bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on the design of massive weight satellite transfer platform
Authors: Yang Chunsheng , Ren Zhenyue , Huang Yufeng , Xu Yiliu 
Published: December 2020

Abstract
The new generation of the DFH-5 platform satellite independently developed by China has been successfully launched by CZ-5 launch vehicle in Hainan satellite launch center. Up to now, the satellite has been running smoothly with good functions and services. It is the heaviest satellite launched in China with the highest technical content. In this paper, a kind of transfer platform is designed to meet the transfer requirements of heavy satellites such as the East five platform. The transfer platform is composed of body frame, omni-directional wheel set, console, battery, electric control system, etc. The transfer platform has the functions of independent control, safety detection, accurate positioning, human-computer interaction, etc. through analysis and calculation, the ultimate compression and anti-overturning performance is stable and reliable, meeting the needs of satellite and other tooling during the final assembly test. Then it can reduce the risk of assembly operation and improve the efficiency of assembly test.
Design of New Slotted Structured Grinding Wheel
Authors: Ding Ning , Jiang Shuna , Duan Jingsong , Liu Chao , Cui Shanfu 
Published: December 2020

Abstract
The grinding efficiency of conventional grinding wheel is low, and the phenomenon of grinding burn is serious. Although the ordinary slotted grinding wheel can reduce the grinding temperature, it also reduces the machining accuracy of the workpiece. In view of this problem, a new design scheme of slotted grinding wheel is proposed while only a part of the groove on the grinding wheel is slotted, and the grinding mode of the groove and the non-groove is used to alternate with each other. It is not only beneficial to the entry of grinding fluid to reduce grinding temperature, but also to improve the problem of poor roughness in the machining process of groove grinding wheel.
Optimization of anti-wear performance evaluation method of hydraulic oil based on four-ball machine
Authors: Zhen Penghou , An Haizhen , Chen Li , Liu Min 
Published: December 2020

Abstract
To establish a scientific and effective method for evaluating the anti-wear performance of hydraulic oil, the L9 (34) orthogonal test scheme with 4 factors and 3 levels is rationally designed by using the four-ball machine and combined with the actual working conditions of the hydraulic system of construction machinery. The test and repeated verification are carried out by taking wear scar diameter, wear scar morphology, oil temperature change during the process and abnormal noise as evaluation indexes. The results show that the selected test method (588N, 90min, 75°C, 600r/min) has good discrimination and repeatability for different quality grades of hydraulic oil; this method can realize the quality control of the anti-wear performance of hydraulic oil, and can be used in the research of hydraulic oil in laboratory and the screening method before the bench test, and provide the basis for the rational selection of lubricating oil in hydraulic system.
Welding procedure Research of ASTM B708 R05252 tantalum sheets
Authors: Jiang Cheng-Jun , Zou Xiaohui , Xue Xiaolong , Wang Wei 
Published: December 2020

Abstract
The weldability of ASTM B708 R05252 tantalum sheet was analyzed, and the mechanical properties, bending properties and corrosion resistance of tantalum sheet were tested by GTAW butt welding. Test results show that butt joints by this welding procedure perform good mechanical property, and the metallographic microstructures &corrosion resistance of the welding joint are normal. It expresses the great significance of formulating the welding procedures of tantalum pressure vessels.
Stiffness and Mode Analysis of Framework for an Aerial Inertial Stabilized Platform
Authors: Lang Yuedong , Tian Xiu , Kai Yang , Hou Eryong 
Published: December 2020

Abstract
In the framework structure design of an aerial inertial stabilized platform (AISP), simulation software was used to analyze its stiffness and vibration mode. Its stress and strain distributions and modal characteristics under a large load were obtained. Then, according to the analysis results, its structure optimization design was implemented to meet the requirements of AISP in control precision. The results of optimized analysis showed that the rigidity of optimized frame structure was significantly improved, while its dynamic characteristics were also effectively improved. Therefore, it verified the necessity and feasibility of engineering analysis for the platform structure design, and it could provide a theoretical basis for AISP design.
Comparative Research on Temperature Measurement Methods in Vacuum and Low Temperature Environment
Authors: Liu Jinlong , Zhang Xiaoli , Li Qiong , Wang Qingyu , Li Xiaoxiao , Wang Lei , Hong Chenwei 
Published: December 2020

Abstract
In this paper, two kinds of temperature sensors (platinum resistance and thermocouple) commonly used in vacuum and low temperature (below 100k) are compared. The same data collection method is used. The temperature measurement results are analyzed to obtain some differences in the temperature measurement of platinum resistance and thermocouples under vacuum and low temperature conditions. At the same time, the differences between the two temperature measurement methods are sorted out, and the temperature measurement methods in different environments are given. Some suggestions, and some prospects for future research directions are given.
Optimization design and experimental analysis of bionic viscosity reduction of chisel type energy saving subsoiling shovel
Authors: Huang Weihua , Li Ming , Ge Chang , Wei Lijiao , Niu Zhaojun , Zhu Xianzhong 
Published: December 2020

Abstract
In order to solve the problems of adhesion to soil and high resistance in traditional subsoiling shovel operation, a bionic energy-saving subsoiling shovel with bionic viscosity reducing and resistance reducing chisel is designed based on the polygon geometry structure of pangolin scales. In this paper, the bionic modeling analysis of chisel type energy-saving subsoiling shovel is carried out by using 3D modeling software. According to the simulation analysis data, we optimize the key structural parameters, and try to produce the bionic energy-saving deep scarifier with reducing viscosity and resistance. In order to study the performance of the chisel type energy-saving subsoiling shovel, L9 (34) orthogonal test was carried out in the field with the number of bionic surfaces, coating materials and forward speed as the experimental factors, and the adhesion soil amount and traction resistance as the test indexes. The results show that the order of influence of each factor on the index is the number of subsoiling shovel bionic surface, coating material and advancing speed; the optimal horizontal combination is that the number of bionic surfaces of subsoiling shovel is 10, the coating material is UHMWPE, and the advancing speed is 6km/h.
Collaborative Control Of Power System Based On Source Network Load Storage Management
Authors: Lin Wei , Zhang Zhe , Yu Yang 
Published: December 2020

Abstract
Vertical coordination of charge storage in source network refers to the coordination among energy transmission network, transport resource network and utilization and development of resources and energy through energy flow, information flow interaction and energy conversion technology, which plays a role in unifying user energy demand, expanding power demand side management function and amplifying power demand side operation. In this paper, the differential equations are combined with the power system circuit structure to obtain differential equations, and the differential equations are calculated and park transformed. On this basis, the construction goal of the power system cooperative control model is proposed, and the power grid cooperative storage optimization element is considered to construct the power system cooperative control model. It is proved by simulation experiments that the research method in this paper has higher frequency deviation adjustment capability, can provide more stable power output capability, and has better promotion effect.
Nonlinear Numerical Analysis of The Plate Based on Thermo-Magneto-Mechanical Coupling
Authors: Bian Yuhong , You Qun 
Published: December 2020

Abstract
The thermo-magneto-elastic problems of the thin rectangular plate under the interaction of mechanical field, temperature field, and electromagnetic field are studied. On the basis of the geometric equations, physical equations, kinetic equations, and electrodynamics equations of the plate, the thermo-magneto-elastic basic equations of a thin rectangular plate are developed. According to Joule’s heat effect in the electromagnetic field and thermal equilibrium equation, temperature field in the thin rectangular plate, integral eigenvalues are derived. Adopting the difference, the quasi-linearization methods, quasilinear differential equations are obtained. Change rules of the stresses, temperatures, and deformations in the thin rectangular plate with electromagnetic parameters are analysed. It is confirmed that the stresses, strains, and temperatures in the plates can be dominated by altering electromagnetic and mechanical parameters through an example calculation.
Research on evaluation model of equipment research project procurement based on structural equation
Authors: Miao Xinyu , Cheng Zhonghua , Gao Tielu , Yue Shuai 
Published: December 2020

Abstract
This paper analyzes the problem that the variables that may be encountered in the procurement process of equipment research projects are difficult to measure directly and accurately. A bid evaluation model based on structural equation with 30 evaluation indexes is established, and a set of bid evaluation methods more suitable for equipment scientific research projects is proposed. Through the combination of factor analysis, path simulation test, multi group comparison and causality analysis of structural equation model, the data analysis and processing of the relationship between variables, indicators and variables are realized, and the continuous fitting test makes the model more accurate and effective.
Research and Simulation Analysis of Automobile Vibration System
Authors: Zhou Yang , Dong Mingming 
Published: December 2020

Abstract
Based on the analysis of the vehicle vibration system and considering the effects of the body’s roll, pitch and seat on the vibration, this paper establishes an 11-degree-of-freedom vibration model of the vehicle. Then, with the help of MATLAB/SIMULIK, the vertical vibration of the vehicle is simulated, which considers the asymmetry of the road surface excitation and the lag effect of the rear wheel input. After optimizing the suspension parameters, this paper compares the seat acceleration and the dynamic deflection of the suspension before and after optimization. The results show that the model established in this paper has a certain effect on improving the riding comfort of the vehicle.
Detection of Cracks on Mobile Screen Based on Computer Vision
Authors: Tian Haofei 
Published: December 2020

Abstract
In this study, a computer vision-based identification system is established for the detection of cracks on mobile screen. By using a CCD (Charge Coupled Device) industrial camera, images of mobiles’ screen on the industrial assembly line are obtained. For each mobile, the CCD industrial camera is revolved from several different viewing angles during detection of the mobile to avoid that cracks cannot be detected from specific viewing angles. Then the obtained RGB model images are converted into HSI color format. According to the obtained hue and saturation values, this system could accurately and effectively identify both large and tiny cracks on mobile screen, which demonstrates the validity of the machine system. This system could help modern industry for fast and effective cracks detection on mobile screen.
Review of Permanent Magnet Lifting Technology
Authors: Ding Ning , Cui Shanfu , Liu Chao , Duan Jingsong , Jiang Shuna 
Published: December 2020

Abstract
Permanent magnet lifting technology refers to the knowledge of the process of magnetic material suction unloading and transfer through permanent magnet lifting device with strong magnetic material as magnetic field energy. Compared with the traditional electromagnetic lifting device, the permanent magnet lifting device attracts and lifts ferromagnetic objects through the magnetic force of strong magnetic permanent magnet materials without excitation current during the lifting operation. Therefore, the permanent magnet lifting device has the advantages of energy saving, reliable use, low cost and high weight absorption ratio. This paper introduces the development of permanent magnet lifting technology, including the working principle and design problems of permanent magnet lifting device. According to the different demagnetization methods, it can be divided into electromagnetic demagnetization type lifting permanent magnets and mechanical demagnetization type lifting permanent magnets. Finally, the prospect of permanent magnet lifting technology is prospected and suggestions for its development are put forward.
Design of Motion Control System for Fire Fighting Robot
Authors: Nie Fuxiang , Wei Hongmei , Li Feng , Jiang Jie 
Published: December 2020

Abstract
This paper introduces a kind of motion control system of fire fighting robot. The main framework of the action of fire fighting robot is wireless remote control, including the head action to control the motion direction of fire fighting robot water gun. The data of head motion is collected by MPU6050 gyroscope. The camera on the water gun feeds the image back to the operator’s VR glasses to realize the synchronization of vision. The water gun can realize the rotation of yaw angle and pitch angle, and the driving method adopts a stepping motor. The four way navigation key module controls the action of the water gun. The two axis rocker sensor module controls the working state of the robot’s driving motor, and the robot uses the track driving method. The control system can be applied to most of the fire fighting robots used by remote control.
Research on the Density of Magnetic Fluid and its Application in Mineral Separation
Authors: Hao Ruican , Liu Huagang , Wang Shang 
Published: December 2020

Abstract
The density of magnetic fluid is important for some applications such as mineral processing. Magnetic fluid is a nano-sized magnetic material which has superparamagnetism. The density of magnetic fluid with no magnetic field was introduced. The measuring method was studied and the calculating formula was deduced. Since magnetic fluid could be magnetized, it could be controlled by magnetic field. The density of magnetic fluid could be changed by magnetic field. The buoyancy of magnetic fluid in magnetic field was researched and it was concluded that the buoyancy force of magnetic fluid in magnetic field is related to the mass, the volume, the permeability, the magnetization of magnetic fluid and the gradient of magnetic field. For a certain magnetic fluid, the parameters of itself are fixed. Then the gradient of magnetic field is the mainly factor influencing the magnetic force. A density measuring method for magnetic fluid in magnetic field was introduced. A mineral separation device based on magnetic fluid was introduced. And the principle of the mineral separation device with magnetic fluid was studied. More kinds of magnetic fluid and applications could be explored by researching magnetic fluid.
Failure analysis of a water wall tube
Authors: Ren Facai , Xu Jinsha , Si Jun 
Published: December 2020

Abstract
The failure reasons of a boiler water wall tube used in coal-fired power plant were analyzed by the chemical composition, optical microscope and scanning electron microscope analysis. The results of metallographic analysis show that the microstructure is ferrite and pearlite, pearlite has no obvious spheroidization. The comprehensive analysis results show that the abnormal oxidation erosion leads to the leakage failure of the water wall tube at the fire-facing side.
Corrosion Behavior of C4 Coating Produced by Cladding Laser in Sulfuric Acid
Authors: Ma Jiale , Liu Zongde 
Published: December 2020

Abstract
C4 coating was prepared by high power multilayer laser cladding. Corrosion behavior of the C4 coating and 316 stainless steel in sulfuric acid solution was investigated. The corrosion rate was measured by using the mass loss method. Obvious corrosion morphology and serious exfoliation corrosion of 316 stainless steel are noticed in sulfuric acid solution. While C4 coating after corrosion test shows nearly unchanged surface morphology. The results show that corrosion resistance of C4 coatings is higher than 316 stainless steel. The corrosion morphology was observed by SEM(Scanning Electron Microscope), and the elements distribution of corrosion products was analyzed by EDS(Energy-Dispersive X-ray Spectroscopy).The results show that the S element content increased with the extension of corrosion time, while the Cr content decreased. For the 316 stainless steel, with the extension of corrosion time, the content of C increased. The sulfur-containing corrosion products on the surface are all dissolved in the acid solution. The contents of Cr and Ni decreased, and their passivation ability was weakened. The results indicate that C4 coating exhibits better corrosion resistance in sulfuric acid solution due to the stable formation of dense oxide film on the surface.
Characteristics Study on in-situ NbC Particles Reinforced Ni-based Alloy Composite Coating by Laser Cladding
Authors: Xiao Yi , Liu Zongde 
Published: December 2020

Abstract
The in-situ synthesized NbC particles reinforced Ni-based alloy composite coating was successfully fabricated by laser cladding a precursor mixture with a mass percentage of 80%Ni-based alloy powder (Nb10 powder) and 20% Cr3C2 powder on Q235 steel substrate. Another composite coating was also produced by laser cladding using 100% Ni-based alloy powder as cladding material for comparison. X-ray diffraction (XRD), scanning electron microscopy(SEM), energy spectrum analysis(EDS), microhardness measurement and wear resistance test were performed on the cladding coating. The results show that Ni-based alloy composite cladding coatings are homogeneous and free from cracks, the cladding coating and the substrate exhibit excellent metallurgical bonding. The main phases of the composite coating were (Fe,Ni) solid solution, NbC and Cr23C6 reinforced phases. Abundant NbC particles can be uniformly formed via in-situ reaction between niobium and Cr3C2 in the molten pool during the laser cladding process, and they are commonly precipitated in three kinds of morphologies: granular, quadrilateral and petaloid shape. However, the comparative coating was only composed of (Fe,Ni) solid solution, without the formation of any carbides. The microhardness and wear resistance of composite coating of NbC particle reinforced composite cladding coating were improved significantly, the results indicate that the existence of NbC particles plays a crucial role in enhancing the performance of the cladding coating.
Effect of Coal Gangue Grain Size on Strength of Foam Concrete
Authors: Ni Kun , Shi Yunxing , Hu Zhihua , Zhang Yangang , Wan Pengcheng 
Published: December 2020

Abstract
This work shows that the grain size of coal gangue has affects on the strength of foam concrete with coal gangue. Coal gangue was crushed and separated into three grades sand according to the size which were 0.16-0.6mm, 0.6-2.5mm and 2.5-5mm. Then these coal gangue sand was used to manufacture foam concrete with a density of about 850kg/m3. The compressive, flexural strength, water absorption and softening coefficient of coal gangue foam concrete were tested. The results show that compressive strength of foam concrete exhibits a monotonic decreasing while coal gangue content increases and the decreasing rate would accelerate with the increasing of grain size. And the water absorption increased with the coal gangue content and grain size increasing. Small size coal gangue could improve the water absorption resistance. The coal gangue foam concrete is a water-resistant material and the softening coefficient is above 00.85, when the diameter of coal gangue fine aggregate is below 2.5 mm.
Principle and protective measures of high temperature corrosion of garbage incineration boiler
Authors: Wang Wei , Liu Zongde 
Published: December 2020

Abstract
With the increasing amount of garbage, the environmental pressure is increasing. Waste incineration power generation technology has become the main way to deal with waste. However, due to the complex and variable composition of waste and the large amount of chlorine contained in the waste, the high temperature corrosion of the heating surface of the waste boiler is much more serious than that of the coal-fired boiler. This article sorts out the high-temperature corrosion mechanism of the heating surface of the waste incineration boiler, and summarizes the relevant protective measures.
Experimental Study On Preparation Of C30 Concrete By Replacing Fine Aggregate With Molybdenum Tailing Slag
Authors: Miao Donghui , Guo Yuanqiang , Zhang Geng , Wang Xin , Jin Jia Qi 
Published: December 2020

Abstract
Which is composed of crystalline silica, a small amount of mica and molybdenum ore salts, and is non-radioactive. As a fine aggregate of concrete, the water demand of fresh concrete will be increased. By increasing the dosage of water-reducing agent, the construction performance of concrete mixture can reach the actual pumping concrete slump-flow (500±30) mm under the condition of unchanged water demand, and the same construction performance as that of mechanical sand concrete can be obtained. With the gradual increase of the replacement ratio, the compressive strength gradually decreases. When the replacement ratio does not exceed 40%, the 90d compressive strength decreases less than 3.1% compared with the mechanical sand concrete, which has less impact on the strength and can fully meet the requirements of the mechanical properties of C30 concrete.
Defects Dominated Regulation of Fluorescence Properties of Copper Nanoclusters
Authors: Ai Lin , Meng Hong 
Published: December 2020

Abstract
At present, many studies have suggested that during the luminescence process of Cu nanoclusters, the increase of metal defects can further enhance the emission, but the lack of understanding of the defect luminescence principle makes it tough to further adjust the emissions of luminescence and achieve multicolor luminescence. Herein, the 2D assembled sheet materials are modified with surface or deep defects. Metal defects affect the luminous energy level by regulating the optical properties of 2D assembled materials and regulating the detailed progress of exciton radiation action. Further more, research shows that continuous adjustment of the emission color can be achieved by only regulating the ingredient of surface defects and deep metal defects, and such surface metal defects have a lighter level and multiple sub-levels, which broadens the luminescent color. Finally, white light emitting diodes (WLEDs) with warm, cool and pure white color temperatures were achieved for illuminating applications used the full-color luminescence of Cu clusters.