Numerical Simulation of Thermal Stress Fields in the Magnetic Quenching Process of 45 Steel

Based on a transient temperature distribution of a 45 steel cylinder workpiece during magnetic quenching, which was obtainedby solving the governing equations with nonlinear boundary on the condition of coupling effects of heat-magnetism. Accordingto the     

有机纤维材料用软膜乳液阻燃剂的制备

采用甲醛、尿素、三聚氰胺、脒基脲磷酸盐为原料,以硼砂、硼酸、氨水为pH调节剂合成了保护胶;在保护胶存在下,以预乳化的丙烯酸酯混合单体于82-88℃共聚合成乳液,将其涂布于有机纤维材料,干燥后得软膜透明阻燃涂层。用其处理的涤棉布阻燃性能为:损毁长度68mm、续燃时间1s、阴燃时间3s、氧指数62、吸附干量287g/kg,处理的纸板的阻燃性能为:平均炭化长度77mm、平均续焰时间2s、平均续灼燃时间32s、吸附干量283g/kg。     

VIS+AI: integrating visualization with artificial intelligence for efficient data analysis

Visualization and artificial intelligence (AI) are well-applied approaches to data analysis. On one hand, visualization can facilitate humans in data understanding through intuitive visual representation and interactive exploration. On the other hand, AI is able to learn from data and implement bulky tasks for humans. In complex data analysis scenarios, like epidemic traceability and city planning, humans need to understand large-scale data and make decisions, which requires complementing the strengths of both visualization and AI. Existing studies have introduced AI-assisted visualization as AI4VIS and visualization-assisted AI as VIS4AI. However, how can AI and visualization complement each other and be integrated into data analysis processes are still missing. In this paper, we define three integration levels of visualization and AI. The highest integration level is described as the framework of VIS+AI, which allows AI to learn human intelligence from interactions and communicate with humans through visual interfaces. We also summarize future directions of VIS+AI to inspire related studies.     

基于矢量方法的图像预处理及其应用

图像预处理是图像处理中量之间的内在联系,具有保边缘、细节和抑制颜色偏差的优点,而且计算量小、算法简单、易于实现.将该方法应用于眼底图像中,取得了令人满意的效果,为眼底图像的后续处理奠定基础.     

265m2烧结主传动柔性减速机受力分析及改造

针对天钢集团公司炼铁厂烧结车间265m^2烧结机主传动柔性减速机出现的吊挂滚动轴承损坏和传动异响问题，分析了烧结机传动装置定位轴承受力情况，找出产生故障的原因，提出具体的改进措施和改造方案。经实践表明，效果良好。     

基于AHP-模糊综合评价的海上风机基础状态评估

为掌握服役时期的海上风机基础状态并对海上风机基础状态进行评估,提出一套结合故障树分析（Fault Tree Analysis,FTA）法、层次分析（Analytic Hierarchy Process,AHP）法和模糊综合评价法的海上风机基础状态评价模型。针对导管架式海上风机基础,考虑海洋腐蚀和海底冲刷,通过p-y曲线法模拟桩-土相互作用,在风浪流载荷的作用下进行动力响应分析,采用故障树对其失效模式进行分析,确定评价指标,构造判断矩阵计算指标权重,运用模糊综合评价法对各指标和整体进行评价。该模型结合各评价方法的优点,使评价结果更有说服力,可为海上风电场运行维护管理提供技术参考。     

基于Matlab的电子式互感器传变特性仿真研究

随着国内外智能变电站系统进入实际应用阶段,大量的电子式互感器投入使用,对电子式互感器的仿真研究也越来越多。利用Matlab中的simulink模块搭建了罗氏线圈的仿真模型,并对其传变特性进行分析,在此基础上提出了一种有源、无源级联积分器,通过仿真找到了积分器传变特性随元器件变化的规律,并对积分环节的元器件进行优化,提高了罗氏线圈对雷击电流传变的精确度。     

磷掺杂比例对a-Si∶H薄膜太阳电池窗口层光电性能的影响

采用RF-PECVD法制备了磷掺杂氢化非晶硅(a-Si∶H)薄膜作为太阳电池窗口层.通过椭偏仪、Keithley 4200对所制备样品进行分析测试,研究了不同掺杂比例对非晶硅薄膜沉积速率、消光系数、折射率、光学带隙及电导率等的影响.实验表明:薄膜沉积速率随掺杂浓度升高先减小再增大;薄膜消光系数、折射率及禁带宽度随掺杂浓度升高呈现先减小后增大再减小的现象;电导率则先增大后减小再增大.