bluuebunny/crossref_metadata_2025 huggingface dataset:
Surface Morphology Simulation of High Speed Milled of Face Milling Cutters
Authors: Lin Ai Qin , Zheng Min Li , Fan Chun Guang , Yang Lin
Published: August 2011

To surface milling cutters for research object, established considering the single spindle partial pendulum milling cutter tooth surfaces of high speed cutting 3d surface morphology simulation model by using graphic matrix transformation principle and vector algorithms. Comparing the simulation and forecast of surface morphology and surface roughness with the actual machining surface morphology and surface roughness by using the workpiece simulation algorithm meshing, we verify the correctness of the simulation model. The simulation analyses the influence regularity of surface morphology and surface roughness by changing cutting parameters and geometrical parameters. This can help us choosing the reasonable cutting parameters and geometrical parameters and have significance on the actual machining. The surface milling cutters are high efficiency and good quality of cutting big plane or curved surface. With the development of high speed cutting technology, in high speed milling process, product crumbs tumor and scales thorn hardly exists, so cutter geometrical parameters, cutting data and so on will be the main influence reasons of surface roughness. In order to satisfied the quality requirements, at present, we choice tools and determine the milling parameters depending on experience but it is limited. The surface roughness of the processing components is reflected intuitively by processed surface of microscopic geometric shape. So surface of microscopic geometric shape produced by theory emulation is significant to forecast the surface roughness and selecting reasonable cutting parameters. Currently, there are some simulation method researches about surface of microscopic geometric shape. Zhao Xiao ming et al [1, 2] has researched the simulation modeling of microscopic geometric shape of ball end mills during processing; Xu An ping et al [3, 4] has researched the simulation modeling methods of peripherally milling processing; Zhang Guang Peng et al [5] has researched the inversion multiple tooth surfaces of the milling cutter surface morphology simulation and develop simulation software. But all above researches are ideal simulation of surface shape. There are few researches about simulation of surface shape on condition of spindle partial pendulum. Based on object of surface milling cutters, this article researches simulation modeling methods of surface topography on condition of high speed milling and give an account of the corresponding simulation algorithm. From the article, we also get the influence law of microscopic geometric shape depending on different milling dosage, cutter geometrical parameters and eccentric quantity and get the significance conclusion to actual production.
Research on CAD Data Format Conversion for Transport Infrastructure Information
Authors: Wang Hai Wei , Kui Hai Lin , Li Shi Wu , Li Guang
Published: August 2011

This brief introduction to the needs of the project background, the need for format conversion and conversion work-related theories. By comparing the current format has several ways of combining the actual situation of the project was based on Arcmap format conversion studies, and the converted coordinate system conversion, the registration layer, the topology of layers are discussed. Experimental results show that the format conversion, graphics conversion and the geometric consistency problem is a good solution, the data described in this article work for GIS applications and communications infrastructure to provide a reference for information research.
Research on the Fault Diagnosis Knowledge Representation and Application Method Based on Ontology
Authors: Deng Ju Li , Chen Ya Hua , Chen Guo Rong
Published: August 2011

The historical records of mechanical fault contain great amount of important information which is useful to identify the similar fault, but the structural representation and the knowledge reasoning problem are troubled that we use the historical records effectively. Aiming at the problem, the fault knowledge representation based on ontology is put forward out. Firstly, the knowledge characteristics, the ontology building significance and principle of fault are analyzed. Secondly, the fault ontology is defined and described. Finally, the applications of fault diagnosis ontology are studied in protégé. The case study shows that the fault knowledge representation based on ontology is very intuitive and efficient; it can provide us a novel way to deal with the fault diagnosis problem.
Concentration Polarization BP Model of Nanofiltration Separation
Authors: Yang Qing , Qiu Xin , Shen Xiang
Published: August 2011

In order to effectively control the influence of Concentration Polarization (CP) during the nanofiltration separating wastewater process, this study applied parameters characterization of membrane flux attenuation coefficient (mwt) and the Back-propagation (BP) neural network algorithm to simulate the development rules of CP and membrane pollution, set up CP BP Model of Nanofiltration Separation, based on the tested data of NF90. The correlation coefficient between simulation and test of the simulation BP model was over 0.99, with the absoluteness error below 1.5%. According to the model’s prediction, the separation effect of nanofiltration technology become attenuate with running time increasing in nanofiltration separating wastewater process. mwtstart raised obviously within first 0.5h in operation and stay stable after 1h. It was advised to appropriately maintain u>0.2m/s for NF90 membrane effectively controlling mwt<0.1.
Study on High Speed Cutting Technology for Green Manufacturing
Authors: Wang Xiao Jun , Yue Wen Hui , Han Zi Qiang
Published: August 2011

As a sustainable model of modern manufacturing industry, green manufacturing is one of the essential solutions of the manufacturing environment pollution problems. Green cutting technology is the base and key of green manufacturing and will be the inevitable trend of cutting technology. High speed machining technology is a kind of the advanced manufacturing technologies which have superiorities as low cost, high efficiency, good processing quality and are suitable for machining thin walled workpieces and difficult-to-cut materials, and the relative problem has attracted scholars' attention from all over the world. From the perspective of green manufacturing, research results of high speed machining hardened steels are reviewed, including cutting force, cutting temperature, selection and optimization of processing parameters and machining quality, and conclude that high speed cutting is one of the key technologies in implementing green manufacturing and cleaner production. Finally, its future works of the research are discussed.
Study on Automatic Production Line for Coating Shell Making of Refined Casting Mould
Authors: Zhu Xi Lin , Cao Jian Bo , Yu Yong , Hui An Feng , Chen Jia Jun
Published: August 2011

Traditional coating shell marking process is complex, has long production period, high labor intensity, and endangers health. In order to solve these problems, this paper studied and designed a kind of automatic production line of precision molding in coating shell making process. The production line was controlled by a single-chip microcomputer to automatically achieve the process of dipping, sanding, hardening and drying. It not only improved work efficiency and saved labor, but also reduced the body harm of workers.
Study on Safe Behavior of Electric Bicycle Braking Process
Authors: Qiu Xin , Yang Qing , Wang Sheng Hua , Yusuph Abdallah
Published: August 2011

Braking process condition of electric bicycles is crucial importance to its safe driving behavior. Based on the Newton's law and basic principle of kinematics, the main objective of this paper is to predict the reasonable range of deceleration and to analyze the maximum safe speed when operated within the non-motor vehicle lanes, then to discuss the influence of driving parameters of electric bicycles, including loading, deceleration and braking initial speed, on safe braking process. The analysis results show that the maximum safe driving speed of electric bicycle should not be more than 22km/h and the running velocity of existed electric bicycles will result in the collision traffic accident. The driving parameters of deceleration and braking original speed will impose great influence on the security braking process. By contrary, the loading parameter has nearly no effect on safe braking process. So the current specification could relax the requirements for gravity and load parameters appropriately without affecting the handling and comfort of driving conditions. The research results provide a theoretical basis for electric bicycle production standards and present a reference for the formulation of relevant traffic laws and regulations.
Development of Software System for NC Dressing Form Grinding Wheel
Authors: Ren Xiao Zhong , Xie Feng Kun , Su Jian Xin
Published: August 2011

A software system for CNC dressing involute grinding wheel was developed. When the ordinary grinding wheel was used in gear form grinding, the key was to handle the on-line dressing of involute wheel. Based on involute generation principle, an algorithm by taking straight line to approach involute with equal error was mainly studied. The NC program for dressing involute wheel was prepared by using VC++6.0 as programming tool, and wheel dressing experiment was completed. Experimental result shows that the proposed algorithm is valid，and the developed program is feasible with friendly interface. The success of this software system lays the foundation for further developing CNC gear form grinding system.
Monte Carlo Simulation of Morphology Evolution of Machined Surface
Authors: Liang Ying Chun , Hu Xing Lei , Chen Jia Xuan
Published: August 2011

Monte Carlo (MC) method is adopted to simulate the morphology evolution of machined surface. One specimen is first scratched in MD simulation, and then the machined surface is used in MC simulation. It is found that the atoms stacking on both sides of the groove in the process of nanoscratching have relative obvious migration with time, because these atoms are in high energy, unstable status. The atoms are moved to the minimum energy position by repeated Markov moves. These atoms have an average one-atom-high migration, so quality of machined surface is definitely influenced by the factor of time. To simulate morphology of machined surface by MC simulation is both practical and meaningful.
The Parameter Design and Experiment of Active Valve with Piezoelectric Pump
Authors: Wen Jian Ming , Ma Ji Jie , Zhang Zhong Hua , Cheng Guang Ming , Kan Jun Wu
Published: August 2011

Because of the shortage of related research,active valve,as the key composing part of piezoelectric pump, had very important influence on the performance of piezoelectric pump,a new type of active valve actuated by circular piezoelectric bimorph was developed. First, active vavle based on the circular piezoelectric bimorph was designed, and the working principle of the valve was analyzed.Then,the structure model of the valve body was set up, the flow formula of the valve was established,the optimization of the structure parameter was carried out by using ANSYS software,the optimization parameter including the valve aperture of 0.3mm、the valve width of 0.5mm、the valve radius of 0.7mm were obtained. Finally, active valve was manufactured and the relevant experiment study were carried out, the experimental results showed the active valve had the maximun flow of 540ml/min, and the flow of vavle could be adjusted by changing square wave duty-cycle. The structure model and experiment results provided theoretic fundation for the structure design of valve body with the active valve.
Study on Steady-State Temperature Field and Thermal Deformation for Permanent Magnet Synchronous Motorized Spindle
Authors: Lu Yong , Gao Sheng Dong , Hao Zhao Peng
Published: August 2011

Motorized spindle thermal deformation is a major factor affecting the accuracy of high-speed machine tool, previous studies have focused on asynchronous motorized spindle, however, in this paper, permanent magnet synchronous motorized spindle is the research object. At first, the finite element model of thermal characteristics of motorized spindle is established base on its thermal characteristics analysis. The second, study on the distribution of the spindle steady-state temperature field, effect of spindle speed and bearing lubrication on thermal deformation of spindle. The results provide a strong theoretical basis for the design and use of spindle.
The Influence of Multiple Piezoelectric Effects on Elastic Coefficient of Piezoelectric Ceramics
Authors: Zhang Zhong Hua , Cheng Guang Ming , Kan Jun Wu , Zeng Ping , Wen Jian Ming
Published: August 2011

The development of new materials and the performance improvement of existing materials become an important subject from different aspects. In this paper, based on the theoretical research results of multiple piezoelectric effects, the influence of multiple piezoelectric effects on elastic coefficient of piezoelectric ceramics is studied. Theoretical analysis indicates that it is multiple piezoelectric effects that make piezoelectrics have two kinds of elastic and they result in the decrease of elastic compliance coefficients. Experimental validation is performed through PZT-5. Experimental results show that elastic compliance coefficient grows decreased by 0.912 times.
Research on Modeling Mapping Relationship between Cutting Load and Spindle Motor Current
Authors: Li Xi , Feng Dan Feng
Published: August 2011

The relationship between cutting load and motor current of CNC machine tools is an important part for research in intelligent control system. In this paper, the process of processing the error spindle current signal averaging, filtering, signal preprocessing, At the base of feature analysis and extraction, using system identification theory get the mapping model from current of the spindle to cutting load. Finally, the actual cutting data used to verify the model is reasonable.
Design Consideration for Precise Cable Drive
Authors: Lu Ya Fei , Fan Da Peng , Sheng De Jun , Zhang Zhi Yong
Published: August 2011

A brief overview of previously built Electro-Optical Tracking system reveals a trend toward smaller, more agile systems. Steel cable drive technology is an alternative to gearbox, belt and pulleys, chains and sprocket and other currently available transmission for several significant advantages, which includes backlash free, high stiffness, high efficiency, no lubrication etc.. As a new type of drive form, there were several key tradeoffs for the cable drive application, which will be developed and subjected in detail in this paper. Firstly Transmission principle and properties of cable drive is studied. Secondly, related design considerations of cable drive will be implemented and researched in detail, including the cable selection and capstan design, cable-groove matching strategy and cable tensioning design. Finally, actual application example of precise steel cable drive is presented for an Electro-Optical tracking gimbals, and performances tested validate the significant advantages of precise cable drive technology.
Microstructure and Electrochemical Properties of Foamed Ni-Mo Alloy by Pulse-Electrodeposition
Authors: Xu Hong , Li Ning , Chen Wei Zeng , Jing Bao De
Published: August 2011

A variety of foamed Ni-Mo alloys coatings have been obtained using pulsed electrodeposition technique. The deposit is mainly composed of amorphous structural through the X-ray diffractions (XRD), the morphology clearly contains large amounts of multi-bubble pore structure with pentagonal or hexagonal skeleton structure and obviously stratifys through scanning electron microscopy (SEM) experimentals. This pentagonal or hexagonal skeleton structure and obvious stratification has a larger surface area. The electrolysis experiments show that such foamed alloys have a low hydrogen evolution overpotential and a better corrosion resistance in 25°C, 7mol·L-1 KOH alkaline solution.
Improvement on the Anycast Routing Algorithm Based on Genetic Algorithm
Authors: Li Min Shuo , Liu Hua Wen
Published: August 2011

Anycast routing can raise the QoS of networks and offers load-balance, it is the leading issue in the domain of computer, electric and communication. With the study of the anycast routing algorithm based on genetic algorithm, we put forth an improved anycast routing algorithm in the thesis. Through a lot simulation experiment on simulating platform, we compare and evaluate the performance discrepancy of the improved algorithm and the old one. The improved anycast-routing algorithm befits large-scale network, can satisfy the demand of the development of the net, It has more competent application merit.
Laboratory Properties Evaluation of Wearing Course Asphalt Mixtures Incorporating RAP Materials
Authors: Chen Lan Yun , Qiu Xin , Wang Xin Kuan , Yang Qing
Published: August 2011

Using RAP to reproduce new mixtures helps to reduce new material consumption, minimizes the exploitation of natural resources and brings vast benefit in land conservation and environmental protection. The main objectives of this study is to conduct laboratory tests on RAP mixtures with different RAP content, to comprehensively evaluate their engineering characteristics, then to recommend the best suitable RAP mixtures as the local paving materials.
A Research Based on the Deep Self-Balanced Hydraulic Pump
Authors: Jing Bao De , Lv Bin Bin , Pan Zeng Jun , Yi Long , Gang Zhu Ge , Jiang Jian Yu
Published: August 2011

The article will give information about the status of sea water pump technology research, carry out the analysis of the water pump slipper, piston and water pump housing and other key parts of hydraulic pumps, and finally make some optimization and innovation. In addition, there will be a mathematical model simulation for four major friction of the hydraulic pump sea water through the MatLab . The simulation results of the design of water hydraulic pump has a certain significance.
Analysis Geometric Precision of Workpiece and Geometric Errors Model of 5-Axis Machining Center for Processing Turbo Molecular Pump Rotor
Authors: Zhao Wu , Wang Guo Ji
Published: August 2011

The research investigates two kinds basic problems during the precision processing about turbo molecular pump rotor using 5-axis machining center. The one is to study the geometric and dimensional precision of turbo molecular pump rotor. The other one is to study the accuracy evaluative factors of 5-axis turbo molecular pump rotor machining center. For improving the processing precision to ensure the dynamic symmetry and geometric symmetry of the turbo molecular pump rotor, it focus on analyzing the allowable deviations from the turbo molecular pump rotor’s nominal geometry and dimensions specified during the design stage by defining tolerances on the part’s features using geometric dimensioning tolerancing standards and homogeneous transformation matrix. The geometric and dimensional errors deviation model of this feature can be represented by a HTM Hq. From the errors of the machine tools, using rigid body kinematics techniques and HTM, the systemic geometric volumetric error models are established for error synthesis. Volumetric accuracy model can be verified effectiveness better estimation of machine performance, by means of physical simulation and measurement.
Design and Implementation of Engineering Graphics Computer Practice and Examination System that Based on Visual Basic
Authors: Zheng Su Yi , Li Xiao Mei , Feng Xiao Yu , Li Chen Jian , Lu Xi
Published: August 2011

With the popularization of computer aided teaching in colleges and universities, practice and exam by computer has become an inevitable trend of engineering graphics ability. This paper introduces the research and design exam system that based on Visual Basic 6.0, the software development platform, mainly discusses how to develop, and introduces its main function that can be realized.
Non-Contact Vision Inspection System of Geometric Dimension Based on LabVIEW and IMAQ Vision
Authors: Wang Bin , Zhang Ke , Liang Mei , Luo Wei
Published: August 2011

This paper researched on the characteristic of circle, line and area of 2-D mechanical parts. The non-contact vision inspection system is based on labVIEW and IMAQ Vision, and the main hardware include GIGE camera, image acquisition and the NI PXI-1042 platform. The system uses image processing and analysis technology, such as image filtering, smoothing processing, local enhancement and edge detection to complete the work of size measurement. According to the contrast testing results, this system has characteristics of less time-consuming, quick inspection speed and high measurement accuracy, which completely satisfies the requirements.
Research on Hardware-in-the-Loop Missile Weapon System Simulation Based on HLA and Modelica
Authors: Bao Jin Song , Feng Hong Kui , Wu Dian Liang , Ye Jin
Published: August 2011

To improve the maintainability, scalability, and reusability of models in complicated Missile Weapon System simulation, the system of a hardware-in-the-loop (HIL) simulation system based on high Level Architecture (HLA) and Modelica is designed, which can satisfy the need of interoperability among federates, and the simulation model library of missile based on Modelica is developed. Simulation application of missile trajectory and scene simulation is devised and is introduced into the federation to achieve the interaction between them and other federates. New simulation application incorporated with latest simulation technology can easily be introduced into the existing simulation system if they are in accordance with the HLA standards. The scene simulation application provides developers with a visual method to assess the performance of the system, which works as a federation in the HLA-based system. The results of missile trajectory simulation and scene simulation are given. The reusability of Modelica-based missile model provides designers with great flexibility and reusability in developing new missile models.
Hierarchical Structure Model of High Speed Milling Hardened Steel
Authors: Jiang Bin , Yao Hong Jun , Xia Dan Hua , Li Ying , Xu Hong
Published: August 2011

In high speed milling hardened steel, cutting performance of cutter is uncertainty because hardness distribution and machining elements change. Based on the experiments of high speed milling hardened steel, the interaction among cutting force, cutting temperature, cutting vibration, processing surface quality and machining efficiency is investigated by means of interpretative structural modeling method, hierarchical structure model in high speed milling hardened steel is founded, optimization design method of high speed milling performance is proposed. Results show that uneven distribution of hardness swells the interaction of machining elements, and causes cutting vibration and processing surface quality mutations. Hierarchical structure model reveals the relationship between control variables and performance index in high speed milling hardened steel, it helps optimization of process parameters, restrains cutting vibration in high speed milling automobile mould, and improves processing surface quality and machining efficiency.
The Optimization of Ball Milling Method in Preparation of Phenolic/Functionalized Multi-Wall Carbon Nanotube Composite and Comparison with Wet Method
Authors: Taherian Reza , Moradzaman Mozhgan , Hadianfard Mohammad Jaffar , Golikand Ahmad Nozad
Published: August 2011

This paper focuses on the optimization of ball milling as a dry mixing method and comparison with the wet method for manufacturing phenolic/multi-wall carbon nanotube (MWCNT) composites. In the ball milling, the effect of milling-time on the properties of composites containing functionalized and pristine MWCNT in two MWCNT concentrations has been investigated. At first in the wet method, polymer was dissolved in acetone and then mixed with MWCNT by sonication method. Also, the effect of functionalization by use of acid nitric refluxing was considered. The material properties were characterized by the DSC, FTIR, Raman, electrical conductivity, SEM, TEM and bending strength analyses. The results of electrical conductivity and bending tests showed that the best time for ball milling is about 2 hrs. In addition, functionalization had a positive effect on bending strength and a negative effect on electrical conductivity. The results of DSC indicated that the composite manufactured by ball milling method resulted in more thermal stability than that manufactured by the wet method. It was also shown that the functionalization increases the thermal stability; however, the increasing MWCNT concentration leads to agglomeration, thereby decreasing the thermal stability.
Free Vibration of a Thin Shell Structure of Rectangular Cross-Section
Authors: Chen Yue Hua , Jin Guo Yong , Liu Zhi Gang
Published: August 2011

This paper presents an analysis on the free vibration of a shell structure of rectangular cross-section. The shell of rectangular cross-section is modeled by four rectangular panels elastically connected at right angles under general boundary conditions. With the general boundary and coupling conditions accounted for several groups of linear springs, the double series solutions for both flexural and in-plane vibrations are obtained by employing the Rayleigh-Ritz method and the validation of the calculations is proved by comparing the eigenpairs with the Finite Element Method results. It is shown that the mode shapes of the rigidly coupled model perform a symmetrical feature.
Research on Modeling and Realization of Processing Action for Cloud Manufacturing Mode
Authors: Li Ling Li , Gang Zhao , Gu Han Fen , Zhao Yang
Published: August 2011

The modelling and realization of processing actions are investigated based on the cloud manufacturing mode. It can facilitate the manufacturing services for process engineers. According to the minimum machining cost principle and the shortest process time principle, the realization of processing actions is carried out. The architecture of the reasoning of process behaviors is constructed, and then the subsystem for supporting processing actions is developed. The auxiliary subsystem is available as an accessory of the machine tool.
Mechanical Properties Identification of Viscoelastic/Hyperplastic Materials Using Haptic Device Based Experimental Setup
Authors: Tabakci Alican , Konukseven Erhan Ilhan
Published: August 2011

Mechanical behavior simulation of viscoelastic materials is a difficult task. In order to obtain accurate simulations, material model should be well chosen and hyperelastic characteristics of the viscoelastic materials should also be incorporated in the model. Once the material model is selected the coefficients can be identified with the help of mechanical tests/experiments. The main goal of this study is to optimize material model’s coefficients by using the designed indenter test setup results and inverse finite element modeling. Indenter test setup was designed by using a haptic device, force sensor and data acquisition card to test the mechanical properties of the viscoelastic/hyperelastic materials. Inverse finite element modeling method is used in order to model the materials according to their material characteristics. The model obtained from the analysis was optimized by using the data obtained from indenter tests. The conformity of the chosen model and the tested materials is shown by inverse finite element modeling and the material model coefficients are proved to be identified correctly.
Using TRIZ Methods in Product Design and Improvement of a Presenter Mouse
Authors: Hu Shu Jen , Su Ling Huey , Lee King Lien , Chen J.C. , Huang An Chi
Published: August 2011

This research concerns the design of a presenter mouse which is currently available, and applies the theory of inventive problem solving (TRIZ) design method to carry on the improvement and design of the product. The objective is practicability and functional improvement of a wireless presenter mouse, letting it combine the principles of human factors engineering so that possible discomfort induced by long time operation can be lightened. Finally, Pro/Engineer and Photoshop drawing software is applied to finish the design drawing of two mice, one for males and one for females.
Polarity Dependence of the Electrochemical Discharge (ECD)
Authors: Karnik Madhuri , Ghosh Amitabha , Shekhar Rajiv
Published: August 2011

The present study attempts to investigate the polarity dependence of ECD by studying stagnant electrolyte cell (SEC) and the cell used for fused deposition through electrochemical discharge (FDED). Both the cells had identical electrodes and composition of electrolyte. It was judged on the basis of colour of the discharge, voltage gradient developed near the electrode at which discharge takes place (active electrode). It was revealed that the discharge at anode was an arduous phenomenon in both the cells. ECD occurred when the voltage gradient of 106V/m was developed near the active cathode in the SEC as well as the one in FDED cell. But it took voltage gradient of 107V/m for the discharge to take place at active anode in the SEC. ECD never took place at the anode tip in the FDED cell as the voltage gradient never reached 107V/m even at the applied voltage of 300 V. The bluish green coloured discharge took place at the cathode in both the cells whereas bright yellow coloured discharge took place at the anode in the SEC.
Development of the Sliding Frication Tester under Vacuum and Cryogenic Environment
Authors: Zhang Feng , Wang Li Qin , Song Bao Yu , Zhao Qi , Shang Quan
Published: August 2011

In order to investigate the material and lubrication of the moving parts of a space probe, a sliding frication tester was developed under vacuum and cryogenic environment. The tester includes the following four parts: driving system, loading system, measuring system and refrigerating system. A computer program was also developed to acquire and record the experimental data. Friction coefficients of component pairs of material GCr15-GCr15 were tested in different environments on the tester. The results show that in terms of the friction coefficient and life of the friction pair under vacuum and low temperature environment, the pairs with vacuum grease are far better than that without grease. The tester meets the design requirements.
Atomistic Investigation of Thermal Effect on the Shear Deformation of Single Crystal Copper
Authors: Ma Xiao Chun , Yin Ji Hui
Published: August 2011

The thermal effect has pronounced influence on deformation behavior of materials at nanoscale due to small length scale. In current paper, shear deformation of single crystal copper is simulated by molecular dynamics simulation, and special attention is paid to the thermal effect on the deformation behavior of material and mechanical response. The result shows that the plastic deformation of material during shear deformation is dominated by dislocation activities. Both the yield strength and shear strength have strong dependence on temperature due to thermal effect.
Preparation of Ferrofluid Sealing Ship Stern Shaft and Design of its Seal Structure
Authors: Yang En Xia , Liu He Ping , Qin Tao
Published: August 2011

Ferrofluid is prepared with the chemical method in order to seal the ship stern shaft. Three types of ferrofluid are obtained. Their magnetic particles all are Fe3O4, but their base solutions are separately water, oil and fluorine ether oil. Experimental results show that the value of saturated magnetic intensity of oil based ferrofluid is higher than the others, and its seal performance is better. Viscosity and density of fluorine ether oil based ferrofluid are the highest. Under the effect of the additional magnetic field, the pressure drops of water or oil sealed by water based ferrofluid are all lower, but the pressure drop of water sealed by oil based ferrofluid is close to an ideal value. Therefore, it has practical value that oil based ferrofluid is used as sealing liquid of ship stern shaft.
Environmental Impact Assessment of Lighting Products
Authors: Casamayor Jose Luis , Su Dai Zhong
Published: August 2011

There is a growing demand for products with low environmental impact due to current and upcoming environmental regulations/policies and increased environmental consumer awareness. Thus, integration of tools, methods, techniques for sustainability into design processes is becoming essential to design greener products. This paper presents a novel environmental impact assessment of lighting products’ conducted at the design stage, with the support of Life Cycle Assessment methods and related tools including Software Simapro. Two lighting products are used in the assessment, the results showed that one of the lighting products had less (total) impact on the environment than the other one, the main difference of impact between both products was located at the manufacturing phase, and their transport and use phases have higher impact within the life-cycle of the products.
Dynamic Response on Stiffened Plate Subjected to Air Explosive Loading
Authors: He Jian , Wang Ben Yang , Zhu Ming Wei , Sun Hui Zhao
Published: August 2011

Stiffened plate is a common structure form in plate and shell structure. There are important theoretical significance and project application value on studying dynamic response of stiffened plate subjected to air explosive loading. The motion equation of orthotropic plate which subjected to explosive loading is established adopting Lagrange’s equation of motion, and the stiffened plate where the stiffener is arranged uniformly is treated as textural orthotropic plate. Then the motion equation of the orthotropic plate is converted into motion equation of the stiffened plate. Therefore the maximum deformation of stiffened plate can be determined.
Defining and Describing Human-Powered Products: Exploring Diverse Applications of Future Technology
Authors: Johnson Paul , Shin Hyunjae , Harmer Luke
Published: August 2011

The research has monitored both real time and concepts of human-powered products (HPP) ranging from conscious user interaction and fun concepts, to parasitic harvesting concepts. These ‘products’ have been characterised and mapped onto an ‘Interaction Map’ which is defined and described by two intersecting dimensions: one is defined by a sub/conscious user interaction and the other is defined by the mechanism of the product. This paper presents the results of a case study conducted with first year product design undergraduate students at Nottingham Trent University in January 2011. Students were briefed to select an electronic product and (re)design it into an interactive ‘off the grid product’, where its functional power is not being supplied by neither the power grid nor any kind of technology driven power units such as photovoltaic power cells. The results produced a comparative analysis, mapping student project concepts against results from real time HPP monitoring of existing products. Many HPP concepts arose from this study, and the design approach highlighted potential applications of human-power systems, more specific form of engineering requirements, as well as insight into further potential future technological approaches for HPP.
Analysis of Feature and Welding Consideration for Metal Bellows
Authors: Wen Hung Jiun , Lo Yu Lin , Chang Kuo Hwa , Wen Fuh Liang
Published: August 2011

The design and process of diaphragms for a welded bellow was studied in this paper, which is a flexible component in a piping system or vacuum equipment. Due to a lot of interactive effects on each procedure in the manufacturing for a welded bellow, furthermore the commercial FEM software ANSYS was used to construct a 3-dimension model for the displacement and modal analysis of bellows in which extensions and natural frequencies as well as mode shapes could be observed. The mechanical feature should be considered at the practical applications, i.e., to avoid the occurrence of resonant phenomena corresponding to pump operations and fluid delivery in a piping system. For the purpose of modeling validation, the axial tensile testing machine implemented the extension experiment for welded bellows. According to the results of simulation and experiment, the difference among them could be easily detected for the feature investigation for a design-oriented systemic analysis on the development of welded bellows.
Mature Blueberries Detection Technology Based on Color Information and Neural Networks
Authors: Li Zhi Peng , Li Dong Sheng , Han Fei
Published: August 2011

The color of blueberries is not only an important appearance quality for mature blueberries, but a standard for blueberry harvesting. In this paper, through blueberry detection hardware system, blueberry color parameters in RGB image space are figured out. Then, in order to input the parameters into the harvesting system, Hue in HLS image space is carried out by neural networks.
Travelling and Steering Path Adjustment of Blueberry Harvesters
Authors: Li Zhi Peng , Li Dong Sheng
Published: August 2011

A picking and steering adjustment system for blueberry harvesters has been developed. In this paper, the main hardware and working principles of the system is introduced first, then the application of an ant colony simplification algorithm in the system development is presented. Information of virtual modeling the blueberry plant images and fruit distributions is obtained through the control system which is used as input for the ant colony simplification algorithm calculation. Then results are translated into real-time travelling path planning instructions for the blueberry harvester. The research provided technological and new knowledge support for future investigations into intelligent travelling path selection, thus playing an important role in mechanization and intelligent harvesting processes for blueberry harvesters.
Reliability Method for Strain-Based Fatigue Life Design under Random Loading
Authors: Ma Yong Liang , Qu Xian Qiang , Cui Hong Bin
Published: August 2011

A fatigue reliability method has been developed for strain-based fatigue under random loading. The adaptive kernel method is employed to establish the probabilistic random stress model. The probability-based cyclic stress-strain curve considering entire material constants as random variable is proposed. The probabilistic model of cyclic strain life relations is established by introducing a standard normal distribution. Based on these probabilistic models, the random characteristic value of fatigue life is obtained by Monte Carlo method. According to the mean value first order second moment reliability method, the probability of failure can be given out. The example of application is demonstrated.
Fuzzy Modeling to Simulate Surface Roughness in CNC Turning of AISI 1045 Steel
Authors: Kohli Amit , Sood Mudit , Chawla Anhad Singh
Published: August 2011

The objective of the present work is to simulate surface roughness in Computer Numerical Controlled (CNC) machine by Fuzzy Modeling of AISI 1045 Steel. To develop the fuzzy model; cutting depth, feed rate and speed are taken as input process parameters. The predicted results are compared with reliable set of experimental data for the validation of fuzzy model. Based upon reliable set of experimental data by Response Surface Methodology twenty fuzzy controlled rules using triangular membership function are constructed. By intelligent model based design and control of CNC process parameters, we can enhance the product quality, decrease the product cost and maintain the competitive position of steel.
Study on the Crash Energy Absorption Structure of a Vehicle Simulator Crash Testing Equipment
Authors: Zhang Xu , Jiang Qi , Li Li Wei , Cui Wei Wei , Cui Ji Jun , Cao Yang , Zhao Hai Rong
Published: August 2011

A kind of crash energy absorption structure used by vehicle simulator crash testing equipment based on mechanical energy storage was studied. Dynamic explicit finite element simulation was conducted for steel tube combination structure under different conditions of length, center distance, thickness, and section dimension. Crash energy absorption characteristics of the structure were obtained. After optimization, a reasonable structure was given which can meet current vehicle crash regulation. And the optimized structure can be used in vehicle simulator, which increases the practicability of the testing equipment.
Computer Aided Valve Design of Shock Absorbers Used in Vehicles
Authors: Gerdemeli Ismail , Cotur A. Engin , Kayaoglu Eren , Candas Adem
Published: August 2011

The valve design of a rear twin tube shock absorber belongs to a light commercial vehicle whose damper characteristics already known has been realized by the help of a computer program called “Dr”, and compared with the actual application results. The program gives user results about the valve parts to get the right target characteristics. After obtaining the necessary parts’ results, the needed damping performance test has been performed by the shock absorber, which has been conflated according to the program. The actual results and target characteristics were compared. ”Dr” program enables the user to select the correct parts to be used in valve system by detecting every effect on target characteristics diagram. By comparing the overall effect of the parts selected, shock absorber valve system is conflated according to the valve components obtained from the computer program.
Design and Implementation of BLDCM Driver Based on SOPC
Authors: Meng Da Wei , Lu Yu Feng , Xu Yong Ming , Wang Xi Feng
Published: August 2011

The Brushless Direct Current Motor (BLDCM) has been researched by many scholars because of its simple structure, high power density, high reliability and easy control. In this paper, a driver based on the system on a programmable chip (SOPC) is designed to implement adjustable subdivision. For SPWM, SVPWM frequency conversion control Direct Digital Synthesizer(DDS) is introduced, DDS Intellectual Property (IP) core is designed for motor control of frequency conversion. This driving system can solve the high subdivision problem, increase the driving torque and angle resolution, and smooth the motor angle. Employing the bottom-top design method, the circuit was described by the VHDL language, synthesized by integrated environment, and simulated by Modelsim in both behavior level and gate level through the PLI interface. According to experiment’s result, this driver has the advantages of easy debugging, high anti-interference ability, larger driving power, low volume and low cost in large scale production.
Design of Large Deployable Networks Constructed by Myard Linkages
Authors: Qi Xiao Zhi , Deng Zong Quan , Ma Bing Ying , Li Bing , Liu Rong Qiang
Published: August 2011

This paper investigates the possibilities of building large deployable mechanical network based on Myard linkage, a 5R overconstrained linkage. The motion configurations of a Myard linkage is first briefly introduced, and the results show that the linkage is a good candidate for forming large spatial deployable structures which can be deployed to a planar configuration and folded to a compact bundle. Three kinds of assembly ways of Myard linkages are introduced. Afterwards, two types of large spatial deployable networks based on Myard linkages with different twist angles are developed.
Application of RFID to Warehouse Management
Authors: Chen James C. , Cheng Chen Huan , Wang Kung Jeng , Huang Po Tsang B. , Chang Chih Chiang , Huang Chien Jung , Ting Ti Chen
Published: August 2011

This study presented the application of Radio Frequency Identification (RFID) technology to improve the efficiency and effectiveness of warehouse management. Fixed RFID readers and antenna were installed at the receiving/shipping dock and passive tags were mounted on either storage box or pallet. RFID system can quickly and simultaneously read multiply tags, compared to the sequential reading of barcodes by handy barcode scanner in manual operations due to the inconsistency in box sizes and the locations of barcode for items of various types. Significant improvements were observed in preliminary experiments. The numbers of pallets and items processed by each operator per day were increased by 425% and 438%, respectively. The data processing time at receiving and shipping docks was reduced by more than 90%. With RFID technology, the number of operators can be reduced while maintaining current service capacity at the studied warehouse. The benefit using RFID in the warehouse management is analyzed and promoted.
Automated Scheduling and Dispatching for TFT-LCD Color Filter Fabrication Plants
Authors: Chen James C. , Wu Ji Geng , Chen Chih Cheng , Peng Tzu Wei , Chien Hui Chien
Published: August 2011

Intense global competition and declining profit have caused most Thin Film Transistor - Liquid Crystal Display (TFT-LCD) manufacturers to increase their competitiveness by improving productivity and reducing cycle times. This research developed Automated Scheduling and Dispatching (ASD) system to automatically generate production schedules for multiple color filter fabrication plants in TFT-LCD industry. On the basis of backward scheduling and forward scheduling, ASD was developed to estimate future equipment loading and calculate order due dates according to capacity limits by taking into account the due date and size of orders, as well as the capacity, loading, and yield of fabrication plants. ASD system can assign orders to production lines, plan order release time, and balance equipment loading. Microsoft Visual Basic for Application (VBA) was used to develop ASD system in this research. Preliminary results in a case study demonstrated that ASD can efficiently generate scheduling results. ASD has been partially implemented in the studied color filter fabrication plants. Compared to manual operations for scheduling and dispatching, more than two-third time was saved by using ASD. Further improvement is under study and development.
Supply Chain Competition with Information Sharing
Authors: He Rong Yao , Xiong Zhong Kai , Xiong Yu
Published: August 2011

Given the case of two competing supply chains each consisting of one manufacturer and one retailer, we explore whether the retailers should share the market demand information they know with their manufacturers when the manufacturers do not know the same specific demand information. We also determine the optimal pricing policy and total profit for the retailers when each chain either shares or does not share market demand information. We find that sharing information is always more profitable for both retailer and supply chain.
The Evaluating Method for Module Partition Schemes of Complex Product Systems
Authors: Teng Xiao Yan , Kong Fan Kai , Zhang Jia Tai
Published: August 2011

Module partition of Complex product system (CoPS) usually produces a number of schemes, and how to choose the best one amongst the themes is very important. In this research, according to the features of CoPS, the multi-level evaluation indexes are built based on the DFX (design for X) method, which can evaluate the scheme comprehensively. The weight of indexes are obtained with the method of analytical network process. Then, the multi-level grey fuzzy comprehensive evaluation method is proposed to make the well-chosen decision based on the DFX multi-objective evaluation model. The evaluation method are illustrated using the partition schemes of the experiment platform of a bevel gearbox.
Mathematic Model Research on Panel Layout
Authors: Xu Yu Qing , Yang Zhi
Published: August 2011

The design criteria, operational frequency, operational order and compatibility are proposed and analyzed for nuclear power plant main control room. A layout optimization mathematic model is created based on these rules. Objective function of the mathematic model is developed, in which the distance of hands’ moving is added in order to measure the workload of operators. An example of 12 components on panel is implemented by particle swarm optimization.