bluuebunny/crossref_metadata_2025 huggingface dataset:
The Research on Risk Assessment of Failure Mode Based on FMADM Theory
Authors: Hou Ming Wei
Published: December 2011

This article puts forward the method of failure mode’s risk assessment by using fuzzy multiple attribute decision-making theory that based on fuzzy theory, overcomes the risk assessment’s shortcoming during the process of using traditional FMECA technology, and then proves the method is scientific and reasonable based on the analysis and calculation of a certain type of marine submersible motor pump.
Fuzzy C-Means Cluster Segmentation Algorithm Based on Bacterial Colony Chemotaxis
Authors: Li Yan Ling , Li Gang
Published: December 2011

Fuzzy C-Means(FCM) algorithm is one of the most popular methods for image segmentation, but it is in essence a technology of searching local optimal solution. The algorithm’s initial clustering centers are stochastic selection which causes it to depend on the selection of the initial cluster centers excessively. For this reason, fuzzy C-means cluster segmentation algorithm based on bacterial colony chemotaxis (BCC) is proposed in this paper. Firstly, initial cluster centers of FCM algorithm is get by BCC algorithm. Then, the images are segmented using FCM algorithm. Experimental results show that the proposed algorithm used for image segmentation can segment images more effectively and can provide more robust segmentation results.
Research on Dynamic Location Problem Model and Algorithm of Distribution Centers
Authors: Cui Fei Tao , Li Yan Hui , Wei Ao Xia
Published: December 2011

Considering the logistics system time-varying characteristic, this paper establishes a distribution center dynamic programming model. The model is using improved D&O rules and branch and bound algorithm to list each phase alternative distribution center scheme, then solved by dynamic programming method, to find the optimal scheme of the whole planning period. Through example and contrast, prove this calculation algorithm is feasible and better.
Performance Analysis of a Hyperbolic Flexure Hinge Based on its Closed-Form Equations
Authors: Hu Jun Feng , Li Pei , Cui Xiang Fu
Published: December 2011

In order to the effects of structural sizes of a hyperbolic on its performance, sensitivity and accuracy analysis are performed in this paper. According to the structure feature and force exerted on the flexible hinge, the closed-form equations are formulated for compliances to characterize both the active rotation and all other in- and out-of-plane parasitic motions by using the Castigliano’s second theorem. Meanwhile, the accuracy equations are obtained using the Castigliano’s second theorem. According to the closed-form flexibility formulas, the effects of the four structural parameters, such as thickness, notch depth, length and width, on the flexibility of flexible hinge are analyzed, respectively. In order to study further the effects of the structural parameters on its flexibility, we derive the sensitivity equations, and the sensitivity analysis is carried out. Meanwhile, the accuracy analysis of the hyperbolic flexure hinge is performed. The analysis results have shown that the parameters have large influence on in-plane compliance, and have small effects on out-of-plane one. And the changes are larger within initial small range of parameters, while be small variation in larger size range. And the length has no effect of sensitivity.
Numerical Simulation Analysis on the Ten Cross Rolls Straightening Process of the Heavy Calibre Seamless Steel Tube
Authors: Huang Hua Gui , Zheng Huan Ping , Du Feng Shan , Wang Wen Zhang
Published: December 2011

The size and roundness tolerance are common defects of the heavy caliber seamless tube after rolling and heat treatment. In order to disclosure the straightening mechanism of the heavy caliber seamless tube with ten cross rollers straightening machine, a nonlinear finite element model was set up on the platform of MSC.MARC. In this model, a heavy caliber seamless tube of Φ750 × 37 mm with initial roundness tolerance was used. The simulation results show that, the roundness tolerance declined from 1% to 0.2% after straightening, so that the initial roundness tolerance was almost eliminated. And the strain and stress distribution of the tube, the straightening force fluctuating caused by the roundness tolerance were presented and discussed. The analysis results obtained may provide a theoretical foundation not only for establishing the straightening process, but for the machine structure designing.
Phase-Field Simulation of Solidification Double Dendritic Growth of Binary Alloy in the Forced Flow
Authors: Long Wen Yuan , You Ding Ping , Yao Jun Ping , Wan Hong
Published: December 2011

We study the effect of force convection and temperature on the double dendrite growth during the solidification of binary alloy using a phase-field model. The mass and momentum conservation equations are solved using the Simple algorithm, and the thermal governing equation is numerically solved using an alternating implicit finite difference method. The results indicate that dendritic grows unsymmetrically under a forced flow, the growth velocity of the upstream tip is faster than the downstream tip. The downstream tip of the first dendrite and the upstream tip of the second dendrite are influenced each other, the upstream tip of the second dendrite will Coarsen, and the concentration at the boundary between them is the highest. Moreover, the interaction between the two dendrites is more and more obvious with the increasing of the temperature.
Neural Network Based Expert System for Steel Bar Pipeline Fault Diagnosis
Authors: Yin Jian , Mei Li Ting
Published: December 2011

In modern continuing steel bars production pipeline, there are various equipments and automatic controls combining with mechanism, electricity, hydraulic pressure and aerodynamic. This field of fault detection and diagnosis deals with design of computer-based automated system that can assist plant operators. The neural network based expert system have advantages of parallel distributed processing, high robust, fault tolerance, adaptive and self-organization. Applying neural network based expert system for the condition detection and fault diagnosis of steel bars pipeline can reduce the economic loss caused by system downtime.
The Evaluation of Multi-Supplier Quality Competitiveness Based on TFN-AHP Method
Authors: Xu Zhi Tao , Ming X. G , Wu Zhen Yong , Song Wen Yan , He Li Na , Li Miao
Published: December 2011

The paper put forward a method for the evaluation of multi-supplier quality competitiveness (MSQC) based on Triangular Fuzzy Number-Analytic Hierarchy Process (TFN-AHP) method with the purpose of distinguishing the evaluation between new material of new supplier, new material of old supplier, old material of new supplier and old material of old supplier and in the index configuration, the index weight and the unique evaluation results analysis. The method borrowed can not only used for MSQC comparison, but also for strengths and weaknesses analysis of MSQC. It is a dynamic evaluation method aiming for continuous improvement of supply quality management.
The Effects of Compression Pressure Applied on the Manufacture of Carbon Composite Bipolar Plate for PEMFC by Utilizing Graphite Waste Products
Authors: Sadeli Yunita , Soedarsono Johny Wahyuadi , Prihandoko Bambang , Harjanto Sri
Published: December 2011

Proton electrolyte membrane fuel cells (PEMFC) have near zero carbon dioxide and hazardous pollutant emission. Thus, it is considered as one of energy sources for transportation and other application which can improve environmental performance by decreasing the emission of greenhouse gases and other air pollutant. In accordance with its environmental preservation values, graphite waste product from electric arc furnace (graphite EAF) was chosen as a potential candidate material for bipolar plate for PEMFC. The utilization of graphite waste product is expected to result in light-weight and cost-effective bipolar plates. In this paper, we used graphite EAF as a filler together with carbon black and epoxy resin as a binder. We examined the effects of differential pressure applied on compression molding process on density, porosity, flexural strength and electrical conductivity of the resulting carbon polymer composite bipolar plate. Pressure was applied from 30 MPa - 60 MPa in increments of 5 MPa while maintaining constant temperature operation at 700C for 4 hours. Maximum value of bipolar plate density was achieved at application 55 MPa, of 1.69 g/cm3. At this condition, the flexural strength was measured to be 48 MPa with the porosity of 0.7%, and electrical conductivity of 1.03 S/cm. Taken together, we demonstrated that graphite EAF is a good candidate for the manufacturing of polymer composite bipolar plates.
Finite Capacity Scheduling - Large System Design
Authors: Martin Rodney L.
Published: December 2011

This paper presents the design principles for a large finite capacity scheduling system which takes into account alternative tools and machines. The system will produce tightly packed and stable schedules which in many cases will be close to optimal. The system can then be used as a platform for research into the application of decision making techniques, mathematical optimization, and other modern techniques.
Research of Complex Plate-Type Cam Processing Based on MasterCAM
Authors: Liu Ling , Zhang Li
Published: December 2011

Because of cam transmited the specificity of force and motion,they are widely used in various machinery campaigns equipment and automatic control device in order to implement the movement of all kinds laws.This article introduced the research status and prospect of plate-type cam.MasterCAM served as a platform,to use their CAD capabilities and a mathematic analytic method to complete the parametric design of non-circular cam curve.Using the solid modeling completed the modeling function of cam.Using CAM functions of MasterCAM completed automatic generation of tool path,virtual simulation process and automatic generation of NC code.The design of the cam and CNC machining,high efficiency,sophisticated features that will help improve the manufacture of the cam quality,shorten product development cycles,lower production costs has a significant role for the formation of industrial scale production has great significance.
Concurrent Tolerance Design System Based on Manufacturing Context
Authors: Wang Yi Feng , Zhang Heng , Cao Yan Long , Yang Jiang Xin
Published: December 2011

This paper introduces a computer-aided concurrent tolerance design system based on real manufacturing resources (CATFM), which can ensure the optimal robust tolerance and consider real manufacturing resource owned by the factory. Firstly, the concurrent tolerance design model which can get balance between quality and cost utilizing Taguchi's quality loss function is proposed. Then the principle of concurrent tolerancing is concisely depicted through analyzing the overall structure of the system, and the design method is described in detail. Finally, an example is adopted to illustrate the proposed system.
Hydrodynamic Integrated Optimization of Two-D Hydrofoil Based on Kriging Model
Authors: Yang Zhuo Yi , Gao Ting , Pang Yong Jie , Ma Yan
Published: December 2011

Abstract. It is accurate to use CFD hydrodynamic model in optimal design, but its efficiency is low. According to variables design of experiment was arranged, then kriging model was established to by CFD hydrodynamic calculations of two-D hydrofoil. The two objectives which were the maximal ration of lift to resistance and minimal min-pressure coefficient were linearly weighted sum to a single objective. Genetic algorithm was carried out to solve the hydrodynamic performances optimization of the hydrofoil. After optimization, the ration of lift to resistance was improved and min-pressure coefficient was increased. The result shows that the Kriging model can reflect the identity of the objective, effectively reduce the cost of CFD simulation.
An Damping Analysis on Local Vibration in Foundation of ‘four in one’ Nitric Acid Plant
Authors: Huang Song He , Wei Gao Jun , Feng Jin Chun
Published: December 2011

‘four in one’ nitric acid plant is a key equipment to manufacture nitric acid. Its foundation is placed between the axial flow compressor and the expander, and has larger amplitude. Choosing the foundation of this machine as study subject, this paper analyses the biggest disturbance value of all vibration source in line with Code for design of dynamic machine foundation and by adding T-shaped kerfs on the box girder between the axial flow compressor and the expander. It also conducts harmonic response analysis on this foundation with the finite element method. By comparatively analyzing the displacement harmonic response figure of nodal points on the X, Y and Z axis in the foundation before and after adding the T-shaped kerfs, it indicates that T-shaped kerfs can dramatically mitigate the steady-state harmonic response amplitude.
On the Creation and Design Methods of New Chinese Furniture
Authors: Xu Ji Feng , Zhang Han Ning
Published: December 2011

Through the analysis of the formation, evolution and extension of the concept of new Chinese furniture, the new Chinese furniture, put forward the basic concept and idea of the innovative design of new Chinese furniture, focused on specific method for the function extension, technological innovation and form reconstruction, and provides theoretical guidance for the design practice.
Study on Fashionable and Preferable Emotion of Men’s T-Shirt between Senior Males and Females
Authors: Zhang Xiao Xia , Liu Guo Lian
Published: December 2011

T-shirt attracts a crowd of various consumers and endures worldwide popularity for both ever-changing style and colour-rich. In this article, it takes 42 men’s T-shirts as the objects, “fashionable” and “preferable” as emotional stimuli words were used from the point of view visual cognition. The aim of this paper is to provide concrete basis for the design of more fashionable and preferable emotion of men’s T-shirts to meet the needs of senior consumers.
Modification of Fly Ash by Sodium Tetraethylenepentamine-multi Dithiocarbamate and its Removing Performance towards Cu(II)
Authors: Liu Li Hua , Li Bo , Cao Jing , Zhou Zhi Hua
Published: December 2011

A modified fly ash (MFA) was prepared from fly ash (FA) and tetraethylenepentamine-multi dithiocarbamate (TEPAMDT). The structure of MFA was characterized by FTIR, and the morphology was observed by using scanning electron microscope (SEM). Its removal perfermance towards heavy metals was assessed by employing it to the treatment of simulated wastewater containing Cu2+ and comparing with TETAMDT. The results show that the fine particles in FA assemble to form a porous crystal with high specific surface area after being modified due to the pozzolanic reaction. The dosage of MFA is far lower than that of FA and the treatment cost is less than that of TEPAMDT. The removal rate of Cu2+ can reach 100% at the dosage of MFA 412 mg/L when the Cu2+ simulated wastewater concentration is 50 mg/L. Compared with TEPAMDT, using MFA can not only increase the sedimentation rate of flocs but also reduce the volume of precipitates, and the MFA-Cu precipitate obtained is more stable than TEPAMDT-Cu in acid solution and would not cause the threat of instantly releasing heavy metal under weak acidic and alkaline environment.
Study on the Behavior of Reinforced Retaining Wall Under Earthquake Loading Using FEM Analysis
Authors: Jia Liang
Published: December 2011

Nonlinear FEM (ADINA) is used for the mechanical analysis of reinforced retaining Wall. In this analysis,3-D nonlinear FEM model is built in consideration of the cooperation and interaction among backfill soil, panel and reinforcement strip; the backfill soil is simulated by nonlinear static and dynamic elastic-plastic model; the reinforcement is simulated by the dual-phase enhanced linear elastic-plastic model which can describe the intensified features of the reinforcement; the interaction of soil and retaining structures is simulated by the friction-element. The application to a project yields the distribution law of the strip’s most dollar point of force and the changing rules of the strip’s pulling force around earthquake.
Collaborative Work Heterogeneous Data Sharing and Application Based on Petri Net
Authors: Hao Yong Ping , Huang Hao Qiu , Zeng Peng Fei , Shao Wei Ping
Published: December 2011

Based on profound research of the characters on Petri Net, the concept of collaborative work heterogeneous data sharing (CWHDS) was proposed, and elaborated the modeling processes of CWHDS based on Petri Net. Furthermore, this paper used heterogeneous data queue to serve as the access station of CWHDS, and further discussed the translation and firing rule on Petri Net in relation to heterogeneous data queue. Finally, an application instance of multi-disciplinary collaborative design management system (MCDMS) based on CWHDS was introduced.
Development of Small-Efficient Tool for Ultrasonic Reactor
Authors: Dai Sheng , Zhang Yun Dian , Zai Peng
Published: December 2011

A small-high efficiency ultrasonic reactor tool is designed by this paper. This tool can promote chemical reaction rate, increase the reaction yield. Having analyzed its modal frequency with ANSYS software and assembled the manufactured tool with transducer and horn, we can use Impedance analyzer to test the actual frequency. Since there are only minor errors between actual resonant frequency and the modal frequency, this method meets the design requirements.
Driving Force and Process Model of Technological System Evolution
Authors: Dong Yan Qing , Zhang Huan Gao , Zeng Ji , Tan Run Hua , Yu Fei
Published: December 2011

With the progress of human, the society is progressing. All products involved in society also are constantly evolving. Actually, technological system has its own technological evolution like the biological evolution. Technology evolution is not accidental, but driven by some factors. And every kind of driving force is happened according to certain principles. This paper proposed nine driving force of products technological evolution as well as the evolution theory. At last, a case study of the mobile phone verified the proposed theory.
Effects of a High Magnetic Field on the Solidification Behavior of Binary Al-Si and Ag-Cu Systems
Authors: Liu Tie , Liu Yin , Wang Qiang , Wang Yan , Wang Kai , He Ji Cheng
Published: December 2011

To investigate the effect of high magnetic fields on the solidification behavior of binary eutectic system, solidification and quenching experiments of Al-11.8 wt.%Si and Ag-10 wt.%Cu alloys were carried out with and without an 8.8 T high magnetic field. It was found that the application of the high magnetic field could increase the concentration of Si in the primary Al and Cu in the primary Ag at their eutectic temperatures, but could not obviously affect the Si concentration in the primary Al at room temperature. The above increase can be attributed to the weakness of the solute diffusion at the liquid-solid interface during solidification caused by the high magnetic field.
The Innovation Design of Electric Forklifts Based on Direct-Drive Equipment
Authors: Ge Qing , Wang Yin
Published: December 2011

The domestic electric forklift market is big. After meeting certain conditions, the direct-drive equipment can improve many shortcomings of ordinary electric forklift to offer new opportunities of innovative design for electric forklift. The innovation design of electric forklift based on Direct-drive Equipment is mainly in three areas: appearance innovations design, functional structure innovation design and technical innovation design, which can be applied to all electric forklifts based on direct-drive equipment and has broad market prospects.
Study on the Natural Vibrations of the Rubber Bearings
Authors: Li Fang , Yang Xue , Shuai Chang Geng , He Lin , Li Ming
Published: December 2011

The noise of the rubber bearing is closely related to its vibration characteristics, thereby, the study of the natural vibrations is of an important significance for the safety of the warships. Based on the finite element method, this paper analyzes the effect of the structural parameters and material properties on the natural vibrations of the rubber bearings, the numerical results show that in the low frequencies its vibration modes mainly present the shear deformations in its center of the rubber strip. The influences of the variations in the thickness of the built-in steel bars on the natural frequencies are larger than that in the width, and the variations of rubber materials’ mechanical properties on the natural frequencies are remarkable. Thus, increasing the elastic modulus of rubber material will effectively enlarge the value of the natural frequencies, as well as improve their intensive distribution.
Optimization of Solid State Fermentation Media for Soluble Dietary Fiber Production by Hericium erinaceus
Authors: Yu Xiao Hong , Gu Zhen Xin , Tu Kang , Shao Rong , Jin Xin Jiang
Published: December 2011

In this paper, the optimum media supplemented to the basic substrate wheat bran (WB) for getting maximum soluble dietary fiber (SDF) production under solid state fermentation (SSF) by Hericium erinaceus was investigated. Soybean meal was suitable for mycelial growth as nitrogen source, four inorganic salts (KH2PO4、ZnSO4、FeSO4 and MgCl2) could increase SDF production significantly. Artificial neural networks (ANNs) and genetic algorithms (GA) formalisms were used for modeling the non-linear relationship between the fermentation media and SDF production and optimizing the model, respectively. After optimization, parameters of the five media supplemented to WB were (mg g-1 WB): soybean meal 124.3, KH2PO4 0.18, ZnSO4 0.6, FeSO4 0.2, MgCl2, 1.2. The SDF production increased to 13.06±0.51 g 100g-1 in the validation experiment, which was 4.68 fold as compared with control.
Analysis of Vibrating Natural Frequency of Pressure Pipeline
Authors: Hao Ting Yue
Published: December 2011

The pressure pipeline is simplified as the beam model with two simple supported ends. The mathematical model is established, considering influence of the fluid-solid coupling vibration. Then the critical flow velocity is obtained by calculation and solving. By analyzing the practical numerical example，the influence of physical parameters on the first three-order natural frequency is discussed. Using Matlab software for programming, the instability condition of pressure pipeline is obtained, which is consistent with the result of numerical calculation.
Study of EPS Hall-Effect Torque Sensor Technology
Authors: Li Tan , Shi Guo Biao
Published: December 2011

In an electric power steering (EPS) system, it is important to make a precise and reliable measurement of the torque on the steering wheel. A non-contact torque sensor has been developed for EPS system. The sensor is based on a magnetic principle that the magnetic flux path is changed with the torsion of a torsion bar which is placed in the steering shaft. The change of magnetic flux density in the working airgap is detected by a standard Hall-effect IC. The sensor has broad prospects for its good performance, simple structure and low cost. This paper introduces the torque sensor’s working principle, analyzes the magnetic circuit by 3D simulation, and concludes its key technologies and development trends.
The Research of the Main Control System of Large Die Forging Press Based on the Single Neuron Adaptive PID Control of Quadrics Performance Index the Learning Algorithm
Authors: Yang Ji Dong , Chen Xin
Published: December 2011

This paper studies algorithm of the giant die forging press control system of main loop, based on the national major science and technology project (2009ZX04005-011).Finally the design of the main oil system of Large die forging press is based on the single neuron adaptive PID control of quadratic performance index the learning algorithm. This system uses the system view. In the theory of controlling, the control model of each part is hard to be precise. We can also get relatively precise system using the method of system. In this paper, this system simulates in the MATLAB. The simulation results show that the control system has the high response speed, higher stability precision, strong disturbances ability, strong robustness and adaptive ability.
Research on Deformation Measurement Technology of Large Dams
Authors: Li Fu Bao , Li Zhong Ke , Li Qin , Liu Bo
Published: December 2011

Abstract. This study describes the basic methods to measure the large dams deformation using vertical coordinates and analyzes the lack of the structure of commonly used CCD vertical observation instrument, and using the principle of application computer stereo vision, a new CCD vertical observation device structure has been proposed. It also designs the CCD drive circuit, CCD data collection and communication circuits, and proposes the calculation method of instrument calibration and the vertical coordinate.
Research about Hydraulic Cylinder Test Bench Based on PLC
Authors: Su Dong Hai , Yang Yang
Published: December 2011

A new type of hydraulic cylinder test bench is presented. Hydraulic technology, microelectronics technology, sensing detection technology, computer control and modern control theory are applied in the system. On the basis of hydraulic principle, the way of PLC’s usage is elaborated by the example. To increase the system’s automation, proportional valves are added.
The Study of Navigation Light Cable Communication Based on OFDM
Authors: Wang Xiu Yan , Wang Jin Lin , Lin Jia Quan , Li Zong Shuai
Published: December 2011

Navigation light monitoring system is designed to detect the working condition of each light with circuit cable carrier. However, the real-time detecting information could be inaccurate as a result of the existence of disturbances such as noise, multi-path effect and channel decline, when the data transmission happens in light cable as the channel. In this paper, OFDM (Orthogonal Frequency Division Multiplexing) is presented to be used in circuit cable communication. And the reason and capability of the resistance to these disturbances in OFDM are analyzed. Finally, the result is concluded that OFDM used in navigation light cable channel is feasible.
Study on Integral-Separate PID Improved Predictive Control for Electro-Hydraulic Control System of Strip Steel CPC
Authors: Ye Xiao Hua , Cen Yu Wan , Ye Jing Jie
Published: December 2011

As electro-hydraulic control system of strip steel CPC has some special characteristics, such as strong nonlinear, changes in structural parameters, serious time-delay and the very difficultly of establishing accurate mathematical model, the integral-separate PID improved predictive control algorithm was proposed on the basis of the new mathematical model. Firstly, the integral-separate PID algorithm was used to make system asymptotic stability and reduce overshoot of system. Secondly, the predictive control algorithm was proposed, error feedback correction model was improved, and predictive control signal was optimized with rolling method. Finally, the system was simulated and analyzed in noise and pulse disturbance. The simulation results show that this algorithm can effectively improved abilities of anti-noise and anti-load disturbance, increases robustness and tracking capability of strip steel CPC system; furthermore, it can improved speed of system response and decrease time-delay and overshoot of system. Therefore, this algorithm can well meet the need of electro-hydraulic control system for strip steel CPC system.
Application of Wireless Data Transmission Technique in Drying Equipment
Authors: Mai Zhi Wei , Li Chang You , Zhang Ye , Xu Feng Ying , Li Jian Min
Published: December 2011

The application of online detection technology for grain moisture is one of the most effective ways to improve the quality of grain drying. The online detection system for grain moisture consists of three parts: online remote module of ingoing grain moisture (charging), online remote module of outgoing grain moisture (discharging), and the host controller. It adopts JZ873 wireless transparent transmission module to realize the wireless data communication among various modules, and to formulate the communication drive. In practice, this system has characteristics such as flexible use, reliable data transmission, and it is more suitable for those testing and control conditions where it is inconvenient to wiring.
Study on Plasticity Shaped Technics of Speed-Down Gears of New Type Tractor
Authors: Yu Jin Wei
Published: December 2011

Extrusion for tractor speed-down gears with big modulus have big distortion resistance , dentiform cavity filled difficulty and the service life of die low etc technology difficult problem , a method dividing the material flow in dentiform cavity of concave model was put forward ,and combining with floating die technology ,working-out extrusion new technics , the experiment results show that this shaped technics is beneficial for improving the corner filled capability and decreasing the shaped load 50% significantly, increasing the service life of die，the finished forging parts needs only a bit turning or grinding on excircle , can get qualified parts and would not harm the fibrous tissue of the teeth, have driven cold precision forging of spur gear with big modulus into practice.
Transformation of System Action for Reconfigurable Automation Work System
Authors: Rahman Muhamad Arfauz A , Mo John
Published: December 2011

The main idea of this paper is recent about the transformation of system actions extracted from the user requirement. The system actions are required before the implementation of reconfigurable automation work system. System actions are selected base on suitability of a process. Later, each system actions are matched with suitable system components to create a set of system specification. This specification is used to implement the automation system for each process. The developments of the automation work systems are limited by some constraints such as number of component used as well as the availability of component in the repository system.
Fabrication and Mechanical Characterization of a Microscale Electrophoretic Polymer Based on MEMS Technology
Authors: Yang Zhuo Qing , Wang Hong , Zhang Zheng Jie , Ding Gui Fu , Zhao Xiao Lin , Jiang Chun Yan
Published: December 2011

Microscale polyurethane modified epoxy resin film has been fabricated using MEMS tehnologies in the present paper. The effect of different process conditions on the thickness of fabricated film was discussed. The microscale film shows smooth and uniform surface morphology. The tensile test of the film by DMA indicates its tensile strength and Young's modulus are approximately 55MPa and 1.8GPa, respectively. The fracture section of the film was characterized by SEM. In addition, the interface bonding strength of the fabricated film between Ni substrate is much higher than Parylene-C and SU-8. This microscale polymer film is promising in several smart MEMS fields, especially bio-MEMS structures.
Modal Analysis for Swing-Arm of LED Die Bonder
Authors: Quan Wei Chuang , Huang Mei Fa , Wang Zhi Yue , Zhang Da Wei
Published: December 2011

Led die bonder used for bond lead frame and chip is one of the key equipment of led production line. The swing-arm is an important component of led die bonder and its dynamic characteristics will directly affect the piece accuracy. At present, the accuracy and efficiency of led die bonder are limited because of the vibration of the swing-arm. In solving this problem, a three-dimensional finite-element model for swing-arm is built to provide analytical frequencies and vibration modes. Then the modal distribution and vibration mode shapes for swing-arm are obtained after analyzing the modal by ansys10.0. Finally the dynamics effects of this structure by modal frequency and vibration mode are analyzed. The modal analysis of structural would provide the reference to dynamics analysis and structural optimization for swing-arm in practical use.
Low Cost Diffuser Based Micropump Using Pinch Actuation
Authors: Chee Pei Song , Rahim Ruzairi Abdul , Hashim U. , Arsat Rashidah , Leow Pei Ling
Published: December 2011

Planar pinch micropump with the integration of two diffuser valve elements has been reported. The fabrication of the micropump is carried out by utilizing simple hot embossing technique for microdiffuser imprinting and spin coating for membrane construction. Parameter of diffuser design is optimized via finite element analysis (FEA). The experiment result shows that the pump works well at low frequency of 29 Hz.
Implementation of Wavelet Analysis Program Using a MATLAB- Generated Dynamic Link Library in Visual Basic Programming
Authors: Hu Li Yong , Liu Shu Bo , Guo Wei Hua , Xiao Jing
Published: December 2011

Abstract: This paper describes mainly about using the technology of DLL to realize merging programming , integrating the visual interface of VB and the wavelet analytical function of Matlab. Design of simulation software shows the implementation approach provides a novel idea for the application of wavelet analysis.
Study on the Deformation of the Oil-Immersed Transformer Tank by FEA
Authors: Zhang Jian Hua , Sun Ling Yu , Zhang Xiao Jun , Li Jia Peng
Published: December 2011

The oil-immersed transformer tank is an outside package component of the transformer body. The sealing quality and mechanical strength of the oil tank are affected by the deformation after loading. In this paper, the 3D finite element model of oil-immersed transformer tank is established. The oil-immersed transformer tank deformation is obtained by FEA under the condition of vacuuming. A series of experiments about the deformation of the oil-immersed transformer tank are carried out. Comparing experiment results with FEA results, FEA results are agrees well with the experiments’. It can save the time consumed on designing the oil tank, and has the directive function for the whole design.
Gan-Based Leds Grown on Cone-Shaped Patterned Sapphire Substrates with Peripheral Air Voids by Lateral Etching
Authors: Lin Nan Ming , Shei Shih Chang , Chang Shoou Jinn , Lai Wei Chih , Ya Yu Yang , Lin Wun Cin , Hsin Ming Lo
Published: December 2011

In this study, the authors report that GaN-based LEDs prepared on 1.2μm, 1.4μm, and 1.7μm height of cone-shaped patterned sapphire substrates (CSPSS) with the formation of air voids at GaN/cone-shaped-patterned-sapphire-substrate interface by laser scribing and lateral etching with one-step MOCVD growth. With CSPSS, it can be seen that output powers were all significantly larger than that of LED with flat substrate (FS). Assisted by 20 min lateral etching, it was found that peripheral pyramid-like air-voids were formed on top of each cone of the CSPSS with 1.7μm height and the light output power increased by 13.8%, compared with the result of the CSPSS with 1.2μm height. Furthermore, it was also found that output power of LED prepared on 1.7μm height of CSPSS with 20 min lateral etching was 6.2 and 3.1% larger than those of LEDs prepared on 1.2μm and 1.4μm height of CSPSS with 20 min lateral etching, respectively.
Heavy Metal Contents of Five Kinds in Boletaceae Collected in Xichang City and the Safety Evaluation
Authors: Sha Jing Zhou , Zhang Dan , Zeng Xue Dan , Wang Ji Peng
Published: December 2011

In the study heavy metal contents (Cd, Pb, Cu, Zn, Hg) of five kinds of Boletus collected in Xichang city in Sichuan Province had been analyzed, and the content difference and food safety had also been analyzed preliminarily. Result showed that among the five kinds of boletus, the contents of Cd and Pb in Boletus griseus were the highest, which were 19.00 mg•kg-1 and 9.34 mg•kg-1 separately, and the contents of Cd and Pb in Leccinum rugosiceps were the lowest, which were 0.24 mg•kg-1 and 0.49 mg•kg-1 separately. The contents of Zn and Cu in fungal cap were higher than that of fungal stipe of all kinds of boletus. Contents of Cd, Zn and Cu in all five kinds of boletus exceeded national safety standards according to hygienic standard for edible fungus (GB7096-2003). Content of Cd in B. griseus was 95 times more than that of national safety standards; contents of Pb in Boletus bicolour and Boletus edulis exceeded national safety standards; contents of Pb in Boletus umbrinus and L. rugosiceps were in the range of national safety standards; contents of Hg in B. edulis and L. rugosiceps exceeded national safety standards; contents of Hg in B. griseus, B. bicolour and B. umbrinus were in the range of national safety standards.
Effect of α-Al2O3 Micro Powder on Performance of Porous Plug Well Block
Authors: Li Zhi Hui , Wang Sen , Li Jing , Wu Feng
Published: December 2011

In connection with broken-down mechanics of ladle porous plug well block，with tabular alundum、allitic spinel、industrial chrome oxide as the main raw material and aluminate cement and active α-Al2O3 micro powder as binder，we prepare 9 groups porous plug well block samples，for studying the species of α-Al2O3 micro powder and impact of its addition on the properties of samples．By testing room temperature flexural strength of samples、room temperature compression strength，flexural strength after sintering at 1600°C and heating for 3 hours、compression strength after burning，bulk density and apparent porosity before burning and after burning，thermal shock、high temperature bending strength and other performance indicators．The results show that，adding α-Al2O3 micro powder of multi-peak distribution in the samples，whoes granularity distributes reasonably，may have better effects of padding，and form more uniform intergranular spinel，at the same time，find that the higher the bonding strength between the grains，the higher pyknosis strength of samples，and the performance indicators are excellent．When the addition of α-Al2O3 micro powder of multi-peak distribution are 10%，compression strength of sample after burning is 132MPa，high temperature flexural strength is 14MPa，bulk density is 3.25g/cm3，and apparent porosity is 12%，also，thermal shock stability and other combination properties are the best．To meet the excellent performance that delivery needs and have higher safety factor，we may use corundum-spinel porous plug well block of longer lifespan bonding low cement．
Establishment of the Evaluation System of Economic Benefit of the Sports Event on Campus
Authors: Xu Xiong , Wang Quan Deng
Published: December 2011

Through the methods of questionnaire survey, the literature and experts interviewing, paper analyses the current situation of sports events on the campus in our country. Because of the inadequate understanding of the economic benefits of basketball games on the campus for the sponsors and the organizers of the sports event, the evaluation system of economic benefit of the sports event is established based on the basic principle of economics in the paper.
Experimental Study on the Impact Factors of Sewage Sludge Wall Slip
Authors: Li Zhen Xing , Zhang Li , Bai Ji Zhong
Published: December 2011

The influence factors of sewage sludge wall slip were analyzed by using a rotational rheometer with parallel plate fixtures and with high speed camera. The technique involves checking the gap dependence of the stress/strain data and studying the time/stress data trend of strain stepped scanning. For sewage sludge of water content 80%, in the shearing flow it was found that, as the strain amplitude increasing, the stress data obtained at different gaps, then, at certain strain amplitude, started to diverge, indicating that wall slip occurred. But for sewage sludge of water content 87%, these curves are superimpose, indicating no slip occurred. While scanned sewage sludge water content 80% at different shear rates in 5s and 60s, it found that under 5s and 60s respectively, the shear rate is greater than 10s-1 and 0.5s-1 during time/stress curves appeared peak condition, shows slip occurred.
Analysis of Influencing Factors on Operating Resistance of Machine-Soil System
Authors: Wang Jia Sheng , Yang Ran Bing , Shang Shu Qi
Published: December 2011

Based on material mechanics, theoretical mechanics and soil mechanics, the operating resistance model of machine-soil system was established. According to the model, influential factors on operating resistance can be divided into property parameters of soil, structural parameters of digging shovel and operating parameters. In order to obtain the influential laws of operating parameters and structural parameters of digging shovel on operating resistance, the model was calculated by changing the parameters. The calculating results showed that, operating resistance would increase non-linearly with the increase of penetrating angle and operating velocity. The larger penetrating angle and higher velocity, the greater increasing ratio of operating resistance. Operating resistance would increase approximately linearly with the increase of digging depth and shovel surface.
Study on the Assembly and Adjustment Technology of the Low-Speed Marine Diesel Engine
Authors: Chen Guo Jin , Liu Zhong Min , Liu Ting Ting , Su Shao Hui , Yuan Guang Jie , Cao Yi Jiang
Published: December 2011

This paper takes the high-power low-speed marine diesel engine as an object to carry out a series of technical researches. These technologies include the assembly and the precision adjustment on the components of the piston, the crosshead and the connecting rod, and the assembly and the timing adjustment on the fuel and exhaust system, the assembly and the precision adjustment on the crankshaft and the engine base. The test technology and system of the high-power marine diesel engine are studied. The new method to determine the assembly quality of the piston and crosshead based on the strain measurement for the small end of the connecting rod and the oil film thickness measurement for the crosshead and the supporting plate is proposed. The stress measuring system for the engine body is built. The engine body’s deformation before and after the crankshaft assembly and the bearing block’s deformation during the crankshaft movement are analyzed to evaluate the stress situation of the crankshaft after the installation. Therefore the assembly technology for the low-speed high-power diesel engine is improved to ensure the reliability of the diesel engine work.
Ecological Evaluation of Qingshan Lake Based on AHP Method
Authors: Zhou Zao Hong
Published: December 2011

As the object of study, Analytic Hierarchy Process(AHP) method was used for the Qingshan Lake ecological evaluation. The evaluation results show that the weights of evaluation indexes of the ecological service function is 0.64, the ecological protection function is 0.26, and the resources function is 0.1. The weight of homogenization flood function is 0.31. The weight of land resources function is 0.004. They are the maximum and minimum value in the single index divided. According to ecological evaluation criteria and standards for nature reserve, by calculating the comprehensive evaluation index(CEI=0.58) obtains the ecological quality grade is general.
Effects of Microporosity on the Tensile Properties of Aluminum Alloy
Authors: Li Xie Hua , He Li Zi , Cao Yi Heng , Zhu Pei , Guo Ya Ping , Cui Jian Zhong
Published: December 2011

The influences of cooling rate, hydrogen inflating time, degassing time, inclusion content on the distribution of pores within the ingot , hydrogen content and the mechanical properties of 1050 aluminum alloy were investigated by tensile test, optical microscope(OM), scanning electron microscope(SEM). With the increasing inflating hydrogen time, the hydrogen content increases, while, the strengths and elongation decrease. With the increasing degassing time, the hydrogen content decreases, while, the strengths and the elongation increase. With increasing cast temperature, the hydrogen content remains constant at first and increases obviously from 7200C to 7600C, while the strengths and the elongation decrease gradually. The crack is mainly originated at outcrop of slip step, inclusion and porosity.
Study on Power Consume of the Inertia-Deposition Separation Chamber with Air Suction
Authors: Wang Li Jun , Pan Zhi Yang
Published: December 2011

Based on power consume of inertia-deposition separation chamber is in the majority of pneumatic conveying system in 4ZTL-1800 rice combine harvester threshing prior to cutting, power consume of the chamber was studied by Jiang theory and G.Murphy-Jiang theory of similar theories. The experiment design on power consume of the chamber was based on the dimension analyses. The function about key parameters to affect the power consume were founded, and which can be used generally. The key parameters are the inlet pressure, the length, the height of the chamber and the length of the separation board. The result will benefit to further improve the structure to decrease power consume of the inertia-deposition separation chamber.
Test System of the Static and Dynamic Performance of the Proportional Solenoid
Authors: Xie Hai Bo , Hu Song Tao , Yang Hua Yong , Zhen Yu , Zeng Yang , Zhang Jin
Published: December 2011

Proportional solenoid is the key component in electro-hydraulic proportional control systems. The static and dynamic performance of the proportional solenoid directly affects the control accuracy, response speed and reliability of the whole system. To test the static and dynamic performance of the proportional solenoid accurately, reliably as well as conveniently, an automatic test system with the combination of the sensor and control technology is developed in this paper. The entire system consists of mechanical structure which could position the proportional solenoid and adjust the displacement, the control and measurement part whose main function is to control the motion of the stepper motor ,set the drive current of the solenoid through the proportional amplifier and collect data. The experimental apparatus allows rapid switch between static test and dynamic test through two vertically-positioned pins and other accessories, which makes this test system different from the others. The experimental results demonstrate the feasibility and the rationality of the design.
Design and Research on Micro Pure Electric Garbage Transfer Vehicle
Authors: Liu Wei Min , Zheng Ai Yun , Lu Chun Guang , Tang Yan
Published: December 2011

Based on the analysis of characteristics and Application requirements, one type of micro pure electric garbage transfer vehicle was designed. The power layout program, chassis layout and hydraulic lifting mechanism were researched to meet the driving safety need and automobile ride. The McPherson independent front suspension and the coil spring integral rear suspension were selected as the suspension program. The type of motor front and front drive was the arrangement of power system. The ladder frame chassis was selected for its high strength and low cost and the finite element analysis of frame was executed to verify the strength. The lifting mechanism was the key of the vehicle, one integrated hydraulic lifting mechanism was selected and the lifting time and angle and cylinder diameter were calculated. The tests confirm the sample vehicle being of reliable design and good performance.
Working Characteristic Simulation of Single-Cylinder Hydraulic Confined Piston Engine
Authors: Yang Dao Zhai , Zhang Hong Xin , Zhang Tie Zhu , Zhang Ji Peng
Published: December 2011

Hydraulic confined piston engine (HCPE) is a new type power system for vehicle and other moving equipments. The state equations of working process considering the coupling of fluid, solid and gas were constructed, and the initial solving conditions were given also. They were validated by test. Through simulation, the angular velocity of crankshaft has obvious pulsation in one working cycle; the fluid pressure in pump cylinder shows phase step at switching moment of inlet and outlet valve. Compared with traditional internal combustion engine driving plunger pump system, HCPE’s fuel consumption improves by 12%～42.78%, effective thermal efficiency by 13.63%～74.75%, running unevenness by 4.66%～15.57%, output pressure by 15.21%～76.61% and output flow by 0.69%～2.13%.