bluuebunny/crossref_metadata_2025 huggingface dataset:
Preparation of Tourmaline Composite Materials and its Property of Far Infrared Radiance
Authors: Xue Gang , Wang Yan Qing , Zhang Lei , Zhang Xue Fang
Published: January 2010

The far infrared radiance tourmaline composite materials have been successfully prepared. From the XRD results, the composite materials were composed of tourmaline and transition metal oxides（Fe2O3, MnO2, Co2O3）and cerium oxide. Under SEM, the spherical particles of transition metal oxides were adsorbed by the flake particles of tourmaline. The composite materials show relatively high far infrared radiance than tourmaline and the mineral composite materials with smaller unit cell volume exhibits higher infrared radiance
Preparation of Zn2+/Stilbite Composite Particles Material and its Antibacterial Property
Authors: Ding Hao , Xu Xia , Liang Ning
Published: January 2010

Zn2+/stilbite composite particles material was prepared by stilbite carrying Zn2+ and solidifying Zn2+ stably using natural stilbite as carrier. The physical properties such as particle size and whiteness, the functional properties such as antibacterial property, durability and the behavior of eliminating harmful gases, and the microstructure of Zn2+/stilbite composite particles material were investigated. The average particle size of Zn2+/stilbite composite particles material is 0.8mm, and its whiteness is 88, and the whiteness of the paint adding it isn’t influenced. Zn2+/stilbite composite particles material has excellent antibacterial property and durability. The restricting ratio against Escherichia coli and staphylococcus are both 100% when the concentration of Zn2+/stilbite composite particles material is 700mg/mL, and the restricting ratios are still 99% and 98.5% after it dipped into hot water for 12 hours, respectively. Zinc ions distribute homogeneously in part holes of stilbite and there are still many free holes in stilbite, which makes Zn2+/stilbite composite particles material have the function of eliminating harmful gases as well.
Production of Levulinic Acid from Cellulose Catalyzed by Environmental-Friendly Catalyst
Authors: Wang Pan , Zhan Si Hui , Yu Hong Bing
Published: January 2010

Using solid acid catalyst for the levulinic acid (LA) production from cellulose is one of the promising methods for utilization of biomass. An environmentally friendly solid acid catalyst, sulfated TiO2 was prepared by precipitation-impregnation method and used to catalyze the production of levulinic acid from cellulose. The concentration of sulphuric acid had a remarkable influence on the construction and catalytic activity of sulfated TiO2. The influence of reaction temperature and catalyst dosage on levulinic acid yield was also investigated with the aim to obtain the highest yield of LA. The optimum condition for the highest yield of levulinic acid (27.2%) was achieved at 240 °C, 0.7g of sulfated TiO2 and reaction time of 15 min. The recycling test indicated that the catalytic activity of the catalyst had a slight decrease after being used two times.
Research on Superfine Wool Surface Texture Modified in Biochemistry
Authors: Ma Yin , Li Qing Shan , Di You Bo , Zhang Min
Published: January 2010

Superfine wool surface texture changed after the processing with biochemistry technology. Its fiber thinness and friction effect reduce, the itchy feeling caused by wool is rid of, and the contraction of carpets diminishes so that it lives up to the standard of machine washing and anti-pilling. Meanwhile, the chemical groups of fiber surface of the superfine wool changes as well, which produces a material of which the physical and chemical structure of the surface differs from the nano-interface of the original fiber. If supplemented by functional stuff and combined in the form of chemical bonds, it would equally distribute and functions everlasting, thus achieving a comprehensive effect of the superfine wool-smoothness glutinosity, brightness, as well as anti-virus. Boiled under high temperature, it is still capable of retaining all the styles prior to the dyeing with no apparent reduction of the feel.
Selective Permeability Mechanism of M Type K Channels
Authors: Liu Yu Zhi , An Hai Long , Li Jun Wei , Zhang Su Hua , Zhan Yong , Zhang Hai Lin
Published: January 2010

M-current plays an important role in the regulation of neuronal excitability and stabilizing the membrane potential. KCNQ2 and KCNQ3 potassium ion channels are proposed to underlie the neuronal M-current. In this paper, we studied the permeable properties and the selective properties of the KCNQ2/3 potassium channel with molecular biology and electrophysiology methods, respectively. Then, based on the first principle and the structure of the KCNQ2/3 potassium ion channel, the potential curve is calculated by the density functional theory. And forced by the potential, the dynamical properties of KCNQ2/3 channels are also studied. Our results, not only from electrophysiology study but also stochastic dynamics simulations, indicate that heteromeric KCNQ2/3 channels all showed a permeation sequence of K+ >Rb+>>Na+. The aim of this research is looking for a possible physical basis for the permeation of ion channel and opens an avenue for further research.
Complete Benzene Oxidation over Colloidal Gold Catalysts Supported on Nanostructure Zinc Oxide
Authors: Wu Hong Jing , Shuai Qin , Zhu Zhen Li , Hu Sheng Hong
Published: January 2010

The catalytic activities of various nanometer metal oxides (ZnO, CeO2, ZrO2, Al2O3, Co3O4, MgO) supported colloidal gold catalysts with self-designed equipment were evaluated and compared for benzene catalytic oxidation. The results showed that ZnO was the most activive support of the colloidal gold among these nanometer metal oxides. The effects of Au/ZnO on the activity for benzene oxidation were investigated at 50- 300°C. The optimal gold loading was 2 wt%. The Au/ZnO was characterized using BET, XRD, and TEM methods. The XRD patterns and TEM image showed that gold nanoparticles were well dispersed on the surface of ZnO, and the mean diameter was 3.1±0.81 nm. The gaseous products of benzene oxidation and the adsorbed species on Au/ZnO catalyst surface were characterized with FTIR and GC-MS. It was proved that benzene was completely oxidized into CO2 and H2O over the Au/ZnO catalyst at low temperature.
Synthesis and Swelling Behaviors of Poly (sodium acrylate)/Hydroxyapatite Superabsorbent Nanocomposites
Authors: Wang Jin Lei , Zheng Yi An , Wang Ai Qin
Published: January 2010

Superabsorbent nanocomposites based on partially neutralized acrylic acid (AA) and hydroxyapatite (HP) were prepared by free radical solution polymerization using N, N′-methylenebisacrylamide (MBA) as the crosslinker and ammonium persulfate (APS) as the initiator. The developed nanocomposites were characterized by Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The effects of HP content on water absorbency of the nanocomposites were investigated, and the swelling behaviors of the nanocomposites in various pH solutions and their reswelling capability in distilled water were also systematically evaluated. FTIR spectra revealed that the P–OH groups of HP participated in graft polymerization reaction with AA. TEM analysis showed the needle-like crystals of HP present in the PAA/HP nanocomposite with a diameter of about 40 nm and a length of about 270 nm. The swelling rate and reswelling capability of the superabsorbents were improved due to the introduction of HP into PAA polymeric network, and this result implied that the nanocomposites acted as a recyclable water-saving material.
Synthesis of Polyaniline Nanoparticles
Authors: Li Fang , Qin Xue
Published: January 2010

The polyaniline(PANI) nanoparticles were synthesized with alcohol solvent at first. The microstructure of PANI nanoparticles were characterized by scanning electron microscope (SEM), Fourier transfer infrared spectroscopy (FTIR). The electrochemical performances of the samples were tested. The results showed that the diameters of PANI nanoparticles were 50-200nm. As the supercapacitor materials, PANI nanoparticles were suitable for the green energy materials.
Synthesis of the Novel Porous Carbon Nanotubes
Authors: Qin Xue , Li Fang
Published: January 2010

Synthesis of porous carbon nanotubes using the anodic aluminium oxide (AAO) template method, by decomposing sucrose on AAO, was reported. The surface area of the porous carbon nanotubes calculated by the BET method was 375 m2•g-1. The porous carbon nanotubes would be expected to have a potential application in the field of catalyst supports, hydrogen storage material and new nano-devices.
Evaluation of Energy Efficiency of Heat Emission Coating
Authors: Dong Cun Li , Liang Jin Sheng , Xue Gang , Wang Yan Qing
Published: January 2010

Experimental device and principle were proposed with the aim of giving a method to evaluate energy efficiency of heat emission coating in this paper. The formula for calculating energy saving efficiency of heat emission coating was given based on heat dissipating capacity obtained. The results showed that the method was effective for evaluation of energy efficiency of heat emission coating with an error of 0.32%.
Evaluation of Healthy Living Water
Authors: Jin Zong Zhe , Hu Bo
Published: January 2010

An evaluation of healthy living water was studied. The oxidation-reduction potential (ORP) and pH values of spring in the longevity village, activated water, tap water were investigated in the paper. It was found that ORP was related to the longevity closely，and an evaluation method based ORP of healthy living water was provided. The research indicated that the evaluation was true of healthy food as well.
Research and University Education in Ecological Environment Functional Materials in China
Authors: Liang Jin Sheng , Wang Li Juan , Ding Yan , Liang Guang Chuan
Published: January 2010

The research progress and university education situation in ecological environment functional materials (EEFMS) in China were analyzed. A new subject of EEFMS involved in many subject knowledge, such as materials, energy and environment, has come into being due to the rapid development of the advance industry of energy and environment materials in the last decade, as well as a serial of new industries of micro-environment control functional materials, and so on. At the same time, the university education was accelerated in the direction of the research in EEFMS.
University Teaching of Effective Quality Engineering Based on the Compound Technological Talents Training
Authors: Ding Yan , Liang Jin Sheng , Liang Guang Chuan
Published: January 2010

The compound technological talents training of power source and ecomaterials (PSEM) is one of the most important development strategies for constructing a resource-saving and environment-friendly society. Effective Quality Engineering (EQE), using the engineering method to solve the quality problem of a new product, is a basic theory method. In this paper, the quality design method of EQE was integrated into the teaching of inorganic non-metallic professional courses. On this basis, the teaching mode of initiative introduction and requirement assisted reading was discussed. After six years of teaching practice, it is proved that the basic theory of EQE and the new teaching ways can be effectively applied to the training of compound technological talents of PSEM. Especially, through this method, the designed materials exhibit optimal quality.
Effect of Large Dose of Attapulgite on Animal Growth and Blood Microenvironment
Authors: Tang Qing Guo , Shen Shang Yue , Teng Bao Xia , Wang Li Juan , Wang Fei
Published: January 2010

Effect of acute toxicity and chronic toxicity on attapulgite for animal was studied by Kunming mice and SD rats experiment through administering intragastrically with large dose of attapulgite suspension. The results showed that the mice were normal and grew well, and they did not appear death and toxicity symptoms when they received the same amount as 286 times of the adult dose, indicating that attapulgite mineral powders did not contain acute toxicity and administering intragastrically with large dose of attapulgite suspension had no obvious influence on blood environment and normal growth of rats, and attapulgite did not contain chronic toxicity.
Electrodialytic Production of Hypophosphorous Acid with Six-Compartment Electrolytic Cell and Ti-PbO2 Anode
Authors: Guo Ai Hong , Wang Fu Sheng , Zhang Bao Gui
Published: January 2010

The hypophosphorous acid was achieved with the electrodialysis, which comprises a Ti-PbO2 anode, a stainless steel cathode and an aqueous solution of sodium hypophosphite. The process of producing hypophosphorous acid was studied. Some factors, such as anodic voltage, product concentration and current efficiency were conducted. The results showed that, six-compartment electrodialytic cell could be used to improve the hypophosphorous acid content and purity. The Ti-PbO2 electrode was optimal anode material to cut down the cost of production. The process was simple, low cost and high efficient, and it was a cleaner production without waste residue and waste water.
Facile Fabrication of Taper-Like BiVO4 Nanorods with High Photocatalytic Property under Sunlight Irradiation
Authors: Hou Lin Rui , Yuan Chang Zhou
Published: January 2010

We report the synthesis of the taper-like BiVO4 nanorods by employing a solid-state grinding synthetic strategy. The X-ray diffraction (XRD) indicates that the as-prepared BiVO4 nanorods were crystallized in a monoclinic system. The diameter and length of taper-like nanorods are confirmed by the scanning electron microscopy (SEM) technology. The diameter and length of the taper-like nanorods are 100 nm and 1 μm, respectively. And the photocatalytic activity of the taper-like BiVO4 nanorods was evaluated by measuring the degradation of methylene blue (MB) in water under sunlight irradiation. MB was degraded nearly to nothing under sunlight irradiation for 120 min at room temperature in air. These results indicate the as-prepared product is a good sun-driven photocatalyst. In addition, the degradation mechanism of methylene blue over BiVO4 nanorods was tentatively investigated.
Recent Advances in Green Composites
Authors: Gejo George , Kuruvilla Joseph , Boudenne Abderrahim , Sabu Thomas
Published: January 2010

This review aims at reporting on very recent developments in the, properties and applications of Green Composites. One very important aspect of green composites is that they can be designed and tailored to meet different requirements. Recent advances in natural fiber development offer significant oppurtunities for improved materials from renewable resources. Biocomposites offer a significant non-food market for crop-derived fibres and resins. Considerable growth has been seen in the use of biocomposites in the automotive and decking markets over the past decade or so, but application in other sectors has hitherto been limited. Recent developments of different biodegradable polymers and biocomposites are discussed in this review article.
Potential of Sisal Reinforced Biodegradable Polylactic Acid and Polyvinyl Alcohol Composites
Authors: Taha Iman M. , Ziegmann Gerhard
Published: January 2010

The application of natural fibres as polymer reinforcement is of extreme interest, especially in combination with biodegradable polymers. Such “green” composite represent a step forward to eco-design and environmentally friendly applications. The use of biodegradable polylactic acid (PLA) on the basis of renewable resources in addition to the biodegradable polyvinyl alcohol (PVA) on petrochemical basis is compared in this study with the application of polypropylene (PP) as a surrounding matrix for sisal fibres. According to the law of similarities, the chemically similar structure of natural fibres and PVA and PLA provides stronger fibre-matrix bonding characteristics compared to PP. This was experimentally validated applying single-fibre pull-out tests, where the effect of improved bonding is further investigated in terms of tensile and impact composite behaviour. SEM investigation was further applied to describe failure modes of natural fibre composites.
Numerical Optimization of the Structure of Fiber-Reinforced Composites
Authors: Wielage Bernhard , Müller Tobias , Weber Daisy , Maeder Thomas
Published: January 2010

Most composite components are constructed in a very safe way, with thick walls and many laminate layers. The potential of lightweight construction will not be fully tapped. In a typical computation of the behavior of a component, the wall thickness and fiber directions have to be entered into the simulation system. The result is the load-dependent deformation of the component. That approach takes a lot of time to get an optimized construction. A better way for optimizing fiber-reinforced composites is the use of simulation algorithms to get an optimal material distribution. In this case, the simulation output shows the optimal layer thickness and fiber directions for every node depending on the selected maximum deformations and the load of the structure. This method was used to reduce the weight of the special, extremely energy-saving vehicle called “Sax 3” of the student project “fortis saxonia” for the Shell Eco-marathon 2008. Thus it has become possible to keep the weight of the chassis of the vehicle under 10 kg. This shows the high potential of the implementation of this optimization approach for fiber-reinforced composites.
Effects of Laser Shock Processing on Corrosion Properties of 304 Stainless Steel
Authors: Kong De Jun , Miao Hong , Hu A.P.
Published: January 2010

The surface of 304 stainless steel was processed by laser shock wave, its surface micro-structures were observed with SEM, and residual stresses on its surface were measured with X-ray diffraction (XRD) stress tester, and the production mechanism of residual stress was analyzed. The experiment of stress corrosion in 25% NaCl aqueous solution was finished, the crack sensitivity of stress corrosion in NaCl aqueous solution was researched, and the effects of LSP on stress corrosion resistance were analyzed. The results shown that the refined hardened-layer is acquired on the surface of 304 stainless steel by LSP, and compressive residual stress has greatly increased, which improve availably the performances of stress corrosion resistant. The time of appearing cracks is inverse ratio with compressive residual stress, and LSP decreases effectively its stress corrosion cracks.
A Parametric Modeling Method for Thin-Walled Frame Parts
Authors: Wu H.B. , Liu Yuan Wei
Published: January 2010

In this study, a method called “house-building frame modeling” based on the APDL language is introduced firstly, and the finite element model of the milling distortion analysis is established for a platform structure with 192 frames by the method, and the prediction analysis of the milling distortion under different milling conditions is carried out, by means of 3-D finite element simulation technology. Comparing the simulation results and the measurement ones of the milling distortion, the proposed model is modified; the modeling method and prediction method are proved to be effective.
The Linear Programming Approach to Clamping Forces Determination with the Frictional Consideration
Authors: Qin Guo Hua , Lu Dong , Sun Shi Ping , Rong Yi Ming
Published: January 2010

In machining process, the workpiece is subject to cutting forces and torques. To resist these external loads, a fixture can supply clamping forces to completely restrain the workpiece. However, insufficient clamping forces cannot prevent the workpiece from translation and rotations, whereas excessive clamping forces may cause strongly the improper workpiece-fixture system deformations. Therefore, how to effectively determine the optimum clamping forces is the main objective of this paper. Firstly, a mechanistic model is proposed to measure the stability of clamping forces against these external loads. Secondly, a relaxation method is further established to true obtain the optimum clamping forces by solving the proposed model. The presented approach is conceptually simple and computationally efficient. It is particularly useful in the early stages of fixture design and process planning.
Anti-Vibration Performance Analysis of Honeycomb Paper
Authors: Xu Wen Qin , Sun Yi Dong , Lv Y.J.
Published: January 2010

Honeycomb paper has developed rapidly because of its hexagon core structure in casing area. One of the reasons is that honeycomb paper can prevent or lighten the vibration and concussion in the process of transportation. In this paper, the honeycomb paper with several different side lengths is studied. We studied the effect of their antivibration performance, offered certain theoretic direction to choose the side length of honeycomb paper and a method for antivibration analysis of honeycomb paper.
Design of Flow Stability System Based on Information Fusion
Authors: Du Yu Hong , Jiang Xiu Ming , Yang Gong Yuan , Zhao Zhen Hong
Published: January 2010

Stability of cotton flow velocity determines the accuracy of foreign fiber detection system. There are many factors affecting fiber flow flux. In the process of operational control, recent research has been directed towards synthetically and effectively adjusting the relative parameters, and thus achieving a stable and economic foreign fiber detection system in textile sector. In the foreign fiber detection system, the parameters of flow velocity are affected by the temperature, pressure, density, which are also interrelated and redundant information. Based on Clustering Fusion, the design of the flow velocity used in the detection device is provided in this paper. Using captured parameter characteristic information, clustering fusion control, conducts the second fusion for ART-2 and BP neural network, and sends to fusion center, then fusion center process the data using neural network method. Linking with synthesis repository and global data base, different control strategies can be utilized to adjust velocity of flow parameter. The cluster control strategy that keeps output velocity of flow stable are proposed to improve the fiber measure precision in foreign fiber detection system. This system can be used in indigenous foreign fiber detection system, and significantly improve the performance of the entire system.
Study on Turning of Ti-6Al-4V with Water Steam as Coolant and Lubricant in Green Machining
Authors: Zhang Yue , Han Rong Di , Tang Yan Li , Wang Y.
Published: January 2010

To achieve green cutting of titanium alloy Ti-6Al-4V with water steam cooling and lubricating, a 600-800w minitype generator is developed. Compared to dry and water-based emulsion, the using of water steam decreases the main cutting force and the cutting temperature respectively; enhances the machined surface appearance. And it can help to chip forming and breaking. Water steam application also improves Ti-6Al-4V machinability and prolongs the tool life. The excellent cooling and lubricating action of water steam could be summarized that water molecule has polarity, small diameter and high speed, can be easily and rapidly to proceed adsorption in the cutting zone. The results indicate that the using of water steam has the potential to attain the green cutting of titanium alloy.
Intelligence Monitor and Diagnosis to High Speed Brushes Aeration Mechanics Based on Turbulent Flow Displacement Sensing Theory
Authors: Liu H.I. , Li X.P. , Rui Yan Nian , He Ying Ping
Published: January 2010

High Speed Brushes Aeration Mechanics are the effective aeration equipments which are widely used in the environmental protection. Because of the big span of main spindle and its high speed when it is working, the breakdown sometimes occurs. It is very importance to monitor its condition and diagnose its breakdowns. Turbulent Flow Displacement Sensors are the non-contact types which are based on eddy current effect. It has many advantages, such as good linearity, wide frequency response scope, convenience installment and so on. So it is very suitable for the main spindle’s vibration signals of a high speed brushes aeration mechanic are monitored. With the development of Artificial Neural Networks technology, the equipment breakdown diagnosis has realized intellectualization. The recognition of equipment failure types is one of the most important studying domains of Artificial Neural Networks at present. Based on the research of eddy current effect and Artificial Neural Networks, we build up a test system which can monitor condition and diagnose breakdown to a GSB-12 high speed brushes aeration mechanic. With the help of it, the vibration signals of the measurement points on the main spindle are measured at two mutually vertical positions. The signals’ base frequency and multiplicative frequency are taken as characteristic value. Six common breakdowns are selected and to be taken as the standard sample and there are 3 lays in the neural network. Using FBP algorithm, we get a satisfied effect. The experiment has confirmed that this method is advanced, reliable and practical. It provides a new method about intelligent monitor and breakdown diagnosis to high speed brushes aeration mechanics’ condition.
Research on Look-Ahead Adaptive Interpolation of NURBS Based on de Boor Algorithm
Authors: Fan Y.Q. , Fu Jian Zhong , Gan W.F.
Published: January 2010

This paper realizes direct interpolation of NURBS with use of solving the non-linear equation and de Boor algorithm, which improves the efficiency greatly by avoiding computing the derivatives and basic functions; meanwhile, look-ahead adaptive interpolation algorithm (LAIA) adjusts the feedrate according to the curvature to guarantee the contour accuracy, and the new backtracking and re-interpolation strategy makes it more efficient. Reverse interpolation with use of NURBS symmetry is proposed to predict the deceleration point precisely. The algorithm performs very well in experiments, which prove its viability and reliability.
Study on ANFIS Application in Coal Mining Stray Current Security Prediction
Authors: Ma C.Y. , Zhang D.L. , Wang Zhi , Li G.X. , Tang J.J.
Published: January 2010

On basis of analyzing the principles and structure of adaptive neural fuzzy inference system (ANFIS), this thesis used subtractive clustering algorithm to get fuzzy inference rule numbers and confirm the network structure. In addition, the thesis built ANFIS model adapted to coal mining workface stray current security prediction. The model can do workface stray current security prediction by the easy measured parameters of non-production field. If the stray current exceeds standard, the system will alarm on time. Moreover, the thesis compared accuracy rate of the security prediction results under different membership functions. The results indicate that the prediction accuracy of ANFIS based on subtractive clustering is the highest and its computing speed is faster. The prediction results to practical project data indicate that stray current security prediction based on ANFIS has favorable practicality and effect.
Micro/Nano Functional Manufacturing: From Microthruster to Nano Energetic Material to Micro/Nano Initiator
Authors: Zhang K.L. , Ang Simon S. , Chou Siaw Kiang
Published: January 2010

Functional manufacturing technologies are becoming more and more important to the manufacturing industry and research. As promising categories of functional manufacturing, micro and nano manufacturing have received steadily growing interests in recent years. In this paper, as typical examples to demonstrate micro and nano manufacturing, our work on microthruster, nano energetic material, and micro/nano initiator is presented. Microspacecraft is one application of microsystem in space. In a microspacecraft, a micropropulsion system is required for station keeping, attitude control, and orbit adjust. New silicon and ceramic microthrusters are described. Energetic materials including propellants, explosives, and pyrotechnics have found diverse applications. Nano energetic materials (nEMs) have improved performances in energy release, ignition, and mechanical properties compared to their bulk/micro counterparts. A novel nano Al and CuO nanowire based nEM is discussed. Electro-explosive devices (EEDs) activated by electrical energy are used to initiate an explosive, burning, electrical, or mechanical train. EEDs have found numerous applications in triggering the inflation of airbags in automobiles, micropropulsion, and arm fire/safe devices for ordnance systems. An innovative EED is developed by integrating Al/CuO based nEM with a Au/Pt/Cr micro heater on a substrate.
Effect of Input Power on the Deposition of Optical Grade Thick Diamond Film in a DCPJ CVD Jet System
Authors: Chen Rong Fa , Shen Zhao Xia , Dai Liang Gang , Zhang Xian Liang , Zhu Rui , Zuo Dun Wen
Published: January 2010

High quality optical grade thick diamond film wafers with different thickness are prepared by high power DC arc plasma jet CVD (DCPJ CVD) method using a CH4/Ar/H2 gas mixture. Three different powers, 13.65, 15.40 and 17.94kW, were employed during the investigation. The aim was to investigate the effect of these powers on the deposition of thick diamond film. The controlled system was discussed together. The results show that the average diamond grain size and growth rate increase with input plasma power, but a further increase in input power, diamond thick-film defects and amorphous carbon content increased.
Parameters Optimization of Laser Processing CVD Diamond Film Based on FEM Simulation
Authors: Wu X.J. , Xu Feng , Zuo Dun Wen , Lu Wen Zhuang , Wang M.
Published: January 2010

Chemical vapor deposited (CVD) diamond film has a series of outstanding properties. However, it can not be easily machined by conventional technologies available currently for its high hardness and stability. Laser processing diamond film method can be an efficient way to process diamond film because of its high energy density. The mechanisms of laser processing diamond film are thermal oxidation, graphitization and evaporative ablation of graphite. Temperature distribution is of great importance to understand these complex phenomena taking place during the process because different temperatures lead to different physical and chemical changes of diamond. In this paper, the finite element method (FEM) software ANSYS is applied to calculate the temperature distribution. The relation between etching depth and laser machining parameters (laser power and scanning speed) is presented. The proper parameter ranges of laser power and scanning speed for a certain etching depth is also investigated with this method.
Bubble Image Processing Algorithm and Application in Vacuum Casting Equipment
Authors: Liu Yuan Yuan , Chi Z.F. , Wang J.W. , Zhang Hai Guang , Hu Qing Xi
Published: January 2010

Bubbles in the manufacturing process are common. The bubbles often lead to the decrease of the product’s surface quality and internal performance. This paper summarized the published researches and applications of the detection and processing for bubble images, of which the advantages and disadvantages were also presented. Based on the above mentioned results, this paper then proposed a new bubble image processing algorithm for vacuum casting process, in which the characteristics of the bubbles in vacuum casting process and the problems possibly caused in detail were analyzed. According to the characteristics of bubbles in vacuum casting process, an image processing algorithms was designed using Matlab. The simulation result showed the efficiency of the proposed algorithm.
Connotation and Design Principles for Quality Evaluation Indicator System of Cooperative Education
Authors: Du Guo Feng , Zhao Y.
Published: January 2010

General evaluation is the complex of a variety of evaluation indicator. The evaluation result is objective and accurate or not, it is influenced by many factors. The first factor is whether evaluation indicator is comprehensive and representative, the second one is whether indicator weight is scientific and reasonable, the third one is whether evaluation standard is complete and realistic, and in the end, evaluation result is related to the design of evaluation indicator. On the basis of the study for connotation of cooperative education quality evaluation indicator, the design principles of evaluation indicator is established.
The Research of Industry-University Collaboration in Market Economy
Authors: Zhao Y. , Zeng W. , Wan Z.C.
Published: January 2010

This article studies deeply motive forces of cooperative education in our market economic condition from students, schools, businesses and community. The research believes: Students are the mainstay of cooperative education, the motive force comes from knowledge, improving their comprehensive quality and enhancing the competitiveness of society; Schools are the "stage", and its motive force comes from improving the quality of teaching and from the transformation of accelerating scientific research; Enterprise is the guide, its motive force comes from cost savings and the attraction of talent, the using of technical results of colleges and universities to update the results of scientific research; The society provides a good environment for cooperation education. The development of cooperative education needs the community's participation and support. The study results give some good advices to promote cooperative education more.
Applications of Pro/Program in Parametrical Modeling of Mechanical Components
Authors: Song J.L.
Published: January 2010

Based on parametric techniques, feature techniques, and feature-based parametric modeling techniques, the system of the parametric feature modeling techniques family and its modeling method were put forward to realize rapid and efficient modeling. The technical term of family table, the steps and characteristics of family table modeling were proposed firstly. Then, Pro/program and its application in the parametric modeling of mechanical products were discussed in detail, and a feature-based parametric prototype was developed by UDF. Finally, a running example of feature-prototype for spur gears was given to demonstrate the validity and efficiency of the feature-based parametric modeling techniques family.
The Vibration Monitoring Standards of Desulphurization Fans and the Monitoring and Intelligent System of Identifying Failure
Authors: Chen S.S. , Li G.Y. , He L.B.
Published: January 2010

A typical fan desulphurization measuring points (failure-prone region), according to measurement data on many occasions, its failure to find the development trend of the equipment malfunction and made more accurate judgments. At the same time, the preparation of the equipment, the corresponding vibration diagnostic criteria and common fault identification intelligent system and continuously updated to facilitate site inspection personnel equipment vibration condition monitoring work and improve their equipment to grasp the operation of the accuracy and efficiency.
Electroplating of Compound Ni–SiC Coatings and Improvement of Wear Resistance
Authors: Fan Hui
Published: January 2010

Ni-SiC nano-composite coatings with various contents of SiC nano-particulates were prepared by means of the conventional electrodeposition in a nickel-plating bath containing SiC nano-particulates to be co-deposited. The surface morphology and structural constituent in the electrolyte layer were observed by SEM and EDS. The dependence of SiC nano-particulates amount in the nano-composite coatings was investigated in relation to the SiC concentration in bath. The effect of SiC nano-particulate incorporation content on micro-hardness as well as wear-resistance was studied too. The results showed that the nano-Ni-SiC plating layer had smooth and flat surface, uniform microstructure as well as higher micro-hardness and wear-resistance than pure Ni coating. The optimum experimental parameters were derived at condition of, addition of 6g/L SiC nano-particulates in the bath, 40°C temperature, current density of 4A/dm2 , and a stirring rate of 250rpm.
Experimental Research on Cutting Forces of 5-Axis Milling of Al-Alloy Blade
Authors: Liu Jin Hui , Bu Guang Bin , Zhao C. , Zuo Dun Wen , Wang M.
Published: January 2010

The cutting force in manufacture process was observed with Kistler dynamometer. A special clamp was designed to simulate the real condition of blade cutting. Series of experiments were done. Cutting force reflected structure of the blade and movement of machine. Cutting force was changed with feed speed varied and the rotation of axis B & C. Resultant cutting force was uniform in back and basin of blade and increased with cutting speed went up. Resultant force was waved in edge of blade. Back and basin forces were lager than edge force in X direction. Force X invoked vibration.
Volumetric Error Modeling and Analysis for CNC Machine Tool Based on Multi-Body System
Authors: He Zhen Ya , Fu Jian Zhong , Yao Xin Hua
Published: January 2010

With the development of the CNC precision machining and the ultra-precision machining, machine tools error issue has became the most active research topics and concerned by more and more experts. In this paper, a rapid simulation software platform based on multi-body system theory and Matlab software for measurement and analysis geometric errors of CNC machine tool is presented, which includes the generation of simulated measurement data, data processing, error separation and error compensation etc. To verify the feasibility of the developed software, the sequential step diagonal vector measurement method has been analyzed. The experimental results show that after error compensation the machine performance is improved by 39%. It demonstrates that the sequential step diagonal vector measurement method could significantly improve the machine accuracy and the developed software platform is reliable. This platform is not only effective for step diagonal vector measurement method, but also can be applied to other measurements. Therefore, the software platform provides a fast, reliable and objective tool for machine error measurement and analysis.
Reducing the Malfunction Signal Noise from NC Machine Tool Bearing Based on the Kalman Filtration
Authors: Wang Xiao Jun , Fu Xiao Guang , Luo Y.S.
Published: January 2010

Surface desquamation is the major performance of the NC machine tool malfunction. The malfunction can be diagnosed through whether running character frequency and its harmonic wave of the bearing inner ring or outer ring is present in the shock vibration produced by the malfunction. This article establishes a dynamic model of surface desquamation, a bearing vibration state model and observation model. Meanwhile the vector of the model is obtained. It has been proved through emulation and experiments that bearing malfunction signal can be effectively traced and estimated by Kalman filtration.
Analysis and Research of Honeycomb Sandwich Structure for MicroSatellite Based on Equivalent Theory
Authors: Zheng Kan , Liao W.H. , Qin Y.T.
Published: January 2010

With the honeycomb sandwich structure widely used in aerospace, the research of its mechanical properties becomes especially important. All of the finite element analysis software have no corresponding cell library, so before the analysis, the honeycomb sandwich panels should be equivalent processed. The paper by taking the floor of a microsatellite as the research object, used the equivalent plate theory and sandwich plate theory for equivalent processing, then adopted the finite element software to analyze the mechanical properties of the floor under two alternative condition. By compared with analytical solution, the equivalent results were reasonable, and the two methods were basically identical. Meanwhile, the equivalent results provided the reliable basis for the satellite structure optimum design and mechanical test.
Design of Virtual Enterprises’ Organization Based on Supply Chain Management
Authors: Ying K.F.
Published: January 2010

According to the particularity of VE, this article discussed the organization patterns of VE. Based on that, it has brought forward and designed virtual enterprises’ organization based on the management thoughts of supply chain and information system network on integrated coordinated management.
Simulation of Temperature Field during Double-Sided Multi-Layer TIG Welding and Determination of its Thermal Efficiency
Authors: Huang Ming Min , Zuo Dun Wen , Wang Hong Feng , Li X.F. , Wang M.
Published: January 2010

In order to provide effective guarantee for the prediction of residual stress and deformation after welding process of large-sized aluminum alloy structures, temperature field and thermal efficiency during double-sided multi-layer TIG welding of aluminum alloy was studied. By integratedly considering temperature-depended material properties, convection, radiation, filling rate of solders, et al, numerical analysis about the form of molten pool and temperature field was given. Element birth and death technique was taken during the simulation. Double-sided multi-layer TIG welding experiment was carried out and sample of cross section of weld seam after welding was prepared. By trying different thermal efficiency for calculation, simulation result consistent with experimental result was obtained finally, making the present thermal efficiency as the aim result for study. Confirmation was given by comparing temperature value from experiment with simulation one.
The Application of Measurement System Analysis in the Experimental Platform of Large Electronic Current
Authors: Wu H.Z. , Wei X.J. , Li W.H.
Published: January 2010

The article discusses the application of MSA in the process of quality control of production, under the relevant requirements in ISO/TS16949. With DWST experimental platform of large electronic current as an example, it analyzes the data achievement, the application of statistics and the methods of analysis report in the evaluation of variations on bias, stability, linearity, repeatability and reproducibility. The research gives a guide to the effective implement of MSA in the production and manufacture.
Research of Cutter Track Elimination Algorithm for CNC Cam Grinding Based on Cubic Spline Curve Fitting and Spline Interpolation
Authors: Huang W.S. , Mao G.Y. , Zhang J.S.
Published: January 2010

Cam is the key component of many important types of equipment. To improve the surface precision of cam, and to eliminate the cutter track, the production data format is analyzed in this paper, a conclusion that the big second derivative is the origin of track is reached. An algorithm to eliminate cutter track is brought forward, spline curve fitting is used to process the discreted data, and spline interpolation is used hereafter such that the second derivative is reduced to an acceptable range. The experiment shows that this method can efficiently eliminate the track on the surface, so as to improve the productivity of equipments.
Analysis and Modifying of Injection-Mold for Notebook Computer Housing by CAE
Authors: Liu Bai , Liu X.J. , Liao Long , Du Y.B.
Published: January 2010

In the paper, C-Mold software was applied to the analysis of injecting molding of the notebook computer housing so as to solve the main problems of warpage and injection unbalance of the product. According to the results of filling analysis, the problem has been found out and the mold design has been improved. The described case showed the capability of CAE to find the reasons that cause warpage, duration of cooling period, sink mark, blush, color variation and shrinkage directly or indirectly. Thus, CAE analysis has a wide application prospects in injection molding.
A Study on Intelligence Recognition Algorithm Based on Mechanical Seal Fault Feature
Authors: Zhao X.R. , Yu Shi Xiang
Published: January 2010

This paper analyzes the leakage reasons of mechanical shaft seals used usually in water-dripper or industry pumps, a basic flowchart of leakage analysis is proposed. Based on the above contents, an intelligence recognition algorithm for judging seal fault feature is given, so an intelligent fault judgment system based on the knowledge may be constructed.
Tribological Properties of the DLC/SEBS/A187/Si Elastomeric Nanocomposite Multilayer Film
Authors: Cheng Guang Gui , Ding J.N. , Ling Zhi Yong , Fan Zhen
Published: January 2010

A DLC/SEBS/A187/Si multilayer was prepared by self-assembled monolayer (SAM) method and pulse filtered catholic vacuum arc source (FCVA) technology. Microstructure and frictional properties of the film were investigated by using X-ray photoelectron spectroscopy (XPS), AFM, SEM and UMT-2MT tribometer. Results showed that the peaks appearing at 287.8eV for XPS demonstrated the successfully graft of SEBS on the couple agent(A187); The surface of the top DLC film was compactly and uniformly distributed; Friction coefficient of the prepared film was not sensitive to velocity under low load and the coefficient ranged from 0.1 to 0.15, but at high load, the tribological property of the film deteriorated with the increasing of sliding velocity, when the normal load was 2N and the sliding speed was 30 r/min, only the top DLC film was scratched out, but when the sliding velocity increased to 240 r/min, the whole prepared film was scratched out.
Construction of the Error Signal Source Library and Virtual Real-Time Presentation of Machining Errors
Authors: Gu Li Zhi , Zhang Z.J , Xiang Chun Jiang
Published: January 2010

Based on the analysis of origination of the machining errors, and selection of major influencing factors - those errors rising from the machine tool, the fixture, and the cutting tool, the error signal source library was created at the sampling points on coordinates X, Y, and Z. By making use of the written knowledge and workshop experience, the library was extendable and built with technique of ADO database access. And virtual real-time presentation of machining errors on the machined surfaces was also constructed with a mathematical model of weighed random method, considering the error of the sampling points and the drifting of the sampling points themselves from the perfect position. And a virtual measurement system was formed for the test of errors of the machined surfaces of mechanical components programmed with Visual C++ 6.0and OpenGL 3Dgraphical library. An example of the step-shaft with five kinds of tolerances was given and has been shown that the virtual system with the extendable library of errors and model for weighed random method was practical. Such weighed random method presented well the real errors of processing operations on the field with the proper model showing the principle of the error origination in metal machining.
Design of Ethernet-Based Constant Pressure Water Supply and Remote Monitoring System
Authors: Liu G.X. , Ma H.T. , Yuan D.H.
Published: January 2010

To realize the constant pressure water supply, a frequency converter is used to control the periodic duty of three pumps in this paper. Then, the communication between host computer and field control equipment is studied and realized by using industry Ethernet Graphical control interface, and remote monitoring is realized.
Thermal Field Analysis of Single Pulse EDM in Gas
Authors: Wang Tong , Xie Shu Qiang , Xu Xiao Cun
Published: January 2010

To explore machining properties of the EDM in gas basically, thermal fields of single pulse discharge in gas and liquid were analyzed by FEM software ANSYS. Crater size and thermal strain graph affected by instantaneous high temperature owing to single spark were simulated. They can provide references for optimizing parameters of comparative experiments of single pulse EDM in liquid and gas.