bluuebunny/crossref_metadata_2025 huggingface dataset:
Analysis of Stress Concentration for Curvilinear Holes by Complex Variable Function Method
Authors: Li Hong , Li Guang Lei , Qiu Da Lu
Published: August 2011

A solving method with complex variable function which is fit for numerical calculation for stress concentration phenomena on an infinite plate where there are curvilinear holes is described in this paper. According to the method, the computer programs are made to study the stress concentration problems with curvilinear holes (hexagonal form and oblate form) that are often used in ship and other engineering structures. The maximum of the stresses at the edge of the holes and the distribution of the stresses under axial loading and pure bending moment are calculated respectively. Furthermore, the variations of factors of stress concentration with the different proportions of length and width for oblate holes are considered. The influence on factors of stress concentration due to the change of plate width is indicated. The solutions are consistent with the numerical results of boundary element method, finite element method and related articles.
Characteristics of Thermo-Electromotive Force, Electric Current and Electric Resistance in Intermittent Cutting Process by Face Milling
Authors: Murata Mitsuaki , Kurokawa Syuhei , Ohnishi Osamu , Doi Toshiro , Uneda Michio
Published: August 2011

Tool-work thermo-electromotive force (E.M.F.) is very important signal because it is regarded as the evidence of direct cutting phenomenon at the cutting position.Our aim is to carry out in-process monitoring of tool wear under intermittent cutting conditions. We examined the relation between E.M.F. and tool flank wear to explore the possibility of in-process tool wear detection using E.M.F. Waveform variations in E.M.F. signals corresponding to tool flank wear were observed at the starting position of cut. To determine the cause of these waveform variations, the electric current was also measured and the electric resistance between the tool and work piece were calculated using Ohm's law. It is found that the change in the tool-work electric resistance corresponds to the progression of the tool flank wear.By monitoring this tool-work electric resistance, it is possible to conduct in-process detection of tool flank wear.
Double Glow Plasma Hydrogen-Free Carburizing on the Surface of Purity Titanium
Authors: Guo Li Na , Chen Jin , Pan Jun De
Published: August 2011

A higher hardness carburized layer was formed on the surface of purity titanium by a double glow plasma hydrogen-free carburizing technique depending on glow discharge and hollow cathode effect. High purity solid graphite was used as a source cathode and purity titanium was used as the cathode materials. Experimental results indicate that higher hardness TiC phase and dissociate state carbon antifrictionphase were formed in the carburized layer. The carbon concentration and the hardness of carburized layer distribute in the gradient along the carburized layer from the surface to the inner. The surface hardness increases more than two times. Friction coefficient of Ti materials treated by hydrogen-free carburizing reduces by about 1/2.
Friction and Wear Behavior of SiCP/Cu Composite Prepared by Powder Injection Molding
Authors: Yang Jian Ming , He Yi Qiang , Li Hua Qiang , Qiao Bin , Chen Jin Song
Published: August 2011

Take electrolytic copper powder and SiC powder as the raw materials, apply powder injection moulding to prepare SiCp/Cu composite, while the test result shows that only Cu and SiC exist in the sintered composite, the SiC particles evenly distribute within the Cu substrate. The friction coefficient and the morphology and elemental composition of the worn composite surface are measured in the fiction and wear test. The result shows that the friction coefficient of composite increase in a more gentle pace with the prolonging of the sliding time; the adhesion and plastic deformation of the worn surface of the composite containing 10 vol.% SiCp is light, and there exists certain abrasive wear; while the worn surface of the composite containing 15 vol.% SiCp show obvious abrasive wear, and there exist dense mechanically mixed layer; in addition to the inherent elements of the composite of Cu, Si and C, the worn surface also contains the elements of Fe and O.
Anisotropy of Deformation Behavior of AZ31 Magnesium Alloy Sheets
Authors: Cheng Yong Qi , Chen Zhen Hua
Published: August 2011

In order to develop magnesium alloy sheets with high formability at room temperature, the anisotropy of deformation behavior of AZ31 magnesium alloy sheets produced by equal channel angular rolling were examined, which were compared with that of the sheets produced by the unidirectional hot rolling. The differences in the deformation behavior of the sheets at the rolling direction (0°), 45° and the transverse direction (90°) were discussed in term of the texture and microstructure. Compared with the as-received specimens, the anisotropy of deformation behavior of AZ31 magnesium alloy sheet produced by equal channel angular rolling was enhanced, which was following with an improved ductility and a large work hardening phenomenon. These could be due to the non-basal texture, which was induced by the continuous shearing deformation during equal channel angular rolling procedure. The fracture mechanism transferred from the cleavage fracture for the unidirectional rolling to the quasi-cleavage fracture for the sheets produced by equal channel angular rolling, which proved that the non-basal texture was in favor of the ductility of magnesium alloy.
Experimental Study on Ball End Mill in Glass Machining at High Speed
Authors: Wei Zhi , Jia Ji Hong , Gu Mei Lin , Zuo Chao , Jin Xing Zhen
Published: August 2011

This paper describes the experimental system of milling force, the tool geometrical feature and the certain experimental condition in the section of experimental case, which also makes an explanation about the designing of experimental case and the analysis of the experimental data. It also represents the relationship between coefficients associated with the milling process and the milling force applied on the tool in detail. A finite element method is used to make an explicit analysis on the stress and deformation of the milling tool under the application of certain milling force. Finally, a summary is made to conclude the study and its results.
Analysis and Experimental Research on Chemical Mechanical Polishing Flow Field
Authors: Zhou Hai , Zuo Zi Guo
Published: August 2011

By the analysis of chemical mechanical polishing flow field about substrate, it is found that the closer to the center of the substrate film, the polishing rate is more uniform; at the edge it isn’t; at the same time near the rotation axis of polishing pad, the polishing rate is little, while far away from the axis the rate is lager. It’s needed to choose appropriate ration on the speed of polish pad and the speed of substrate, in order to obtain a substrate with better flatness. The change on the speed of polishing pad affects polishing rate larger than the change of substrate’s. With PLM-2 precision polishing machine and S8030N slurry, when the rotation speed of polishing pad is 60rom, the substrate’s is 40rpm, sapphire substrate with complete lattice has been obtained. While BOW of substrate is less than 8 microns, TTV of substrate is less than 5 microns, substrate surface roughness is less than 0.5nm.
Simulation Study on Anti-Reflective Effects for Different Submicron-Structures
Authors: Tsai Hung Yin , Lu Mei Ting , Luo Shao Wei
Published: August 2011

Simulation on transmittance for different submicron-structures by finite difference time domain method is studied. The objectives of this study are to discuss transmittance for different submicron-structures. Different structures have different effects of transmittance and reflectance; therefore different sizes, shapes, periods and aspect ratios of submicron-structures are discussed in the current study. High transmittance at the visible waveband and heat insulation at the infrared range are expected for application of car window. The simulation results for flat surface and pyramid structures show that the transmittance increases from 95.7 % to 99.8 % at the wavelength of 760 nm and slightly from 96.0 % to 96.3 % at the infrared range. Though the effect of heat insulation slightly decreases while the infrared passes through the submicron-structures, the high visibility helps for car driving safety. The pyramid structure shows the optimal condition for the application of car window at the aspect ratio of 1 to 2 than other shapes.
The Finite Element Simulation and Analysis of Polymer Tube Coextrusion Process
Authors: Zhang Min , Yuan Guo Qiang , Sun Sheng , Jia Yu Xi
Published: August 2011

The three-dimensional numerical simulation model of two polymer melts flowing through the traffic circle section path was founded. The coextrusion process of composite pipe was simulated used the finite element method. The stream line method was used to simulate the extrudate swell. Such simulated results as the location and shape of coextrusion interface, the shear stress profile were analyzed. It is found that the maximum shear rate occur near the convergence section of the outer polymer. The interface excursion is less than 1mm in the die path. As the melt flow out of the die, the interface excursion increase distinctly, the value is up to 6mm. The extrudate swell rate is 21% along the radial direction.
Constitutive Equations for Graphene Based on Anisotropic Theory
Authors: Ban Shu Hao , Hu Ai Ping , Jiang Xue Dong , Li Xiao Yan
Published: August 2011

The constitutive equations, describing the relations between stresses and strains in the single layer graphene, were obtained based on the anisotropic theory. The equations showed that (1) there are 3 nonzero stress components in graphene for it is in the plane stress state; (2) there are 4 elastic constants independent in the constitutive equations describing the material properties of graphene; and (3) the normal stress merely results in normal strains if graphene in simple tension in primary directions but generates the normal strains and shear strains if in non-primary directions. In addition, the Hamilton method determining the 4 elastic constants in constitutive equations of graphene was introduced.
The Dynamics Analysis Based on Matlab for the Electro-Hydraulic Servo Drive Device
Authors: Su Xin Ping , Guo Ai Dong , Yin Fu Ming , Nie Guang Kun , Chen Jin Yao
Published: August 2011

In this paper, an applied classic control theory is adopted for the dynamics analysis for the electro-hydraulic servo drive device in which lower-powered integrative base on Matlab. The concrete measures are carried out to improve the dynamics of the system.
Theoretical Research of Aspheric Testing by Using the Digital Moiré Patterns Base on the Sub-Region Splicing Method
Authors: Man Yu Chun , Zhang Xue Jun
Published: August 2011

The grafting polymerization reaction of Hemp fibers and acrylonitrile was studied in this paper, discussed hyperchromatic solution of Hemp fibers. The morphology, structure and chemical composition of Hemp fiber after and before grafting polymerization treatment were analyzed through SEM, XRD and FTIR. Results showed that grafting percentage and dyeing percentage were all enhanced because of grafting polymerization treatment on Hemp fiber.
A Performance Evaluation of Printing RFID Tags
Authors: Xu Lei , Huang Hui Ming
Published: August 2011

Printing RFID tag is a potential substitute for etching RFID tag as it has advantages in metal waste and substrate selection due to its addictive process. An evaluation of printing tags is conducted on their performance and reliability. It is observed that low printing tag antenna resistance results from slow printing velocity, low printing pressure, high curing temperature as well as long curing time. Printing tags have an equidistant read range with etching tags in the case of low printing antenna resistance when chips are bound to printing tag antennae. Furthermore, printing tags are comparable to etching tags in the sensitivity to environmental temperature and humidity under alternative and constant temperature-humidity tests. It is also demonstrated a weaker ability for printing tags to withstand the mechanical stress than etching tags under the bend test. Experimental results show that printing tags have better performance when their antenna resistances are low.
An Estimation of Resonant Frequency of a Curving RFID Tag
Authors: Xu Lei , Huang Hui Ming
Published: August 2011

Radio frequency identification (RFID) technology may be applied to cylindrical objects, but the curving of an RFID tag brings on an increase in resonant frequency of the tag antenna. The tag can not function in an excessively curving case, since the deviation of the antenna resonant frequency from working frequency makes a reduction in inductive energy supplied by a transmitter. The variation in antenna resonant frequency is dependant upon column radius of the cylinder and curving angle of the tag. Analytically, it is found that a reduction in central distance, which is determined by column radius and curving angle, between compound straight tracks leads to the decreasing of overall antenna-coil inductance after the curving of the tag. By introducing a curving turn exponent, the overall antenna-coil inductance is calculated. After neglecting the less variation in overall tag capacitance, the antenna resonant frequency may be estimated. The result provides an instruction for designing a curving tag antenna to fit the tag antenna resonant frequency for working frequency of an RFID system.
Study on the Relationship between Plastic Viscosity and Tack Value of Picking Liquid
Authors: Yang Yong Gang , Liu Fu Ping
Published: August 2011

In order to find out the relation between viscosity and adhesiveness (tack value), different rate printing varnish was respectively added to a lemon yellow ink for manufacturing several ink samples, and then their viscosity were tested. In addition, plastic viscosities of the 13 picking liquids were measured, and their tack values under 9 separation velocities were also tested. The study result showed that the picking liquid having high viscosity may be have low tack value, but printing varnish can decrease simultaneously plastic viscosity and tack value of one picking liquid.
Modeling for Ink Permeability and Calculating the Penetration Depth inside Paper
Authors: Yang Yong Gang
Published: August 2011

To study deeply ink penetration condition inside the paper, an ink permeability model on the basis of Kubelka-Munk theory is built up in the paper, and infer out the formula of ink penetration depth, consisting of paper thickness and various brightness. And then the test value and calculation value of ink penetration depth are compared. The study results show that the two values are almost the same, so the state of ink penetration depth can be effectively estimated just by paper brightness.
Study on Residual Strength of Pipe with Single Hemisphere Bottom Defect Using FEM Analysis
Authors: Yang Zhuan Zhao , Liu Dao Xin , Zhang Xiao Hua
Published: August 2011

The stress and strain condition of the corroded line pipe with single hemisphere bottom defect under deferent inner pressure were analyzed by the Finite Element Methods (FEM) in this paper; At the same time, the residual strength models for the corroded pipe were established based on both the Von Mises equivalent stress and the Von Mises equivalent strain of the finite unit on the defect local zone respectively, the residual strength was decreased with the defect size (d/t) linearly. This way, the residual strength for the corroded pipe with a given defect size (d/t) could be conducted by using the model properly, which could help the owner make a decision when happened to the same defect in the operation. The analysis results shown that the residual strength calculation should choose based on stress when the defect depth (d/t) was less than 0.5, or else choose based on the strain when defect depth (d/t) was exceeds 0.5.
Comparative Experimental Analysis of Different Bending Methods for the Mechanical Characterization of Materials with Previous Loading History (Stress-Strain Curves)
Authors: Torres Franco David , Urriolagoitia-Sosa Guillermo , Urriolagoitia-Calderón Guillermo , Hernandez Gomez Luis Hector , Romero Angeles Beatriz , Cedeño Verduzco Vistor Fernando
Published: August 2011

Until now, the most common way to obtain the stress-strain curves for a material is through axial tensile testing. However, in recent years there have been developments on alternative methods for material characterization. In this sense, the bending procedure has proved to be a powerful technique, which allows simultaneous determination of tension and compression stress behavior by the use of bending moment and strain data. The characterization of materials by means of bending data was presented for the first time in 1910 by the German engineer Herbert. Some years later Nadai and Marin developed some research on this procedure. More recently, several researchers (Mayville and Finnie, Laws and Urriolagoitia-Sosa, et.al.) have developed diverse bending methods for the simultaneous determination of tension and compression stress-strain curves. In this paper, three bending methods are analyzed and compared against axial tensile and compressive results. It was decided to apply each one of the bending procedures to bent rectangular cross sections beams made from 6063-T5 Aluminum alloy. The specimens were annealed to eliminate previous loading history and axially pulled to induce a controlled anisotropic behavior (strain hardening and Bauschinger effect). The results obtained by two of the three methods provided great confidence and have certified the application of this new technique to characterize material.
Friction and Wear Properties of Laser Cladding Coatings under Boundary Lubrication Conditions
Authors: Feng Xin , Xia Yan Qiu
Published: August 2011

AISI 1045 steels were laser-clad with Ni-based powder by CO2 HJ-4 coherent laser. The phase composition of the laser-cladding coating was investigated by means of X-ray diffraction (XRD). The cross-section of the cladding coating was observed using a scanning electron microscopy (SEM). The friction and wear properties of the laser cladding coatings sliding against AISI 52100 steel under the lubrication of liquid paraffin containing various anti-wear and extreme pressure additives were investigated using an Optimol SRV reciprocating motion friction and wear tester. Results showed that the laser-cladding coating considerably decreased coefficient of friction and increased wear resistance in sliding against AISI 52100 steel and attributed to the change in the hardness, phase composition of the laser-cladding coating and tribochemical reactions between the laser-cladding coating and the extreme pressure and anti-wear additives.
The Numerical Simulation of Air-Cooled Plate-Fin Heat Exchanger
Authors: Jiang Xue , Bao Ji Hua , Yu Yan , Gu Ming Xia
Published: August 2011

According to the periodic structure of the plate-fin heat exchanger, 3D model of the heat exchanger is established which simplifies the computation amount of the numerical simulation on flow field and temperature field. The relationship of fluid velocity, temperature, pressure drop and heat transfer coefficient is analyzed. The flow and heat transfer characteristics can be well predicted. Based on the simulation results, the conclusion makes reference to the design of plate-fin heat exchanger.
Investigation in the Effect of Gravity on the Droplet Removal in the Flow Channel of PEMFC
Authors: Wan Zhong Min , Wan Jun Hua , Liu Jing , Chen Xi , Su Ka Lin
Published: August 2011

Dealing with a droplet on the flow channel of PEMFC, a mathematical model based on the force balance of the flow force, gravity and hysteresis tension is derived to address the expressions of the critical airflow velocity and the droplet radii. The results show that in the horizontal flow channel, the critical airflow velocity is hardly affected by the working temperature but decreasing with the increasing of operation pressure. The droplet removal capability can be enhance by increasing the tilt angle of the cell. For a small droplet, the operation pressure has an apparent effect on the airflow velocity, while for a droplet in the spontaneous departure area, this effect can be neglected.
Free Modal Analysis and Experimental Verification of a Diesel Engine’s Connecting Rod
Authors: Jiang Shao Zhong , Yan Wen Bing
Published: August 2011

Based on the combination of modal analysis technology and finite element method (FEM), the 3D model of a diesel engine’s connecting rod was established with UG software, and then a free modal analysis of it was carried out with ANSYS. Through the analysis, the inherent frequencies and mode shapes of first 5 order modes were obtained respectively. The free modes of the connecting rod were verified by testing using hammer beat method.
6-Axis Hybrid NC Belt-Grinding Machine for Heavy Blade
Authors: Liu Zi Hong , Yuan Xiu Kun , Song Dan Lu
Published: August 2011

For the weaknesses in the precision machining to leaves, the overall structure model of TX-6 CNC abrasive belt grinding machine was established by the soft of Inventor, and the grinding trajectory was planned. The finite element model, static stiffness and modal analysis of the machine were established. The design of TX-6 CNC abrasive belt grinding machine have been approved.
The Geometry and Topology Information Extraction of Workpiece and Manufacturing Feature Recognition Based on VC++
Authors: Li Jing , Zou Xiang Jun
Published: August 2011

Because of the difficult problem about exchanging and sharing products information between the CAX system and CNC machine, STEP-NC was proposed by EC（European Community）. The domestic research about STEP-NC was still in starting stage, the most of them were the second development of the software provided by the United States STEP Tools company. Based on the research about AP203 and STEP-NC standard, using VC + +6.0 as development platform, programmed directly to read AP203 file, extracted the geometry and topology information of the workpiece, automatically identified manufacturing features. It’s the foundation for the conversion from AP203 to STEP-NC programs.
Research on Automatic Segmentation Methods of Multi-Beam Waterjet Cutting Process Drawings
Authors: Yang Hui Kang , Zhao Dean , Guo Jin Liang , Zhang Jun , Chen Bo
Published: August 2011

Currently, some manual segmentation problems exist in multi-beam waterjet cutting process drawings, such as low efficiency, incomplete segmentation and so on. In order to solve the problems, this paper designs a set of criteria for multi-beam cutting process and proposes the method of partition-classification trim, then uses the secondary development tool which is embedded in AutoCAD to program three user-defined commands, and these commands can partition the drawing by region, classify and trim the entities in the cutting process drawing. Through inputting the three simple commands on the command lines, it can realize automatic segmentation of cutting process drawings. Finally, the feasibility of this method is proved by a segmentation experiment. It can effectively solve the problems which exist in manual segmentation and greatly improve work efficiency.
Research on Parametric Modeling Technology of Marine Propeller
Authors: Zhang Sheng Wen , Xu Ling , Fang Xi Feng , Liu Chuan Lun
Published: August 2011

Marine propeller is a kind of typical part with free-form surface. The surface shape of propeller blade is very complex, and it is difficult to be described by general mathematical expressions, so that the modeling of propeller is very cumbersome and error-prone. To solve this problem, firstly, three-dimensional point data of propeller blade is calculated by VC/MFC programming technology and access technology of database based on projection principle of propeller blade. And then, automation and parameterization of solid modeling for propeller of different map forms are realized by programming with the interactive programming language of UG/Open Grip based on UG software. The parametric modeling system provides accurate three-dimensional model for automatic programming, dynamic simulation and numerical analysis of propeller, and improves the design efficiency of systematic propeller, and has very good practical value.
Development of Five-Axis Machine Tool Cutting Simulation System with Nonorthogonal Linear Axis
Authors: She Chen Hua , Li Kai Sheng , Tsai Yueh Hsun
Published: August 2011

Five-axis machine tools with two additional rotational degrees of freedom provide more flexibility in tilting the tool axis to various orientations than conventional three-axis machine tools do, subsequently increasing the cutting efficiency and avoiding tool collision against a workpiece. Also, the risk of programming error can be avoided by simulating the five-axis Numerical Control (NC) code before real machining. This work presents a five-axis machine tool cutting simulation system with a nonorthogonal linear axis configuration. A window-based cutting system written by Borland C++ Builder and OpenGL is also developed based on the kinematics model of the proposed machine tool. Furthermore, implementing and verifying the five-axis NC code demonstrates the effectiveness of the proposed scheme.
The Automatic Process Design of Cutting Dosages of Mastercam
Authors: Gou Jian Feng , Jiang Yan
Published: August 2011

This design is a redevelopment of Mastercam. The cutting dosages are varies with the basic conditions, which contains parts material, tool materials, machine tool rigidity coefficient and so on .The problem is that we must modify cutting dosages one after another when the basic conditions changed. In view of the above problems, we using VB software design a specialized software. We can realize the automatic generation of cutting parameter of Mastercam by debugging this specialized software and Mastercam software. This software is convenient and practical, using it, We can save the processing time and increase work efficiency.
Resource Selection and Optimization in Manufacturing Grid Based on Genetic Algorithm
Authors: Fu Jing Zhi , Mei Ping , Shen Xiao Ning
Published: August 2011

The resource selection and optimization is the key point in the application of manufacturing grid. The limitation of the existing manufacturing resource finding methods is analyzed in this paper. Based on mathematical description of the resource selection process, a GA-based optimize model is proposed and its algorithm is designed. Finally, a typical instance is illustrated to validate the model and algorithm.
Development for Post-Processing System of 5-Axis CNC Machines
Authors: Lv Li Li , Ni Jun Fang
Published: August 2011

Post processing is to change the cutter location files into each axis motion files according to the structures of machine movements and control instruction formats. The case study of 5-axis double rotary table of the CNC machine is researched in this paper. The machine structure and the machine kinematics are analyzed to get the coordinate transformation matrixes, then specified post processing procedures of this machine are developed, the system achieves good effects in practical application.
The System Design of Graphics Library of Fixture Element Based on .NET
Authors: Zhu Guo Quan
Published: August 2011

According to the structure characteristic of the fixture design, the architecture of graphics library of fixture element is established. Based on the technologies of network, library, .NET and the developing mechanism of AutoCAD/MDT, the implemented strategy of the system of graphics library of the fixture element is presented. The remote sharing of the fixture resource information is realized. The system provides process engineer of the fixture design with assistant tools.
Quality Control Mode of Injection Parts Molding Based on CAE Technology
Authors: Dong Jin Hu
Published: August 2011

Injection CAE technology has been used very widely, but value of CAE technology in engineering application has not been fully exerted. Therefore, this article proposed the quality control mode of CAE technology control injection parts molding, and use examples expound CAE technology could playing roles in plastic parts correction, mould structure optimization and process parameters adjustment, and also proved the value of injection parts molding quality control based on CAE technology.
Strength and Fatigue Analyses on Rotor in High Speed MU Traction Motor under Different Operating States
Authors: Jiang You Ming , Zhang Yi Huang , He Yun Feng , Xiang Hui Yu , Cao Jun Ci
Published: August 2011

Considering the impact and the vibration that add to its driving system when high-speed MU running in the complex conditions, the rotor mechanical strength problems of a traction motor in MU power transmission system are studied, in this paper. The motor operating parameters when MU operating under different states, such as the starting process, the increasing voltage constant power process, and the constant voltage constant power process, are taken as the constraint boundary conditions in different situations. Considering the asymmetry of axial constraint, the distributions of both the Von Mises stress and the contact stress in rotor under different working states are analyzed, and the strength situation of rotor is evaluated. Then, the fatigue strength of rotor in a long duration rated operating is studied, and the fatigue weak position in rotor is found. The obtained results could provide a theoretical basis for the safety operation of traction motor in high-speed MU.
Tool Path Optimization Based on the Constrain of Radial Cutting Depth in High Speed Milling
Authors: Li Kai Zhu , Wu Shi Xiong
Published: August 2011

In order to decrease the radial amout of cutting depth in high speed milling,optimized arc transition has been proposed in corner milling and the circular trochoid model has been used to remove the residual. Mathematical relationship based on radial depth of cutting constrain among tool radius, trochoid radius and tool step length in circular trochoid model have been analyzed .Based on the goal to limiting the radial cutting depth, appropriate parameters have been computed for higher machining quality. To verify the effectiveness of the proposed method, a compared test has been conducted. Experiment shows that optimized tool paths cause a slight increase in machining time but obtain weaker processing vibration and superior machining precision.
The Optimized Design of Strains Transducer Elastic Component with Double Cantilever Beam
Authors: Yan Yi Fei
Published: August 2011

Abstract: The article presents the optimized design of the strains transducer elastic component with double cantilever beam. The calculation has been made by the methods of differential equations in the mechanics of material and the finite element methods.We get the maximum strain range and the best gauge position of the strains transducer. The results by the finite element methods are in accordance with the one that calculated by the differential equations. The output sensitivity of the transducer has been analysed. The load electrical capacity output of the material testing machine has been calculated.
New Digital Differential Analyzer Linear Interpolation Program and Error Analysis
Authors: Fan Xi Ying , Guo Yong Huan , Li Shun Cai , Su Xiu Ping
Published: August 2011

Common digital differential analyzer（DDA）linear interpolation error is lower than a pulse equivalent, and the output pulse along each axis is not uniform. New DDA linear interpolation flow chart was obtained by combining a quick algorithm of DDA interpolation and interpolating algorithm for pulses uniformization with common DDA linear interpolation principle. The relationship between interpolation error and pulse equivalent was demonstrated in detail. As the results shows, the new DDA with high precision machining but simple algorithm, increased interpolating speed; the new algorithm make the generation of uniform pulse series come true, which is of great importance to keep stepping motor rotating steadily without missing steps; At coordinate origin, interpolation error is lower than 0.42 pulse equivalent, while the interpolation point is not at coordinate origin, interpolation error is lower than 0.5 pulse equivalent.
Study on Machining Deformation Errors in Spiral Finish Milling of Thin-Walled Blades
Authors: Liu Wei Wei , Chen Pei , Gao Xiao Juan , Shan Chen Wei , Wan Min
Published: August 2011

In this paper, a new procedure is proposed to study the deformation errors for spiral milling process of blade, which can be simplified as a stepwise beam based on the geometry and clamping characteristics. Kirchhoff beam theory is adopted to analyze the bending and torsion deformation. The relationship between machining deformation errors and the workpiece’s geometric dimension are also established based on the simplified model. Corresponding algorithms are realized by MATLAB codes. Experiment test shows that the results predicted by the proposed model are in well agreement with measured ones.
Research of the Detection of Apple Sugar Conten Based on Machine Vision and near Infrared Spectroscopy
Authors: Fu Nv Ting , Zhao Ke , Zhao Min , Xiong Yan
Published: August 2011

In this paper, use the basic principles of near infrared to detect the spectral characteristics of apple, as the research object of Fuji apple, and then establish the model of near infrared technology forecasting apple sugar content, to discover the sugar content in apple. The results show that near infrared transmission spectroscopy can be used as an accurate, reliable, nondestructive testing method, the test has obvious advantages for detecting indicators of Fuji apple sugar.
Study on Assembly Cost Based on Product Concurrent Design
Authors: Zeng Qing Liang , Cao Lian Min , Wang Xi Wei
Published: August 2011

This thesis makes in-depth study on product assembly costs in the theoretical basis of feature mappings and cost estimation method of concurrent design. It builds up a mathematical model of feature mapping from product design domain to assemble domain, proposes a prototype system framework of assembly cost estimation and also provides theoretical and technical support for design of product cost reduction.
Study on a New Way of Aligning the Focal Plane for the Laser projection Image System
Authors: Shi Ying , Zhou Jin Yun , Lei Liang , Lin Qing Hua , Wang Xin Xing , Mei Long Hua
Published: August 2011

There has been many ways of finding out the focal plane of laser projection imaging system. However we use a new aligning way to get the optimum figure of the developed substrates through a microscope. In this paper, it is demonstrated that the range of depth of focus (DOF) changes together with the feature size in a way of positive correlation. This result can be used to figure out the shortest path to the focal plane. Thus a new way of aligning the focal plane for the LPI system is presented. We also test this system. It is found that the alignment precision is 2µm, adjustable range 2mm in the optical axis. Simultaneously the focal plane and the DOF can basically meet the demands in technical specification.
A Framework of Conflict Management System for the Virtual Manufacturing Environment
Authors: Liu Song
Published: August 2011

The partners in a virtual manufacturing organization readily incline to reduce their efforts for worrying about loses resulted from uncertainties, which might result in various conflicts among partners. It is imperative for a virtual manufacturing organization to design an effective conflict management mechanism in order to maintain the stability of cooperation relationship. Based on the analysis of the complex interaction of integrated workflow in virtual manufacturing, an extensive conflict management mechanism (ECMM) was proposed for dynamically coordinating the partners. This ECMM transforms various conflicts into the basic one between cost and expected profit of each partner, which significantly simplifies the conflicts management process in practice. In order to support the ECMM, a distributed information system with an integrated database was designed for the regionally distributed partners. The solution logic of the system expresses the logical connection of several main functions, such as the dynamic cost planning/audit, partner’s attributes, conflict analysis and solution, and profits sharing management. It is the toughest challenge in development of the information system to embed some artificial techniques into the solution logic.
Research on SOA-Based Decision-Making Support of VE Establishing
Authors: Zhang Tian Rui , Chen Yu Yu , Yu Tian Biao , Li Jian Jia , Wang Wan Shan
Published: August 2011

Virtual enterprise (VE) is representing the future development trend of enterprise organization mode. This paper introduced the creation process of VE, proposed three phase comprehensive evaluation model based on fuzzy comprehensive evaluation and ant colony algorithm (ACA) for partner selection, gave the evaluation index system model as the evaluation foundation, constructed Service Oriented-Architecture (SOA) based decision support system (DSS) framework in the process of VE establishing and running, and presented the prototype system. Through operating the system, the feasibility of the evaluation model was verified. Finally, the author also gave the development trend and suggestions of VE decision support. This article provided the corresponding theoretical and technical reference for constructing VE.
Influence of Hollow Cathode Electron Beam on TiAlN Films Prepared by Multi-Arc Ion Plating
Authors: Wu Hua , Song Li , Sun Yu Guang , Chen Tao
Published: August 2011

In this paper,TiAlN films were deposited on the surface of tool steel substrates using multi-arc ion plating technology at the assistance of hollow cathode（HC）electron beam. The influence of hollow cathode electron beam on the phase composition、microstructure and the performance of TiAlN films were studied.The phase composition，microstructure，surface profile and adhesive strength of the films to the substrate were investigated by X-ray diffraction（XRD）,scanning electron microscopy(SEM),Profilemeter and UNMT-1 Multi-specimen Test System respectively.The results show that with the increase of the current of the hollow cathode, the preferred orientation of（200）was weakened，and the surface of TiAlN films become smooth and the macroparticals decreased obviously.The hollow cathode electron bean can remarkably improve the adhesive property of TiAlN films，and the scratching test show that the critical load from 38N increase to 61N.
Study on Iridium Coating Produced by Double Glow Plasma
Authors: Chen Zhao Feng , Wu Wang Ping , Cong Xiang Na , Wang Liang Bing
Published: August 2011

In this paper, iridium coating was produced by double glow plasma on various substrates. Microstructure, mechanical property, thermal stability and ablation resistance of the iridium coating were investigated. The coating was the columnar grains with a preferred (220) orientation. The adhesive force of the coating on carbon substrate was smaller than that of the coating on the refractory metals and carbide. After heat treatment above 1400oC, many micropores appeared on the surface of the coating. The surface of the coating also presented micropores after ultrahigh temperature ablation. The iridium coating could endure the high temperature up to 2000oC and could protect the substrate from oxidation.
Research and Development for Makeup Object Moderl Agent Layer about XML Standard of Profession Field
Authors: Gu Huan
Published: August 2011

This document explains and demonstrates how to construct JDF data agent tools on .NET Linq platform. This Agent has the ability to create a Job, to add Nodes to an existing Job, and to modify existing Nodes. It is based on the structure of JDF standard and the definition of markup, and packages the node of each layer and its complicated parameters and data type into the object, forming a programming language model that is based on JDF markup object, and reducing the complexity of developing the printing digital process software basing-on JDFXML standard, providing a reference for developing the same distributed digital system basing-on XML driver.
Reinforcement Learning Based Job Shop Scheduling with Machine Choice
Authors: Wang Chao , Zhang Hong Bin , Guo Jing , Chen Ling
Published: August 2011

Job shop scheduling is a key technology in modern manufacturing. Scheduling performance will decide the enterprises’ core competitiveness. In this paper, improved reinforcement learning with cohesion is used in dynamic job shop environment, and it eased the contradiction of precocious and slow convergence. Also the machine choice is considered. So the dual scheduling which included job and machine is achieved in this system. And it obtains better results through the experiments. The utilization of equipments and the emergency handling capacity can be improved in the dynamic environment.
Study on the Screening Efficiency for the Probability Screen
Authors: Tang Qin , Huang Yi Jian
Published: August 2011

Abstract: The evolution of the screening efficiency for the probability screen was given in this paper. Trispectrum based on AR model was estimated with the vibration signal obtained from the probability screen. The relevance between trispectral slices and screening efficiency was analyzed qualitatively. The evolution of screening efficiency was also discussed in detail with a statistical quantity, i.e., kurtosis(K); In addition, the relationship between the correlation dimension and screening efficiency was analyzed quantitatively. The results show that the relevance between the spectral characteristics and screening efficiency is consistent with the relationship between the correlation dimension and screening efficiency.
Realization of DFM in Mold Design & Manufacturing
Authors: Jong Wen Ren , Lai Po Jung
Published: August 2011

The diversified market demand and shorter production cycle, as well as other factors, have increasingly complicate the problems of mold during design and manufacturing. Considering both design and manufacturing to facilitate the production progress, the effective collaborative development becomes an important issue for mold factor. The realization of DFM (Design for Manufacturing) is attached with more importance by the industry. More manufacturing-related data and information are added in the design phase, so that the manufacturing phase may be easier and smoother to enhance the competitive advantage, thus reducing the product development time and improving the production quality. Therefore, this research aimed to develop a web-based mold design for manufacturing architecture with knowledge management, and realize the application of DFM in the field of mold design/manufacturing with CAD redevelopment tool and by navigating design process. This research established a knowledge-based navigating process by utilizing design parameters and features, in order to increase the mold design/manufacturing efficiency to 50%, and avoid unnecessary human errors to ensure the accumulation and inheritance of correct knowledge.
Study on the Design of Layout of an Automobile Factory Based on SLP
Authors: Zhou Kang Qu , Li Xiao , Xie Bo , Yao Chang Xin
Published: August 2011

The method of SLP has been applied for new layout planning example of an automobile company. In this case, the related graphics have been used to illuminate the logistics and non-logistics relationships of every workshop to get the integrating relationships of workshops and preliminary plans. An improvement scheme is proposed after analyzing the two preliminary plans with logistics efficiency, space utilization, management conveniences, the cost, etc. Through this scheme, we can succeed with the reasonable layout.
Practice of CSFs for the Pre-Development Process in New Product Innovation Processes at SMEs: Questionnaire Development
Authors: Abu Noor Hidayah , Md Deros Baba , Abd Wahab Dzuraidah , Ab Rahman Mohd Nizam
Published: August 2011

Today, many organizations have realized an important of pre-development process in order to compete with competitor through drastically introduce new product in the market. In view of that, understanding critical factors that contribute to successful pre-development process implementation is becoming the more important. However, most of past studies were conducted in large organization, very little has been done in small and medium enterprise (SMEs). SMEs have certain limitation in terms of their financial, human, technical, and resources that could hinder their progress towards implementing pre-development process. This paper reviews and analyses CSFs developed by previous authors in order to propose a set of CSFs which were thought to be critical for SMEs. After that the questionnaire developed in this study will be analysis using factors analysis and reliability test in order to examine construct validity and reliability. An initial draft of the questionnaire was developed based on the literature. The questionnaire was pre-tested by academicians and industry practitioners. After that the questionnaire was piloted at 55 food and beverage manufacturing SMEs to check its reliability by using Cronbach’s alpha value. In addition, principle component analysis was carried out to test the construct validity. All the factors in the survey instrument had a Cronbach’s alpha coefficient of more than 0.7 which may be considered satisfactory. Through factor analysis, all KMO values were found above acceptable value of 0.50. All Bartlett’s Test in this analysis was found to be significant. Therefore the instrument is valid and reliable and considered as satisfactory. Nine CSFs, which are believed suitable for SMEs have been proposed in this paper. Through systematic identification and validation, it is hope that the set of CSFs could be used as guides for SMEs to implement pre-development process successfully.
Study on the Decrease of Harmful Substance in Paper-Process Reconstituted Tobacco Sheet
Authors: Wang Liang , Wen Yang Bing , Sun De Ping , Mao Yao , Yao Yuan Jun
Published: August 2011

Effect of wood pulp fiber and filler on the mechanical properties and harmful substance of reconstituted tobacco sheet were investigated. Experiments result showed that added lower lignin content pulp reduced phenols produced by reconstituted tobacco sheet combustion. As addition of bleached hardwood kraft pulp and precipitated calcium carbonate (PCC) increased, the amount of phenols release was dropped dramatically, but in order to ensure the normal operation of papermaking mechine, wood pulp and PCC addition should not be more than 20%. If wood pulp addition was above 20%, it had negative effect on the bulk, carbon monoxide and cigarette smoke flavor of reconstituted tobacco sheet; when PCC addition was more than 20%, it has negative effect on the normal operation of papermaking mechine.
Study of Force Measurement in Honing
Authors: Hou Yun Xia , Wang Qian , Feng Qiang , Ren Cheng Zu
Published: August 2011

Honing is an abrasive machining process that produces a precision surface on a workpiece and widely used in manufacturing engine cylinder walls, compressor bodies, valve bodies, bearings, hydraulic cylinders and so on. Investigation and acquisition of the honing force could be used to investigate the honing mechanism and optimize the processing parameter. But it is difficult to measure the force during the honing process because of the limited honing structure. This paper presents a measuring system for honing force. It introduces the measure theory and the measure system. The whole measuring system is validated by experiment.