bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Genetic Algorithm in the Study of Semantic Modeling Design of CNC Machine Tools
Authors: Lan Tu , Tang Sheng Ju , Chen Bo , Guo De Ke
Published: February 2012

Because of the outstanding advantages of genetic algorithms in solving optimization problems of engineering design, in this paper, using genetic algorithm combined with Kansei Engineering as a optimal design method for product’s semantics modeling design, and using real-coded way to characterize shape characteristics of CNC machine tools, comprehensive accounted of user’s semantic needs and color Mido, then, established the fitness function, combined with the key components to complete the design. By case analysis shows that the method is feasible, and lays a foundation for intelligent design of CNC machine tools.
Temperature Dependence of the Morphology and Fluorescence of Eu 3+-Doped in LaPO4 Nanowires
Authors: Jin Ye , Liu Xue Qin , Feng Wen Lin , Zhang Feng
Published: February 2012

One-dimensional (1D) nanowire is one of the most important components for nanosized electronic devices’ development, sensors. Eu3+-doped lanthanum phosphate nanowire has been synthesized via hydrothermal method. The sample is characterized using XRD and SEM; SEM images show the diameter of LaPO4:Eu3+ nanowires before heat treatment is about 10 nm. After sinter, the LaPO4:Eu3+ nanowire becomes particles. The particles grow up and the luminescence intensity becomes lower with the sintering temperature going higher, while the life time of 5D0→7F1 transition is longer. It is suppose that the perfect lattice is not benefit to the dopant ions into.
Erosion Mechanism of Platen Heating Surfaces in CFB
Authors: Song Jing Hui , Wang Tao , Hu Xiao Ying , Dong Chang Qing
Published: February 2012

A two-dimensional numerical gas-solid flow models without chemical reactions is developed to simulate gas-solid flow in the fluidized bed boiler through MFIX software. Platen heating surfaces is considered in the upper of the furnace. Considering that velocity and concentration are the most factor effecting on erosion, there are three main area suffered serious erosion: (1) There is a maximum velocity at the position ( X = 57 cm, Y= 60 cm) on the right side of the wall, which will produce serious impact and erosion. (2) In the vicinity of position (X = 57 cm, Y= 140 cm) will suffer serious impact and tear. (3) As to the platen heating surfaces, the lower part which connect with flow is slightly wear and impacted. While the velocity on the right part is relatively large, especially in the corner of position (X = 24 cm, Y= 147 cm) reach a maximum.
Development of a Three-Degree-of-Freedom Parallel Workpiece Table for Ceramic Grinding
Authors: Hu Jian Zhong , Wang Min , Zan Tao , Li De Sheng
Published: February 2012

The grinding precision and the surface characteristics of the engineering ceramic are hard to control because of the hardness and brittleness. In order to grind the engineering ceramic under ductile mode, it is necessary to reduce the displacement of the grinding machine for the limitation of its stiffness to keep the grinding parameters in micro scale. A three-degree-of-freedom parallel workpiece table for ceramic grinding is developed to compensate the deformation of grinding machine caused by grinding force during grinding process. Based on the principle of negative stiffness, the workpiece table can generate a displacement which is reverse to the loading direction to compensate the deformation of the grinding machine. The developed precise workpiece table is a three degree of freedom negative stiffness controllable parallel mechanism composed of three piezoelectric actuators and a flexible parallel mechanism. Then the characteristics, such as kinematics and workspace, of the workpiece table are studied.
Kinetic Study of PZT Inertial Micro Rotary Actuator
Authors: Ma Ji Jie , Wen Jian Ming , Cheng Guang Ming , Li Ning , Jiang Yong Hua
Published: February 2012

Based by controlling the orderly changes of friction force between the PZT rotary actuator and supporting faces in mechanical way, a novel kind of inertial piezoelectric rotary actuator is proposed. the dynamic simulation model of the actuator based on karnopp friction model is established, by using matlab software, Four ordered Runge-Kutta calculation method is used to carry out kinematics simulation of the actuator, the curve of driving signal frequency、voltage and dynamic characteristics is conducted, the prototype of rotary actuator is designed and manufactured, the performance of the actuator is tested，The experimental results show that the developed actuator is characterized by large travel (360º) , good resolution (15µrad) , high speed (0.26rad/s) , and work stability. The motion theory and dynamic formulation of the actuator are proved through comparing the results of simulation and experiment.
A Simulation Study on Rod Electrode Wear in Micro-EDM
Authors: Wang Hu , Wang Yuan Gang , Wu Meng Hua , Li Xiao Peng , Liu Yu
Published: February 2012

Electrode wear has a great adverse effect on the accuracy of Micro Electrical Discharge Machining (Micro-EDM) and impedes the improvement of Micro-EDM. In this study the distribution of electric field and current density was analyzed exhaustively in order to explore the generating mechanisms of rod electrode wear by finite element analysis and experiment. Experimental results indicated that corner wear occurred first, followed by side wear resulted from skin effect and debris in Micro-EDM, which was significant in enhancing the accuracy of machining.
The Deposition and Removal Process for Micro Machining Based on Electrical Discharge
Authors: Peng Zi Long , Li Yi Nan
Published: February 2012

Based on the analysis of electrical discharge process characteristics, the principle of achieving deposition process and removal process using micro EDM is proposed. By controlling the tool electrode wear in one micro EDM system, it is easy to achieve the different machining type of deposition or removal process. Centering on the problem of tool electrode wear, the process conditions of the deposition and removal including machining polarity, machining dielectric medium, discharge parameters and the tool electrode rotation are researched detailedly. Results show that under the discharge phenomena between electrodes, metal material can be deposited to form micro structures, and the transfer strategy from deposition to removal process can be controlled easily. The machining procedure for fabrication of micro structures based on depostion and removal process are put forward. And finally, some examles with well shape and dimension accuracy are given to validate the processing ability for micro machining.
Improving Manufacturing Management with Activity Based Costing
Authors: Werner Michael L. , Xu Fu Yuan
Published: February 2012

The calculation of product cost in modern manufacturing enterprises includes assigning direct costs and indirect costs (overhead) to products. Direct material and direct labor costs can be traced to individual products or batches of products. However, because overhead is an indirect cost and benefits more than one product, it is difficult if not impossible to determine the true overhead cost associated with the overhead resources consumed to manufacture individual products produced. The factory resources included in overhead are an important component of manufacturing product. Overhead costs have traditionally been allocated to products using allocation bases which are correlated to the incurrence of cost such as direct labor hours, direct labor cost, or machine hours using one or few plant-wide allocation base for this purpose. The resulting product costs are used for external financial reporting and are also often used internally as a source of information for management decisions. The information provided by traditional cost systems is often so inaccurate it causes managers to do the wrong things. Further, traditional product costing offers little help to managers in their efforts to reduce costs. Activity based costing is a technique that allocates cost based on activities and volumes that cause cost. The use of these cost causes, called cost drivers, significantly increases product cost accuracy and also encourages managers to take cost-cutting actions that result in true cost savings to the firm. This paper will explore activity based costing and how it can help manufacturers to increase product cost accuracy and to reduce costs.
Optimization on Selective Fiber Laser Sintering of Metallic Powder
Authors: Liao Hsin Te , Le Manh Trung
Published: February 2012

Purpose – The objective of this study is to investigate the effect of various parameters on rapid prototyping parts for processes of sintering metallic powder by using fiber laser via the design of experiments (DOE) method. Design/methodology/approach – Experiments based on the DOE method were utilized to determine an optimal parameter setting for achieving a minimum amount of porosities in specimens during the selective laser sintering (SLS) process. Analysis of variance (ANOVA) was further conducted to identify significant factors. Findings – A regression model predicting percentages of porosities under various conditions was developed when the traditional Taguchi’s approach failed to identify a feasible model due to strong interactions of controlled factors. The significant factors to the process were identified by ANOVA. Research limitations/implications – Four controlled factors including pulse frequencies and scan rate of laser beams, laser power and scan line spacing with particle sizes of 5µm of the powder base material had significant influence on the sintering process. Future investigation planned to be carried out for achieving multiple quality targets such as the hardness and the density for 3D parts. Originality/value – The implementation of the DOE method provided a systematic approach to identify an optimal parameter setting of the SLS process; thus, the efficiency of designing optimal parameters was greatly improved. This approach could be easily extended to 3D cases by just including additional parameters into the design. Additionally, utilization of the normality analysis on the residual data ensured that the selected model was adequate and extracted all applicable information from the experimental data.
Influence of Ladle Purging Plug Airway on Flow Properties of Liquid Steel
Authors: Song Yan Yan , Liu Guo Qi , Li Hong Xia , Yang Wen Gang
Published: February 2012

The influence of the different airway structure on mixing time of molten steel are studied through using water model experiments. The bubble volume and velocity have been investigated through the PIV for different airway structure in the flow of 1m3/h. Results showed that with the slit distribution same, the smaller the slit width, the greater the volume percentage of the large bubbles and the average velocity of the bubbles in rising, but the shorter the mixing time. Reduce the number of the slit can lead to the volume percentage of the large bubbles and the average velocity of the bubbles in rising decreases, the mixing time extended, and it is more obvious to the mixing time to reduce the number of the inner slit. Inflatable volume<1.1m3/h, with the slit in the outer ring only and the number of slit same, the volume percentage and the average velocity of the large bubbles in rising is larger, the mixing time is reduced. Inflatable volume≥1.1m3/h, the slit evenly distribution is better for mixing.
Research of the Flow Sampling Algorithm
Authors: Liu Yan
Published: February 2012

This article presents a flow measurement sampling method based on the application group, which identify the received message and then trasmit the identified packets to the corresponding application packet sample space, after this sampling each space packet independently. Thus to ensure the network to restore the situation in the application of fine-grained has lower error rate, thereby reducing the distortion of the application distribution.
Virtual Shaping Design of Single Snowmobile
Authors: Du Qiu Lei , Jiang Xiao Wei
Published: February 2012

Virtual shaping design of single snowmobile is in close relation to a variety types of subjects, comprising man-machine engineering, art shaping, engineering technology and so on. This paper mainly discussed the chief structure design, overall graphics design and local design of single snowmobile. Simultaneously the content of virtual manufacturing of snowmobile has also been analyzed here.
Directed-Weighted Modeling of Resource Node in Manufacturing Grid and Its Application Analysis
Authors: Yin Yong , Li Yu , Lin Wei Guo , Hua Er Shi
Published: February 2012

Complex network has penetrated into numerous fields including mathematics and sciences, life science and engineering discipline, with strong interdisciplinary features. This paper applies the complex network theory into Manufacturing Grid field by abstracting multi-node network in Manufacturing Grid into complex network. Firstly, the characteristics of the direction and weight of the resource node in Manufacturing Grid are analyzed. Then, complex network modeling of resource nodes in Manufacturing Grid is launched. Some possible application such as node degree, shortest path between two nodes and role of node are discussed. Finally, typical examples of complex network, for example, the distribution of resource node degree and the shortest path between manufacturing subtasks are provided. The work of the paper supplies a new sight and approach to the research and study on Manufacturing Grid.
The Simulation Analysis of Ball Screw Pair Contact Characteristics Based on ADAMS
Authors: Yu Shi Biao , Wu Zi Yue , Xu Zhe
Published: February 2012

In the mechanical motion ,wear always exists. Different contact stress will lead to different wear characteristics. This paper proposes a method for contact force analysis. According to the Hertz contact theory and in impact function model the dynamic simulation mold is set up. Taking the recognition system with binocular visual angle ball screw pair for example, based on ADAMS and virtual prototype technology, establishment of ball screw ADAMS model and theoretically analyse the impact of ball screw pair contact force causes . In view of the main factor, get the ball contact force distribution. Analysis shows that reasonable selection of ball screw parameters can reduce the ball contact force extreme and inhibit ball screw wear ,which has the reference significance. At the same time, the research of virtual prototyping technology application provides an effective method in new product development.
Strength and Modal Analysis of Thin-Shell-Structured Vessel with Rib Reinforcement
Authors: Liu Nan , Zhang Hong Wang , Dong Xiang , Liu Jin Li , Fang Bao Hua
Published: February 2012

The Thin-shell-structured vessel with rib reinforcement is a key structure in petrochemical industry. For large scale and lightweight vessels design, it is essential to optimize the design based on the strength and modal analysis. In this paper a FEM model of Thin-shell-structured vessel with rib reinforcement was set up using Ansys software. It uses finite element programming to calculate its strength and modal numerically. The results indicate that the structure’s strength distribution, displacement distribution and situations about the first-six orders frequency of the vessel structure. Analysis of the calculation provides the numerical and theoretical supports of liquid vessels design under real working conditions.
Design and Implementation of High-Voltage Plasma Cleaning Technology for Auto Lamps
Authors: Ling Xiao Ming , Fan Duo Wang , Li De Wen
Published: February 2012

In order to solve the problems of environment pollution and human resource consumption in traditional wet cleaning process in auto lamps production, a high-voltage Plasma Cleaning Technology (PCT) is presented in this paper. The plasma cleaning system, high voltage AC power and control strategy are realized to develop the plasma cleaning industrial equipment which is used for surface cleaning and activation to promote adhesion between basement and base painting of auto lamps, and the configuration and operation rules are analyzed in detail. According to the established gas discharge model, the PID fuzzy control strategy is achieved to complete automatic control of technology process. The experimental parameters, such as electrical field, gas pressure, and some random factors, are discussed in terms of the curves from practical data. The results show that this design and implementation are feasible in industrial production. After the treatment of PCT to the surface of auto lamps within the automatic equipment, the adhesion between the base material and base painting films is enhanced to a great extent, and the quality and passing rate of production has been greatly improved.
Stiffness Performance Simulation and Testing of a New Type Integrated Suspension Strut
Authors: Jiang Hao Bin , Du Ying Jun , Ye Shen Chen
Published: February 2012

The design scheme of a new type strut was put forward, whose stiffness characteristics can undertake linkage control. The structure and basic principle of this new suspension component were introduced. According to fluid mechanics and thermodynamics, a mathematical model for the stroke dependent stiffness characteristics of the strut was established, and the stiffness characteristics were analyzed by using software SIMULINK. Then the stiffness performance bench test of the strut specimen was carried out for verification. Results show that the test results agree well with the simulation results. It is verified that the established mathematical model is correct and the stiffness of this strut shows nonlinear changes vary with the displacement of piston. When the suspension is largely impacted, the stiffness of this strut increases quickly which could restrain the wheel bouncing, body roll and vertical vibration.
Researches on Aluminum Coating by Flame Spraying on Q235 Steel Surface
Authors: Zhang Xiao Bin , Chang Xia , Han Fu Hui , Huang Wei Jiu
Published: February 2012

The flame spraying aluminum coating on surface of Q235 steel was investigated by morphology analysis, saline soak test and salt-fog corrosion test. The results shown that comparing to Q235 steel, corrosion resistance of the aluminum flame spraying coating formed was raised.
The Influence of Zirconia Substrate Temperature on the Microstructure and Adhesion of Deposited Mg Films
Authors: Mao Fei Xiong , Liu Tao , Liu Shi Wei , Yu Jing Kun
Published: February 2012

Mg films were prepared by magnetron sputtering on zirconia substrate. The surface morphology, structure and adhesion performance were determined by scanning electron microscopy (SEM), X-ray diffraction (XRD) and automatic nano scratch tester, respectively. The results show that the Mg films deposited on the substrates at 50 °C, 200 °C, 300 °C are mainly of hexagonal phase with the crystal planes (002) in highly preferred orientation that is weaken with the substrate temperature increased. After annealed at 230 °C, the quality of thin film deposited on the substrate at 50 °C can be improved as crystallizability enhanced and grain size increased. The adhesion of Mg film increases firstly, and then decreases with increasing the substrate temperatures.
Research on Dynamic Characteristics Analysis of the Whole Grinding Machine Tool Based on FEM
Authors: Guan Peng , Tao Yu , Wang Wei , Wang Wan Shan
Published: February 2012

Dynamic characteristics is the foundation of the dynamic design of the machine tool, while the key factor of establishing the accurate dynamic model of the machine tool is the treatment of the joint surface. In this paper, the whole machine tool model is built with the software PRO/ E, and the software MSC. Patran is used to mesh the finite element of super-high-speed grinder and set up the boundary conditions. Then Yoshimura method is used to determine the junction parameters and establish the dynamic model of the junction. The software MSC. Nastran is used to analyze the modal of the whole machine. At last, on basis of identifying the weaknesses of the structure of the machine tool, the paper provides a theoretical basis for the improvement of the machine tool design.
Structure and Properties of Variant Aramid Fibers
Authors: Li Chang Sheng , Zhan Mao Sheng , Huang Xian Cong
Published: February 2012

Structure and properties of variant aramid fibers were investigated. The correlation of the tensile modulus and orientation were developed in accordance with model proposed by Northolt. Combined orientation angle with paracrystalline parameter, the predicted modulus is well fitting with the experimental date using the equation proposed by Rao. It is concluded that the tensile modulus is determined by both orientation and paracrystalline parameter, especially in higher tensile modulus fibers. The line chain modulus is 236Gpa derived from the model and close to the theoretical crystal modulus.
The Integrated Digital Manufacture of Airplane Duct Based on through Process and Three Dimensional Modeling
Authors: Xu Xu Dong , Li Guang Jun , Yang He , Li Heng , Zhan Mei
Published: February 2012

This study introduces the current states and progress of the overseas digitization manufacture technology of airplane ducts, and analyzes the problems about manufacture technology of bent tubes in airplane production in China. Thus, instead of the full pattern, the three-dimensional models are proposed to conduct the NC(Numerical Controling) bending and examine the bending quality, and the integrated digitization manufacture technology of airplane ducts is developed. The key problems are solved including standardization modeling of ducts, 3D data transfering, virtual processing analysis, digital modular fixture design/manufacturing, and NC bending/manufacturing/inspection of ducts. The technology has been successfully applied into the digital forming manufacturing of airplan ducts.
Design of EFL Control System for 950 Motorcycle Based on MCU
Authors: Wu Chao , Shao Mai Dun , Ai Dong Bin
Published: February 2012

With requirements to air quality for human’s living, energy conservation and emission reduction, motorcycle emission in our country is in strict accordance with Euro III standard, while use of EFI (Electronic Fuel Injection) control system is one of the main measures to achieve the emission requirements. In this paper, 51-series MCU is applied as the core control unit for EFI control system of 950 (ml) large displacement motorcycles, which improves the dynamics and fuel economy of 950 (ml) gasoline engines. Hardware and software designs are proposed. Hardware design covers input signal processing circuit and driver circuit for EFL and software design analyzes the software control strategy in four aspects: engine work modes, fuel injection, ignition and idle speed control. The design in this paper has advantages of low cost and optimal control system performance. It not only fulfills the requirement of energy conservation and emission reduction, but also improves the performance of control system. Simulations carried out are presented to demonstrate that air-fuel ratio is controlled around ideal value, which is of great significance to large displacement motorcycle industry.
Forecast Research of Diamond Grinding Parameters Based on Multi-Variable Grey Model
Authors: Cheng Wei , Wang Gui Cheng , Liang Ping
Published: February 2012

Based on the multi-variable grey model and taking the statistical Design of Experiments result of concrete diamond grinding parameters as the data sample, a gray forecasting model of concrete diamond grinding parameters was built. In substituting the real experiment data, a verification experiment for the machining volume and grain wear forecast of concrete diamond grinding tool was conducted using grinding parameters as input value and machining volume and grain wear as output value. The example result indicated that the model can precise forecast them machining volume and grain wear of diamond grinding tool.
Optimization of Enzymatic Skinning of Catfish Nuggets Using Response Surface Methodology
Authors: Parakulsuksatid Pramuk , Wang Dja Shin , Silva Juan L. , Kim Tae Jo , Koo Tong Yuan
Published: February 2012

Abstract. Enzyme utilization today constitutes an important and essential part of processes used by the modern food industries. The objective of this research was to investigate the enzymatic skinning of catfish nuggets optimized by response surface methodology to remove the peritoneal membrane of nuggets. The effect of enzyme concentration, temperature, and time was carried out using central composite design. The response surface methodology found out that the optimized process conditions for good skinning and maximum yield were the following: (a) any enzyme concentration, temperature 42°C, time 12 min; (b) 0.15% enzyme concentration, temperature 35°C and time 12 min. This finding is important for maximize enzyme utilization on manufacture processes used by the catfish industries.
The Study of Assessment on the Environmental Adaptability of Weapons and Equipment
Authors: Yang Jing , Wang Xiao Hui , Wu Yong
Published: February 2012

High temperature, high humidity, corrosive substances in the air and a variety of fungus are devastating for the product, so how to correctly evaluate the impact of three defenses of the product is particularly important. Basing on the failure of the salt fog, humidity, and fungus, this paper will analyse the product’s failure mechanism and failure mode and then use fuzzy satisfactory optimization method to evaluate the product’s environmental adaptability in the humidity, salt fog and fungus condition.
Mass Customization Based on Energy-Saving Concept - In the New Economic Era as the Background
Authors: Xiao Tian Ming
Published: February 2012

In the new economic era as the background, explore the energy-saving advantages of the production mode of Mass Customization than the traditional production model of Mass Production.And show the implementation process of mass customization production model by an example. In the end,it is pointed that Mass Customization production model has unmatched energy-saving advantages than the traditional Mass Production production mode and should become the dominant production mode in new economic era.
Supply Chain Coordination Mechanism Based on Lead-Time Compression under Elastic Demand
Authors: Lv Qin
Published: February 2012

The optimization for profit coordination of the supply chain under elastic demand, which involves a two-level supply chain consisted of a supplier and a buyer, is discussed. Supplier supplies in JIT mode and supply chain members reduce lead-time through lead-time crashing to reduce costs. Based on game theory and the aim of minimizing the total cost of each party respectively, a two-level stackelberg leader-follower game model, in which buyer is the leader and supplier is the follower, is established. Buyer takes all the crashing cost and gives incentives to supplier to promote cooperation. A comparison is given among the profits of buyer, supplier and system after and not after lead-time crashing respectively, and the increased benefit among the three parties after lead-time crashing is analyzed, too. Finally, a numerical example and a simulation analysis are given to show the effect of the variations of the parameters on the increased benefit of buyer, supplier and system.
Determination of Residual Stress and Strain-Hardening Exponent Using Artificial Neural Networks
Authors: Guan Chun Ping , Jin Hong Ping
Published: February 2012

Through dimensional analysis of indentation parameters in this study, we propose an artificial neural network (ANN) model to extract the residual stress and strain-hardening exponent based on spherical indentation. The relationships between indentation parameters and the residual stress and material properties are numerically calibrated through training and validation of the ANN model. They enable the direct mapping of the characteristics of the indentation parameters to the residual stress and the elastic-plastic material properties. The proposed ANN model can be used to quickly and effectively determine the residual stress and strain-hardening exponent.
Optimizing Pull Production Systems with Cost Objectives by Modified Memetic Algorithm
Authors: Wang Bing Gang
Published: February 2012

This paper is concerned about the sequencing problems in pull production systems consisting of one mixed-model assembly line with limited intermediate buffers and one fabrication flow line with limited intermediate buffers. The optimization objective is to minimizing the total makespan cost in the whole production system. The mathematical models and, considering the safety inventory of the demanded parts, the method to determine the production sequences for the fabrication line according to the production sequences for the mixed-model assembly line are presented. Since the problem is NP-hard, a modified memetic algorithm is proposed for solving the models. In this algorithm, the method of generating the initial population, the local search procedures, the selection, crossover and mutation operators are newly designed. Optimization results are compared between the algorithm proposed in this paper and the traditional genetic algorithm. The feasibility and efficiency of the modified memetic algorithm is shown by the comparison results.
Based on Fuzzy Math Method to Evaluate of Reverse Logistics of Waste Automobiles
Authors: Zhao Li Fang , Zhao Shuo Guo , Gao Shu Xi
Published: February 2012

Fuzzy mathematics is a new mathematical method, which is based on fuzzy set instead of classic set and can deal with some fuzzy set things. Now it is widely used all aspects of the quality evaluation in real life. The author accumulates some experience through the research of the theory of fuzzy mathematics and investigation of reverse logistics. The existing automobiles are increasing and waste automobiles are also more and more in China. This paper uses the fuzzy mathematics method to evaluate reverse logistics of waste automobile through the reverse logistics analysis.
A Dynamic Game Model of Reverse Logistics for End-of-Life Electronic Products Based on Complete Information
Authors: Zhang Jing Min , Chen Chang Zai
Published: February 2012

Abstract: End-of-life electronic products have become a major environmental issue among countries. This is due to the growing number of end-of-life electronic products and their hazardous contents. The improper handling of their components not only causes the waste of resources, but also brings serious environmental pollution. Therefore, a reasonable construction of reverse logistics system for end-of-life electronic products is an urgent problem at present. This article introduces the importance of reverse logistics for end-of-life electronic products, and builds complete information dynamic game model about the government, manufacturers, third party reverse logistics provider and consumers. It discuss game equilibrium in the context of complete information in accordance with a certain sequence of actions, and finally obtains the decision of all participating subjects in the reverse logistics system for end-of-life electronic products. Keywords: reverse logistics; end-of-life electronic products; dynamic game
The Design and Realization of ERP System for Staff Training
Authors: Wang Yong , Li Min , Yang Xiao Jie
Published: February 2012

With the rapid development of the manufacturing industry in China, the training of ERP talents becomes a hot issue in the fields of industry and education. An ERP simulation operation system is developed from the view of person training. The simplified ERP model is realized in the simulation system. In the design of the simulation system, the SSH2 frame structure is used and the whole system is built in a modular mode. The function module of simulation system is analyzed and the system technology implementation is described in detail. The trainees can understand knowledge and skills of ERP more easily by the proposed simulation system, which means that the presented system has the positive effect on the training of ERP talents.
Efficient Mining of Skyrank Items in Recommender Systems
Authors: Huang Zhen Hua , Wang Dong , Sun Sheng Li
Published: February 2012

Mining of skyrank items has recently received a lot of attention in recommender system community. Literature [3] presents an efficient algorithm ZHYX to produce the skyrank items in one single subspace. However, in multi-user environments, recommender systems generally receive multiple subspace skyrank queries simultaneously. Hence, in this paper, we propose the first efficient sound and complete algorithm, i.e. AMMSSI(Algorithm for Mining Multiple Subsapce Skyrank Items), to markedly reduce the total response time. The detailed theoretical analyses and extensive experiments demonstrate that our proposed algorithm is both efficient and effective.
Hot Corrosion Behavior of NiCoCrAlYSiHf Coating Deposited by Arc Ion Plating
Authors: Qu Jia Hui , Guo Cean , Zhang Jian
Published: February 2012

Abstract: NiCoCrAlYSiHf coatings have been prepared by arc ion plating (AIP) on CrNi3MoVA steel ,which their microstructure and isothermal oxidation behavior at 950°C studied using SRD,SEM and EDAX. The results indicate that NiCoCrAlYSiHf coatings substantially increase the high-temperature oxidation resistance of CrNi3MoVA steel and the oxidation process was retarded mainly by the presence of α-Al2O3 oxide scale on the coating. Meanwhile, the major diffusion occured between the substrate element Fe and the coating element Co while Cr mainly distributed in the coating.
Formation of Mesophase Spheres in a QI-Free Coal Tar Pitch
Authors: Lai Shi Quan , Zhao Xue Fei , Yue Li , Li Xiao Xia
Published: February 2012

A QI-free coal tar pitch prepared by solvent extraction from a soft coal tar pitch was subjected to a series of thermal treatments at a predetermined temperature for different holding times. The development of mesophase was discussed in terms of its size and content in the heat-treated pitches. Results showed that the size and yield of the dispersed mesophase spheres in the isotropic matrix strongly depended on the holding temperatures. When the holding temperature was less than 400 °C, only a few of small spheres formed in the mesophase pitches. However, when the holding temperature was over 420 °C, the diameter and yield of mesophase spheres in the heat-treatment pitches increased progressively with increase of the holding time. Treatment at 440 °C for 4h led to 19.9 % of the yield and the average sphere radius was 4.5-100 . In the SEM photograph of mesocarbon microbeads obtained from the heat-treated pitches using soxhlet extraction. Many small flaky particles and sporadic rugby ball-shaped particles were observed as well as a large number of spherical particles.
Evaluation of Different Factors in Implementation of JIT Production System by Applying Simulation and Entropy Weighting Method
Authors: Yadollahi Ehsan , Tuah Baharudin B.T. Hang , Binti Abdul Aziz Nuraini
Published: February 2012

Competitive advantage and more profit and eliminating wastes will cause organizations to use new methods and techniques to enhance their performance and reduce the wastes and inventory in their production process. To achieve these goals, statistical methods such as simulation and mathematically method such as Entropy weighting is used to evaluate the weight and importance of factors in implementation of Just in Time philosophy in manufacturing systems. To certify the results of this research a case study is presented which is a part of production line of one company in IRAN. The result will be discussed about the effects of factors on production line and decision making process for managers.
Applying Deformation Resistance Estimation Method to Predict Nine Stand Hot Strip Mill Rolling Force
Authors: He Yan Bing , Pang Yu Hua , Zhang Jin Zhi , Zhu Li Peng
Published: February 2012

The rolling force of the nine stand hot continuous rolling production line is predicted on the base of the deformation resistance estimation method. The predicted error is turned out to be about 10% through the comparing analysis of the predicted rolling force and actual rolling force, which proves the feasibility of the forecasting model. One can get the deformation resistance without experiments by using this method, besides, this method works in a high speed.
Study on Increasing Strength of Silkworm Silk
Authors: Zhang Guang Xian , Ju Hong Mei , Zhang Feng Xiu , Jing Lin Xiao
Published: February 2012

In this paper, the raw silks were soaked in NaSCN solution, and drown to increase the broken strength. The result showed that after the raw silk was in NaSCN solution, the silk could be drown 1.46 times. The broken strength of the drown silk increased greatly. But the broken elongation decreased greatly. The washing process could increase the broken strength of drown silk. After the drown silk was washed with worm pure water, the broken strength of the drown silk could reached to 0.72 GPa, and the broken elongation recovered very well. The FT-IR spectra, DSC and X-ray diffraction spectra showed the drown silk has more oriented β-sheet crystalline structure, and the thermal decomposition temperature of drown silk increased 10 oC than normal silk. The results showed drowing silk is an efficient method to increase the strength of the silkworm silk.
A Multi-Resolution PID Controller Based on the Wavelet Transform
Authors: Yao Cun Zhi , Zhang Gui Xiang
Published: February 2012

The non-linear and time-varying natures of the process together with the large disturbances of several types are the key challenge for the control design. A controller based on multi- resolution decomposition using wavelets is presented in the paper. The wavelet is used to decompose the error signal into signals at different scales.These signals are then used to compensate for the uncertainties in the plant.The controller is similar to proportional integral derivative controller in principle and application. the output from this control system represents the cumulative effect of uncertainties such as measurement noise, frictional variations and external torque disturbances which manifest at different scales. This controller better solves the nonlinear and time-varying togetther with the great disturbance.
Plastic Forming Technology of Precision Tube
Authors: Wang Bing De , Liu Ying , Wang Hai Cheng
Published: February 2012

As one of the key technologies of industrial equipment for aeronautics and astronautics or others fields, plastic forming technology of precision tube also is the important technologies for some civilian industrial fields. In this article, a few key issues and related researches on plastic forming of high-performance materials precision tube are reviewed.
The Structure Improvement Design of Turbodrill Diversion Liner
Authors: Yuan Xin Mei , Zhou Si Zhu , Huang Tian Cheng
Published: February 2012

In order to improve the work life and reliability of turbodrill diversion liner, the parametric finite element model for turbodrill diversion liner is established by using finite element analysis software, and the result of finite element analysis is shown that the maximum equivalent stress is bigger and the work safety coefficient is low. On the basis of the result of finite element analysis and the characteristics of diversion liner, the improvement scheme is put forward and the finite element analysis is carried out. The analysis result shows that the fillet radius of diversion hole drilling fluid inlet has an importance impact on the maximum equivalent stress. When the fillet radius is 9 millimeter, the maximum equivalent stress is least, the maximum equivalent stress is reduced by 34.82% compared with the original structure, and the safety coefficient reached 1.772, and the results meet the design requirement.
Study on Precision Forging Schemes of Hypoid Driving Gear
Authors: Wang Jian Hua , Chen Fu Xiao
Published: February 2012

By analyzing the characteristics and forming technology of hypoid driving gear, it was suitable for adopting fully enclosed die forging principle to form the gear. Based on different forging methods, three kinds of blank shape and corresponding forming schemes were designed. The three dimensional models of blank and die were created by the UG software. The three forming schemes were simulated by the Deform-3D software. The simulation results of distribution of equivalent stress, distribution of equivalent strain and load-stroke curve were comparatively analyzed. Then the most reasonable scheme was chosen. At last, the rationality of numerical simulation can be further verified by the optimized scheme was proved by experiment.
Research on Microstructure and Electrical Resistivity of Injection Molded Metallic Fiber-Filled Polymer Composites
Authors: Sun Xing Zhi , Cheng Yong Feng , Wu Hai Hong
Published: February 2012

The electrical resistivity of metal fiber-filled polymer composite always increases during injection molding process because the conductive fibers were easily broken down to shorter under the action of high shear stress. In order to decrease electrical resistivity of the molding, we investigated the microstructure at different layers within the molding made from stainless steel fiber-filled polypropylene and measured their resistivities. High resistive zone mediate resistive zone and low resistive zone were found within the molding. The results showed that the high resistivity zone located at the skin area of the molding where average length of filled fibers was less than other zones, and the smallest resistive zone located at the core area where most fibers preserved large ratio of length to diameter and oriented along flowing direction of the melt, and the sub-skin zone is mediate resistive zone.
Effects of Parameters on the Stability of Silicon Melt Pool in Cold Crucible Continuous Casting
Authors: Huang Feng , Chen Rui Run , Guo Jing Jie , Ding Hong Sheng , Su Yan Qing , Fu Heng Zhi
Published: February 2012

Effects of parameters on the stability of silicon melt pool in cold crucible continuous casting were discussed. The results indicate that the extinguishing of induction heating is mainly caused by the side wall feeding, low superheat degree and volume of the pool. The hot melt splashes are caused by the higher input power and uncompletely melted silicon of the dome top surface. The pool was shown to be stabilized as the raw materials were fed in the center area of the dome surface, the superheat degree and volume of the pool were properly increased, the pool was controlled in the effective heating range of the coil and the input power was set properly
Lightweight Structure Design of Refuge Chamber
Authors: Ma Li Dong , Pan Hai Yan , Wang Yun , Meng Zhi Juan
Published: February 2012

This paper quantitatively analyzed the optimal design direction of refuge chamber by simulating different sizes of major parts effecting its ability to resist blast .It obtained best match program for span of the supporting structures、thickness of supporting structure in side and length of wave sheet, aiming to a lightweight designed of the refuge chamber within safety ensure.
Electrochemical Machining Technology and its Latest Applications
Authors: Lin Guo Min , Cai Hong Zhuan
Published: February 2012

Electrochemical machining （ECM）is a kind of special processing technology which is applied widely, it is particularly suitable for difficult to machine materials, Complex shape or thin-walled parts. The principle of ECM, machining process, the electrode reaction, electrolytic processing speed are analyzed; The electrolytic processing technology and its applications are researched in detail; Research and develop directions of ECM equipment are given; The develop tendency of ECM technology is prospected finally.
Variance Distribution and Energy Featured Non-Subsampled Contourlet Texture Retrieval
Authors: Chen Xin Wu , Xie Hua Cheng , Liu Jin Gen
Published: February 2012

Non-Subsampled contourlet transform can extract image texture information more efficiently than basic contourlet transform and has been studied for image de-noising, enhancement, and retrieval situations, its low retrieval rate are still not satisfied due to feature extraction and other reasons. Focus on improving the retrieval rate of non-subsampled contourlet transform retrieval system, a new feature named variance distribution was proposed and then a non-subsampled contourlet retrieval system was constructed in this paper. The feature vectors were constructed by cascading the energy and variance distribution of each sub-band coefficients and the similarity measure used here was Canberra distance. Experimental results show that using the new features can make a higher retrieval rate than the combination of standard deviation and energy which is most commonly used today under the same retrieval time and hardware complexity.
Antislip Design of Cleaning Robot for Municipal Drainpipes with Medium/Small Diameter
Authors: Wang Feng
Published: February 2012

To overcome the disadvantages of the commonly used dredging methods for the municipal drainage pipes with medium/small diameter, a novel robot was designed to take over the human to clean the pipes automatically. In order to adapt to the narrow environment, the wheeled walking mechanism was adopted by the robot, which was prone to skid during the operation. For this reason, a new kind of slip correction device was presented in the paper. When the slippage was detected by the photoelectric encoders installed on the driving and driven axles of the mobile carrier, the device would put into operation automatically. The dual-parallelogram structure was introduced so as to obtain the better compressing effect and reduce the space occupancy. It is demonstrated that the reasonable design of the slip correction device can ensure the robot to work reliably during the whole process, therefore improve the operation efficiency greatly.
The Simulation on Flow Field of Pesticide Nozzle with Vehicle Sprayer
Authors: Zhang Fa Jun , Zhou Chang , Liu Zhong , Lei Yi , Peng Jun
Published: February 2012

A detailed simulation research on the flow field spray nozzle of 6WC-30 Y-G vehicle-mounted machine in the paper was performed, and it has been carried out the different size vortex flow length is corresponding to the atomization distribution, contrasting the effect of different on the Three kinds of different blade length size of vortex solution atomization was found , from the experimental results, it can be concluded that the spraying nozzles of vehicle-mounted machine closely related to the vortex length. It has become apparent that the result of simulation has been provided a theoretical basis for its optimization guiding to improvement.
Research on Predicting Model of Surface Roughness for Ground Engineering Ceramics
Authors: Tian Xin Li , Wang Jian Quan , Zhang Bao Guo , Li Fu Qiang
Published: February 2012

Grinding is the mostly leading machining technology for engineering ceramics. The quality of ground surface can be evaluated by various roughness parameters. And a textural analysis method based on Gray Level Co-occurrence Matrix was employed in researching the roughness of ground ceramics. The relationship between texture features and roughness was investigated through a series of surface images of engineering ceramics collected by a digital microscope. The sampling offset and total gray levels of surface images were determined firstly. Then 4 GLCMs were built up to calculate the average of texture features. And 6 parameters were fixed as main texture parameters. Furthermore, the multiple nonlinear regression theory was used to assess the relation between the texture features and roughness Ra. By statistic test and comparison, the deviation of calculated Ra and actual Ra is less than 0.25. It is shown that this relation is much satisfactory and the method may be suitable for quickly measuring the roughness of ground ceramics.