of data between these two systems efficiently.We compare the proposed solution with a similar study.Our solution is superior in terms of automation support,ease of implementation,scalability,and performance.     

指挥自动化系统可生存性研究

可生存性是指当一个系统在受到攻击、出现错误或发生紧急事件时仍然能够完成其任务的一种能力.指挥自动化系统是现代战争中部队战斗力的倍增器.在信息化战争条件下,传统的安全策略将不能保证指挥自动化系统的生存能力.通过介绍可生存性思想,分析指挥自动化系统及子系统的特点和存在的问题,提出了利用可生存性设计指挥自动化系统的基本原则.     

基于CAN总线的装甲车辆电源系统在线检测设计

提出了一种装甲车辆故障在线检测方案,采用C8051F040单片机作为控制单元,通过相应的接口电路对装甲车辆电源系统的各路信号进行实时采集,并将结果通过CAN总线传入上位机,与其它检测子系统构成装甲车辆在线故障检测系统.     

PIP工艺制备的C/SiC复合材料的氧化行为

PIP工艺制备的C/SiC复合材料中SiC基体富碳,因此增强体和基体均容易氧化。碳纤维和无涂层保护C/SiC复合材料试样在400~1300℃的氧化速率随温度升高而加快,低温为反应控制,高温为扩散控制。CVD-SiC涂层保护C/SiC复合材料和由CVD-SiC层、自愈合层、CVD-SiC层三层涂层保护C/SiC复合材料在400~1300℃的氧化先随温度升高而加快,然后减慢。三层涂层在800~1300℃有非常好的保护效果。扫描电镜照片显示自愈合层的玻璃态物质进入涂层裂纹中,填充裂纹且阻挡氧的通过,从而有良好的抗氧化保护效果。     

基于XML的结构设计方法在武器器材管理中的应用

提出了基于标准XML、简化XML的编码结构设计方法并用于武器器材管理。该方法可方便实现不同武器器材的二维条码和电子标签结构设计,具有通用性和兼容性,可消除因编码结构不同而导致的“信息孤岛”效应,具有良好的扩展性和灵活性。     

基于径向基函数神经网络的漏磁信号反演

采用径向基函数神经网络的方法对漏磁信号反演进行了研究,由实验数据和仿真数据获得样本,在网络训练的基础上,建立了由缺陷的漏磁信号到缺陷二维轮廓图的网络映射,实现了缺陷二维轮廓图的漏磁反演,为漏磁定量化检测提供了一种可行的方法。     

反导作战管理技术研究

反导作战管理技术是指对反导体系内的传感器和火力资源进行以任务规划为核心的指挥与控制技术,主要包括传感器资源作战管理和火力资源作战管理两大部分。首先对反导作战管理与指挥控制系统的发展情况进行了简要分析,然后针对反导作战管理技术的内涵、主要任务、层次结构进行了系统研究,最后初步探讨了反导作战管理的核心内容和涉及的关键技术。