bluuebunny/crossref_metadata_2025 huggingface dataset:
The Realization of the Key Technology in Image Capture Based on the Three-Dimensional Grating Surface Measuring Apparatus
Authors: Xie Xue Dong , Cheng Jun Ting , Zhao Wei Ling , Xiao Sheng Bing
Published: October 2010

With the development of the computer vision and information on optics, three-dimensional grating surface measuring apparatus has been increasingly widely used, which is mainly used in industrial inspection, quality control, reverse engineering, virtual reality, cultural reproduction and other areas. It has high precision, fast, non-contact advantages. And the image acquisition system is one of the core and first part of three-dimensional grating surface measuring apparatus, which determines measuring accuracy in the three-dimensional shape. This paper mainly introduces image acquisition system's hardware configuration and software development methods in the apparatus, and finally gives the experimental results.
Topological Synthesis of Planetary Gear Trains
Authors: He Ya Feng , Yu Qing , Wang You Ming
Published: October 2010

Application of topological graphs to analyze and synthesize planetary gear trains (PGTs) is an effective approach in searching for innovative planetary trains. Two topological graphs of basic structure and three fundamental units of PGTs are established as the basis of topological synthesis. Then combination system of PGTs are summarized based on stratify-cation, which can be classified as four basic type including series, parallel, separate and close. Several kinds of compound combination are also discussed. The variation law of topological graphs are analyzed and sorted as diversification including evolution, regression, decay and recovery and inversion transforming graphs to PGTs. Finally graph library based on variation law is presented as a simple and practical way to create a great number of new PGTs.
The Expert System Design of Shearer Spiral Drums
Authors: Ma Xiao Hong , Yu Xin Wei
Published: October 2010

A spiral drum is a important cutting mechanism, and its design quality has important effect on the machine service life, volume of the coal block and breast conditions. By analysis and study of the key technology on the expert system and reference to expert experience and design examples, the expert system of shearer drums is found bottom-up upper based on VB6.0 programming platform and adopted modular design method. It is quickly designed and simulated for the spiral drum structure by using the expert system, which improves design qualities and efficiencies on shearer drum and lays a foundation for the designing high quality shearer.
Experimental Study for the Optical Cutting Tool Path of High Speed Milling Al-Alloy
Authors: Fu Min , Chen Chun Wei
Published: October 2010

In this paper, on the aim of control the fluctuation of cutting force, five kind of commonly used tool paths which were used to milling curved surface were selected to study the optical cutting tool path of high speed milling al-alloy, the results showed that in order to make the fluctuation of cutting force smallest, the tool path which had the more even line spacing along the Machining surface should be chosen according to the characteristic of the Machining surface. In order to minimize the cutting force, the direction with the biggest surface curvature should be chosen, and the direction with the smallest change rate of the surface curvature should be chosen in order to minimize the fluctuations of cutting force.
State-of-the-Art in Micro-Forming of Ultra-High Strain Rate
Authors: Wang Yun , Xu G.F. , Xu Z.Y. , Wang R.M. , Ding S.
Published: October 2010

Most lithography-based micro-forming technology has the limitations in materials selection, forming efficiency and the complexity of micro-parts etc. It is urgent to develop the efficient low-cost micro-forming method in batch. This paper introduced the state-of-the-art of sheet metal micro-forming technology with laser-induced ultra-high strain rate involving the loading modes, processes and forming fundamental. Then, the application of the micro-forming of ultra-high strain rate induced by laser shock is extended into the bulk forming domain, micro bulk forming. It is pointed out that the further investigation on micro bulk forming method focuses on scale effects, forming mechanism, loading and control modes.
Forming Principle and Error Analysis of Ballscrew Manufactured by Cold Rolling
Authors: Wang X.Q. , Cui F.K. , He X.J.
Published: October 2010

According to differential geometry and meshing theory, the cold forming principle of ballscrew is investigated, the meshing model, the contact line and theoretical errors of the ballscrew are constructed, the objective moving laws between roller and workpiece are revealed by analyzing the meshing model and the contact line, the processing method of cold-rolling is considered as the generating method which can lay the foundation for roller design by analyzing forming principle. The error generation causes are discovered and the solutions are given by analyzing the profile error and the error of the actual helix of the centrode of ball.
Gear Fault Diagnosis Based on Wavelet-Support Vector Machines
Authors: Zhao Jie , Li Chun Hua
Published: October 2010

According to the characteristics of gear vibration noise large and fault diagnosis complex, the paper proposes the method of gear fault classification based on wavelet analysis - Support Vector Machines (SVM). This method effectively eliminates the noise interference of the gear signals. The classification model of gear diagnosis applicable to small samples is established and the result of simulation shows that the model can correctly realize gear fault.
Experimental Study on Carbide Tool Wear Characteristics Test for High Speed Finish Milling Aluminum Blades
Authors: Wang Xue Hui , Feng Ming Jun , Gao Zhi Qiang , Dai Ming Jun
Published: October 2010

According to the condition of the high speed milling aluminum (al) blades, the wear characteristics of the carbide tool was observed, whose wear characteristics mainly were flank wear, micro-tipping, exfoliation and so on. With the increase of the cutting time, the tool wear became larger according to the increment of the spindle speed. At the condition of the same feed per tooth, applying high speed finish milling for al alloy blades whose cutting efficiency increased remarkably, surface roughness decreased, high speed machining was adopted in real applications to achieve high economical benefits.
Study of Tribological Properties of MoS2/Cu-Fe Matrix Self-Lubricating Composites Prepared by Induction Sintering at Elevated Temperature
Authors: Fu Chuan Qi , Wang Zhou
Published: October 2010

The molybdenum disulfide(MoS2)/copper(Cu)-ferrum(Fe) matrix self-lubricating composites with various amounts of MoS2 additives were prepared by induction heating sintering method combined with the alloying of the Cu-Fe matrix with various metallic elements. As the temperature was increased from room temperature to 800°C, the mechanical and tribological properties of the composites were measured using the universal testing machine and MRH-3 friction-wear tester. The phase compositions and worn surface morphologies of the composites were analyzed by means of X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Meanwhile, wear mechanisms were discussed. It was found that the mechanical and friction/wear properties of MoS2/Cu-Fe matrix self-lubricating composites were related to the induction frequencies and the contents of the MoS2 as the solid lubricant. The increased MoS2 content resulted in increased mechanical and friction/wear properties at first and then decreased subsequently. The composites with proper MoS2 contents and induction frequencies have the lower the friction coefficients and wear rate at room temperature to 800°C. Meanwhile, the self-lubricating films were mainly made up of some compositions, such as pearlite, cementite, sulphide, solid solution alloy of Mo and Fe, molybdenum oxide in elevated temperature; the wear mechanism of composites has been changed from abrasive wear to ploughing wear.
Empirical Study on Determine the Weight of Industry-University Cooperation Education Quality Evaluation Index
Authors: Du Guo Feng
Published: October 2010

It should be scientific and rational allocation of weights when evaluation index system is designed, and it is as accurately as possible to reveal the imbalance and value differences among the indexes. Based on the three primary indexes, 11 secondary indexes and 51 the third level indexes which make up industry-university cooperation education quality evaluation index system, the methods that were applicable to determine the index weight were compared, such as Delphi technique method, entropy method , fuzzy set analysis method , the analytical hierarchy process (AHP) method, and finally Delphi technique method was chosen to determine industry-university cooperation educational quality evaluation index weight, and it lay the foundation of using other methods to contrastive study.
Memory and Human Nature and our Developments: Hypothesis from Narrow Dimensions and Generalized Dimensions
Authors: Yu K. , Luo J.W.
Published: October 2010

Memory in the nature of primitive features and basic functions, which plays an important role in promoting all the developments from ancient times to nowadays, is the most fundamental form of human nature. This paper will, from both narrow dimensions and generalized dimensions hypothesize and analyze the connection between memory and human nature or our developments; the original feature and function of memory, thereby, will be revealed.
Costume and the Self-Extension: The Functions of Costume in Elmer Gantry from the Perspective of Material Culture
Authors: Luo J.W. , Yu K.
Published: October 2010

As the other creation of material culture, clothes have concrete forms, and reflect the wearer’s taste and appreciation of beauty while provide certain social significance. This paper attempts to analyze the connection between the costume of the hero Elmer Gantry in the novel Elmer Gantry and his self-identity, then to discover how the novelist, Sinclair Lewis ,the first Nobel Prize winner in the USA, by describing the costume of the character, explores the different inner self-identities of one man.
Study on Energy-Saving Mode of High-Quality Anti-Corrosion Micro Arc Oxidation Coatings on Magnesium
Authors: Xi J.J. , Wu Pei Nian , Zhao Jun , Wang Wei
Published: October 2010

In this paper, micro-arc oxidation process on magnesium alloy anode in three models alkaline solutions are considered under conditions of low power. The excellent morphology of ceramic coating is dense smooth film-like structure of the whole. The phase composition of ceramic coating film is MgO, Al2O3, and a kind of phase composition of the main salt. In the constant current mode in a high frequency of small duty cycle of research methods, the corrosion performance (salt spray test) is successfully developed that achieve 800~ 1000 hours of high quality film, under electric current density less than 1A/dm2.
Trial on C3N4 Coating Cutter Hard-Dry Cutting on Hardened Steel
Authors: Yang Hai Dong , Xia Xi Quan , Qing Zhen Hua
Published: October 2010

The method of “cutting instead of grinding” on hardened steel is always attractive to engineers. To gain this aim the tool material must first be found. C3N4 is a new kind of super hard material and has comparable properties with diamond in high hardness, wear-resistance, low friction coefficient and thermal conductivity. A number of dry-cutting tests were carried out by C3N4-film coated tool on hardened steel, proved the coating tool is suitable for hard dry cutting.
Effects of Spindle Speed on Surface Qualities in WPC Sawing
Authors: Guo Xiao Lei , Liu Hui Nan , Gao Wei , Cao Ping Xiang , Guo Yong
Published: October 2010

Wood plastic composites (WPCs) are the industrial products. It is made out of wood waste fibre and waste plastic glued together by heat and pressure. Nowadays WPCs products are preferred over solid wood in many applications due to certain comparative advantages. Sawing is the machining operation frequently used in manufacturing parts of WPCs. The aim of this article is to study the effect of cutting speed on surface roughness in different WPCs sawing. A plan of WPCs sawing experiments was preformed with prefixed cutting parameters. The objective was to establish correlation between rice hull flour/PE composite, rice hull flour/PP, rice hull flour/PVC and cutting speed with the surface roughness after sawing. The results show that the spindle speed had significant effects on the surface qualities of rice hull flour/PE composites, rice hull flour/PVC composites and rice hull flour/PP composites. The advantage of using a high cutting speed in WPCs sawing is evident. With appropriate cutting parameters, one can obtain surfaces with Ra＜6μm and to get surfaces qualities (dimensional precision) in workpiece of different WPCs.
Preparation of Compact Micro-Arc Oxidation Coatings on Aluminum Alloys
Authors: Wu Pei Nian , Xi J.J. , Zhao Jun , Wang T.J.
Published: October 2010

In this paper, a hard and thin coating with no loose layer was formed on the surface of the aluminum LC4 by bipolar micro-arc oxidation power, and the influence of ratio J of the negative current density to the positive current density on the thickness h and the hardness H of micro-arc oxidation coatings was studied. By SEM and other modern materials testing and analyzing techniques, the microstructures of the micro-arc oxidation ceramic coatings were tested and analyzed. It was showed that the micro-structure is compact, and the ceramic coating almost has non-porous layer.
Numerical Simulation of Stamping Forming of Automobile Cover
Authors: Fang Hui Min , Zhang Guang Sheng
Published: October 2010

The main defect of the inner-hood is break, which was obtained by the numerical simulation of it’s forming process. The main impacted parameters of sheet metal forming process are corner radius of die, friction coefficient, clearance between punch and die and the height of drawbead. The maximum impact of the break of forming factors was drawbead high, followed by the die gap, die edge and the friction coefficient which were obtained by the four factors orthogonal optimized simulation. The comparison between the results of numerical simulation and actual operation proved the accuracy of the numerical simulation.
Springback Analysis of Stamping Forming of Auto Beam
Authors: Zhang Guang Sheng , Fang Hui Min
Published: October 2010

The main factors of stamping forming of auto beam are the thickness of sheet metal, friction coefficient, the die gap and the bind holder force. The stamping forming of auto beam was simulated by DYNAFORM software according to orthogonal experiment with four factors and three-level, and the simulation results were analyzed by the method of the variance analysis. The results show that the main factor causing springback is the thickness of sheet metal, followed by the friction coefficient and die gap, the minimal factor is the bind holder force.
Parameterized Finite Element Analysis System of Turbine Rotor Thermal Deformation Based on the Secondary Development of ANSYS
Authors: Wang Na Jun , Jin Xiang Wang , Wang Jie , Diao Hai Long
Published: October 2010

This paper establishes the workflow of ANSYS parameterized finite element analysis, based on this, the parameterized finite analysis system of turbine rotor thermal deformation is established. In this analysis system, to complete the analysis process, staff only needs to click on the buttons on the interface and input parameters. The results show that this method can avoid repetitive operations, improve the efficiency and this simple system is easily applied in the factory.
Study on Information Technology Adoption in Rural Areas Based on Network Externality
Authors: Cen Lei , Zhang Feng Ling
Published: October 2010

This paper analyzes the current status of rural information in Chinese, and analyzes the influencing factors on the effect of information technology applied in the rural areas from a technology adoption point of view. Then using the integration theory of technology adoption model and network externality theory, it increases the factors of network externality and cost to construct a model of user behavior model of information technology in rural areas. Finally, it proves the validity of model factors by empirical research to provide theory for the further development of information technology in rural areas.
The Design of Surface Geometric Microtexture Based on Function
Authors: Li Bo Kui , Liu Yuan Wei , Zuo Dun Wen , Li Nian Nian
Published: October 2010

A new concept of surface geometric microtexture design is put forward in this article. The conditions of surface geometric microtexture are closely associated with the working surface’s capabilities of machine parts. Therefore, the distinction of surface topography will make a great difference to functional characteristics. However, the link between surface topography and functional characteristics has been neglected for long. With the development of manufacturing technology, special surface geometric microtexture can be designed and processed to achieve some specific goals. Surface geometric mecrotexture design based on function has been one of the important design criterions in some fields along with principle design and structure design, on account of its engineering special pertinence plus its significance in engineering and theoretical study.
Design and Kinematic Analysis of Two Novel 1-Translation and 2-Rotation Parallel Mechanism
Authors: Huang Xiu Qin , Shen Hui Ping , Xin Xiu Mei
Published: October 2010

The two novel 1-translation and 2-rotation parallel mechanisms are investigated. An analytic solutions corresponding to the forward and inverse position are obtained. The influences by the three input variables on the three output variables are analyzed carefully and the valid working ranges of input and output variables are given. The pros and cons are addressed by comparing with the two parallel mechanisms, and the optimal one of the two mechanisms is produced.The work of the paper provided a solid foundation for mechanical structural design and real-time controlling of the novel parallel mechanism.
Study on Processing and Model Building of Composite Structure Forming for 3-D Regenerative Bone Scaffold
Authors: Liu Da Li , Liu Yuan Yuan , Hu Qing Xi , You Fei , Zhang Hai Guang
Published: October 2010

Based on the analyzing for strengths and weaknesses of the rapid prototyping (RP) and electrospinning technique in the manufacturing of three-dimensional bone scaffold, the defects including RP’s low precision and electrospinning’ low intensity has been found. Accordingly, composite structure forming (CSF) has been proposed. This approach integrates the advantage of rapid prototyping and electrospinning. Furthermore, the modeling method of Scaffold for composition forming has been proposed .At the end, the method of controlling process has been given.
Monitor On-Line and Fault Diagnosis to High Speed Centrifugal Hydrogen Compressors Based on the Theories of EMD and Correlation Dimension
Authors: Liu H.I. , Li X.P. , Rui Y.N.
Published: October 2010

High Speed Centrifugal Hydrogen Compressors are big and critical equipments which are widely used in chemical enterprises. It is very important to monitor their condition on-line and diagnose their failure. Based on the research of EMD (empirical mode decomposition) and correlation dimension and experimental simulation, the vibration signals of a High Speed Centrifugal Hydrogen Compressor’s main spindle are collected when working. Then the signals are decomposed by EMD, their correlation dimensions are calculated and taken as fault feature. Finally, using BP algorithm of a neural network in which there are 3 lays, a satisfied effect of fault diagnosis of a High Speed Centrifugal Hydrogen Compressor has been got. The experiment has confirmed that the method is advanced, reliable and practical. A new method is provided for High Speed Centrifugal Hydrogen Compressors’ fault diagnosis.
Theoretical and Experimental Research on Tapping Forces of Nickel-Based Superalloy GH4169
Authors: Tang Y.L. , Han Rong Di , Geng Lin
Published: October 2010

The mechanical model of the tapping torque and the friction one were established based on Theoretical Research of Tapping Forces. A series of standard taps with a cutting cone angle of 7°30′ were prepared from high-speed steel W9 and used to tap Nickel-based superalloy GH4169.It was found that the friction torque was about 45% of the total torque as tapping with the standard taps. Friction torque is the main reason in tapping difficult –to-cut materials.
Research on Mechanical Structure Optimization Oriented to Dynamic Characteristics
Authors: Hu Miao , Wang Tai Yong , Yang Shuai , Qiao Zhi Feng , Li Dian Peng
Published: October 2010

Basic principles of dynamic design were proposed for the characteristics of machine dynamic performance. Take some curved-tooth bevel gear generator as research object. Its dynamic performance was analyzed and structure was optimized through theoretical analysis, finite element method (FEM) simulation and dynamic test analysis. Results show that these principles are suitable for dynamic performance optimization and design of machine tool.
Fault Diagnosis of Hydraulic Pump Based on Multi-Sensor Data Fusion
Authors: Liu Ying , Zuo Dun Wen , Wang Yao Hua , Han Jun , Yang Xiao Qiang
Published: October 2010

Due to hydraulic pump’s multiple fault parameters, imprecision of fault diagnosis and bad fuzzy properties, a novel method of data preprocess to remove the noise disturbance and extract the characteristics of parameters, in which the order analysis is applied, is put forward. Then the hydraulic pump’s fault is diagnosed with decision-level data fusion of multiple sensors. The practical results showed that the fault diagnosis method based on D-S proof theory and decision-level data fusion could promote the accuracy and efficiency of hydraulic pump’s fault diagnosis.
Study on Universal Testing Platform of Engineering Machinery
Authors: Yang Xiao Qiang , Gao Ya Ming , Liu Ying , Han Jun
Published: October 2010

Due to the multiple types and complexity of fault diagnosis, the general-purpose testing platform of engineering machinery’s hydraulic system is developed for the maintenance of military equipment. The general function and structure of the testing platform is presented. The hardware system consists of modular circuit, integrates control computer of embedded controller with PXI-interfaced modular instrument, program-controlled device, connector and adapter hardware. And the software program comprises data management module, fault diagnosis module coupled to the data acquisition module, signal processing module, experiment condition control module, database access module, system configuration and self-test as well as help module. Further, the hardware characteristics are showed and the principle of hydraulic testing platform is presented. The universal testing platform offers enormous benefits for fault diagnosis and condition monitoring of military equipment and machinery.
Chip Formation of Highly Efficient Cutting Titanium Alloy Membrane Disk
Authors: Yang Shu Cai , Zheng Min Li , Fan Yi Hang
Published: October 2010

Titanium alloy membrane disk is a typical part in aerial engine and it belongs to variable cross-section thin-wall part, which is apt to change its nature and difficult to machine. Serrated chip is prone to create in the machining process. A periodic serrated chip will cause high frequency undulation of the cutting force, and further leads to the cutting tool wear and affect the surface’s integrity. Based on the turning of titanium membrane disk, this paper used metallographic microscope and SEM to observe the morphology and micro shape of the chip, and analyzed the influence of cutting conditions on chip formation and the reason for serrated chip. Finally, a FEM analysis on the chip formation process is completed. Analysis results show that under all the set cutting conditions the serrated chip was formed in the machining process. The shearing slippage and fracture caused by dislocation movement can better explain the formation mechanism of serrated chip. The feed rate has great effect on the chip formation and the forming frequency of serrated chip. The FEM analysis results primly consistent with the experiment results, which can accurately forecast the cutting force, the distribution of temperature and the surface quality.
Experimental Measurement of Quantum Entanglement and Quantum Information Remote Control
Authors: Wang Z.G.
Published: October 2010

Quantum entanglement is one of the distinctive features of quantum mechanics, which is an effective approach to realize quantum communication. This article introduces the fundamental principles of quantum entanglement and proposes an implementation plan for remote preparation and measurement of quantum information.
Study of High Efficiency in Green Cutting Nickel-Based Superalloy GH4169
Authors: Han Rong Di , Wang Hui , Zhang Y. , Yao Q.W.
Published: October 2010

The machinability of nickel-based superalloy GH4169 is very poor, the traditional machining of GH4169 using the cutting fluids with the active additives causes environmental and health problems, which is out of the request of the sustainable development strategy. In this paper a new green cutting technology with overheated water vapor as coolants and lubricants was proposed to achieve the aim of green cutting and high productivity. Cutting experiments and tool wear tests using carbide tool YG6 under dry cutting, emulsion and water vapor were performed. The cutting force, cutting temperature, machined surface quality and tool life were investigated; the curve of flank tool wear and relation between tool life and cutting velocity was carried out. The results of experiments indicated that during water vapor condition, the cutting force and cutting temperature was reduced, the machined surface roughness was improved, and the tool life was longed, respectively, and the higher velocity was taken during the some tool wear condition compared to dry cutting. The research results show that green cutting was achieved associated with overheated water vapor cooling and lubricating, at he same time the machined surface quality and production efficiency was increased.
Study on Product Customization Design Knowledge Framework Based on Ontology
Authors: Gao Zhu , Ji Xiao Min , Guo Hun
Published: October 2010

In this paper, we concentrate on the ontology-Based design knowledge modeling technologies for the product form. For that, we study the ontology modeling theory, the representation of product design knowledge. From the view of the DKM, the product form prototype and its mathematical model will be established for Product Forms Innovative Design System (FIDS).
On the Optimization of Internal Control System from the Perspective of Corporation Governance
Authors: Zhang Shu Hua
Published: October 2010

With the rapid growth of economic globalization and the increasing change rate of economic environment, corporations suffer from more and more violent competitive pressures and challenges. Thus favorable corporation governance and internal control become the crucial factors for the corporations to survive and develop. There is a great correlation between corporation governance and internal control, which complements and promotes mutually. The correlation, as the core of modern corporate system, attracts people’s attention increasingly and becomes the focus to study and explore. The management of a company involves shareholders, operators, creditors, staff, and consumers and so on. The management aims at optimizing the arrangement of the internal control system, also known as the structure of the utmost important internal control system, which balances the rights, responsibilities and interests of the involved parties on the premise of efficiency and equality. By this structure, the goals of the company and the measures of achieving the goals thus can be made. The reform of the system of the companies in China attaches more and more attention to the management of a company especially in the managerial practice of the listed companies. A series of the rules of management and control have been made, which shows that the reform of the companies has come to the new phase of managerial specialization.
Investigation of Fiber Diameter in Spunbonding Process via Mathematical Modeling
Authors: Zhao Bo
Published: October 2010

The polymer air-drawing model of polypropylene (PP) spunbonding nonwovens has been established. The influence of the density and the specific heat capacity of polymer melt at constant pressure changing with polymer temperature on the fiber diameter have been studied. The effects of the processing parameters on the final filament fiber diameter have also been investigated. A lower polymer throughput rate, a higher polymer melt temperature, a higher primary air temperature, a higher primary cool air velocity, and a higher air suction speed can all produce finer fibers, while fiber diameters first decrease with increases in the venturi gap and then increase with increases in the venturi gap.
Research on Characteristics and Models of China’s Cooperative Education
Authors: Liu C.M. , Wang Zu Lin , Chen Ji Li
Published: October 2010

This paper utilizes the method of synthetic analysis to summarize the characteristics and models of China’s cooperative education, which shows the distinctive research and practice of China’s Co-op according to 113 thesis and 27 reports presented on Summit of China’s Cooperative Education in 2009. Co-op (short for "cooperative education") in graduate education is particular, diversified in undergraduate education and perfect in vocational college. The reform and development of CIAR (short for cooperation of industry-academy-research) becomes much more prosperous. Finally we make the following conclusion: Co-op in China will develop from “three cooperation” to “four cooperation”, which is the cooperation in education, school-running, employment and mutual development.
The Distribution of Rare Earth Element on A356 and its Influence on Α-Solidification
Authors: Zheng Zhi Qiang , Xiong Xin Gen , Chen Ke Ming , Zheng Zhi Rong
Published: October 2010

The distribution of Rare Earth element on the cast of A356 and the effect of the first α phase by the Rare Earth element asymmetric distribution has been discussed in the paper. It is showed by the research, that the condition of interphase is changed by Rare Earth element asymmetry distribution, which influences the process ofαphase growing and facilitates the growth of α phase in sphere, and leads to a optimal Rare Earth quantity for facilitative effect, which is 0.5% in this experimentation, and that αphase grain will be change to small by adding Rare Earth.
Dynamic Response Characteristic Analysis of the Wind Turbine Tubular Tower Based on ANSYS Workbench
Authors: Liu Zhao Hui , Wang Xiao Jun
Published: October 2010

Finite element analysis and the ANSYS Workbench software is used to analyze the dynamic response characteristic of wind turbine tubular tower and solve out the natural vibration frequencies. That result is used to verify the design parameters and optimize the tubular tower.
Study on the Design of Co-Operative Education Quality Evaluation Indicators
Authors: Du Guo Feng , Zhao Yan , Ma Chao , Yu Si Ping
Published: October 2010

In order to enrich the basic theory of co-operative education, in this paper, the author puts forward the basic concepts of co-operative education quality evaluation. On the basis of a large number of investigation and experts’ advice, reference to the influencing factors of co-operative education quality, fully considering the influence on the co-operative education quality as the school, the society and the students, three indicators in level one, 11 indicators in level two and 51 indicators in level three are constructed, which form the basic content of co-operative education quality evaluation indicator system. This research will further promote the development of co-operative education theory, and it is benefit to develop co-operation education better between universities and companies.
Reciprocating Pump Bearing Fault Diagnosis System of Virtual Instrument Based on Probabilistic Neural Network
Authors: Pei Jun Feng , Shan Chun Jing
Published: October 2010

A system for reciprocating pump bearing fault diagnosis is developed based on virtual instrument development platform, PNN and fault diagnosis theory. Vibration signals from power end bearing of reciprocating pump are acquired, analyzed and diagnosis. Experiment result shows that this system is reliable operation and accurate diagnosis.
Porous Pipe Dispersion Aquaculture Aerator Research Based on Two-Phase Flow Characteristics
Authors: Chen Qi Dong , Chen Qing Zhang
Published: October 2010

Aspects including the form of the porous pipe bubble, the working principle of the atomization burner, dissolved oxygen affected by degree of dryness for the gas-liquid two-phase flow of the gas pipe line and the parameterized relationship between water body and the system of dispersion aerator are analyzed from theory to test in this article. The control conditions for the maximum diameter of the micro-pore in the porous pipe and the largest pressure of the gas-liquid two-phase flow in this atomizer are got hold of. The design parameters of the porous pipe dispersion aquaculture aerator are found and bear out better by testing.
Research on Characteristics and Models of China’s Cooperative Education
Authors: Liu C.M. , Wang Zu Lin , Chen Ji Li
Published: October 2010

This paper utilizes the method of synthetic analysis to summarize the characteristics and models of China’s cooperative education, which shows the distinctive research and practice of China’s Co-op according to 113 thesis and 27 reports presented on Summit of China’s Cooperative Education in 2009. Co-op (short for "cooperative education") in graduate education is particular, diversified in undergraduate education and perfect in vocational college. The reform and development of CIAR (short for cooperation of industry-academy-research) becomes much more prosperous. Finally we make the following conclusion: Co-op in China will develop from "three cooperation" to "four cooperation", which is the cooperation in education, school-running, employment and mutual development.
Study on Prediction Model and Experiments of High-Speed Milling Force for Stainless Steel 316
Authors: Zheng Wei Feng , Wu Jing Quan , Liu Can , Li Guang Hui , Tan Guang Yu
Published: October 2010

Through the orthogonal test in which stainless steel 316 was milled with high speed by solid cemented carbide end cutter, the milling force was measured. By multiple linear regression method, the prediction formula of the milling forces of stainless steel 316 was found. In addition, this study validates to significant degree of the formula meeting the actual condition, which can provide a reference to better selection of cutting parameter in advance and the design of high-speed milling cutter.
Research and Development on the Open PMAC-Based CNC System Software
Authors: Pan Ming
Published: October 2010

Based on PMAC open CNC system, which features an open secondary development of space left to the designer. This topic has developed a set of application and secondary development of the NC system experimental platform, that is, IPC (industrial computer) machine + PMAC structure of open CNC system. This issue focuses on the overall structure of the numerical control system software design and the function module design and development process.
Influence of Laser Surface Melting on Wear Resistance of AZ91D Magnesium Alloy
Authors: Chen Ju Fang , Li Xing Cheng , Li Ren Xing , Shen Lai Di
Published: October 2010

In the present study, an attempt has been made to improve the surface hardness and wear resistance of magnesium alloy AZ91D by laser surface melting (LSM) with a 2kW continuous wave CO2 laser. The microstructure of the laser surface melted zone consists of fine dendrites with an average grain size of less than 10μm. Micro hardness of the melted zone was improved to 70-85HV as compared to 53HV of the substrate. The wear behavior of the laser surface melted layer was investigated using a ball-on-flat apparatus under dry sliding condition. Compared with the as-received AZ91D, the wear volume of the laser surface melted layer was decreased by 51%, the wear resistance of the laser surface melted layer was improved significantly.
The Friction and Wear Properties of VC Coating by TD Process
Authors: Zhou Chao Zheng , Kong De Jun , Yan Yu Feng
Published: October 2010

VC coating was prepared on the surface of Cr12MoV cold working die steel by TD process, and its friction and wear properties were researched with HSR-2M type high-speed reciprocating friction and wear tester, the effects of load on friction and wear properties were discussed, and the wear surface morphologies were observed with SEM. The experimental results shown that fatigue wear and adhesive wear are mainly wear mechanism of VC coating, and the different parts have an influence on wear mechanism; When cracks occurs, the crack growth is the combined result of mutual influence of elastic-plastic crack growth and fatigue crack growth; There is no relationship between friction coefficient and load, and the wear rate increases with the load.
Nonlinear Speed Control of a Series DC Motor
Authors: Tang Bing Xing , Wang Zhang Jun
Published: October 2010

The nonlinear speed control problem of a series dc motor was considered. Based on the nonlinear model built by a hybrid method, in which the local stability was proved by the Lyapunov’s first method to ensure the meaningfulness of the identification of the steady-state-about plant parameters, a sliding-mode control law, with a load torque Luenberger observer and an angular acceleration estimator, was derived theoretically, which effectiveness demonstrated by simulations and experiments. In order to reduce the steady-state error caused by the discrete implementation, a modified sliding-mode control with an auxiliary PI controller was proposed. The experiments show that the modified sliding-mode control law is superior to the PID regulator and the ordinary sliding-mode control law.
The Failure Diagnosis of the Step-Up Gearbox in the Finishing Mill and the Formation of its Intelligent System
Authors: Chen Shan Shan , Yang Peng Peng
Published: October 2010

By a text and a diagnostic analysis on the abnormal conditions of a increasing in operation, we made fairly accurate judgment of the failure in the equipment. The result has been found to be basically same with the actual situation. Meanwhile On the basis of the data measured many times, we also worked out the vibration diagnosis standards and the intelligent system for spotting common failure, which are not only appropriate for the equipment currently, but can be upgraded constantly. Both the conveniences have benefited the maintenance staff by their monitoring and checking the vibration state on the equipment and raised the working efficiency by their accurate assurance on the operating conditions
Study on Dynamical-Filtering Roller-Type Oil Screen Pipe Based on Ordinary Gear Train
Authors: Xin Shao Jie , Zhong Ii
Published: October 2010

In this paper, a new structure of dynamical-filtering roller-type screen pipe based on ordinary gear train is put forward. In light of the working conditions of the oil pump, the operating principle of this kind of screen pipe is presented. Three-dimensional model and computational fluid dynamical (CFD) model for flow filed analysis are established. Then, pressure exerted on the blades of the impeller wheel in the screen pipe is calculated in FLUENT, which yields the torque on the impeller shaft and explains the mechanism of dynamical filtering. Transmission device is finally designed on the basis of the maximal torque on the impeller shaft.
The Influence of Surface Tension on Lubrication Characteristics
Authors: Liu Jian Ping , Zhang Xin Yi
Published: October 2010

The mathematical model was developed to account for viscosity induced by surface tension in the light of EDL theory. The effect of the EDL on the lubrication performance of lubricant for a composite sliding block-disc pair was investigated in considering surface tension. The experimental results showed the EDL has apparent effect on the friction coefficient, The lower of the entrainment velocity, the greater of the friction coefficient. With the increase of entrainment velocity, the increase rate of friction coefficient decreases. Thus, the established model could be used to well explain the effect of the surface tension of the EDL on the lubricating performance of a liquid.
Design on Disc Cam Mechanism of Roller Follower
Authors: Hu A.P. , Kong D.J. , Zhu W.
Published: October 2010

The requirements on the movement law of the follower imposed by disc cam mechanism of roller follower are considered, and the influencing factors of the relative motion between the roller and the cam contour are investigated. The requirements on the roller radius for the rolling motion of the roller that is relative to the cam contour are analyzed. It can be found that the constant speed movement, one of the common follower motion laws, cannot be applied alone to roller follower disc cam mechanism; otherwise movement distortion for the follower will happen. The movement distortion caused by inappropriate choice of the movement law can not be avoided by increasing cam base circle radius or by decreasing roller radius. There is a required minimum roller radius for the relative movement between the roller and the cam contour to be rolling movement. The minimum radius is inversely proportional to the rolling friction coefficient between the roller and the cam contour, proportional to the radius of the friction circle of the revolute pair between the roller and the follower lever, and independent of the load of the cam mechanism, pressure angle and other dimension parameters.
The Arc-Length Method from Controlling Load to Controlling Electric Potential
Authors: Yang Xiao Bin
Published: October 2010

This paper generalizes the arc-length method, and proposes a new scheme of controlling equilibrium path including static equilibrium and electrostatic equilibrium. To take example for the thin plate electrode posing on the electrostatic field force, whose governing equations are the two fold nonlinear coupling equation, the method to compute the incremental factor is give in detain. The result is to show that not only the approximate critical voltage is obtained but also the trace after losing stability is found stably.
Fan Rotating Stall Fault Diagnosis and Treatment
Authors: Hu Jun
Published: October 2010

Introduce the fault mechanism and vibration character on Rotating Stall. Give Precise Diagnosis on an Exhaust Gas Centrifugal Fan of a Stell Mill and find that the fundamental cause is the Pipeline illogical design.
Degree of Freedom of Twin Tripod Universal Joints
Authors: Chang De Gong , Zuo Bin
Published: October 2010

The structure and characteristic of the twin tripod sliding universal joint were studied in this paper. The degree of freedom was calculated theoretically and then the structure of this joint was improved to obtain single degree of freedom. At the same time, the degree of freedom of improved mechanisms was checked by using the CAD software Pro/E. This work offers the base for further research and development of this universal joint.
Kinematics Simulation of Twin Tripod Sliding Universal Joints
Authors: Chang De Gong , Zuo Bin , Liu Zhao Dong
Published: October 2010

This work compares two kinds of kinematics simulation of the twin tripod sliding universal joint. On the basis of the structural characteristics of the twin tripod sliding universal joint, the multi-body dynamic model was established by using the CAD software Pro/E. Track of the tripod center and a lot of analysis results are obtained, It offers the base for further research of the universal joint.
Used–Car Dismantling and Recycling of Key Technologies
Authors: Liu Y. , Chen Z.W.
Published: October 2010

The scrap car recycling has drawn increasing attention, has become a global problem. Disposal of old vehicles fundamental measure is to establish a sound, professional recovery system. In this paper, my life vehicle dismantling and recycling of the status and features, combined with developed countries, automobile dismantling and recycling of waste professional characteristics, vehicles dismantling and scrap the key technologies of the inquiry.
Study and Application on Automatic Welding of Bellows Based on Laser Measurement
Authors: Zhao Wen Hui , Duan Zhen Yun , Liu She
Published: October 2010

Metal bellows are widely used as its many advantages. However, in the process of welding, the welding quality and welding speed is affected by the operators' ability very much. For this, This automatic welding system based upon on-machine laser measurement is developed for the bellows in the large transformer cooling system. This system is composed of a laser profilometer, the motion control system and the mechanical parts, etc. On-machine measurement is conducted on the axial cross sections of the bellows using the laser profilometer, and the accurate coordinates of the welds in radial and axial directions are obtained by calculating after denosing, smoothing and interpolation on the points of the measured profiles. After that coordinates' data was delivered to the motion control card. Automatic welding was achieved by its control of welding torch moving along with the 2D platform that ensures the precise relative position of the welding torch and the welds. Experiments show that this system increases the quality and efficiency effectively and decreases the working intensity of the workers.
Motion Simulation of Twin Tripod Sliding Universal Joints
Authors: Chang De Gong , Liu Zhao Dong , Zuo Bin
Published: October 2010

The motion simulation of the twin tripod sliding universal joint was conducted by using the three-dimensional CAD software SolidWorks and the simulation results agree well with the theoretical studies. At the same time the visualization database offers the base for further research and development of this sort of joint.
A Proof Research on Regional Integration of Industry Based on the SWOT Analysis
Authors: Li Tan , Zhang Chun Yan
Published: October 2010

Based on the industrial situation and the requirement for regionally integrated development, this article focuses on the SWOT analysis of the industrial integration in SXC. Listed in this article are the strengths and weaknesses in the internal conditions of Suzhou-Wuxi-Changzhou industrial integration as well as the opportunities offered by and threats coming from the external environment. The conclusion is that the direction for the further development for Suzhou-Wuxi-Changzhou industrial integration is to cultivate a stratified development model in the manufacturing industries of this area.
The Influence of Processing Parameters on Gas Penetration in GAIM for Thick-Wall Parts
Authors: Shen Hong Lei , Feng Liu
Published: October 2010

In this paper, the auto door-handle was taken for an example, the quantitative analysis of the processing parameters (including melt temperature, shot size, delay time and gas pressure) on gas penetration in GAIM process was introduced using the method of orthogonality and computer-aided engineering. The effort in this article is aimed at the effect extent and trend of the four parameters on the molding result. Through the study, the main achievements are as follows: In short shot process for thick-wall parts, the shot size is the most significant factor on the molding result, the delay time is the second and the gas pressure is the last one. The length of gas penetration will increase with the reduction of shot size and delay time, or with the increasing of melt temperature and gas pressure. Then the optimization of the process parameters on the door handle was carried out.