bluuebunny/crossref_metadata_2025 huggingface dataset:
Removal of Cr(III) from Acid-Dissolution Water of Chromium Sludge by Cation Exchange Resin
Authors: Li Huai , Chi Zi Fang , Li Jian Zheng
Published: September 2013

The purpose of the present study was to demonstrate the feasibility of adsorbent IRN77 resin for removal of Cr (III) from acid-dissolution water of chromium sludge. Extractions of Cr (III) from a model solution and a acid-dissolution water of chromium sludge were studied by IRN77 cation-exchange resin, respectively. The results suggested that extraction of Cr (III) with this resin followed the Lagergren first-order kinetics. The resin was high selective for Cr (III) sorption in the pH range 1-5 from a model solution containing 150 mg/L Cr (III), and a Cr (III) extraction above 99% was obtained. The studies further showed that 80% Cr (III) from a diluted acid-dissolution water containing about 150 mg/L Cr (III) could be removed which validated the process developed with model waste solution. At the same time, from the loaded resin 99% Cr (III) was eluted with 10% H2SO4. Therefore, this cation-exchange resin could be used as an efficient adsorbent material for the removal of chromium from acid-dissolution water of chromium sludge.
Study on the Removal of Cadmium from Underground Water Using a Complex Modulation Electromagnetic Device Based on Correlation of Electromagnetic Field and Electrical Conductivity
Authors: Ha Sang An , Jung Byong Ho , Lee Jong Moon , Kim Kwon Hoo , Wang Jei Pil
Published: September 2013

The objective of this study was to increase flux and decomposition speed through the development of a multi-type electrical field decomposition facility that employs a more complex modulated electromagnetic field than that used in existing decomposition facilities where recalcitrant organics or heavy metals are combined together. Further, in this study, optimized foundational data was derived from the results obtained following field work. As a result, when an electrical field was applied to an electrolyzer, decomposition of the electrolyzer was carried out quickly, thereby showing higher efficiency because an electrical field was permeated to the contaminant faster compared to the case where an electrolyzer was not added. Keywords: Electromagnetic field, Heavy metal, Electrolyzer, Electrical field
Derivation of Optimum Study Factors for Samples Contaminated with Cd Using Electric/Magnetic Field and ORP
Authors: Ha Sang An , Wang Jei Pil
Published: September 2013

A purpose of the present study is to derive optimum study factors for removal of heavy metals using combined alternating current electric/magnetic field and electric membranes for the area contaminated with heavy metals in soil or underground water. ORP (Oxidation Reduction Potential) analysis was conducted to determine an intensity of tendency for oxidation or reduction of the samples contaminated with heavy metals, and electrical membrane treatment was used with adjustment of concentrations and voltages of liquid electrode (Na2SO4) to derive a high removal rate. Removal constants were analyzed to be 0.0417, 0.119, 0.1594 when the voltages were 5V, 10V, 15V, respectively, and treatment efficiency was shown to increase as the liquid electrode concentration was increased. Keywords: heavy metals, electric/magnetic field, ORP, electrical membrane
Experimental Research on Ultrasonic Torsional Vibration-Assisted Grinding of Hard and Brittle Materials
Authors: Sun Ya Zhou , Zhang Jing , Liu Hai Tao , Shi Hai Bo
Published: September 2013

An experimental study of quartz glass grinding with ultrasonic torsional vibration assistance is presented. The grinding forces and surface roughness are measured. The results show that the grinding force and surface roughness with ultrasonic torsional vibration assistance are much less than those in conventional grinding. The grinding force increases with the feed rate of workpiece and the depth of grinding, and decreases with the speed of wheel spindle. This research indicates that the ultrasonic torsional vibration-assisted grinding can enhance grinding performance and be an effective method for the machining of hard and brittle materials.
Optimization Research on Converter Steelmaking Process Parameters Based on DOE
Authors: Lu Bi Hong , Li Yu Kai , Qu Bao Zhang
Published: September 2013

The temperature and carbon content at blow end point should be controlled strictly during the BOF converter steelmaking process. Meanwhile many factors have impact on the temperature and carbon content at blow end point. These factors include initial weight of molten iron, initial weight of scrap steel, oxygen blow duration, the temperature and carbon content when lowering the sublance, as well as the weight of all kinds of addition reagents. In order to determine the optimized process parameters so as to reach the ideal temperature and carbon content at blow end point, this paper built a series of experiment programs based on DOE. According to the experiment programs, authors conducted these experiments with the help of RBF neural network and analyzed each parameters as well as some interactions impact on target. According to the statistical analysis results of experiment data (the SNR), authors extract significant factors and reached an optimized process parameters A3B3C2D1E1F3G2H3J2. According to the RBF neural network, the prediction error of carbon content and temperature is only 0.0063 and 0.0159 respectively. The result proves that DOE is an effective method in optimizing process parameters, and worth promoting and applying in converter steelmaking process.
Modification on TiO2-a Photosensitive Material
Authors: Sun Miao , Hu Yong , Guo Hua
Published: September 2013

TiO2, as photosensitive materials, has attracted much attention owing to its potential application in the solution of environmental pollution during the past decades. Four doped TiO2systems were constructed and studied by using the first principle based Density Functional Theory .The results indicate that P-doped and N-doped TiO2all have better light absorption in the visible light area than pristine TiO2although the band gap of N-doped system reduced less. However, the band gap of F-doped and Cl-doped TiO2increase a little, which causing the absorption to decrease. We suggest from the results that the P atom and N atom are valuable in the modification of TiO2.
Gear Modification Analysis to Improve the Vibration and Noise of Automobile Transmission
Authors: Li Yong Xiang , Shen Wen Quan , Zhao You Jia , Hu Xiu Yang
Published: September 2013

As to the practical problems of vibration and noise of automobile transmission, this paper focuses on the gear pair of automobile transmission as the research object to realize the gear meshing analysis with the software MASTA. Through establishing the simulation model of the automobile transmission to simulate the actual load condition, the process analysis of comprehensive intelligent gear modification is carried on. Finally, the reasonable modification results indicate that the simulation analysis recurring to the professional software can obtain the modified gear of the automobile transmission more suitable to the engineering application, which will provide good guidance for the development and application of new transmission gear in the future and lay the research foundation to reduce the vibration and noise of the transmission based on the gear modification method.
Evaluation Method of Assembly Yield in Three-Dimension Single-Station Assembly Process Based on Number-Theoretical Net and 3DCS
Authors: Wen Ze Jun , Zhang Fan , Hu Jia
Published: September 2013

Evaluation method of assembly yield in three-dimension single-station assembly process is presented based on Number-Theoretical Net (NT-net) and 3DCS. Firstly, based on the analysis of fixture deviation affect assembly deviation under arbitrary layout, the three dimensional single-station assembly deviation model under arbitrary layout is developed. Then, the principle of generating good lattice point (GLP) based on NT-net method is introduced. Afterwards, taking fixture locating variations which are sampled using NT-net method for input vectors, the samples are substituted into assembly deviation model of dimension variation propagation in single-station assembly processes to get output vectors. The statistics for qualified sample is accomplished, after comparing output vectors with the variations of measuring points on component. Assembly yield in three-dimension single-station assembly processes is gained when qualified sample divided by total sample. Finally, a real case in sheet metal assembly is given as an example to calculate the assembly yield in three-dimension single-station assembly processes. The result is validated by 3DCS.
Kinetic Analysis of Wind Turbine Blades
Authors: Zhang Jian Jie , Sun Wen Lei , Wan Wei Yi
Published: September 2013

This paper using ANSYS software such as wind turbine blades and other key components of the kinetic analysis and research, the kinetic analysis method and finite element analysis software combine to validate the experimental data is reasonable. Specific contents are: wind turbine blade dynamics analysis. The wind turbine blades as slender cantilever, so you can use the ANSYS program flexible dynamic analysis modules. The module is used to calculate the alternating loads flexible body structural response, namely due to the coupling effect of making wind turbine blades load acceleration, deformation at any time are changing. Also changes with time of the blade root of force and torque, the forces and torques of the hub provides theoretical data for further analysis. In this paper, the key components that wind turbine blades for the kinetic analysis, the relevant conclusions. Wind generator system for future scientific design, blades and other key components of the failure prediction assessment provides theoretical support.
Wind turbine blades rotate in the movement through the air to promote the flow of the wind energy into mechanical energy, electrical energy eventually [. Leaves the force in the system is particularly complex, by gravity, such as the formation aerodynamic pull, bend and other effects and coupling effects [. Leaves elongate resilient structure is characterized by large-scale, flexible. During operation, the fan blade damage resonance is an important reason, it is how to use the features to reduce structural failure of the fan so that the safe operation of wind power generation is one of key technologies [. Wind force generator is one of the most complex parts blades, due to its tangential short span long, flexible, and therefore prone to vibration, wind turbine blades are a variety of mechanical vibration occurs first site. Therefore, from the wind turbine operation and design considerations for wind turbine blades for stability margin analysis and linear stability analysis are important.
Reliability Analysis and Optimization of Large Mining Dump Truck Steering Knuckle
Authors: Liu Jiao Long , Hu Xi Zhi
Published: September 2013

This paper researched on the static and fatigue strength of a 220-ton mining dump truck steering knuckle by the method of reliability analysis, Monte Carlo and response surface. The geometrical model of the steering knuckle was established in CATIA and this model was imported into HyperMesh to obtain the finite element model of steering knuckle. With this finite element model the static strength of the knuckle was checked in the case of uneven road condition in ANSYS in order to acquire the stress nephogram and deformation map. Taking the random influential factors of the reliability into account, the reliability analysis file was compiled by the language of APDL. Then the static and fatigue strength analysis was executed by the method of Monte Carlo and response surface in the PDS module to obtain the statistical results of residual strength and fatigue life, the failure probability and reliability. Finally the quantitative calculation of the failure probability was achieved. In order to realize lightweight design and improve the economy, the knuckle was optimized in ensuring the premise of safety and reliability.
Analysis on Charge and Discharge Mechanism of the Modified Lithium Iron Phosphate Positive Material
Authors: He Jing , Li Ning , Gao Chun Fu , Luo Yi Wen , He Xin Sheng
Published: September 2013

Along with the thorough research of lithium ion battery, the lithium iron phosphate with the peridot structure becomes a new higher energy power battery anode material. But the charge and discharge mechanism of the modified lithium iron phosphate positive material did not get the unity understanding. In this paper, the carbon coating modification, metal ion doping, particle surfaces coated iron-phosphorus phase network and the nanoparticles of lithium iron phosphate were analyzed from the modified microstructure of the lithium ion phosphate batteries, so as to get the charge and discharge mechanism is the results of the active atoms and lithium ion embedded in the grid work and emergence in the layer structure, leading to the energy changes in lithium iron phosphate microstructure.
Finite Element Analysis of the Impeller on the Centrifugal Fan of the Crawler Wind Fire Extinguisher
Authors: Yang Chun Mei , Jing Feng Ming , Zhan Li , Wu Quan Hui
Published: September 2013

The study on the fan impeller of the wind fire extinguisher, describes the type and structure of the fan impeller, and static strength and modal analysis are applied on the impeller by using the finite element method, replacing the traditional calculation method of strength and stiffness. The total deformation, stress distribution and vibration characteristics of the fan impeller are obtained by calculating, and these results of the solution provide reliable theoretical basis for the subsequent optimal design of the impeller.
Development of Stiffness Measurement Instrument for Precise Elastic Elements in Electro-Hydraulic Servo Valve Based on Charge-Coupled Device
Authors: Yang Jian Xin , Shao Dong Xiang , Lin Ru , Wang Guang Lin
Published: September 2013

According to stiffness measurement of feedback rod and spring tube in electro-hydraulic servo valve, this paper proposed the measured piece displacement method based on CCD image sensors. On this basis, developing a stiffness measurement instrument based on CCD and giving the overall program design. Because ambient noise affect the image quality seriously, reduce measurement accuracy, image pre-processing is the core of software systems. The system can achieve automatic loading, measure, evaluate and output the result. This article select three types measured piece to experiment and calculation, then, calculate and analysis of experimental data.
Simulation and Experiment Study of Heat Dissipation of Heavy-Duty Vertical Lathe Workbench
Authors: Shao Jun Peng , Yang Xiao Dong , Zhu Jian , Mu Xiao Ning , Wu Ke Jia
Published: September 2013

In order to obtain the heat dissipation regularity of heavy-duty vertical lathe workbench with a large radius, mathematical model of convection heat transfer is established. According to the model, convection heat transfer process of the workbench is analysed at the velocity of 10~80rpm. The results show that velocity increasing not only impacts a greater influence on the temperature rising of hydrostatic bearing than the temperature rising of workbench, but also drives the heat increased the heat dissipation, degenerated the heat concentration phenomenon. Experimental results shows consistent to the workbench temperature numerical simulation results, the maximum error is 5%, which indicating that the numerical results conform physical regularities, the heat transfer mathematical model extends the range of applications of rotation convection heat transfer, so that vertical lathe heat dissipation situation analysis can be easier and more accurate.
The Development of NC Tenoning Machine's Control System Based on HUST Controller
Authors: Tao Jian Hua , Chen Bin , Fei Xiao Jun , Liu Hua , Bao You Wen
Published: September 2013

This paper is to solve the problems existed in the traditional tenoning, such as the poor flexibility, low accuracy, low efficiency, high labor intensity and so on. The HUST controller can provide multiple interfaces to connect various peripheral devices, and it is with the embedded PLC, multiple execution mode and control function, self-diagnosis and error prompt. So, the NC Tenoning Machines Control system based on the HUST H2 controller can automatically machine multiple tenons, including cross waist round tenon, vertical waist round tenon, round tenon, square tenon.
Analysis and Optimization of Embedded Flexible Clutch Brake Wheel and Brake Claw Structure
Authors: Wang Yong Mei , Wang Xi Gui
Published: September 2013

Based on the embedded flexible clutch mechanism as the breakthrough point, using ADAMS dynamic analysis software and ANSYS simulation analysis software, established the analysis model, the peak impact force between the different conditions of brake wheel and brake claw was obtained, the brake wheel and the brake pawl two allowable angular speed difference. At the same time to brake wheel and brake claw structure impact resistance ability as optimization objective, the different structural forms of brake wheel and brake claw structure peak impact in different conditions and the brake wheel and brake claw two permissible angular speed difference is analyzed and calculated.
Numerical Simulation of Lubricant Liquid Film of the Laser Surface Textured Micro-Pore Face Mechanical Seal
Authors: Zhang Peng Gao , Gu Bo Qin , Wei Long , Liu Qi He
Published: September 2013

The flow field characteristics of lubricant liquid film of the laser surface textured micro-pore face mechanical seal were studied by Fluent software, and the effects of geometric parameters of micro pores and operating parameters on the sealing performance were analyzed. The results show that the hydrodynamic effect of the laser surface textured micro-pore face mechanical seal is very obvious, and micro-pores make the friction state between rotating ring and stationary ring change to fluid friction. It can also be found that the rotating speed, the medium pressure, the area density and the liquid film thickness have effect on the sealing performance, among these influence factors, the area density has the greatest effect on the sealing performance, and it should be 0.2-0.3.
Optimization of Spring-Tube Fixture Based on Elasticity
Authors: Liu Wen Xuan , Wang Hui Feng , Wang Guang Lin
Published: September 2013

This article aims to optimize the clamp arm's length and the number and shape of the slots of the spring-tube fixture. First it uses the theory of elasticity to create the force deformation model of slot with regular shape, and analysis the deformation of the slot numerically. Then draws the relationship between the elastic deformation and the radius of the bore and the arms length while the force is not change, and comes an ideal shape of the bore through this relationship. It also simulates the deformation of fixture with different number of modified slots through the finite element analysis method, and optimizes the fixture for equal strength further. In summary it comes to meet the requirements of fixture theoretically. Finally through experiments the theory gets verified. From the results of experiments the conclusion can be drawn that the corrected fixture is better than before.
Wooden Door Slot Cutting System of CNC Machine Finite Element Analysis
Authors: Jiang Xin Bo , Wu Quan Hui , Jing Feng Ming , Yang Chun Mei , Luo Ge
Published: September 2013

Door hardware doors finished slot machining process is a very important step in the process, as doors hardware slots are in scattered locations, different specifications, difficult processing. This paper, the rotary table overcome dispersion slot door hardware, according to the characteristics of wooden slots hardware, selected the minimum number of spindles to satisfy all wood processing hardware slot, making maximize spindle utilization. The use of finite element design rotary table and key components of the cutting system, verify the reasonableness of its structure.
Experimental Study on the Wear of Diamond Tools in Precision Cutting of Titanium Alloy
Authors: Dong Guo Jun , Zhang Yu Liang , Zhou Ming , Li Mao Wei
Published: September 2013

Titanium alloy is a kind of materials difficult to be machined. In this paper, the author performed the wear experiment of polycrystalline diamond (PCD) tool in precision cutting of titanium alloy material Ti-6A1-4V, and carried out test for morphology and composition of the wear area of tool using scanning electron microscopy and energy dispersive analyzer. The results showed that the hard particles wear and adhesive wear were main reason for cutting tool wear, and main wear form is flank wear.
Research on the Control System of Flexible Polishing Machine Based on the Motion Control Card
Authors: Zhu Xi Lin , Huang Chen Jun , Zou Xiang
Published: September 2013

According to the difficulties encountered polishing Non-circular busbar axisymmetrical workpiece, analysis of Non-circular busbar axisymmetrical workpiece polishing requirements, proposes a new model of flexible polishing machine. Then according to the control precision and the developing cost into consideration, determine the "PC+ motion control card" as a form of structure of control system for polishing machine. In this paper, through the analysis of the polishing machine model, established the polishing machine control functions and tasks of each part, formulated the overall hardware frame of polishing machine control system. Then accrod of the polishing function in the program, using vc++6.0 development of form a complete set of application software. In the process of software development, The polishing machine control system operation platform for Windows xp, Using the object-oriented and modularized programming technique, designed and developed Man-machine interface , the initialization module, status display module, parameters setting module, operation module, fault diagnosis module and so on, each part is independent and interrelated, and through calling the dynamic link library. to control the GT400SV motion control card directly.
The Technology of Fast 3D Reconstruction Based on Stereo Vision
Authors: Zhang Ke , Gao Zhao
Published: September 2013

Reverse engineering has become an independent research area in CAD/CAM system with the development of modern manufacturing. The 3D reconstruction technology of generating a digit model from physical model is an important part of reverse engineering. The 3D reconstruction technology based on stereo vision has advantages such as non-contact measurement, simple system structure, being fast and efficient. In this paper, a fast 3D reconstruction technology based on stereo vision is presented. Firstly, BP neural network is used to simulate the mapping relationship between the 3D object and its images. Then, the epipole positions and adjusting coefficients for epipolar lines are calculated according to the epipolar line constraint. After the rectification transformations on the left and right image planes is conducted, the pairs of conjugate epipolar lines become collinear and parallel to the horizontal image axis. Therefore, when the stereo correspondences between the left and right images are being performed, the search is done only along the horizontal lines of the rectified images, which is highly advantageous to fast image matching for stereo vision and 3D reconstruction of free-form surface.
Research on the Integrated Design Method of the Compliant Mechanism with Electromagnetic Actuators
Authors: Peng Yong Hua , Fan Shi Xun , Zhang Lian Chao , Liu Hua , Fan Da Peng
Published: September 2013

An integrated design method of the compliant linear positioning device (CLPD) was researched, which was composed of a compliant guide mechanism and two electromagnetic actuators. Typically, the actuators are designed after the compliant mechanism, which may make it more complex to improve the performances of the CLPD. With the utilization of the multi-physics co-simulation technology, established a parametric multi-physics finite element model (MFEM) of the CLPD including the compliant linear guide mechanism and the electromagnetic actuators simultaneously in the COMSOL environment. Proposed the constraints of the dominant parameters, based on the analysis of their influence on the characteristics of the CLPD. Then an integrated optimizing design strategy of the CLPD was put forward. According to the strategy, a two degree of freedom long-range linear compliant mechanism and its matching actuators were designed. The experimental results showed the performance of the designed CLPD, which validated the design strategy.
Design and Numerical Analysis of Non-Uniform Electromagnetic Field Based on the Wedge Magnetic Pole
Authors: Huang Peng , Gao Chun Fu , He Xin Sheng , Ji Hai Feng
Published: September 2013

As there are relatively fewer studies about non-uniform magnetic field design and numerical analysis, a model of wedge pole electromagnet has designed and analyzed based on the traditional electromagnet design method. The effects of coil turn, conductor sectional and electric current density on magnetic field intensity had also designed and calculated. The design and numerical analysis of wedge pole electromagnet were conducted which adopted the finite element simulation and optimal design method. The magnetic induction intensity for the wedge pole electromagnet in different positions of the air gap had analog calculated. The simulated and test results for distributing magnetic field can be well corresponded by considering the effect of eddy loss, material and machining errors of electromagnetic. The result indicated that the method of simulation is correct and practical. The method provides a reliable simulation analysis and empirical data for the design of non-uniform magnetic field.
Study on Hybrid Vehicle Regenerative Braking Control Parameters Affecting to Vehicle Performance Analysis and Simulation
Authors: Zhang Zhong Wei
Published: September 2013

In the hybrid vehicle applied basic research and engineering development, regenerative braking is to reduce energy consumption, reduce emissions and increase the driving range of the important means. According to the different hybrid vehicle driving conditions, how to use regenerative braking control parameters, thereby enhancing the braking energy recovery, is a hybrid car regenerative braking system of the heart. In this paper, the regenerative braking control parameters of the hybrid electric vehicle, by a reasonable choice of regenerative braking of the hybrid vehicle control parameters can increase the regenerative braking energy recovery, for reducing fuel consumption and maintain SOC are benefits. Computer Numerical simulation and simulation results show that the regenerative brake control parameters for hybrid vehicle fuel consumption and greater impact on the SOC, and the regenerative braking may affect the minimum speed limit of the regenerative braking effect, the lower the minimum speed limit the greater the braking energy recovery, thesis research is regenerative braking hybrid vehicle control parameters selected to provide a reference.
The Development of Detection System for Three-Dimensional Alternating Electromagnetic Radiation
Authors: Guan Ze Piao , Chen Shao Bo , Zhang Zi Qiang , Bao Neng Sheng , Lu Zhi Peng , Deng Meng Yang , Cheng Gang
Published: September 2013

Medium frequency induction heating is a kind of energy-saving heating method. Now it has been applied to industrial heating craft, and it reveals that it has wide application prospect. However, due to the problem of electromagnetic radiation, it is extremely necessary to do some detection and protection. Based on this study background and according to the standards of EN62233:2008 Measurement Methods for Electromagnetic Fields of Household Appliances and Similar Apparatus with Regard to the Human Exposure in European Union, the guidelines of ICNIRP (the abbreviation of International Commission for Non-Ionizing Radiation Protection) with the international authority are adopted on the protection standards of electromagnetic field. And a new detection system for three-dimensional alternating electromagnetic radiation has been developed, and is used to detect electromagnetic radiation generated in industrial medium frequency induction heating. In the laboratory test, the precise instrument imported in Germany was a comparison of the equipment. And when testing the same heating object, the test results had better consistency between the precise instrument and the new detection system. On the basis of test requirements in EN62233, a comprehensive value of electromagnetic field intensity has been gotten after the superposition of every effective harmonic component in electromagnetic field, and the prompt of exceed standard is given in the paper, which gives a viable reference and guidance for electromagnetic radiation detection of medium frequency induction heating. After experimental debugging and system calibration in the laboratory, the detection system is running stably and accurately, and reaches the design requirements.
The Design and Simulation of the Magnetic Field Formation Components Based on the Technology of Electro Permanent Magnet
Authors: Yang Sheng Qiang , Li Wen Hui , Chen Hong Ling , Guo Jin Yu
Published: September 2013

As a typical kind of surface finishing technology, magnetic abrasive finishing has unique advantages in finishing effect, efficiency and application, it occupies a very important position and has huge potential application value. As the core component of the magnetic abrasive finishing, the magnetic field formation components have a direct impact on the finishing effect and efficiency. Electro permanent magnetic field formation components used in magnetic abrasive finishing are put forward based on the characteristics of electro permanent magnet and its application in crane and clutch. Analyzing the main performance and characteristics of the magnetic filed formation components and determining the overall scheme according to the total requirements of magnetic filed formation components. Analyzing the feasibility of the electro permanent magnetic filed formation components through the simulation and then forming the design method to further promote the industrialization process of magnetic abrasive finishing.
Research and Development of Ultrasonic Testing Computer-Aided Process Planning (UTCAPP) Based on Standard
Authors: Zhang Ji Tang , He Hong Bo , Tan Chao
Published: September 2013

Aiming at the problems existing in the development of ultrasonic testing computer-aided process planning (UTCAPP), "UTCAPP based on the testing standard" was put forward, which brought the technology to not only better meet the actual needs of ultrasonic testing process design, but also greatly simplify the complexity of the problem and reduce the difficulty of development. In this paper, on the basis of in-depth study of the relationship between the ultrasonic testing standards and process planning, a UTCAPP system is developed through SQL2005 and VC++ 6.0 with artificial intelligence method for establishing the knowledge base and inference mechanisms.
Research on Control Algorithm of Electric Loading System
Authors: Zhang Xiang , Wang Guang Lin , Pan Xu Dong , Xie Hai Bing
Published: September 2013

The disturbance torque which is caused by the interference of the motor position has observably impact on accuracy of the loading system. According to unstable loading channel and disturbance torque, this paper use a complex control algorithm of differential forward PID control and feed-forward compensation. At the end of this paper, the simulation analysis results show that the feed-forward compensation can observably eliminate the influence of the disturbance torque, and improve the accuracy of the loading system.
Study on Small Power BLDCM Drive System
Authors: Wang Zhong Xian , Chai Feng , Wei Yong Geng , Song Yi Lin
Published: September 2013

According to the voltage balance equation, the paper deduces the mathematical model of BLDCM on the basis of analyzing the operation principle. In SIMULINK environment, the BLDCM ontology module is built by adopting the combination of BLDCM state equation with S function method. The built motor ontology module proves to be accurate and reasonable through the analysis of the simulation waveform, which helps to analysis BLDCM electronic commutation, etc. Again taking LM621N as commutation control chip, using PIC microcontroller output variable frequency square wave, and through external input device to adjust the square wave frequency, thus realizes the control of motor speed. A brushless dc motor drive with circuit protection functions is designed by the method of combining hardware and software. Not only the motor work situation of ontology is intuitively reflected, and the development cycle is shorted.
Study on the Numerical Simulation of Femoral Injury
Authors: Chen Ruo Meng , Aiyiti Wurikaixi , Wang Juan
Published: September 2013

According to the numerical simulation of femoral injury, this paper created femoral finite element model from medical image of CT scan, simulated the deformation and stress distribution of femur under complex stress, explored the application of digital bone scientific for femoral injury, analyzed the characteristics of stress distribution on bone under complex loads with the medical image reconstruction technology and the finite element numerical simulation technology, and it can play a guiding role in the research on the injury mechanism of femur under complex loads.
Study on Exhaust Diffusion Control in Urban Trunk Intersection
Authors: Yang Qing , Huang Mei Mei
Published: September 2013

With vehicle population increase, urban trunk traffic flows augment significantly. Traffic environmental problems are become progressively severe challenge, such as congestion, emissions, and photoacoustic pollution. In view of exhaust pollution diffusion problems in urban trunk intersection, this article took North Bayi Street - South Bayi Street in Jinhua as case, carried out traffic surveys of trunk along, tested vehicle exhaust pollutants concentration of intersections, analyzed the exhaust diffusion characteristics of trunk along during the early peak, evening peak and working hours on workday, and proposed relevant emission control measures. Traffic flow in this urban trunk was about 860-3060 pcu/h, and CO was the main pollutant in the exhaust emissions. CO and NO2 diurnal variation ranges were 3.23-14.2ppm and 0.1-0.71ppm. Intersection 4 (South Bayi Street - West Shuangxi Road) with the maximum average concentration of exhaust pollutants along trunk, diurnal variation of peak period were distributed in morning, evening and noon hours, and the evening peak was the maximum. Under the same conditions, exhaust pollutant concentration raised with the traffic increasing in a linear positive correlation. Traffic management measures could control vehicle exhaust diffusion concentration and spread range in the intersection, such as using new clean energy, improving existing fuels, bettering whole road network emissions, and increasing the green rate around intersections.
Laser Transmission Joining of PC and POM Process: A Finite Element Simulation
Authors: Chen Hao , Gao Yang Yang , Wang Xiao , Li Pin , Huang Chuang , Liu Hui Xia
Published: September 2013

In this paper, the process of laser transmission joining (LTJ) of polycarbonate (PC) and polyformaldehyde (POM) which are thermoplastic plastics is investigated through a finite element (FE) simulation. Firstly, a 3D thermal model is developed with a moving Super-Gaussian heat source based on the ANSYS parametric design language APDL and the distribution of the temperature field is obtained. Then the effect of process parameters namely laser power, scanning speed and spot diameter on the joint width is analyzed. At the same time, the calculated joint width is achieved. Finally, the curves of calculated results are compared with the curves of experimental results. The comparison shows a good agreement between them which shows that the FE model is reliable. This lays the foundation for reducing experimental times, designing of experiments based on FE simulation and optimizing process parameters.
MATLAB-Based Vehicle-to-Vehicle Intelligent Lane Changing Model and Computer Numerical Emulation
Authors: Yu Xue Cai , Jiang Wei
Published: September 2013

Lane changing is the common behavior when cars are running. It will produce traffic conflict, reduce the efficiency of road system, and lead to malignant traffic accidents. Based on the analysis and evaluation of circular, cosine type, constant lane migration type and ladder lane transformation type, considering the driver behavior, vehicles control and dynamic constraints and thinking the obstacles as an infinite number of circles to idealize them, this paper establishes polynomial in horizontal and vertical directions respectively to indicate the position of vehicle, obtains the lane changing trajectory by testing whether the distance between circles meet some conditions, builds polynomial for the safe lane changing trajectory and real-time dynamic optimal distances between vehicles, and then utilize the MATLAB as the simulation tool to make experiments in various cases. Simulations and experimental results show that the method given in this paper to calculate the vehicle safety lane changing trajectory in the case of high-speed vehicle is feasible, effective and can give quickly safety lane changing distance.
Working Mechanism of Brake Unit on Railway Vehicle and its MBD Simulation Experiment
Authors: Qu Bao Zhang , Liu Yu , Lu Bi Hong , Zhang Yu , Zhang Hong Bo
Published: September 2013

The safety and reliability of railway vehicle braking system is put forward higher requirement for railway speed increasing. Compared with domestic product, foreign disc brake unit has obvious advantage on compactness of structure, stability of braking pad friction coefficient, braking power, safety and reliability etc. Thus, the research has theoretical significance and engineering value. Firstly, the working principle of disc brake unit is obtained by performing spatial mechanisms analysis of some imported disc brake unit and adjuster structure, then using MBD (Multi-body Dynamics) simulation software, by importing the geometric model of brake unit into RecurDyn, to make preprocess of simplifying and merging and add constraints and contact relation, driving control functions, etc, finally to establish a simulation experiment model. The working characteristic of the brake unit and adjuster's displacement curve of clearance compensation is obtained through the braking and releasing simulation results of braking pad before and after wear out. The research results provide a method based on virtual prototype for analyzing and validating working mechanism of disc brake unit.
Mechanical Analysis and Structural Optimization of the Parabolic Trough Solar Collector
Authors: Liu Jian Ping , Ye Bang Yan , Xun Guan , Shi Ya Ping
Published: September 2013

Parabolic trough solar thermal power generation system is always restricted by high drive torque, low thermal efficiency and high investment cost. In this paper, the parabolic trough solar collector in a solar energy application base is taken as the research object and FEM was used to realizing its structural light-weighting design. The structural overall performance is improved to lay a foundation for innovating drive mode and expanding the rotation scope. Beginning of the paper, the wind load characteristic was analyzed and its computational formula was provided the magnitude of wind load was computed; then, the static performance of the solar collector was analyzed by using ANSYS Workbench and the worst working condition of each static characteristic was confirmed to service for the later structural optimization; last, the overall optimization scheme of the solar collector was put forward, the position of the reflectors supporting point and the structure of the solar collectors cantilever was optimized.
Electrode Properties of Defect-Introduced Graphenes for Lithium-Ion Batteries
Authors: Lee Wonk Yun , Suzuki Shinya , Miyayama Masaru
Published: September 2013

Electrochemical properties of defect-introduces graphenes for lithium ion batteries were investigated. Graphene sheets (GSs) were prepared from graphite through treating with oxidizing agent followed by rapid thermal exfoliation. Defect concentration was controlled by selecting the number of times of oxidation of graphite. GSs electrodes derived from 1, 2 and 3 times-oxidized graphite oxides exhibited a high charge capacity of 1250, 1790 and 2310 mAh g1, respectively, at the 20th cycle at a current density of 100 mA g1. The enhanced capacity is assumed to be due to additional lithium storage sites such as defects and edges.
Preparation and Characterization of Mesoporous Silica and Lithium-Ion-Conductive Halocomplex Salt Composite
Authors: Tomita Yasumasa , Morishita Makoto , Okada Takayoshi , Sahara  , Ichikawa Atsushi , Ishimaru Shin’ichi , Kohno Yoshiumi , Maeda Yasuhisa , Kobayashi Kenkichiro
Published: September 2013

Composites of mesoporous SiO2and LiAlCl4were synthesized, and the change in ionic conductivity due to the formation of the composites was investigated. The electrical conductivity of the composite with the SiO2: LiAlCl4of 2 : 3 was the highest with a value of 2 x 10-6S/cm at room temperature. A higher order of conductivity was observed for the composite compared to the non-composite LiAlCl4. In addition, it was found that the conductivity of the composites depends on the pore size of the mesoporous SiO2.
Oxygen Diffusion in Rare-Earth Doped BaTiO3 Ceramics
Authors: Sakaguchi Isao , Hirose Sakyo , Furuta Tomohiro , Watanabe Ken , Kageyama Keisuke , Hishita Shunichi , Haneda Hajime , Ohashi Naoki
Published: September 2013

The effect of the surface preparation in samarium doped semiconducting barium titanate [(Ba1-xSmx)TiO3] ceramics with (Ba, Sm)/Ti ratio of 1.000 was studied by means of isotope tracer technique using a secondary ion mass spectrometer. The surfaces of specimens were prepared with the chemical mechanical polishing (CMP) with colloidal silica slurry or the mechanical polishing (MP) with diamond paste. The oxygen diffusion coefficients obtained in the CMP samples were small compared to those in the mechanical polished samples. This fact suggests that the surface prepared with CMP has less oxygen defect concentration. Moreover, it was also indicated that high temperature treatment over 1000 °C is required for annihilation of defects formed by MP. The oxygen diffusion study used CMP sample brings the useful information on the oxygen defect chemistry in Sm doped BaTiO3.
Fabrication of Bismuth-Based Zinc Oxide Varistors with High Varistor Voltage by Addition of Tin and Yttrium Oxides
Authors: Tokoro Yosuke , Watanabe Takayuki , Sato Yuuki , Yoshikado Shinzo
Published: September 2013

The effects of the addition of tin oxide (SnO2) and yttrium oxide (Y2O3) to bismuth (Bi)-manganese (Mn)-cobalt (Co)-silicon (Si)-chromium (Cr)-nickel (Ni)-added zinc oxide (ZnO) varistors (a basic varistor) on the varistor voltage, resistance to electrical degradation, and leakage current were investigated. The addition of SnO2increased both the varistor voltage and the resistance to electrical degradation. However, simultaneous addition of both SnO2and Y2O3increased the varistor voltage but the resistance to electrical degradation deteriorated. ZnO varistors with varistor voltage over approximately 520 V/mm, excellent resistance to electrical degradation, and low leakage current could be obtained by adding SnO2with SnO2-to-ZnO molar ratio of approximately 1:10 to the basic varistor.
Effects of Thermal Annealing for Barium and Silicon-Added Bismuth Based Zinc Oxide Varistors on Electrical Properties and Grain Boundary Structure
Authors: Kubota Atsuko , Sato Yuuki , Yoshikado Shinzo
Published: September 2013

In order to fabricate varistors with low varistor voltage, the effects of thermal annealing of CoMnBaSi-added Bi based ZnO varistors on electrical properties and the grain boundary structure were investigated. The varistor voltage for the BiCoMnBaSi-added ZnO varistor decreased in half by thermal annealing for a short time. The resistance to electrical degradation was most improved by the addition of SiO2and thermal annealing for 1020 min. It is suggested that the composition of Bi and Si in the sheet-like deposit is changed by varying the annealing time and the resistance to electrical degradation is improved by both addition of SiO2as well as thermal annealing for short time.
Preparation of Barium Titanate Nanoperticles with Necking Structure/Polymer Complex and their Dielectric Properties
Authors: Tsukamoto Shuhei , Fujii Ichiro , Nakashima Kouichi , Takei Takahiro , Kumada Nobuhiro , Wada Satoshi , Suzuki Tohru S. , Uchikoshi Tetsuro , Sakka Yoshio
Published: September 2013

Barium titanate (BaTiO3) nanoparticles were prepared by a 2-step thermal decomposition method using nanooxalate particles. BaTiO3 nanoparticles were characterized using various methods. Accumulations were prepared by electrophoresis deposition method using the obtained BaTiO3 nanoparticles. They were performed necking structure by a solvothermal method. Polymer was infiltrated into the accumulations in vacuum to prepare a polymer film capacitor.
Preparation of BiFeO3-BaTiO3 Based Thick Films by Screen Printing
Authors: Futakuchi Tomoaki , Kakuda Tatsunori , Sakai Yuichi
Published: September 2013

0.67BiFeO3-0.33BaTiO3thick films were prepared by screen printing pastes prepared by kneading the 0.67BiFeO3-0.33BaTiO3powder in a three-roll mill with an organic vehicle. The thick films were fired with Pt bottom electrodes and ZrO2substrates to investigate the influence of firing temperature. The microstructures and ferroelectric properties of the thick films were examined and compared with the bulk ceramics. A remanent polarization of 32.0 μC/cm2and coercive field of 28 kV/cm were obtained for a thick film with the addition of 0.5 wt% MnO that was fired at 1050 °C.
Fabrication of Lead Zirconate Titanate Thin Films by Inkjet Printing
Authors: Shimofuku Akira , Machida Osamu , Takeuchi Atsushi , Akiyama Yoshikazu , Ohta Eiichi
Published: September 2013

In this study, a finely patterned lead zirconate titanate (PZT) film is fabricated by a combination of inkjet printing (IJP), chemical solution deposition (CSD), and surface energy controlling technology. The PZT film, which can be used as an actuator, has enough thickness after iterating the set of surface treatment, inkjet deposition, and baking. We confirmed the electrical characteristic of this film and drop ejection from inkjet head using it.
Development of Characteristic Points Recognition and its Application in Cloth Hot-Beads Processing
Authors: Zhu Chuan Min , Zhang Heng , Xin Hua Jun
Published: September 2013

The key problem that affects the cloth hot-bead (CHB) accuracy and efficiency is positioning of CHB. Feature points were found out through analyzing the characteristic of the fabric and computer image processing (CIP) technology. The technological process was determined by those feature points, which were considered as reference to the origin for CHB process. A program is written by Visual Basic (VB), and the running results prove the good feasibility and practicability of the research methods.