bluuebunny/crossref_metadata_2025 huggingface dataset:
Thermal Power Plant Bidding Strategies IDSS Analysis and Design
Authors: Sun Hong Fei , Hou Wei , Wang Yan Yan , Lu Rui Ling
Published: July 2013

The bidding decision-making of power plant was a complicated system engineering which had high complexity and real-time, so power plant must rely on the support of information technology to complete the bidding. Therefore, how to use all kinds of advanced information technologies had become one of topics which broad power enterprises must face. This paper established a kind of intelligent decision support system (IDSS) which was based on multi-agent intelligent decision support system and combined with the data warehouse, data mining and on-line analysis processing. Compared with the former information management, IDSS had so many advantages in auxiliary support for decision-making. If it was applied to power plant bidding strategies or other semi-structural and unstructured problems in power market, it would provide good auxiliary support for them.
Chemical Grafting of New Poly(Aminophenyl Bornoic Acid) Chains onto the Surface of Silica Nanoparticles
Authors: Chang Byung Hun , Lee Se Hee , Gopalan Anantha Iyengar , Lee Kwang Pill
Published: July 2013

In this report, the chains of poly (aminophenylbornoic acid) (PAPBA) were grafted onto the surface of silica nanoparticles to obtain Si-g-PAPBA. Si-g-PAPBA was characterized through field emission scanning electron microscopy (FESEM), fourier transform infrared (FTIR) spectroscopy, UV-Vis spectroscopy and thermogravimetric analysis (TGA). Grafting of PAPBA chains onto silica surface was confirmed by TGA and FTIR spectroscopy.
Vibration of Functionally Graded Material Plates with Cutouts & Cracks in Thermal Environment
Authors: Rahimabadi Ahmad Akbari , Natarajan Sundararajan , Bordas Stephane Pa
Published: July 2013

In this paper, the effect of a centrally located cutout (circular and elliptical) and cracksemanating from the cutout on the free flexural vibration behaviour of functionally graded materialplates in thermal environment is studied. The discontinuity surface is represented independent of themesh by exploiting the partition of unity method framework. A Heaviside function is used to capturethe jump in the displacement across the discontinuity surface and asymptotic branch functions areused to capture the singularity around the crack tip. An enriched shear flexible 4-noded quadrilateralelement is used for the spatial discretization. The properties are assumed to vary only in the thicknessdirection. The effective properties of the functionally graded material are estimated using the Mori-Tanaka homogenization scheme and the plate kinematics is based on the first order shear deformationtheory. The influence of the plate geometry, the geometry of the cutout, the crack length, the thermalgradient and the boundary conditions on the free flexural vibration is numerically studied.
Fatigue Multi-Cracks Growths in Plates Using J-Integral Approach with a Developed Home FEM Software
Authors: Hosseini-Toudeshky Hossein , Mohammadi Bijan , Saniei Pooya
Published: July 2013

In this paper multiple fatigue cracks propagation are simulated in two-dimensional plates. Since re-meshing the cracked bodies in each increment of crack extension is a time-consuming and complicated procedure, numerical simulation of mixed-mode crack propagation with FEM is a difficulty. For this purpose, a FEM software is programmed and mesh refinement in each increment of crack is performed by Delaunay Refinement Algorithm. Using different refinement methods, complex boundaries such as multiple cracks and discontinuities which are closed together are easily refined by this algorithm. Crack propagation path is predicted using domain form of J-integral. Modified tensile stress (MTS) criterion is used to predict the crack propagation path in each increment. Different numerical examples illustrate the validation and reliability of present software.
Modelling of Crack Propagation in Anisotropic Material Using Single-Domain Boundary Element Method
Authors: Ke Chien Chung , Lee Wong Rui , Hsu Shih Meng , Chen Chao Shi
Published: July 2013

This paper evaluates the stress intensity factors (SIFs) at the crack tips, predicts the crack initiation angles and simulates the crack propagation path in the two-dimensional cracked anisotropic materials using the single-domain boundary element method (SDBEM) combined with maximum circumferential stress criterion. Numerical examples of the application of the formulation for different crack inclination angles, crack lengths, degree of material anisotropy, and crack types are presented. Furthermore, the propagation path in Cracked Straight Through Brazilian Disc (CSTBD) specimen is numerically predicted and the results of numerical and experimental data compared with the actual laboratory observations. Good agreement is found between the two approaches. The proposed BEM formulation is therefore suitable to simulate the process of crack propagation. Additionally, the anisotropic rock slope failure initiated by the tensile crack can also be analyzed by the proposed crack propagation simulation technique.
Numerical Study on Heat Transfer Enhancement Performence of the Helical Blade Rotors
Authors: Zhang Zhen , Yan Hua , Ding Yu Mei , Guan Chang Feng , Yang Wei Min
Published: July 2013

Based on the advantages of polymer materials over other materials, rotors which are made of the polymer material, are the functional elements of the rotor-assembled strand, and rotate under certain mass flow rate to obtain heat transfer enhancement and online automatic cleaning. The paper carried out numerical studies on heat transfer and friction loss characteristics of the tube fitted with rotors of different spaces. The comparison of the field synergy angle between plain tube and the tube fitted with rotors was also presented in the paper. The numerical data had good agreement with the experimental data. The numerical studies indicated that the field synergy angle of the rotors inserted tube were significantly smaller than that of the plain tube, which validated that the rotors could significantly enhance heat transfer process and had a better comprehensive performance of heat transfer enhancement though extra friction loss was generated. In addition, both the Nusselt number and friction factor of the tube fitted with rotors increased with the increasing space between rotors; the thermal performance factor of the rotors were all higher than 1, which validated the heat transfer enhancement function of the rotors; meanwhile, the thermal performance factor increased with the space between rotors.
Comparative Study of the Low-Temperature Single Step Mixing and Multi-Stage Process Mixing
Authors: Wang Chuan Sheng , Song Guo Zong , Zhao Shu Hong , Ren Na , Wang Dong
Published: July 2013

In this paper, we conduct a comparative experiment of the low-temperature single step mixing and multi-stage process mixing with low temperature single process mixing experiment platform. The experimental results show that the low-temperature single step mixing, compared with the traditional multi-stage process mixing, can save energy of about 13.3% and improve production efficiency of about 200%. The performance of final mixing has a significant increase in Mooney viscosity, the carbon black dispersion, and the physical and mechanical properties of the vulcanized rubber.
Numerical Simulation of the Effect of Particle Random Spatial Distribution on the Thermal Conductivity of Composites
Authors: Zhang Xiao Guang , Ji Ying Jie , Wang Shi Gang , Li Xiao
Published: July 2013

The overall thermal properties of particle reinforced composites are of primary importance for practical applications. Effect of random spatial distribution of sphere particles on the thermal conductivity of composites was numerically studied by ANSYS Workbench Steady-State Thermal analysis module. MATLAB procedure is used to achieve random distribution of particles in composites and to generate a representative volume element (RVE) model. The simulation results indicate that, at the same volume fraction, the random distribution has higher thermal conductivity than the uniform distribution; effect of particles’ spatial distribution on thermal conductivity is greater than volume fraction especially when the volume fraction is between 15% and 35%.
Thermal Conductivity of EPDM Rubber Filled with Modified Nano-AlN
Authors: Ma Lian Xiang , Zhang Na , Yang Gang , He Yan
Published: July 2013

In order to improve the thermal conductivities of composites, AlN are used as thermal conductive fillers of EPDM rubber. The contact angle and surface free energy of AlN and modified AlN are studied. The influence filler amount and the surface treatment of AlN which coated by phenol formaldehyde resin (PF), on the thermal conductivities and mechanical properties of composites material are also investigated. The results show that the surface free energy of modified AlN is lower than unmodified, so the modified AlN are easier dispersion in the matrix. Through the TGA analysis, it can give a quantitative analysis of the surface coating thickness. With the increase of the filler, the thermal conductivities of composites are all on the rise, while the mechanical properties decreased in different degree. The modified AlN have active impacts on the thermal conductivities and harmful to mechanical properties of the filled EPDM rubber.
Contribution of Carbon Black to Thermal Conductivity of Natural Rubber
Authors: Song Jun Ping , Ma Lian Xiang
Published: July 2013

Eight kinds of carbon black filled natural rubber composites were prepared, and thermal conductivity was studied. Acetylene black contributes much to the thermal conductivity of rubber, and tiny loading results in considerable improvement. The conductive carbon black 40B2 is advantageous for the improvement in thermal conductivity of rubber when its loading reaches middle level, and at its middle level, also tiny loading results in much improvement. Most kinds of carbon black for rubber application filled rubber composites have good properties except for N134 and N660, especially the poor contribution of N660. Additionally, in the case of carbon black filled rubber composites, addition of filler may not necessarily benefit the thermal conductivity when filler loading is not much.
Analysis of the Energy Saving Methods in Tire Factory
Authors: Li Zhi Hua , Li Zhou , Ma Tao
Published: July 2013

The energy saving method in tire factory has got more and more attention. In view of the characteristics that the using air capacity is vast and not steady-going in tire factory, the paper analyses and discusses the enactment of the running parameters and the choice of the running mode about the air compressing system, and sets forth the resolving project to raise the running efficiency and achieve the purpose of energy saving.
Flame Retardancy Research of Rubber Powder Modified Asphalt
Authors: Wang Chuan Sheng , Li Xing Wei
Published: July 2013

Based on the tunnel pavement flame retardantcy requirement, flame retardant is added into rubber powder modified asphalt, and then study the flame retardant performance.For flame retardant we chose Decabromodiphenyl ethane instead of decabromodiphenyl ether, silicon is dimethyl silicone oil of flame retardant ,which can improve the flame retardant material performance,we also choose the zinc borate and aluminum hydroxide, through the orthogonal experiment and gray relational analysis method, fire retardant best species composition and dosage level is concluded.
Analysis of Deflection of Short Fiber Rubber Sheeting Mill Roll
Authors: Liu Dong Sheng , Yu Ying , Zong Zhi Wen , Lv Bai Yuan
Published: July 2013

This paper uses the ANSYS software to do the finite element analysis of deflection of short fiber rubber sheeting mill roll. According to the analysis of the mill roll under different horizontal pressure, obtain analysis data of deflection of different mill roll diameters. Then according the technological parameters required to select the most appropriate mill roll diameter.
Coated Composite Crosstie Mold Structure Design Used for Experiment with Inventor, Moldflow and Ansys
Authors: Gong Yu Guang , Zong Zhi Wen , Yu Ying , Lv Bai Yuan
Published: July 2013

Coated crosstie products and counter mold components are created in 3-D model using Inventor software, preparing for CAE analysis. By using Moldflow software , to determine products gate location, filling, packing, cooling, push-out processing, as well as the injection process conditions optimization of simulation analysis to find possible defects, modify and optimize the design, determine the best processing parameters and conditions. Binding using Ansys11.0 software to analyze rail sleeper mold cavity deformation, structure stress, get distribution of property of von Mises stress and displacement vector sum, in the mold cavity on the contact surface. By changing the cavity wall thickness, and other factors to improve the force which it is subjected, providing references to structure optimization of injection mold design. It has been proven that in collaborative application of these three softwares, the design of the injection mold is a very efficient and easy.
Numerical Study of Boiler Feed Water Deoxygenation Using Hollow Fiber Membrane Contactor
Authors: Zhang Xiao Guang , Wang Shi Gang
Published: July 2013

Removal of dissolved oxygen from feed water is a necessary process in power industry. The hollow fiber membrane contactor is more efficient and pollution-free compared with some traditional methods. In this paper, hollow fiber is modeled by random distribution, and Gaussian function N(R, sigma) was used to model the polydisperse out radii of hollow fiber. This paper discussed the influence of different sigma on mass transfer coefficient with fiber packing density ranging from 0.1 to 0.4. It was found that, the effect of different sigma on the logarithmic mean Sherwood number decreased with increasing fiber packing density. When the packing density increased to 0.4, the removal of dissolved oxygen could meet the requirement of power industry, no matter how much value the sigma was. With the sigma increasing, the deviation of max and min Sherwood number from the average value increased gradually, except when the sigma was 0.05. This paper deduces there is a best value of sigma for membrane contactor when the fiber distribution is randomly distributed.
Influence of Helical Grooved Structure on Mixing Process in a Single Screw Extruder
Authors: Wang Jian
Published: July 2013

Mixing performance is an important consideration in polymer extrusion processing. Besides a variety of mixing elements used in the extrusion industry, barrel also plays an important role to improve the mixing performance of the extrusion. The influence of helical grooved structure in inner wall of traditional single-extruder barrel on mixing process was investigated by using numerical simulation. POLYFLOW was used to calculate the 3D isothermal flow fields and mixing process of PVC-R in a single screw extruder with and without helical grooved barrel. Mixing performance of PVC-R in these two different structures was studied comparably. It was found that it could improve the mixing performance by helical grooved structure in the barrel, but a suitable groove depth of the helically grooved barrel should be calculated in order to avoid the extrusion throughput.
New-Type Vacuumizing Flat Vulcanizing Machine Structure Design and Experimental Research
Authors: Guo Lei , Wang Chuang Sheng , Liu Qing Kun , Su Dong Jian
Published: July 2013

It introduces the structure characteristics of a new-type vacuumizing flat vulcanizing machine. With a high degree of automation, high precision products, high production efficiency and the like; this machine can realize the mold’s automatic push-off, openness, turning, ejection and via the experiment, impacts on physical mechanical properties of vulcanized rubber between new-type vacuumizing flat vulcanizing machine and ordinary vulcanizing machine are conducted.
Optimization of the Injection Molding Process Parameters Based on Moldflow and Orthogonal Experiment
Authors: Nie Yong , Zhang Hui Min , Niu Jia Teng
Published: July 2013

This article is using Moldflow analysis and orthogonal experimental method during the whole experiment. The injection molding process of motor cover is simulated under various technological conditions.After forming the maximum amount of warpage of plastic parts for evaluation.According to the range analysis of the comprehensive goal, the extent of the overall influence to the processing parameters, such as gate location, melt temperature, mold temperature and holding pressure is clarified.Through analyzing the diagrams of influential factors resulted from the simulation result,the optimized process parameter scheme is obtained and further verified by simulation.
Experimental Research of Granular Silica Pneumatic Conveying System in Tyre Factory
Authors: Li Yong , Li Hong Jiang , Li Guang
Published: July 2013

Through the experimental research of granular silica in dense phase pneumatic conveying in the tyre plants, the characteristic parameters of granular silica pneumatic conveying have been obtained. By adjusting the main and bypass pipe pressure values, the stable plug flow conveying of granular silica can be realized, which considerably reduces the broken ratio of the granular silica. The plug flow conveying will be even more stable, when the opening blow tank pressure is set at zero. Additionally the same research has also proven that bypass valves open pressure in the end of pipeline will affect the stability of the entire conveying system as well.
The Finite Analysis and Optimization of Head Runner of Rubber Sheeting Extruder
Authors: Yu Ying , Wang Jia , Gong Yu Guang , Lv Bai Yuan
Published: July 2013

In this paper, Φ120 rubber sheeting extruder is used as an example, It analyses reversely die shape through a given product shape, analyses the distributions of the velocity field and pressure field by POLYFLOW, and carries out the finite element analysis and structural optimization design of head runner.
The Gas Barrier Property and Structure of Rubber Nano-Laminated Composites
Authors: Qin Liu , Liu Yue Xing , Ding Yu Mei , Jiao Zhi Wei , Yang Wei Min
Published: July 2013

This article mainly introduced the structure and the principle of gas barrier of the rubber nano-laminated composite materials with alternating layer structure and excellent gas barrier property. Due to the fact that the barrier resin material was dispersed in matrix rubber evenly and parallelly in nanometer, the phase structure lead to the existence of multipath movement and deep penetration in the composite materials, thus the permeability coefficient of composite materials were reduced significantly. So the rubber nano-laminated composite materials owned excellent gas barrier performance.
Experimental Study on Tire Curing Process by Employing Variable Temperature Method
Authors: Li Qing Ling , Du Dong Xing , Yang Guang Zhi , Li Tao
Published: July 2013

Experimental studies are carried out for various vulcanization processes in a 11.00 R20 S815 tire by employing variable temperature method. The temperature variation histories inside the tire are recorded and the corresponding vulcanization degrees are obtained. It is found that the variable temperature process can not only save the vulcanizing time, but also improve the tire internal vulcanization uniformity and the equipment utilization efficiency.
Application of a New Twin-Screw Extruder to the Waste Tire Regeneration
Authors: Guo Lei , Liu Qing Kun , Wang Chuan Sheng
Published: July 2013

This paper uses a new twin-screw extruder for regeneration of waste tire crumb rubber, discusses the influence of screw speed and reaction temperature on the physical and mechanical properties of reclaimed rubber. Experimental results show that different screw speed and reaction temperature has a great impact on the physical and mechanical properties of the reclaimed rubber. When controls screw speed in the 60 ~ 90 r / min, reaction temperature at 170 to 210°C,the regeneration effect is the best. At this time, the physical and mechanical properties of reclaimed rubber, such as tensile strength, tear strength and elongation at break rate, is the best.
Numerical Simulation and Analysis of 3D Flow Field in New Different-Speed Mixer
Authors: Zhang Ya Lan , Wu Yun
Published: July 2013

A simulation model of the flow field in the different-speed mixer was built based on UG software in this paper. The characteristics which including the pressure value, flow rate and maximum shear stress were analyzed by the ANSYS-Fluent, as well as the variation of the material form. The results of the analysis provide theoretical basis for the reasonable structure design and performance analysis of the different-speed mixer.
Influence of Relative Humidity on the Moisture Evaporation of Monocomponent Water-Borne Sealer for Wooden Furniture under Forced Drying Condition
Authors: Wang Meng , Lu Ze Guang , Jia Wan Da , Zhao Huai Yan , Wang Feng Shuang
Published: July 2013

The moisture evaporation amount and drying velocity of monocomponent sealer on the maple-veneered panels as base materials, under the drying conditions of constant temperature of 30°C and relative humidity varied from 30% to 70%, were measured in this study. The results indicated that the moisture evaporation amount increased, and drying velocity decreased with drying time under the same relative humidity, while the moisture evaporation amount decreased with the increase of relative humidity. The drying velocities were remarkable different under different relative humidities. During the same period of drying time, the difference degree of moisture evaporation amount within the relative humidity range of 30% to 50% was smaller than that within the relative humidity range of 50% to 70%.
Experimental Study on Falling Process of Melt Electrospinning Fiber
Authors: Liu Yong , Liu Zhao Xiang , Deng Liang , An Ying , He Xue Tao , Zhang You Chen , Yang Wei Min
Published: July 2013

As one directly method to produce nanofibers, electrospinning has been studied extensively. However, the buckling phenomenon is not understood completely especially to the process of melt electrospinning. The authors carried out a series of experimental study on this phenomenon with high speed video. This is the first article of the research, in which we defined three stages to the whole spinning process according to the time. The specialties of each stage were list out. The falling process was divided into straight-line movement, spiral swinging, and deposits on the collector three sections. The buckling reasons were provided.
Research on Properties of AROPOL G102 / Clay Nanocomposites
Authors: Lin Guang Yi , Mu Xue Chen , Wang Xian Lin , Wang Chuan Sheng
Published: July 2013

Unsaturated polyester resins are widely used in the manufacture of fiber reinforced plastics and shipbuilding industry. Their undesirable mechanical property may bring about disadvantages. The nanoparticles were added to the polymer material, which will strengthen the performance of the polymer material. AROPOL G102 / Clay Nanocomposites were prepared by magnetic stirring apparatus at room temperature. The result showed that nano-montmorillonite can effectively increase the mechanical property of the material.
Hot Probe Method for Measuring Thermal Conductivity of Copper Nano-Particles/Paraffin Composite Phase Change Materials
Authors: Zhou Yan , Wang Yan , ZHang Jin Hui , Li Qing Ling
Published: July 2013

Hot probe method for measuring thermal conductivity has the advantages of easy operation, time saving, high accuracy and low poison. In this study, experimental device with high precision for measuring thermal conductivity by hot probe was designed. The measurement error of experimental device is less than 2.4%. This experimental device was used to measure thermal conductivities of pure paraffin (octadecane) and copper nano-particles/octadecane composite phase change materials (PCMs). The composite PCMs were prepared with copper nano-particles doping levels of 0.1, 0.2, 0.5, 1and 2 wt%. The experimental results showed that hot probe method is an effective method to measure the thermal conductivities of PCMs; copper nano-particles added into paraffin can improve thermal conductivity effectively. What’s more, the thermal conductivities of PCMs increase with the growing mass fraction of copper nano-particles.
Defects Analysis of Liquefied Gas Tankers
Authors: Hang Bai Lin , Li Wen Chao , Huang Wen Bo
Published: July 2013

To a great extent，traffic accidents of liquefied gas tankers are caused by the defects inside the tankers themselves. Analyzing what causes the defects, and putting forward the corresponding prevention measures, to reduce accident risk, is of great significance. In this paper, the research object is a defective liquefied gas tanker in a propylene factory in Shandong. The defects in actual transportation process containing weld joints defects and anti-wave plates are analyzed, and the corresponding solutions are put forward on the basis of the literature analysis. The results show that the main causes of the defects are that the manufacture and processing did not correspond with design data. The defects repair of the liquefied gas tanker should be performed by qualified service units after specific repair plan and relevant formalities are put forward. The repaired liquefied gas tanker should be inspected qualified by the inspection organizations.
SCF Preparation of Drug Particle Using Size Adjustable Nozzle
Authors: Hu De Dong , Ding Ming Lei , Zhu Guang Wei , Wang Wei Qiang , Zhao Zhi Quan
Published: July 2013

The preliminary study of the three-channel size adjustable coaxial nozzle which was used in supercritical fluid particles preparation technology was given in this paper, what's more, we considered the influence of some experimental conditions on the preparation product, such as pressure, nozzle size. According to the problem of reunion of cefuroxime axetil particles appeared in the preparation process, this paper elaborates the mechanism of reunion, and adopted the method of adding surfactants to solve the reunion problems effectively.
Study on the Influences of Ultrasonic Conditions on the Dispersion of Multi-Walled Carbon Nanotubes in Reinforced Epoxy
Authors: Ding Yu Mei , Wang Jian Qiang , An Ying , Shao Jian Bo , Ma Kun , Zhang You Chen
Published: July 2013

Absrtract. In this paper, the method of ultrasonic vibration in preparation of multi-walled carbon nanotubes(MWCNTs)/epoxy resin composites was studied. Suspension specimens of MWCNTs/epoxy resin solution prepared by different ultrasonic conditions were compared to find out the influences of operating conditions on dispersion properties. In this study, transmission electron microscopes(TEM) were used to characterize the morphology of the blends and suspension stability was used to evaluate the stability of blends. The results showed that ultrasonic power, ultrasonic time and material quantity have great effect on the dispersion of MWCNTs in epoxy resin solution. Increasing ultrasonic power and time can improve dispersion of MWCNTs, and decreasing material quantity within an appropriate range was helpful to disperse MWCNTs into epoxy resin solution. The results of suspension stability were very similar with TEM results, which demonstrate that suspension stability of MWCNTs/epoxy resin blending could be used as an assistant method to characterize the dispersion of MWCNTs in epoxy resin.
Air Dynamics Characteristics Analysis of Air Splicer
Authors: Wang Jiang Zhong , Zhou Guang Zhen , Li Li , Chang De Gong
Published: July 2013

Air splicing technology is the key technology to realize high speed, high quality and automatic winding in modern textile industry. However the current research of splicing mechanism is still in qualitative analysis, theoretical and experimental exploration stage. By modern computational mechanics method, with the air flow analysis results in different structures and shapes of splicer chamber, the air flow patterns under high pressure are determined; and the optimized structural characteristics of the splicing chamber are obtained in this paper. The results provide theoretical support on the innovative splicer chamber design, promote the development of the new air splicing technology, create important practical value, and provide the feasible means and methods in the air splicer theory research and optimization design.
Design of Multi-Grade Centroid Adjusting Mechanism for Simulation Inspection Device
Authors: Sun Li Xia , Lv Xiang Yan , Zhang Zhan Guo , Jiang Sheng Yuan , Xu Yan
Published: July 2013

In order to simulate the adaptability and the fluctuation resistance ability of simulation inspection device and hanging ladder on ground, simulation inspection device and multi-grade centroid adjusting mechanism are designed in this paper. In the process of centroid adjusting, modification of the centroid position is transformed by means of mathematical model into a certain centroid adjusting mechanism, which is relative to displacement of Y Axis in calculating coordinate system and angle alternation between the adjustable centroid lever and the main rocker. The results show that the calculation is in good agreement with the analysis.
Axial Mechanical Characteristics Analysis of Elongational Pneumatic Artificial Muscle
Authors: Zhang Gui Lan , Geng De Xu
Published: July 2013

This paper has introduced the structure of elongational pneumatic artificial muscle, analyzed axial mechanics characteristics of elongation artificial muscle, established the axial mechanics model, verified the credibility of the model through the experiment.
Jacket Damage Identification Based on ANSYS Design Optimization
Authors: Luo Xiao Bin , Zhang Yang
Published: July 2013

Jacket is the fundamental structure of offshore platform, supporting the deck. It is a space frame truss consisting of hollow legs (pipes) and horizontal and vertical rods used to connect legs. Traditionally, damages of jacket must be detected by diving into various depth which would costs a lot. In this article, ANSYS was used to simulate the identification of damage locations. Element Parametric finite-element models which demonstrated several common damages such as corrosion and bending by changing physical and geometric parameters were analysed. It was found that analysis of node vibration data far from the damage location could identify the damage location with ANSYS design optimization.
The Effect of Ni-P Alloy Pre-Plating on the Performance of Ni-P/Ni-P-PTFE Composite Coatings
Authors: Hou Jun Ying , Wang Song Rui , Zhou Zhi Wei
Published: July 2013

In order to obtain more excellent performance of composite coating, a layer of Ni-P alloy was plated firstly, then Ni-P-PTFE composite coatings was plated. If plating time ratio of electroless plating Ni-P alloy and Ni-P-PTFE composite plating was properlly controlled, performance of pure Ni-P-PTFE composite coating could be improved. The study have shown that the total plating time is 2 hours, and the plating time ratio is 1:1, and good bonding strength with the substrate, right hardness, low friction coefficient, good corrosion resistance of Ni-P /Ni-P-PTFE composite coatings have been obtained.
Study of the Mathematical Model for Online Predicting Mix Mooney Viscosity on the Rubber Open Mill
Authors: Zeng Xian Kui , Yang Chang He , Song Ze Shuai , Zhao Shu Hong
Published: July 2013

According to studying the mechanism of open mill mixing in low temperature and its intelligent mixing theory, based on the analysis of the experimental results getting from the self-developed XK-160E type open mill, we established a mathematical model for predicting the mix Mooney viscosity. The inspection and verification of mathematical model results showed that the predicted Mooney viscosity was very close to the practical value indicating a good predictive effect．
Design and Research on Tower Escape Apparatus Based on the Principle of Escapement Mechanism
Authors: Wang Kai Bao , Qin Si Cheng , Liu Ke Min , Chen Xing Long
Published: July 2013

The tower circular escape apparatus based on the principle of escapement mechanism is introduced in the paper. The emergency evacuation device for fire trapped workers can be used in the place of frequent fire, hotels, office buildings, high-rise residential and stores, etc. The velocity of the principal axis can be controlled automatically by the escapement mechanism. The driving force of the escape apparatus comes from the gravity of the trapped workers. The experiment results show that the velocity of the device can be controlled on the operating range. The symmetrical structure can make more persons with different weight escape alternately and the velocity of descend approximate. In the research, the virtual prototype technology was used to analyse the kinematic characteristics of the mechanical system. The feasibility of the scheme design of mechanical system was proved with the simulation analysis results. The equipment has advantages of the structure is compact, safe and reliable, easy to use. The research of tower circular escape apparatus based on the principle of escapement mechanism can be regarded as the reference of the related research.
FEA of Flow Fluid of Six-Wing Synchronous Varying Clearance Rotor
Authors: Guo Lei , Wang Chuan Sheng , Bian Hui Guang
Published: July 2013

The six-wing synchronous varying clearance rotors which have been designed for the mixing of short fiber-rubber composite material have special structure, and considering the characteristic of the short fiber-rubber composite material, the flow situation of mixed rubber is very complex. However, the flow field of the six-wing synchronous varying clearance rotors can be analyzed by ADINA. So, the flow situation and mixing situation of the mixed rubber can be analyzed and judged by the FEA results such as the pressure field, viscosity field, shearing force field and velocity field.
An Anti-Occlusion Algorithm for Object Tracking
Authors: Huang Yi Hu , Chong Hong Lei , Li Zhong Hong , Zhang Yin Ping , Hu Ning , Jia Xi Mei
Published: July 2013

Object occlusion often happens in reality life, so it is easy to cause the loss of tracking object. In order to solve this issue, this paper proposes an anti-occlusion algorithm for object tracking. The algorithm bases on Camshift algorithm and uses the Bhattacharya coefficient to judge whether the target is occluded. When object occlusion happened, the object position of the next frame will be predicted by using Kalman filtering algorithm. The experimental results show that the new algorithm can achieve accurate tracking of sheltered object. The algorithm is less time-consuming and more robust.
Virtual Prototype Analysis for the Manipulator of Punching Machine
Authors: Chang De Gong , Zhou Guang Zhen , Dou Hong Yun , Wang C.C.
Published: July 2013

In this paper, the 3D model was built by the software Pro/E. Virtual Prototype analysis for the manipulator of punching machine was carried out by the software ADAMS. The force, torque and angular velocity were calculated respectively under the step5 driving function condition. Through analysis and comparison, the result shows that the working condition was better when the step5 function was applied. This laid the foundation of the manipulator driving programming.
The Design of Workpiece Hydraulic Clamping System of a Special CNC Machine Tool for Guide Disc
Authors: Yang Ke , Guan Shang Jun , Pan Zhi Yuan
Published: July 2013

This paper mainly describes and introduces the driving principle of hydraulic clamping system of a special CNC machine tool for guide disc and it also makes a meticulous description for how to do the design calculation and model selection to the key components of the hydraulic clamping system. The clamping mechanism can ensure the guide disc’s automatic clamping, making it safe, reliable and able to lower the labor intensity of the operators.
The Study of Feature Extraction Based on the Optimal Threshold Segmentation Algorithm
Authors: Ren Xia , Ma Lian Xiang
Published: July 2013

Image segmentation technology is crucial for feature extraction. In this paper, the traditional thresholding method has been improved, and the optimal threshold segmentation method is proposed by combining the iterative algorithm and mathematical morphology. Through analyzing the target area of image, the scope of the general gray-scale is determined. Based on the image edge and region, fast iterative algorithm is used to choose the optimum threshold as segmentation criteria. Moreover, morphology open computing is applied to the image threshold segmentation. Then the method is used in processing marine oil spill and solar flares. Different experiments of marine oil spill and solar flares based on the method show that this method can not only extract a clearer definition of interesting areas, but also can show a more clear-cut edge.
Numerical Simulation of Counter-Current Flow Field in Double Packing Rotating Packed Bed
Authors: Hu De Dong , Shan Wen Yan , Zhu Guang Wei
Published: July 2013

The rotating packed bed is a new and effective mass transfer equipment. However, because of the complexity fluid flow inside the RPB, the flow experiment are not easy to lead to the deeper understanding on the fluid dynamic in an RPB. To explore the internal flow field distribution of rotating packed bed , the internal flow field in counter-current double packing rotating packed bed was studied. At the same time, the flow field changes in different rotating speed was compared and the liquid distribution between the two layer of packing was performanced.
Research on Simulation Inspection Detector
Authors: Sun Li Xia , Wang Kai Bao , Zhang Zhan Guo , Jiang Sheng Yuan , Jia Jian Bo
Published: July 2013

The structure design problems of simulation inspection detector on ground are researched in this paper. The general design scheme is proposed based on the design task requirements of simulation inspection detector with a synthetic consideration on the requirements of the whole mass and the real grounded force. Detailed design for the concrete mechanical strcture has been carried out. The prototype of simulation inspection detector meets the test requirements, which can also provide important reference for the detector improvement.
The Meshing of the Fan Blade of Scenery Tower Power Generation Device
Authors: Yang Wei Min , Bai Wen Juan , Du Min Min , Shan Ti Kun
Published: July 2013

Usually wind turbine blade number is less, and blade is longer,and which speed is commonly 10-30 r/min,while the miniaturization of scenery tower power generation device of fan blade is not. The device adopts eight blades according to the similarity theory between the wind machine and the steam turbine. By changing its speed can still achieve the transfer of energy and then generate electricity,although blade is short, and the wind area is reduced.In the study of the blade,high quality grid is the key.This paper discusses the fan blade meshing used ICEM CFD in the rotation of the basin.
Finite Element Analysis and Research of Beam Based on Workbench
Authors: Niu Tian Tian , Wang Shou Cheng , Luan Song Nian
Published: July 2013

According to XQ2010 planomiller, three-dimensional physical model is built by using Solidworks software. With the model imported into workbench, the static and dynamic state of beam is analysed. The features of stress and deformation are observed under ultimate load. Its six modes of vibration are extracted for confirming the characteristic of beam in modal analysis.
The Experiment Measuring Method of Polymer Melt Bulk Modulus by PVT Principle
Authors: Xu Hong , Han Ke , Liu Ying , Wu Da Ming
Published: July 2013

Introduced a experiment measuring method of polymer melt bulk modulus. This method based on the PVT reciprocity principle of polymer melt. Depending on liquid attribute of polymer melt, which means pressure changing caused micro variety of volume of certain quality melt in sealed container, polymer melt bulk modulus under the different temperature and pressure could be measured. According with the Polymer Free Volume Theory, the result proved the scientificity of this method.
Fabrication and Properties of a New Type Micro Super-Capacitor
Authors: Yin Ya Jiang , Wang Xiao Feng , Lu Wu Shuang , Li Xiang Yu , You Zheng
Published: July 2013

A new type of micro super-capacitor with high working voltage, high over loading, small bulk, and low impedance was fabricated by a new process. The hydrous ruthenium oxide powder was prepared in a solution of RuCl3·xH2O and NaHCO3. Different composites loaded with certain amount of carbon black were synthesized with this technique. Super-capacitor performance was assessed via cyclic voltammetry (CV), charge-discharge studies (DC), and impedance analysis (AC). The results show that the capacitance and resistivity of ruthenium oxide materials were dependent on the sample annealing temperature. The materials heated at 300°C exhibit the highest rate capacitance of 1080 F·g-1. Four to six cells of this capacitor was stacked up in series by conductive films in order to achieve higher working voltage. After packaged in resin, charge/discharge studies and impedance analysis were tested via the electrochemical test system. In the research, super-capacitors with a four-layer structure exhibited fine electrochemical characteristics with high working voltage over 5.5 V and low impedance under 1.5 ohm. Also, it had the ability of high-rate discharge performance and considerable large capacitance.
Study on the Mechanism of Rapid Synthesis of Small Grain NaX Type Molecular Sieve with Calcined Kaolin
Authors: Wang Yin Ye , Zhang Hong Wei , Chen Xu , Xiao Yan Hua , Luo Yong Na
Published: July 2013

Small grain X zeolite molecular sieve was synthesized using calcined kaolin and sodium hydroxide directly and crystallization for 3.5h without template agents，directing agents and seed. The products were characterized using the transmission electron microscopy (TEM) and x-ray diffraction (XRD) analysis. TEM observed that the small grains in 70-80 nm size were well distributed. The hydrothermal crystallization products was X zeolite with complete crystal analysised by XRD. Fourier transform infrared spectroscopy (FTIR) characterization showed that the basic structural unit of component in the solid phase of calcined kaolin and X zeolite had no significant change. After an induction phase of calcined kaolin in the hydrothermal system, large numbers of Nanocrystalline of X zeolite molecular sieve were formed and became the growth unit. And then it has turned into the main structure growth mechanism of the X zeolite. Therefore, rearrangement of crystal phase rotating is believed to be the mechanism of calcined kaolin synthetizing X zeolite.
A Low-Power Photovoltaic Maximum Power Point Tracking Circuit for WSNs
Authors: Zhang Gao Fei , Ma Rui , You Zheng , Zhang Zi Chen
Published: July 2013

Currently, most wireless sensor networks (WSNs) are powered by batteries. When energy stored in batteries is exhausted, the life of the WSNs goes to the end. The concept of energy harvesting provides a practical solution to the problem of the energy limitation. In this article, the feasibility and performance of a simple and low-cost analog solar energy harvesting circuit with the function of maximum power point tracking (MPPT) are investigated. The technique provided is based on the approximately linear relationship between the maximum power point (MPP) voltage and the open-circuit voltage of a solar panel under different irradiation levels. Several experiments have been carried out regarding the accuracy and efficiency of MPPT as well as the working process of the circuit. Results show that the maximum power point with different loads can be effectively tracked by the self-powered MPPT circuit, and in the meantime, a stable output voltage can be generated. The efficiency of energy conversion is guaranteed by a commercial off-the-shelf DC-DC chip. The detailed description of the circuit design and the comprehensive analysis of the circuit performance will provide a useful guide for the future applications.
Design and Simulation of Anti-Violent Rocket Engine on Small UAV
Authors: Liu Xing Yu , Guo San Xue
Published: July 2013

Anti-violent rocket on small UAV creatively combines the anti-riot shell with the UAV,utilizing the theory of rocket lanching,realizing that Anti-violent Shell is launched far in the sky.It is significant for CAPF to realize variety of targets battle in the emergency and mission. This paper focuses on sumulation and testing of anti-violent rocket engine on Small UAV,and the flight test-fired experimental of engine is carried on with control system,which demonstrates its feasibility.
Dynamics Research on Electron-Stimulated Desorption of Fluorine from Fluorinated Graphene Surface
Authors: Guo Lei , Chen Xue Kang , Wang Lan Xi , Cao Sheng Zhu , Bai Xiao Hang , Zhang Chao , He Yong Min , Gao Hui
Published: July 2013

The experiment of stimulating fluorine to desorb from fluorinated graphene was carried out in order to make clear the dynamical mechanism of the electron-stimulated desorption (ESD) of fluorine. X-ray photoelectron spectroscopy (XPS) with an electron beam gun accessory was used not only to stimulate fluorine to desorb, but also to characterize the concentration of fluorine after ESD. The concentration of fluorine dropped quickly following electron beam irritation. The desorption cross section of fluorine is about 1.5×10-17 cm2. It was also found that electron beam with low current density did not damage the structure of fluorinated graphene. These results confirm that it is feasible to fabricate all graphene electronics by ESD technology.
Application of Laser Doppler Technique in Detecting the Dynamic Parameter of MEMS Device
Authors: Yuan Guang Min , Yuan Wei Zheng , Liu Yao Bo , Chang Hong Long
Published: July 2013

In order to test the dynamic performance of MEMS devices accurately, the laser Doppler vibrometer was adopted to test the frequency characteristics and surface vibration of the MEMS scanning mirror. The measuring formulas of the object motion velocity and displacement were derived. A kind of MEMS scanning mirror was tested using the established optical testing system. The measurement results show that the resonance frequency characteristic and the transient response characteristic is 269Hz and 60ms respectively which are consistent with the theoretical analysis. The method has significant reference value to the application of the laser Doppler technique.
Combining Micro-Nanotechnology with Atomic Spin Devices
Authors: Dong Hai Feng , Zhou B.
Published: July 2013

In recent year, the sensitivities of atomic spin devices are improved greatly with the realization of spin exchange relaxation free (SERF) regime. Usually the SERF regime is realized using orthogonal beams scheme, i.e. one pump beam to polarize the atoms and the other orthogonal probe beam to measure the polarization. Due to the requirement of four optical windows for the atomic vapor cell, the orthogonal beams scheme has difficulties for micro fabrication. In this paper, we research a new scheme for SERF realization using only one beam, which facilitates the micro fabrication greatly. Furthermore, the fabrication processes of the MEMS atomic vapor cell with two out-of-plane optical windows are designed and performed. In the end, the possibility of increasing the relaxation time by nanotechnology is discussed.
Development of a Nanomanipualtion System for Handling Nanowires
Authors: Zhang Shi Zhong , Rong Wei Bin , Sun Li Ning
Published: July 2013

A compact and versatile nanomanipulation platform and its dirve-control system are being developed. This nanomanipulation sytem is aimed to handle nanowires (NWs) and fabricate nanostructures by NWs in a Scanning Electron Microscope (SEM). The excellent performance of the compact manipulator developed with corase and fine positioning in one unit has been demonstrated, which shows that the resolution is 8 nm and the steps are from 50 nm to 0.8 μm. For the power supply of the manipulator, a three-output driver is designed with a high-power integrated operational amplifier based on a mixed approach of voltage control and current control. The planar push-and-lift handling of NWs is carried out by the use of two tips to demonstrate the capability of the nanomanipulation sytem inside SEM.