bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization Research on Cyclic Waterflooding in Low Permeability Fractured Reservoir
Authors: Yan Wen Hua , Wang La Mei , Wang Da Zhi , Shi Xiao Bo
Published: January 2012

Three cyclic waterflooding programs were designed to compare with the original program of block Bao14 according to the characteristics with residual oil. The results showed that the recovery percentage of three designs increased in different level. The fourth design was best. The stage cumulative incremental oil production was 16.07×104t and recovery ratio improved 2.14% than that of original design
Effect of Ambient Temperature on Three-Shaft Gas Turbine Performance under Different Control Strategy
Authors: Gao Jian Hua , Huang Ying Yun
Published: January 2012

Gas turbine is sensitive to ambient temperature. Different ambient temperature could change the state of the inlet air of compressor and make the gas turbine work in off design conditions. Research the effect of ambient temperature on gas turbine performance is valuable to the long-term safe operation of gas turbine. In this paper, a thermodynamic model of a simple cycle gas turbine which has three shafts was established, and steady-state performance simulation under different ambient temperature was carried out. In the two conditions of 1.0 and 0.35 work states, the effect of ambient temperature on thermodynamic parameters, specific power and thermal efficiency of gas turbine were analyzed. The result shows that: effect of ambient temperature on three-shaft gas turbine is different under different work state, and relevant factors must be considered to select the appropriate control strategy
Modeling, Simulation and Analysis of Mechanical Ruling of Echelle Grating
Authors: Shi Guang Feng , Shi Guo Quan , Song Lin Sen
Published: January 2012

An analytical model based on the slip line field theory and a finite element simulation model based on Deform 3D are set up for mechanical ruling of 79g/mm echelle grating. The theory depth of the diamond tool falling in the grating aluminum got from the analytical model can provide a reference for the simulation model, and the compared groove results of the two models are both acceptable. The dynamic grating ruling simulation and its analysis make it known that the aluminum springback on the groove surface and the bump on the groove top is the main factors of grating groove indexes deviated from theoretical values, which reveals the aluminum nature of elastic-plastic deformation regularity during grating mechanical ruling
Analysis on Vibration Conductivity in Walls of Hydropower House Based on Power Flow Theory
Authors: Xu Wei , Xu Xin Yong , Ma Zhen Yue
Published: January 2012

Basing on the theory of power flow, frequency response analysis was acted on in a hydropower house under dominant frequency with measured data of Three Gorges Station in spiral case and draft tube. Power flow in walls was calculated by APDL procedure and the properties were analyzed. The conclusion is that longitudinal wave is the main method in walls of the powerhouse, energy is reflected and stacked at the top of the walls. Displacement along the river changes and power flow in walls decays obviously. Intensity of vibration origin and distance between the vibration and the wall are both the influencing factors，increasing the stiffness of buttressed walls takes the role of limiting flexural wave and shear wave effect
Frequency Balance Influence to Signal-to-Noise Ratio of Bistable Stochastic Resonance in Signal Smart Regression Recognition Procedure
Authors: Zhao Zi Kai , Hui Guo Hua , Chen Yu Quan
Published: January 2012

Systematic frequency holds great influence to bistable stochastic resonance (BSR) model. In this paper, frequency parameter f0 was investigated to explore the parameter-induced bistable stochastic resonance characteristic according to the former research results. Within a variable frequency parameter f0 range (from 0.01 to 10), a systematic output stochastic resonance emerged with the value change of frequency parameter f0. Systematic output signal-to-noise ratio (SNR) curve shows that the variable frequency parameter f0 could induce stochastic resonance in real-time signal analysis field
Distributed Fieldbus Technology for Generator Excitation System Data Storage Design
Authors: Yin Jing Tao , Du Zhi Qiang , Liu Li Ping
Published: January 2012

In this study is the use of the generator excitation system design parameters for distributed fieldbus technology and real-time data display module record, will transfer to the field bus data processing and real-time storage of a design. Generator current and terminal voltage and other electrical parameters by the CAN bus pass, when a failure occurs, the fault current and other electrical parameters display, and store it to MRAM or FRAM memory, and also through the external communications port to be transferred to PC and other networks. System uses magnetic resistance random access memory, ferroelectric memory extends the storage capacity, so that fault recording function can be achieved; application PIT and RTC, the timing accuracy of a millisecond, improve the recording wave function
Key Anti-Friction Technology Breakthrough in Steel Collars: First Using Electro Slag Remelting in the Second Remelting of HSS Collars
Authors: Liao Yao Tang , Wu Tsung Cheng , Chou Tzu Chuan
Published: January 2012

This is the first time in the steel industry that the steel mill applies the electro slag remelting to high-tungsten HSS roll collars for the second remelting after centrifugal casting. Such successful innovation in high-tungsten HSS roll collars dramatically enhances the life span of HSS roll collars more than that of ordinary alloy steel cast roll collars. Besides, this technology breakthrough improves the anti-friction bearing of collars and it leads to more efficient and economical advantages. The experiments evidences are presented in this study.
Train Monitoring System Design Based on ARM-Linux Embedded Syetem
Authors: Wen Chang Ze
Published: January 2012

In order to make train monitoring easier, a embedded handheld device is designed to replace the dump box of LKJ2000 in this paper. The establishment of ARM-Linux development platform, code transplantation and embedded database development technology of QT and SQLite are introduced and Data acquisition, data dump, data analysis and printing are realized in the embedded system. The wireless remote communication is performed with GPRS module. The experiment results show that data acquisition and management become convenient and real-time with the embedded database and GPRS technology
Evaluation of Liuli Expressway Landscape Quality Based on Rough Set Theory
Authors: Tan Shao Fu
Published: January 2012

This paper constructed a system of indexes for evaluating Liuli expressway landscape, including 3 aspects of road-region environment landscape resources, aesthetics and ecological, totally 24 evaluation indexes. The rough set theory was introduced and first applied to evaluate expressway landscape quality. For calculating every index weight of Liuli expressway landscape quality accurately, index reduction principle was used to clear the redundancy indexes, and finally remained 15 indexes. Then, the evaluation index weight was determined by the method of attribute importance assignment weight. Finally, landscape quality indexes of the three landscape areas in Liuli expressway were obtained by calculating and analyzing.
Study on the Firing Table Compiling of a New Type of the Very Low Altitude Interception Device
Authors: Zhong Zhou , Jiang Yi , Li Yong Yuan , Zhang Chong
Published: January 2012

The Firing Tables Compiling of a new type of the very low altitude interception device is studied in this paper. Based on the analysis of drag coefficient identification during the date processing of the Firing Tables experiment, and the theoretical trajectory correction, then according to the defects of the traditional methods for the Compilation of Firing Tables, a new method of determining the correction data is developed which replaces the simple data with the correction function. This method will reduce the error to an obvious degree.
The Research on the Calculation Methods and the Influential Factors Analysis of the Mechanical Joint Persistence Ratio of Jointed Rock Mass
Authors: Chen Jian Yun , Hu Xi Wei
Published: January 2012

The paper presents a method used to model rock as continuous media with discontinuous joints. The Monte-Carlo method is employed in simulating the joint network of jointed rock mass based on certain principles, and the calculation method on the mechanical persistence ratio is studied, furthermore, some research on the influential factors on the persistence ratio is performed, and the values of some empirical parameters are obtained, which assured the stability of the results.
Framework of 3D Model Manufacturing Features Extraction Technology
Authors: Wang Xiao Gang , Bai Yue Wei , Liu Kai , Tang Xian Xia
Published: January 2012

This paper proposes a new feature recognition framework based on extensible rules, dividing recognition into two steps of extraction of model information and matching manufacturing features. The model information contains geometrical information and non-geometrical information. A new concept of mate rule and a neutral platform are introduced in matching of manufacturing features. Matching templates are established by combining mate rules in the neutral platform. Manufacturing features are recognized by matching geometrical information with templates. Attributes of manufacturing features are obtained from restructured non-geometrical information. The process and result of recognition is represented through a shaft part.
Structure Optimization of Large-Diameter Percussive Drill
Authors: Wang Xue , Yu Fu Sheng , Shen Xiao Qin , Dong Mao Qi , Zhang Rong Lu
Published: January 2012

The second and the third end faces of the tube support plate of the large-diameter percussive drill are prone to fracture. The structure optimization of large-diameter percussive drill is carried out in this paper. The fully closed structure is turned into semi-closed structure. The reinforcing rib is arranged. With a drop test analysis, the optimized structure can effectively reduce the stress of the drill.
Simulation of Design and Optimization of Local Oil Gas Ventilation Equipments with CFX
Authors: Jia Li , Wang Wen Juan , Yu Xiao Qing , Lin Mao , Zhang Yu
Published: January 2012

The paper focuses on studying the diffusion control of local oil gas in high-risk places. The industrial suction hood is applied to the design of local oil gas diffusion control device. According to the jet principle, the optimize design scheme of the flow channel toward suction inlet is put forward. Under a given refueling condition, the diameter parameter value of cover mouth of suction hood is defined through Computational Fluid Dynamics (CFD) code CFX. Meanwhile, a qualitative discussion and quantitative analysis of the different effect of inhalation before and after optimizations are given in detail
Design and Implementation of NIDS String Matching Based on SOPC
Authors: Li Jing Jiao , Chen Yong , Cholman Ho , Lu Zhen Lin , Nan Ling Qiao
Published: January 2012

String matching is a key problem in many network processing applications. Current implementations of this process using software are time consuming. This paper presents a string matching system that based on FPGA. This paper uses DM9000A to receive network data and uses Snort rule and HashMem function to match pattern. With software simulation the conflict pattern of Snort rules found out and processed separately. In the system, conflict can be high-speed solved. With the PC handle string matching that more than 16 Byte, the FPGA processing speed has improved greatly .The experimental results show that the system throughput is 1.22Gbps, more than 20 times of the software method. When processing more Snort rules system throughput is not affected. Experimental results show that the system can quickly adapt to the demand for hardware reconfiguration and meet the network application requirements.
Research on Warning Model about Drug Shortage in Hospital Based on RS-SVM
Authors: Wu Deng Feng
Published: January 2012

Based on data from hospital and method of empirical analysis, this paper address problem of drug shortage in hospital and try to use rough set theory to trace reason of causing shortage. After attribute reduction of decision table, the paper build a warning model by method of support vector machine to remind hospital to take measure to solve problem in advanced
Photocatalytic Activities of HZSM-5 Supported TiO2 in Different Electrolyte Solutions
Authors: Zhang Wen Jie , Li Ke Xin , He Hong Bo
Published: January 2012

Zeolite HZSM-5 was pre-treated by oxalic acid and used as support for TiO2prepared by sol-gel method. Photocatalytic activities of the supported TiO2on HZSM-5 were investigated with existence of three kinds of electrolytes, ie. NaCl, NaHCO3and NH4C. The use of these electrolytes encountered very similar influences on adsorption and photocatalytic degradation on HZSM-5 supported TiO2. Methyl orange total decoloration and photocatalytic degradation rates increased with electrolyte concentration when the concentration was lower than 0.1 mol/l. Adsorption of methyl orange of the photocatalyst went up constantly as electrolyte concentration rising from 0 to 1.0 mol/l. Photocatalytic degradation efficiencies undertook a slowly decrease at a long range of electrolyte concentration.
Prediction and Analysis of Vehicle Cab Interior Noise Based on Structure-Acoustic Coupling
Authors: Shi Wen Ku , Wu Guang Ming , Chen Zhi Yong , Guo Nian Cheng
Published: January 2012

To study the vibration characteristics of the vehicle’s cab, finite element model of the cab was established and structural modal analysis was made. According to the internal structure of the cab, acoustic finite element modal of the cab including the seats was built and cavity acoustics modal analysis was carried out. Based on the structural modal and acoustic model of the cab, the coupled acoustic-structure model was carried. The acoustic response of the cab was calculated by mode-superposition
Nonlinear Controller Design for Hypersonic Vehicles Based on Dynamic Inversion Considering Flexible States
Authors: Cheng Ze , Xue Peng , Liu Yan Li
Published: January 2012

This paper describes a nonlinear adaptive dynamic inversion controller for a flexible air-breathing hypersonic vehicle model. The complete characterization of the nonlinear internal dynamic of the Bolender and Doman model with respect to velocity，altitude and angle as the regulated outputs is considered in this paper. The derivation of the internal dynamics presented in this work is comprehensive of the flexible dynamics. For the purpose of control design，we decompose the equations of motion into functional subsystems，namely，the velocity subsystem，the altitude and flight-path angle subsystem，and the angle of attack and pitch rate subsystem. Each subsystem is controlled separately using available inputs and intermediate virtual control commands. The adaptive fuzzy system is then developed to identify the uncertain in the model parameters. Simulation results are provided to demonstrate the robustness and the efficacy of the proposed controller
Research on Road Signs Recognition Based on Machine Vision
Authors: Zhang Ming Heng , Zhao Yi Bing , Guo Lie
Published: January 2012

The road traffic signs recognition in open environment is an important research in the field of safe auxiliary driving, vehicle autonomous navigation and so on. Based on the characteristic of road signs, one-dimensional entropy division was carried on to segment the AOI image obtained by lane detection, and then the road signs were recognized by SVM with improved Hu moment features. Experiments show that the proposed method for road traffic signs recognition in open environment has good reliability and robustness
Research on Gas Station Selection Support System with Given Refueling Volume
Authors: Zhang Qing Hua , Xiu Ning Ning , Cheng Guo Quan , Wang Zhuan
Published: January 2012

In order to help vehicle users to save fuel cost, combining the refueling with transportation task, this paper provided a scientific solution of gas station selection during transportation task. Considering users’ personalized requirements, gasoline price, etc, this paper established a multi-objective decision-making model based on the aims of the shortest distance and minimum cost of given refueling volume. The model can be resolved by the algorithm designed. In order to improve its practical applicability, a visual decision support system which can show the gas station selected and route had been developed based on GIS. This system can provide selection of gas station which meets user’s personalized requirements and make the objective function optimal
Cost-Effective Energy Recovery Circuit for Plasma Display
Authors: Do Hyun Lark
Published: January 2012

A cost-effective energy recovery (ER) circuit for plasma display is proposed in this paper. Besides main full-bridge sustain switches, the ER circuit should be included in the sustain driver for plasma display to reduce the power loss. The proposed ER circuit consists of four diodes and a single external inductor. Due to a simpler structure than the conventional ER circuit, the efficiency can be improved and the overall cost is reduced. Theoretical analysis and performance of the proposed ER circuit were verified on an experimental prototype operating at 200 kHz switching frequency
Learning Machine Design for Mechanic Fault Diagnosis Expert System
Authors: Yu Yi Fan , Liu Xiao Ling , Chen Wen Bin
Published: January 2012

According to the features of fault diagnosis expert system, knowledge was expressed by applying production rule and certainty factor. What lead to incorrect knowledge was analyzed, and a certainty correction algorithm and rule discovery algorithm was proposed based on case studies. A learning machine of mechanic fault diagnosis expert system was designed and implemented by using C++ BUILDER 6.0. That provides technical support for noise control in substation.
The Solar Assisted Ground-Source Heat Pump Heating Applied Research of Cold Regions
Authors: Ran Chun Yu , Wang Zhe , Zhang Li Yun
Published: January 2012

This paper introduces that the designing of the solar energy - ground source heat pump integrated system aim at the ground source heat pump can not supply enough heat for cold regions at winter. The system performance analysis, application advantages and economic environmental benefits analysis indicate that the integrated application systems have significant energy-saving and environmental benefits.
Finite Element Analysis of High Pressure Storage Tank
Authors: Cai Yi , Ma Qiu Sheng , Tian Dong Xing
Published: January 2012

In this paper, based on Ansys the deformation and stress for high pressure long cylindrical natural gas storage tank are analysed. And obtain the stress distribution of the storage tank. The changes of stress are analysed in thickness direction and along the rigid wall. The results and theoretical results are accordance. On this basis, the modal analysis of tank is completed too. Obtained the tank various order natural frequency and vibration mode. The calculation results show that the method is effective and provide the theoretical basis for high pressure tank design
Numerical Simulation of Turbulent Flow for Various Inlet Velocities in Tee Junctions with Periodic Porous Media
Authors: Wang Yong Wei , Lu Tao , Wang Kui Sheng
Published: January 2012

The velocity fields of turbulent flow in Tee junctions have been calculated using large-eddy simulations model for three cases of various inlet velocities with periodic porous media. The ratio of the inlet velocity of the main tube to that of the branch tube were respectively 0.5, 1 and 2 in three cases. In the porous medium region of the Tee junction, the velocity at the center is obvious larger than that at the top or the bottom and the pressure drop heightens rapidly. Comparison of the three cases, the pressure drop, mean velocity, normalized velocity fluctuation and the velocity oscillation versus time are increase as the inlet velocity of the main tube increase.
Research Based on Simulink of Hearth Negative Pressure Control System
Authors: Song Le Peng , Chen Huan Huan
Published: January 2012

Aiming at the furnace control system present situation of complex working conditions are not easy to be understood, this paper hearth negative pressure control system for detailed analysis; Combining the identification system known model and combining with matlab for stability analysis; Set in simulink negative pressure system control model. Choose PI and dynamic feed-forward control method to realize control and realize the dynamic interference effectively suppress, attain better control effect
Experimental Study on the Characteristics of Modified Ca-Based Sorbents and its Mercury Adsorption Capability in the Flue Gas
Authors: Wang Peng , Wu Jiang , He Ping , Chen Jie He , Liu Qian Yan , Feng Cai , Zhang Jian Wen , Wei Ru Yin , Han Yue
Published: January 2012

In this paper, Ca-based sorbent, Ca(OH)2 and CaCO3, was modified with different concentration of KMnO4 and their mercury adsorption capability in the flue gas was experimentally conducted by using a lab-scale multi-phase flow reactor system developed by Shanghai University of Electric Power, and the result showed that the removal efficiency of flue gas mercury of Ca-based sorbent was greatly improved with modification by different concentration of KMnO4, and the removal efficiencies were 80.92%，85.38%，82.35%，83.51% and 89.84% respectively. The removal efficiencies of Ca(OH)2 modified with KMnO4 is increased significantly may be because strong oxidation of KMnO4 made Hg0 convert into oxidized mercury, Hg2 +, which is easier to be removed, as well as, the modification by KMnO4 may change the surface properties of Ca(OH)2 so that it became more active to capture mercury in the flue gas.
Research on New Folk Houses with Regional Characteristics and Earth Material
Authors: Wang He , Li Li Ping
Published: January 2012

Based on the actual requirements of constructing characteristic towns in Yunnan Province, this paper describes the “framework design principles for architectures with regional characteristics” in an explorative way as the control measures and guidance for the construction of new residences in small sized towns. Taking Jiasa Town in Xinping County of Yunnan Province as an example, the paper gives five “framework design principles” which are extracted from the constructional essence of “Tu-Zhang-Fang”(Soil-Made House), a kind of traditional building of the local Huayao Dai ethnic group and the features of the mountain landform of the Dry&Hot Valley, and provides the innovative ideas on the construction of new folk houses with regional characteristics under the control of the aforesaid principles.
The Measurement Method to Position Coordinates of Movable Platform for a Parallel Machine Tool
Authors: Guo Jian Ye , Zhao Liang , Sheng Zhong Qi
Published: January 2012

This paper took a kind of 3-TPT Parallel Machine Tool (PMT) as the object of research, and it mainly researched the measurement method to position coordinates of movable platform in PMT. First the paper introduced the structure of 3-TPT PMT. Then illustrated the device structure and the basic measurement principle for measuring the position coordinates of movable platform. Finally carried on the theoretical analysis to the specific measurement method and established the corresponding mathematics relationship. The measurement method that was presented in this paper had characteristics of simple structure, convenient and flexible operation, economical and so on, and simultaneously the research results of this paper laid a theoretical foundation for improving the movement precision of this PMT and had important practical significance
Modeling Growth Ring Mechanical Properties of Coniferous Wood Based on FEM
Authors: Cao Jun , Li Ming Bao , Zhang Xiu Mei , Zhang Jia Wei , Zhang Na
Published: January 2012

The mechanical properties’ modeling of coniferous growth ring based on finite element method is present in this paper. With the basic unit boundary conditions of stress and displacement, the constitutive relation is established between macro and micro-volume field. The multi-layer model of growth ring is 3 layers, such as early wood, transition wood and latewood layer. The first order displacement field equation is substituted into the micro-variable differential to build the balance equation which has the periodic characteristics. Single-cell finite element model is calculated out using APDL language programming, and the visual results are obtained directly by the ANSYS program output window. With the FEM model, imposing the load on it, the simulation result show that it can calculate out the mechanical properties of material. Modeling Growth Ring Mechanical Properties of Coniferous Wood based on FEM
Optimal Design Study on the Radian and Length of the Guide Plates for the Pipeline Elbow
Authors: Wu Lan Ying , Wang Yan Lin , Wei Yong
Published: January 2012

Pipeline elbows are extensively applied in the liquid-conveying piping system, which vibration and noise control are always difficult and critical. The structural style of the guide plates for the liquid-conveying pipe noise eliminating elbow is numerical calculated in this paper, then we find that the fluid liquidity in the liquid-conveying pipe elbow is improved very well by the cross-sectional bending radian and export length of the guide plates, and the two parameters are also optimal designed. The calculated results show that the total pressure difference in the liquid-conveying pipeline elbow decreases first and then increases with the cross-sectional bending radius of the guide plate increases; The total pressure difference decreases first and then increases with the export length of the guide plate increases; When the guide plates according to the gold ratio arrangement, the number, the cross-sectional bending radius and the length are 2, 200 mm and 40 mm respectively, we obtain the total pressure difference is 10707.87 Pa in the liquid-conveying pipeline elbow, comparing it to the result of the original program, it decreases 38.58%, so the internal flow field is improved better, the optimal design has a very obvious effect.
Study on the Machinability of Free-Cutting Steels 1214 and 12L15 with Coated Tool
Authors: Wei Ying Ying , Liu Zhi Qiang , An Qing Long , Chen Ming
Published: January 2012

Research has been done on machinability of two different kinds of free-cutting steels by using coated cutting tool at the condition of different cutting parameters. Orthogonal tests are adopted in order to compare the cutting performance of the two materials. The cutting force, surface roughness, chip morphology and tool wear are investigated, which reveal the influence of Pb and other composition on machinability. The experiment shows that 1215 has more or less better performance than 12L14. It is of great significance for the development of environmental friendly products.
Experimental Investigation on Cutting Aluminum Alloy Thick Plate with Brazed Diamond Wire Saw
Authors: Xiao Bing , Li Shu Sheng , Zhang F.L. , Wang B. , Li S.
Published: January 2012

A new high frequency induction brazed monolayer diamond wire saw for cutting aluminum alloy thick plate is developed with the helical continuous cutting edge distance on the wire surface. In order to solve the problems of forming cutting aluminum alloy plates,the brazed diamond wire saw is used to conduct the preliminary cutting tests on the 50 mm aluminum alloy plates on the modified grinder experimental platform.The results indicate that the cutting efficiency of the brazed diamond wire saw is increased with the increasing of the feed tension, the wire saw line speed and the diamond grits size. Furthermore, some cutting chips shape of the aluminum alloy is presented based on experimental cutting.
Geometric Error Compensation Methods of Numerical Control Machine Tool
Authors: Wang Xiao Jun , Fu Xiao Guang
Published: January 2012

In this paper the characteristics of geometric errors is discussed in detail, error compensation methods used in productive practice and relevant examples are given. Finally, the application of error compensation in different situation is discussed according to the characteristics of machining center. The machine accuracy can be improved by error compensation. It has important practical reference value for reasonable use and maintaining of NC machine tool.
Micro Grinding Technique of Mutilcore Fiber Endface Using 3D Flock-Structured Film
Authors: Zheng L.B. , Xie Jin , Na Tee Koon , Xie H.F.
Published: January 2012

In order to control the 1~2-um protrusion height of mutilcore (MT) fiber endface in optic connectors, a micro grinding approach was developed using a 3D flock-structured film. The objective is to replace traditional lapping with loose-abrasive slurry. Experimental result shows that to achieve its height requirement and good quality, this approach requires 5-steps grinding processes with normal coated lapping film and three-dimensional coated flock lapping film. It is found that using 3-um-size silicon carbide flock lapping film, the grinding time and the pressure are the key factors to control he 1~2-um protrusion height of fiber endface. Moreover, the endface protrusion height of 1-um and larger can be achieved through the optimization of micro-grinding conditions.
Multi-Level Fuzzy Comprehensive Evaluation of Hydraulic Oil Performance
Authors: Wang Q. , Shi L. , Song Sheng Li , Chen S.M.
Published: January 2012

There are a large number of factors influencing the performance of hydraulic oils, and many of them can not be quantified. Currently, the evaluation indices of hydraulic oils are contamination, physical and chemical performance. In this paper, a new fuzzy comprehensive evaluation method is put forward, by which the oil can be synthetically evaluated from the aspects of physical and chemical indices, simulant indices and performance test indices.
Process Based Machining Deformation Control for End Milling
Authors: Jiang Zhao Liang , Liu Y.M , Yi W.
Published: January 2012

Unexpected work-piece deformation during the course of milling will lead to part bending or distorting, which is critical to get its quality performance lower. In this paper, a novel process based deformation control method is proposed using High Definition Metrology (HDM). Main factors that affect machining deformation of work-piece are analyzed firstly. Then process based deformation control model is made, which divides one machining process into four stages. The surface flatness data of work-piece at each stage are obtained respectively. Finally, the practicality and effectiveness of this new approach is verified using the case of Aluminum alloy 6061 part milling.
Design Knowledge Origin Characteristics and Classification
Authors: Chen Jie
Published: January 2012

In this paper, we established the methods to classify and represent the concept-design knowledge and developed an ontology-based model presenting the design knowledge as well as a model for modeling cycles. We further applied these methods and models to develop a specific ontology-based design knowledge model and validated them in the management system of design knowledge for the construction machinery.
A Bluge Rotational Tool in Thin Film Nanostructures Removal
Authors: Pa P.S.
Published: January 2012

A bluge rotational tool has been developed as an effective precision electrochemical removal for the thin film nanostructures from LCD panels. This ultra-precise process effectively removes defective Indium-Tin-Oxide layers allowing LCD panels to be returned to the production line and significantly reduces costs. In the current experiment a 7th Generation TFT-LCD panel was used. A high rotational speed of the cheek rotational tool elevates discharge mobility and improves the removal effect. A negative electrode of large diameter with a small end radius provides higher current density and also improves the removal affect. Pulsed direct current can improve the effect of dregs discharge and is advantageous when combined with a higher electric power. A fast feed combined with a high current flow results in very effective removal of the color filter layer. This novel design using electrochemical removal as a precision recycling process for removing ITO layers from LCD panels is clean, effective and very fast.
Study on an Ontology-Based Design Knowledge Modeling Algorithm
Authors: Chen Jie
Published: January 2012

In this paper, we concentrate on the ontology-Based design knowledge modeling technologies for the construction machinery. For that, we study the ontology modeling theory, the representation of product design knowledge and the ontology modeling of design knowledge, etc. From the design knowledge management’s angle, design knowledge modeling approach is studied to support the design knowledge development, transfer and reuse for the construction machinery.
The Point Cloud Collection of the Incisor Teeth of Beaver and Re-Construction of its Curved Surface
Authors: Xie Feng , Zhao J. W. , Ju F.
Published: January 2012

The research of state-of-the-art bionics shows that teeth, claw and animal surface etc. of a lot of animals obtain perfect geometric shape and biologic-mechanical property after long evolutionary process. The paper was based on the bionic research of the incisor teeth of beaver. The point cloud of the incisor teeth was obtained by Reverse Engineering (RE) technology. And the curved surface of the incisor teeth was re-constructed by RE software to get its three-dimensional surface model. All of those research results will supply the base of bionic study to the optimization of the geometric shape and the mechanical property of cutting tools.
Wireless Order-Meal System Design Based on QT and ARM
Authors: Zhang Guang Nan
Published: January 2012

A kind of design method of a complete Wireless Order-Meal System based on embedded systems and wireless communication technology is propsoed. Making use of the S3C2410, PXA270 and linux2.6 to build embedded system platform;selecting wireless WI-FI techniques to realize the wireless communication between subsystems; using Qt/embedded technology to develop the interface of embedded system; developing server system of backstage management using the JSP + MySQL5.0.
Experimental Investigation on Conventional Grinding of TC4 and TC11 Using SiC Abrasive
Authors: Guo Guo Giang , Liu Zhi Qiang , An Qing Long , Chen Ming
Published: January 2012

This paper investigates the machinability of TC4 and TC11 in conventional grinding using SiC abrasive. The experiment result indicated that TC11 is more difficult to grind than TC4 because of its higher strength and ductility. Ground surface was in a state of high tensile residual stress to each material, thermal cycling of surface layer had the greatest effect. The ground surface experienced microstructure alteration, a heat-affected zone (HAZ) and plastically deformed layer were observed.
Investigation on Tool Wear about High Efficient Axial Turning-Grinding of Engineering Ceramics
Authors: Tian X.L. , Guo Fang , Mao Ya Tao , Zhang B.G. , Wang Jian Quan , She A.Y.
Published: January 2012

Axial turning-grinding is a processing method to cut cylindrical workpiece or inner surface of hole along its axis, using the kinetic energy of high-speed rotation annularity tool, the abrasives in tool tip as the main cutting edge to remove materials and the abrasives in the outside surface of tool as a minor cutting edge to sharpen the processed surface. And the cutting thickness and feed rate could be more than 5~10mm and 200mm/min respectively in a cutting, realizing high-efficiency, low-cost processing of engineering ceramics. Using the method, the ceramic sleeve of delivery valve precision coupling components in the engine is processed with high efficiency, and tool wear was researched with single factor test. The result indicated that the ratio of spindle speed and workpiece speed should be within a certain range in order to minimize tool wear, and tool wear increases with the increase of cutting depth, but not a linear relation.
Progress in Study of Oxygen-Related Defects in Electron Irradiated CZ-Si
Authors: Ma Qiao Yun , Chen Gui Feng , Zhang Hui , Xue Jing Jing , Su Peng , Hao Qiu Yan , Liu Cai Chi
Published: January 2012

Electron irradiation on silicon results in the creation of vacancy (V) and silicon self-interstitial (I).Vacancy tends to integrate with oxygen and forms the complexes of vacancy and oxygen (VmOn)such as VO, VO2, and VO3. These complexes of vacancy and oxygen in silicon have been the subject of extended investigations by standard methods such as infrared absorption. In infrared spectrum, the different VmOnhas the corresponding peak. Irradiation induced defects as the core of oxygen precipitate can accelerate the oxygen precipitation. Oxygen precipitation plays an important role in the internal gettering (IG). In electron irradiated silicon, annealing at 300700 °C leads to the formation of two types of electrically active centers that are shallow thermal acceptors (TAs) and the well-known thermal donors (TDs). In this paper, the generation conditions, the infrared peaks of VmOn, the types of oxygen precipitation induced defects, the characters of TAs and TDs are studied.
Research of Electric Properties of Monocrystalline Silicon Solar Battery
Authors: Li Zhan Kai , Wang Jing Qin , Zhang Fu Min , Xia Xin , Li Hao Hua , Meng Long , Zhang Peng , Qi Li Bin
Published: January 2012

With crystalline silicon solar battery industry is developing rapidly, there are scientific significance and application value for guiding the industrial production using analysis of the electrical properties of crystalline silicon solar battery. This paper studies that the main parameters of monocrystalline crystal silicon solar battery: the junction depth and superficial concentrations influence on electrical characteristics of monocrystalline silicon solar battery. The result shows that for maximum efficiency, it is bound to get the largest possible open circuit voltage, short circuit current and fill factor of the product, therefore, it is necessary to control the junction depth and doping parameters. If the junction depth is constant, with the increased superficial doping concentration of monocrystalline silicon solar battery, the photoelectric conversion efficiency of the battery increases slowly at first and then rapidly decreases, and the deeper the junction depth is, the more obvious trend of the photoelectric conversion efficiency is. If the superficial doping concentration is constant, the photoelectric conversion efficiency of the battery is increased with the reductive junction depth of surface of monocrystalline silicon solar battery.
Research on the Preparation of Food-Grade Sea Cucumber/Gelatin Nanofiber Membrane with Electrospinning Method
Authors: Hong Wei , Li Qing Shan , Jiao Jian , Guo Hui Long , Sun Jing , Liu Jun , Guo Bin , Xing Guang Zhong
Published: January 2012

In this paper, the Food-grade sea cucumber / gelatin nanofiber was for the first time successfully prepared with electrospinning method. With the help of the infrared spectroscopy and X-ray diffraction, this paper analyzed the content of the nanosea cucumber powder and gelatin as well as the impact of different preparation methods on the crystalline of the Fiber membrane. Furthermore, Scanning electron microscope (SEM) was utilized to observe the fiber morphology, and thus discuss the best content of gelatin. The Experimental result manifested that as electrospinning method was used in preparing the Food-grade sea cucumber / gelatin nanofiber membrane, the nanosea cucumber powder and gelatin dispersed well in the fiber membrane, while it did worse in the crystalline of membrane. As the Gelatin content of the spinning solution is 10 wt. %, the spinnabiliy as well as its fiber-forming properties is of optimum.
Research on the Removal of Organic Contaminants of Photoinitiator Wastewater under Fenton Condition
Authors: Liu She Jiang , Ma Kai , Liu Xiu Li , Zhao Zhi Yuan
Published: January 2012

Photoinitiator wastewater and its by-products contain many kinds of contaminant organics which induces COD in a high level, as a result of which, it is essential to take measures to reduce the organic contents. Interference effect of H2O2 and Cl-1 on COD testing was investigated initially. The main parameters that govern the complex reactive system, i.e. H2O2/COD, H2O2/Fe2+, pH in solution was also studied by using L25 (56) orthogonal test so as to make sure the best degradation condition. It was shown that H2O2/COD=0.69H2O2/Fe2+=10:1pH=3 could ascertain the COD removal in a high level.
Researches and Development of Activated Water and its Effects on Biological Growth
Authors: Zhang Dong Mei , Liu Jie , Liang Jin Sheng , Meng Jun Ping
Published: January 2012

Activated water is beneficial to healthcare due to its changes of physicochemical properties compared to ordinary water. Some related researches on activated water are reviewed in this paper. Take magnetized water, mineral and ceramic activated water and electrolyzed water for examples, activating materials and technologies are briefly introduced. Then, mechanism of activation devices and activated water are summarized and discussed. Finally, mechanism of activated water on biological growth is analyzed by comparing their different properties.
Synthesis and Characterization of Ionic Liquid 1-Propargly-3-Methylimidazolium Chlorate
Authors: Cai Ying Jie , Ji Xiu Jie , Cheng Bo Wen , Xie Dong Dong , Wang Qiu Ling , Song Jun , Ren Yuan Lin , Xu Xian Lin , Zhang Guo Feng , Li Bo Wei , Yang Zhi Xiong
Published: January 2012

The title compound (C7H9ClN2, Mr = 156.61), an imidazolium ionic liquid with alkynyl, was synthesized by an improved method in high yield. FT-IR,1H NMR,13C NMR and elemental analysis were performed to characterize the molecule of the ionic liquid, and its crystal structure was determined by single-crystal X-ray structure analysis. The results indicate that the improved procedure is very feasible and 96% yield. The crystal structure analysis will be conducive to clarify the relationship of structure and function for ionic liquid with alkynyl the compound.
A Study of Corrosion Inhibition of Carbon Steel in Hydrochloric Acid Using BIMGCS12-3
Authors: Sun Yong Ming , Chen Hong Ling
Published: January 2012

Gemini benzimidazole cationic surfactant, propanediyl-α, ω-bis-(N-dodecyl benzimidazole ammonium bromide), referred as BIMGCS12-3, was synthesized from the raw materials of benzimidazole, dodecane bromide and dibromopropane. The structure of the target compound was confirmed by1H NMR, elemental analysis and melting point measurements. Its surface properties were determined and corrosion inhibition of carbon steel in 1M HCl was investigated by gravimetric measurements. BIMGCS12-3 exhibited excellent protection for carbon steel in the low concentration 20mg L-1and the inhibition efficiency for corrosion decreased with increment of temperature.
Preparation and Characterization of Perovskite-Type Oxide Catalysts for Combustion of Methane
Authors: Xue Gang , Zhang Xue Fang , Wang Sai Fei , Zhao Chao Yue
Published: January 2012

A series of rare earth perovskite-type oxides La09Sr0.1Co0.9Mn0.1O3La08Sr0.2Co0.8Mn0.2O3and La05Sr0.5Co0.5Mn0.5O3were prepared along the sol-gel method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (SEM), transmission electron microscopy techniques (TEM) and catalytic activity measurement for combustion of CH4. The results indicated that a perfect crystal structure of perovskite was formed and La3+and Co3+ions were partly replaced by Sr2+and Mn3+ions, respectively, and perovskite-type oxides were composed of nanocrystals with particle size of 20~50nm. The catalytic activity for the combustion of CH4 was evaluated and La05Sr0.5Co0.5Mn0.5O3exhibited best performance with the temperature of 50% and 90% conversion efficiency of 723K and 833K.
Preparation and Characterization of Silica-Alumina-Pillared Rectorites
Authors: Xu Hong Yan , Chen Xing Tong , Guo Ai Hong
Published: January 2012

The silica-alumina-pillared rectorite materials (SiAl-REC) were developed a novel method, which combined several techniques such as ion-exchange, intercalation and surfactant modification. The morphology, composite structure and pore properties of such composite materials, were investigated by X-ray powder diffraction (XRD), Fourier-transform infra-red (FTIR) spectra, as well as Nitrogen Adsorption-Desorption Isotherms. The layer structure of the prepared materials retained and their pore structures were found to be slit-shaped pores located between plate-like particles. The prepared SiAl-REC materials had a BJH pore volume of 0.65cm3 g-1, a remarkably high BET specific surface area940m2 g-1 and a narrow pore size distribution in the mesoporous region 4.3 nm after thermal treatment at 600 °C.
Analyzing Rolling Pressure of Rolling Strip by Multi-Object Contact Multi-Pole Boundary Element Method
Authors: Shu Xue Dao , Liu De Yi , Shen Guang Xian
Published: January 2012

For guiding production effectively and revealing rolling mechanisms, the analysis of rolling-pressure distribution regulation is very important. Because rolling strip belongs to multi-object contact engineering problem which involves coupling deformation, obviously the accuracy of disaggregate mathematical method is low. Therefore, in this paper,it is developed that multi-object, elasto-plastic and frictional contact multipole Boundary Element Method (BEM) by Fortran program. It can simulate five object synchronous contact accurately without artificial assumption.The three dimensional rolling-pressure distribution regulation of rolling strip has been obtained through this program. Through testing and calculating the load properties of bearing, the result shows that it is accordant for test and calculation. Therefore, multi-pole BEM is one of the effective numerical analytic tools of rolling contact problem, and the obtained result of rolling-pressure distribution can provide for reference value for analyzing rolling strip.
Estimation of Thickness Ratio of Bi-Layer TiNi to Enhance Shape Memory Behavior
Authors: Mohri Maryam , Ahmadabadi Mahmud Nili
Published: January 2012

Shape memory thin films deposited by sputtering are attractive candidates for micro-electro-mechanical-system (MEMS) because of their large deformation and strong recovery force. In the present study Ni-Ti thin films have been deposited on NaCl substrates by DC magnetron sputtering source fitted with an 80mm diameter alloy target. In order to obtain a variety of film compositions, several discs of alloy target, which prepared in vacuum arc remelting (VAR), were used. Three types of thin films have been deposited; Ti and Ni-rich thin films were separately deposited on NaCl substrate and also a composite layer of Ni45Ti50Cu5 and Ni-rich. The as deposited Ni-Ti thin films were crystallized to change the amorphous structure to a nanostructured material to characterize shape memory and superelastic behaviors. The effect of composition on film structure and mechanical behavior was studied by using X-ray diffraction (XRD) and nanoindentation. The results of thin films behavior were used to calculate the thickness ratio of be-layer composite NiTi to obtain enhanced shape memory behavior.