纳米金属粉在润滑中的应用

介绍了纳米金属粉的特性、制备以及其在润滑油中的分散、稳定悬浮等几个方面的内容，分析了纳米金属粉作添加剂的摩擦学性能，并指出了纳米金属粉作为润滑油添加剂在摩擦学中的研究进展和发展趋势。     

超细粉碎技术的研究与应用

本文介绍了超细粉碎技术的一般方法及设备，着重了气流粉碎的方法，通过实验对此设备进行深入的研究，制造出先进的粉碎设备，利用这项技术制得了超细珍珠粉、超细花粉、超细中药材。     

从重压研磨式超微粉碎机看中药超微粉碎的新理念

从当前超微粉碎设备用于中药超微粉碎所存在的问题入手，阐述了HMB型重压研磨式超微粉碎机原理及特点，同时也列举了该设备在中药起微粉碎应用的实效。     

超微粉碎机组的特点及在中药生产中的应用

从机械式超微粉碎设备与气流式的超微粉碎设备的比较入手，阐述了超微粉碎机组的原理与特点，同时对其在中药生产中的应用进行了探讨。     

制药行业粉碎的基本概念与设备的选择

从制药行业粉碎的基本概念与粉碎设备的基本概述入手,介绍了几种经典制药行业的粉碎设备,并探讨了粉碎设备的选择原则,可为相关人员参考。     

项目之四 金属芯焊丝的研究与应用——未来焊材发展的新趋势

一．项目背景 金属芯焊丝是指焊丝药芯中大部分是金属粉，其余很少的一部分是矿物粉的焊丝。其中金属粉所占的比例为80％～90％，矿物粉只有10％～20％。这种焊丝一般采用CO2或Ar＋CO2气体保护焊接，也可采用TIG焊接。由于金属芯焊丝具有造渣量少、熔敷速度快、飞溅率低，     

浙江丰利超低温微粉制备设备列入省科技计划重点科研项目

国家重点高新技术企业浙江丰利粉碎设备有限公司与中国航空工业总公司第609研究所合作开发的生物医药工程所用的超低温微粉制备成套设备，日前列入2006年度浙江省科技计划重点科研项目。该项目的研制，将解决在常温下难以粉碎的生物医药材料的难题，为我国生物医药工程行业提供了生产高附加值粉体材料的新设备。     

超细粉碎技术的研究与应用

本文介绍了超细粉碎技术的一般方法及设备,着重报导了气流粉碎的方法。通过实验对此设备进行深入的研究,制造出先进的粉碎设备。利用这项技术制得了超细珍珠粉、超细花粉、超细中药材。     

鼠笼式搅拌磨机粉碎力的研究及应用

鼠笼式搅拌磨机是基于湿法粉碎机理，将输入功率直接高速推动研磨介质运动来实现磨细物料的一种超细粉碎设备。通过分析磨机中研磨介质的冲击和研磨作用，确定影响粉碎力的主要因素，以及与能量利用的关系。并利用某型号鼠笼式搅拌磨机进行磨矿实验，实验结果证明理论分析的正确性。这里的研究结论对如何提高搅拌磨机的粉碎效果提供一定的理论依据。     

超细粉碎及表面改性新技术

介绍了近年来在超细粉碎技术与表面改性研究方面的一些新成果，重点介绍了易燃易爆物质、刚性柔混合型物质的超细粉碎技术及设备，并介绍了几种超细粉体的表面改性处理方法。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

ANGULAR DISTORTION ALLOWABLE VALUE AND ASSESS METHOD OF WELD ON COKE TOWER

A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.