bluuebunny/crossref_metadata_2025 huggingface dataset:
Alloy and Powder Preparation of High Niobium Containing TiAl Based Alloys
Authors: Zeng Hong Jie , Zhang Lai Qi , Lin Jun Pin , Zhang Shao Jie , Chen Guo Liang
Published: October 2011

High Nb containing TiAl based alloys exhibit excellent corrosion resistance to molten zinc. They are expected to serve as the potential coating materials of corrosion resistance to molten zinc. Four TiAl-Nb alloys of good oxidation resistance and their powders were prepared by arc-melting and ball milling, respectively. The Microstructure, Hardness, Coefficient of thermal expansion, and grain size distribution of four as-cast TiAl-Nb alloys and their powders were investigated. In addition, EPMA analysis was employed to further examine the existential state of element Y in as-cast TiAl-Nb alloys. It was found that element Y existed in the form of YAl2 phase in the grain boundaries and triple junctions. Higher content of Al in TiAl-Nb alloy results in bigger Coefficient of thermal expansion. Lamellar microstructures and fine grains exert a positive influence on hardness. Powders prepared by ball milling displayed angular and irregular morphology.
Study on a New Technological Scheme for Cold Press Forging Forming of Step Holes in Thick Sheet Metal
Authors: Liu Jian Lin , Wang Ke Sheng , Chen Xiao Wei
Published: October 2011

An new technological scheme for a two-step cold press forging of step holes in a thick metal sheet was proposed . Finite element analysis on the two-step process is carried out by using DEFORM-3D. Velocity shade contours are obtained. The study shows that the technique can form step holes in thick sheet metal and increase their strength, According to the numerical simulation’s process parameter, an experimental die is designed, the FEA results are in good agreement with the experimental data.
Research and Analysis of Dry Crushed Waste Tire Processing
Authors: Yang Jia , Yang Song Ge , Qiu Li Jun
Published: October 2011

For the treatment of waste tires and waste tire reuse has become an important task in today's society. Waste tire processing methods are: restructuring the use of the prototype. Energy use of waste tires as fuel will use high-temperature heating with thermal decomposition of waste tires, to promote its decomposition into oil, combustible gas, carbon. Scrap tire retreading. Powder production and other means. By mechanical means will be used after the tire tread and some other parts of the split will be obtained after crushing the powder material is powder. Currently the main mode of production has powder dry grinding, cryogenic grinding and wet grinding method. Different methods produce different particle size range of powder, powder surface morphology is also different. Dry grinding, wet grinding and cryogenic grinding of the legal system into a powder particle size in the range of 0.3 mm ~ 1.5 mm, 0.075 mm ~ 0.3 mm and 0.075 mm or less. Dry grinding method because of his production and processing simple process has been widely used in powder production process. For dry grinding process and mechanical work made for the research and analysis.
Intelligent Vehicle-Mounted Alcohol Detection Control System
Authors: Li Fu Peng , Jiang Min Lan , Guo Zhang Ying
Published: October 2011

The paper designed an intelligent vehicle-mounted alcohol detection control system, which is based on S3C2440 chip. The system tested the driver's response ability and eye-hand coordination in interactive way to determine whether the driver could control the vehicle. The system introduced psychology method innovatively. It can overcome the disadvantage of only depending on the gas alcohol concentration as the control basis, and enhance the applicability of the system.
Neural Network-Based Reliability Prediction of Free-Running Submarine Model Test System
Authors: Liu Ou , Wang Wei , Yang Chun Hui
Published: October 2011

In response to the issue that FMECA and FTA analysis in the initial experimental and testing stage of free-running submarine model cannot satisfy the actual requirements, a method based on BP neural network is proposed to conduct reliability prediction of free-running submarine models. By inputting the established parameters of free-running submarine models (MTBF) as a BP neural network into neurons and by training the network, the purpose of predicting the reliability of free-running submarine model test system was fulfilled. The simulation results show that the method is effective, feasible and practically meaningful, producing smaller prediction errors.
Design of the Automatic Position Block for the Punched Holes on Angle Steel of Transmission Tower
Authors: Wang Xiao Lin , Wang Xiao Shi , Li Ke Tian
Published: October 2011

It is proposed that the design and operation process of the automatic position block for the holes punching used for the angle steel of transmission tower structure. It consists of position block, slide block, screw, nut, motor, and controller. If the anchor points have been set, the hole punching position can be anchored automatically, and setting the anchor points are easy operated. It can equipped in punching press, and improve greatly the current hole punching process.
Automatic Assembly and Key Technologies of Expansion Joints
Authors: Fang Yan Kai
Published: October 2011

Expansion joints are non-standard devices whose shape and parameters could vary with temperature, pressure, displacement and cycle life, so it's drawing work is very burdensome. Expansion joint industry is badly in need a set of accurate, reliable and stong practical professional graphics software. Therefore this paper carried out targeted secondary development of the software on the basis of digestion and absorption of SolidWorks2010 so as to meet the urgent needs of expansion joints industry. The structure of most parts of bellows expansion joints is not complex, and their geometry are relatively simple and fixed, so it is very suitable for parametric modeling method.
Super-Resolution Reconstruction of Underground Mine Surveillance Images Based on MAP
Authors: Fan Guo Liang , Wang Zhen Chong , Zhao Yan Qin
Published: October 2011

Underground mine surveillance can record the situation of coal production site timely and accurately. Because of the poor quality of air, inadequate lighting, lower monitor equipment resolution, surveillance images are blurred. This paper makes full use of the complementary information between surveillance images sequence. And we reconstruct high resolution images by using of maximum a posteriori (MAP) algorithm. Experiment results show that the reconstructed images can reflect the detail of the underground mine surveillance images. Compared with the traditional interpolation results, the reconstructed images avoid jagged effect and overall fuzzy. The PSNR of images are also improved.
Numerical Simulation Analysis of High-Voltage Transmission Tower
Authors: Lin Hai Xiao , Ma Xiao Chuan , Cai Wen Long
Published: October 2011

With the rapid development of Chinese economy construction, hv transmission line has become the main channel for long-distance power transmission and also the most basic conveyance systems and infrastructure for industrial and mining enterprises. The major coal mine fields in China have hv transmission lines passing above. Coal mining subsidence has an important influence on the line tower. So it is important to study the High-voltage transmission line tower to ensure its safety. In this paper, the model is a High-voltage transmission tower. The mechanical analyses for the tower under different boundary conditions are made by finite element simulation. The results can be used as reference for the design of high-voltage transmission line tower in mining area.
Numerical Analysis for the Multi-Point Stretch Forming Process of Aircraft Skin Panel
Authors: Deng Yu Shan , Yao Yuan , Wang Shao Hui
Published: October 2011

Multi-point stretch forming (MPSF) is a new technique to form aircraft outer skin panel. Since multi-point die is composed by the discrete punches, the result of the MPSF aircraft outer skin panel need to study in depth. The thickness of elastic cushion and free length are two important factors to affect the accuracy, and they must be chosen reasonably. A series of numerical simulations on typical MPSF processes were carried out to an aircraft outer skin panel part. The results show that the thicker the elastic cushion is, the more valid the dimple will be suppressed .The longer free length is, the smaller the equivalent strain and thinning and more uniform the distribution of thickness will be. When the free length is shorter, the degree of effect is relatively obvious on the equivalent strain and thinning and the distribution of thickness; when the free length is longer than a certain value, the degree of effect is small.
Application of SPC in the Quality Control of the Leaf Tobacco Threshing and Redrying Production
Authors: Huang Peng Peng , Liu Hai Wen
Published: October 2011

Considering the practical problems in the threshing and redrying production, in order to improve the manufacturing process quality, by using twice hot-air tobacco embellishing as the critical process in production flow and applying SPC technology, through the online data collection, this paper analyzed the causes of quality defects in the course of production and made adjustments. The conclusion is that SPC technology ensures the quality stability of the tobacco processing progress, and also strongly improves the process capability, which achieves the 3σ Control of product quality.
Study of Calibration Technology of AMT Clutch Control
Authors: Yue Fu Ying , Liu Hai Ou , Peng Jian Xin
Published: October 2011

This paper focuses on the calibration technology of AMT clutch control. A clutch control model for vehicle starting is established based on clutch engaging speed, and on this basis, an automatic calibration program for clutch control is developed. On-vehicle tests indicate that after automatic calibration, the effect of starting control has been greatly improved, and it can accomplish parameter calibrtion of clutch control briefly and accurately.
Dynamics of a Pair of Five-Neuron Networks with Delays
Authors: Mao Xiao Chen
Published: October 2011

This paper reveals the dynamical behaviors of a coupled network consisting of a pair of five-neuron loops and couplings between the individual loops. Delays are introduced into the couplings between loops and the connections within the individual loops. The local stability of the network equilibrium and the existence of Hopf bifurcation are discussed. Rich dynamical behaviors are numerically observed, such as multiple stability switches and multi-stability.
Fitting Methods by Cubic Spline Interpolation to Curved Surface Molding in Automobiles’ Covering Components
Authors: Yao Huan Xin , Niu Peng Cheng
Published: October 2011

In the curved surface molding of automobiles’ covering components, large amounts of data should first be sampled, and be fitted to curves with the conventional data-fitting method. Then the curves are connected to face and given corresponding molding processing, and the required effect of the curves is being smooth and accurate. The conventional data-fitting method is improved in this paper considering practical application, and the accuracy is increased with the same amount of sampling data. In practical application, this method can lessen labor intensity by decreasing measured data amount, which increases work efficiency and doesn’t affect the curve fitting accuracy. So it has good engineering application value.
Study on Word Association Knowledge and Reading Ability
Authors: Mao Ting
Published: October 2011

Improving reading comprehension ability has always been a big concern for the English learners. It is also one of the most important parameters to measure one’s English level. Research has found that many factors may influence the learners’ reading comprehension ability. In this paper one aspect of vocabulary, word association knowledge, has been proved to facilitate reading comprehension. Through Pearson Correlation and one-eay ANOVA analysis the authors found that word association knowledge had a significant influence on reading comprehension. New words cannot make any sense to the learner until they have been integrated into other knowledge that the learner has already acquired. The vocabulary students have already acquired is something like an associative network which is closely related to their prior experience of first language acquisition and their knowledge of the world. Therefore, both the width and depth of vocabulary should be integrated into English teaching.
Research on Mining Frequent Path and Prediction Algorithms of Object Movement Patterns in RFID Database
Authors: Hu Kong Fa , Zhao Li , Xu Yong Cheng , Chen Ling
Published: October 2011

RFID technology has been widely used and the main problem is how to process the massive path data generated. The most important work in quick access technology of the RFID Database is supply the information of object movement patterns for people, as mining frequent path. There is little research in this area so far, on the basis of Apriori, the MP-Mine algorithm proposed in this paper mines the time-related path sequence.Meanwhile, we analyse the performance of the MP-Mine. The theoretical analysis and the results of experiment indicate that the algorithm is very effective. At last, we propose corresponding prediction method, which is very useful and valuable for enterprises.
Facile Synthesis of Flake Copper Powder Loaded With Silver Particles
Authors: Tian Xiao Feng , Zhang Wei Ke
Published: October 2011

A fast and facile wet chemistry method has been developed for preparing monodispersed silver coated copper composite particles. Copper powder is coated using a solution containing [Ag (NH3)] +. The effect of the copper particle size distribution, the concentrations of [Ag (NH3)] + on composite particles conductivity were investigated. The composite particle with electric conductivity of 0.8×10-3 Ω•cm is obtained at 0.8 mol/L of Ag+ and1.0 g/L of dispersing agent. Copper powder loaded with silver particles morphologies range from individual particles to small islands, to the continuous multi-layers structure with Ag+ concentration increases.
Sinterability and Mechanical Properties of MnO2-Doped Y-TZP: The Effects of Holding Time Variations
Authors: Amiriyan Mahdi , Satgunam Meenaloshini , Sivakumar Sivanesan , Ramesh Singh , Tolouei Ranna
Published: October 2011

The effect of holding time variation and sintering temperature on the mechanical properties and sinterability of yttria stabilized tetragonal zirconia doped with 1 wt. % MnO2 was investigated. Samples were sintered at 1150-1500 °C with holding times varying from 12 and 120 minutes. Comparing to the MnO2-doped Y-TZP, longer holding time resulted in enhanced densification of the undoped Y-TZP samples. In the case of MnO2-doped Y-TZP however, Bulk density, Young’s modulus, Vickers hardness and fracture toughness results show the beneficial effect of MnO2 in enhancing the densification of Y-TZP ceramics.
Multi-Objective Optimization of Die-Sinking Electric Discharge Machining
Authors: Bharti Pushpendra S. , Maheshwari S. , Sharma C.
Published: October 2011

— Parametric optimization of electric discharge machining (EDM) is a challenging task. Many researchers have employed different multi-objective optimization techniques for the same. This work employs multi-response signal-to-noise (MRSN) technique to find the optimum factor/level combination of input parameters. Experiments have been conducted on die-sinking EDM by taking heat treated D2 steel as work piece and copper as tool electrode. Experiments have been designed as per Taguchi’s L36 orthogonal array. Two cases v.i.z. high cutting efficiency and high surface finish have been taken. Analysis of variance (ANOVA) is employed to indicate the level of significance of machining parameters in both the cases. Finally, results have been verified experimentally and a significant improvement in material removal rate and surface roughness is observed.
Phosphoric Acid Effect on Prepared Activated Carbon from Saudi Arabia’s Date Frond Waste
Authors: Yacob Abdul Rahim , Al Swaidan Hassan M.
Published: October 2011

High surface area activated carbon has always fascinated researchers for its application as adsorbent, for water purification, medical and industrial. Date is the major export of Saudi Arabia, while tons of date foliar and fronds are troublesome and yet to be disposed. Transforming this waste into usable activated carbon can be a good idea for recycling, sustainable and green chemistry. In this study, date tree frond is selected to prepare activated carbon, while the effect of phosphoric acid in chemical activation is studied. Using thermogravimetry analysis, it was found that 400oC was the best temperature to convert date frond to carbon. This is supported by FTIR spectroscopy. Various concentration of phosphoric acid is used to optimize the product high surface area carbon obtained and it was found the best is at 60% phosphoric acid with the highest surface area of 1139 m2g-1. This result is also supported by FTIR spectroscopy, which indicates the similarities between commercial carbon and the carbon prepared. FESEM pictographs show chemical activation using phosphoric acid can easily open up pores and cavity of the prepared activated carbon the get the high surface area. It is thus suggested that for mass production of high surface area carbon, date palm frond is used as the source of raw material, due to its abundance and availability comes from the pruning process on the date palm tree, while chemically activated to get the high surface area.
Modeling and Simulation of Moving Iron Linear Generator (MILG)
Authors: Fazal Imran , Noh Karsiti Mohd , Rama Rao K.S. , Zulkifli Saiful Azrin
Published: October 2011

Moving permanent magnet linear generator has some limitations such as thermal and impact force demagnetization, and complex control strategies. To overcome these limitations one of the solution is moving iron linear generators. This paper presents the analysis of flux using FEM for moving iron linear generator. The flux density varies with peak value of 0.85 for 6/1, 0.98 for 6/2 and 1.27 for 6/4 MILGs with the movement of translator. The effect of air gap on different MILGs is studied. The FEM analysis indicates that air gap have direct impact on output of the generator. The analysis is performed to replace the moving permanent magnet by moving iron in a different applications.
The Equivalent Numerical Simulation of Fractured-Vuggy Carbonate Reservoir
Authors: Xu X. , Tian S. S. , Xu T. , Su Y. X.
Published: October 2011

The storage spaces of carbonate reservoir are complicated, matrix pores, vugs, fractures and large caves are coexistence. Traditional numerical simulation methods have harsh requirement for geology model and computing method, these methods are not suitable for carbonate reservoir. A comparatively perfect equivalent permeability and porosity model for multi-media reservoir was developed based on the theory of equivalent continuum media and the law of equivalent seepage resistance. The equivalent parameters of a practical reservoir were calculated by this model, and a numerical simulation was carried out by using these parameters, the results showed that the equivalent numerical simulation of fractured-vuggy carbonate reservoir was reasonable.
Path Planning of UAVs in Urban Region Using Pythagorean Hodograph Curves
Authors: Shanmugavel Madhavan , Tsourdos Antonios , White Brian A. , Zbikowski Rafal
Published: October 2011

This paper presents path planning of UAVs for surveillance of an urban region. Firstly, the urban region is divided into areas of accessibility by triangulation. The area is accessible if the space above the area can accommodate the size and maneuverability of the UAVs. Thus a set of accessible areas within the region is generated to facilitate the safe flight path. Following this, a sequence of way points is generated in these areas at the centre of a line connecting the structures. The waypoints are interpolated using the Pythagorean Hodograph curves as they provide a smooth interpolation. As an initial phase of this research, path planning with single UAV in a randomly simulated urban region is presented.
Miniature Test Technique for Acquiring True Stress–Strain Curves for a Large Range of Strains Using a Tensile Test and Inverse Finite Element Method
Authors: Farrukh Hafeez , Desmukh M.N. , Asif Husain , Sehgal D.K.
Published: October 2011

The paper presents a non conventional technique to predict the constitutive behavior of materials by assessing the true stress–true strain relationship through miniature specimen tests. The miniature test was conducted on two different types of steel ring specimens (outer diameter14mm, inner diameter 8mm, thickeness 0.5mm) with V-notch (1mm depth) added diametrically to it. A finite element model was developed and validated to calculate the load–deflection curve obtained from the miniature specimen experiment. The constitutive behavior assigned to the specimen for the calculations was determined from the standard tensile test. Using an inverse methodology, it was possible to show that the constitutive behavior from the miniature tests using inverse FE procedure, and that from the conventional standard ASTM test bears close resemblance.
A New Angular Acceleration Guidance Law with Estimation Approach Based on Sliding Mode Observer against High Maneuvering Target
Authors: Song Yuan Yun , Chen Wan Chun , Yin Xing Liang
Published: October 2011

A new type of guidance law is developed for intercepting high maneuvering target. The law takes angular acceleration of line-of-sight as a primary input in place of the acceleration of target. As the significant required input quantity of the angular acceleration guidance (AAG), the angular acceleration of line-of-sight is estimated by a developed estimation approach based on sliding mode observer (SMO). Simulation results demonstrates advantages of this AAG guidance with the estimation approach based on SMO by comparing with the conventional guidance techniques and extended Kalman filter.
Development of the Flux Solution for Omission of Water Washing Treatment of Hot Dip Galvanizing Process
Authors: Moon Kyung Man , Lee Myung Hoon
Published: October 2011

Abstract. Hot dip galvanizing is being widely used to the numerous constructional steels such as a guard rail of high way, various types of structural steel for manufacturing ship and for some other fields etc.. Recently, the cost of zinc is getting higher and higher, thus, a proper manufacturing process should be developed possibly to reduce the cost of production. In this study, one of hot dip galvanizing process, that is, omission of water washing treatment which is performed after acid cleaning was investigated with some types of flux solution which is added with additives such as acid cleaning solution, NH4OH, Al(OH)3 and H2O2. The decrement of pH by omission of water washing treatment could be recovered to its original value due to neutralization reaction with addition of NH4OH. The flux solution added with both NH4OH and Al(OH)3 exhibited nearly the same color and pH value as those of original flux solution with no added, and the galvanized sample by using this flux solution tended to show a relatively good corrosion resistance compared to other samples treated with different types of flux solution. Furthermore, the flux solution added with NH4OH, Al(OH)3 and H2O2 exhibited a different color as that of original flux solution, and sediments were observed, in addition, its sample exhibited a lower corrosion resistance. Consequently, it is suggested that simplification of process, so-called, omission of water washing treatment may be able to achieve with development of an optimum type of flux solution added with additives.
Effects of Ga on the Corrosion Morphology of Al-Zn-Sn-Ga Anode Alloy
Authors: Wen Jiu Ba , Li Jun Feng , He Jun Guang , Ma Jing Ling
Published: October 2011

The corrosion behaviors of Al-Zn-Sn and Al-Zn-Sn-Ga alloys were investigated according to the results of immersion tests and corrosion morphology observation，and the Fermi energy of the precipitates was calculated by Materials Studio software for discussing the corrosion kinetics of precipitates . The results show that the Al-Zn phase with high Fermi energy (low corrosion potential) dissolved firstly, than caused the forming of Al-Ga amalgam which deposited between passive film and Al matrix. Meanwhile, the Al-Ga phase with higher Fermi energy dissolved too, which made the Al-Zn-Sn-Ga alloy continue to active, Finally, the Al-Zn-Sn-Ga alloy formed uniform corrosion morphology due to the effect of Al-Ga amalgam, while Al-Zn-Sn alloy formed the surface feature with the deep corrosion pits due to the "self-catalysis" mechanism.
Detection Experiments of High-Barrier and High-Temperature Sterilization and Easy Tear Flexible Plastic Packaging Materials Applied in Food Packaging
Authors: Wang Ling Yu , Huang Jun Yan , Cui Li Hua
Published: October 2011

In order to study the characteristics of a new kind of high-barrier and high-temperature sterilization and easy tear flexible plastic packaging materials applied in food packaging, the PET/AL/CPP was chosen as flexible plastic packaging material structure, different PET, CPP, alcohol inks, adhesives and other raw materials were selected for making a series of processing technology experiment and detection analysis. Then comparing the data obtained with the requirements, it was concluded that new flexible plastic packaging materials were extremely high resistance oxygen and resistance wet, high-temperature sterilization and good one-way easy tear, and etc.
Study Progress of Material Surface Modification with Large Scale Pulse Electron Beam
Authors: Hu Jian Jun , Zhang Gen Bao , Xu Hong Bin , Xu Tian Cai
Published: October 2011

Aim at technology of material surface modification with large scale pulse electron beam, the principle of electronic beam processing was analysed. Mechanism for material surface modification with large scale pulse electron beam was discussed. The technique of material surface modification was divided into dealing directly with electron beam and dealing after coating with electron beam. Then the state of art of material surface modification with large scale pulse electron beam was analysed. And existing problems were pointed out and the trend of develop was summaried.
The Effect of Pressure-Induced Flow Processing on the Tensile Properties and Crystal Structure of Polypropylene
Authors: Jiao Ming Li , Yang Kai , Zhang Wang Xi
Published: October 2011

Mechanical properties have close relation with microstructure. Based on orientation of the molecule chain in fiber, they show a rapid increase in tensile properties. Nevertheless, block materials mainly gain rise of mechanical properties by blend or composite, it is hardly proposed on the self-reinforced materials by optimizing the microstructure. In this work, the structure and tensile properties of polypropylene (PP), treated at 105°C for 5min under different pressure, were studied with microscopy, differential scanning calorimetry (DSC). The variety of supra-structure that the spherulite deforms into ellipse even fractures piece in the pressure field adds to the mechanical properties. The orderliness of crystal increases with the pressure, and Tm is increased slightly from the original level.
An Experimental Study on Relationship between (Meth)Acrylate Polymers Structure and its Film Surface Wettability
Authors: Zhang Yong , Wen Xiu Fang , Pi Pi Hui , Zheng Da Feng , Cai Zhi Qi , Cheng Jiang , Yang Zhuo Ru
Published: October 2011

The relationships between (meth)acrylate polymers structure and its film surface wettability were analyzed. A series of random (meth)acrylate polymers were prepared by the free radical solution polymerization and their coating film wettability was analyzed by measuring water contact angles(CAs). There are three kinds of functional groups on the surface, including methyl, ethyl and ester group, and the surface energy of ester group is greater than the others. The more ester group on the surface will result in the better surface hydrophilicity. Polymer structure parameters as the side chain length(m) and glass temperature(Tg) are taken into account in discussing the migration of functional group to the outermost surface. It was found that the less m and lower Tg will promote the motion of the side chain and hence cause the surface exhibiting more hydrophilicity.
Influence of Carbon Content on Fe-Cu Alloy Material Performance in Induction Motor with Compound Cage Rotor
Authors: Li Wei Li , Liu Xiao Chen , Cao Jun Ci
Published: October 2011

New type Fe-Cu alloy is used in the bar of induction motor with compound cage rotor(IMCCR). In this paper, the preparation of three kinds of Fe-Cu alloy is introduced. The influence of its microstructures, hardness and impact toughness is studied by using metalloscope and scanning electron microscope. Meanwhile, physical propertie such as resistivity, and B-H curve is tested by using magnetic testing device and bridge circuit. The influence of carbon content changing on microstructure and performance of Fe-Cu alloy is analysised, which has positive significance to the new type material using in motor.
Edge Drop Constituent Analysis of Cold Rolled Strip
Authors: Yang Guang Hui , Zhang Jie , Cao Jian Guo
Published: October 2011

Aiming at the strip edge drop control, the three dimensional finite element roll system models were built. From the point of the burdened load and deformation of the roll system, the reason which caused the strip edge drop and its composing were analyzed, and the critical width was proposed to control the strip edge drop. Based on the FEM analysis and industrial experiment, the VCR (Varying contact backup rolls) matching the EDW (Edge drop control work rolls) was designed and proposed independently. The application of such rolls gives better mill crown control ability, a high performance of work roll bending force and the improved strip edge drop, crown and flatness quality.
Description of Planer Anisotropy and Cyclic Plasticity Behavior of Aluminum Sheet Based on Crystal Plasticity Theory
Authors: Kobayashi Takumi , Kitayama Kohshiroh , Uemori Takeshi , Yoshida Fusahito
Published: October 2011

In sheet metal forming, the anisotropy and the Bauschinger effect of sheets affect greatly their formability. This paper discusses how the planar anisotropy and cyclic plastic behavior (the Bauschnger effect and cyclic workhardening characteristics) correlate with the crystallographic texture based on the crystal plasticity analysis on A5052-O sheet. The analytical predictions of r-values and the cyclic stress-strain responses are compared with the experimental observations (S. Tamura et al., Materials Trans, 52-5 (2011), pp.868-875).
A Study of Polyvinyl Chloride Modified by Barium Sulfate
Authors: Wu Hao , Cao You Ming
Published: October 2011

PVC/BaSO4 composites were prepared by melt blending method. The mechanical properties, microstructure and thermal stability of the composites were investigated. The results indicated that BaSO4 decreased the tensile yield stress and improved the elongation at break of PVC composites. Ductile fracture characteristics such were observed in the tensile fracture surface of PVC/BaSO4 composites. The toughening mechanism was cavitations toughening mechanism and shear zone toughening mechanism. The reaction of dehydrochlorination was limited by the addition of BaSO4.
Synthesis and Characterization of Thermoplastic Biomaterial Based on Acylated Chitosan Oligosaccharide
Authors: Li Feng Hong , Sun Yong , Li San Xi , Ma Shao Jun
Published: October 2011

A series of acylated chitosan oligosaccharides (LCSOs) were synthesized by reacting chitosan oligosaccharide (CSO) with lauroyl chloride in methane sulfonic acid. The chemical structures of LCSOs were characterized by Fourier transform infrared. Differential scanning calorimetry (DSC) showed that LCSOs had two phase transitions during heating. Thermoplastic chitosan oligosaccharide (LCSO-4) has distinct melting temperature (Tm) at 64 °C and 110°C. X-ray diffraction (XRD) analyses indicated that the crystal structure of CSO was changed through acylation and had created new crystal domains of lauroyl side chains. New strong diffraction peaks were observed around 2θ values of 20.0°, 21.5° and 26.3° for thermoplastic acylated chitosan oligosaccharide (LCSO-4). The melting and crystallization properties of thermoplastic acylated chitosan oligosaccharide were observed by polarized optical microscope (POM).
Investigation of Cutting Model in Machining of Al/SiCp Metal Matrix Composite
Authors: Nikouei Sayed Mohamad , Kouchakzadeh Mohammad Ali , Yousefi R. , Kadivar M.A.
Published: October 2011

Prediction of shear plane angle is a way for prediction of the mechanism of chip formation, machining forces and so on. In this study, Merchant and Lee-Shaffer theories are used to predict the shear plane angles and cutting forces in machining of Al/SiCpMMC. The experimental cutting forces are compared with the calculated cutting force based on shear plane angles extracted from Merchant and Lee-Shaffer theories. The variation of these cutting forces with cutting speed, feed rate and depth of cut has been discussed. The results show that Merchant theory may be used as a good method for prediction of chip formation in machining of Al/SiCpMMC.
Experimental Investigation on Surface Integrity in Grinding Titanium Alloys with Small Vitrified CBN Wheel
Authors: Li Liang Liang , Sun Yu Wen
Published: October 2011

Titanium alloys have been widely used in aerospace and manufacturing industry because of their unique high strength-weight ratio, fracture resistance, and superior resistance to corrosion. In this paper, a series of experiments were carried out to research the surface integrity in grinding Titanium alloy TC11 on a milling centre with small vitrified bond CBN wheel. Nine runs involved in the orthogonal array are designed in accordance with three factors at three levels. The surface roughness Ra 0.72 um and Rz 4.73 um are obtained. Subsequently ANOVA is employed to analyze the relative importance of all control factors on surface roughness and the optimal combination of grinding parameters is gotten. The measurement of microhardness is also taken and the microhardness profile is then drawn. The metallographic analysis shows that a plastically deformed layer are formed beneath the ground surface at 0~80 um and no white layer is observed. Experimental results validate the feasibility of grinding Titanium alloys on a milling machine with a small vitrified CBN small wheel.
CTOD Testing and Evaluation for Weld Joint for Heavy Thickness Offshore Structure Steel S355G10+N
Authors: Miao Zhang Mu , Miao Ting , Qiu Fu Xiang , Leng Shu Wei , Niu Li Na
Published: October 2011

The design and fabrication of offshore structure depend on material science and solid mechanics, such as steel processing technology and welding and materials testing and evaluation and so on. In this paper, CTOD (Crack Tip Opening Displacement) toughness test for weld joint of heavy thickness S355G10+N steel has been carried out to evaluate the fracture resistance of this weld joint under Submerged Arc Welding(SAW). The results show that (1) the weld joint of heavy thickness S355G10+N steel tested possesses excellent toughness. That is to say the materials in the weld joint possess enough capacity resisting the crack and propagation. Therefore the welding procedure specification evaluated can be applied to fabricate offshore structure. What is more, being at the case of as-weld condition for the weld joint the CTOD test was carried out herein, hence the offshore structure fabricated with the welding procedure specification evaluated can avoid the post welding heat treatment. (2) Different positions in weld joint have their special toughness. The position which is 2mm away from the fusion line (located in base metal) (FL+2) possesses best toughness (average value is 0.825mm). The fusion line position (FL) possesses slightly worse toughness (average value is 0.672mm). The weld metal position possesses worst toughness (average value is 0.553mm). This distribution character is different from other references reported and comparision has been made in this study. (3) Being a lower fracture toughness in weld metal, as a design suggestion high stresses should be avoided in this position.
Precision Forming and Die Design for Octahedral Shell of Static Stents
Authors: Liu Ting , Chen Xue Wen , Pei Shu Li
Published: October 2011

Static stents is the switch component that plays the role of fixing and supporting. It will received impact, the attrition and reverse function in the work process, which requires high mechanical properties to meet their work requirements. This paper uses the forming technology of "the pre-formation +warm extrusion + cold finishing "to form the static support ,and it carries on the numerical simulation and optimization analysis, which not only improve the work piece performance greatly and reduce the manufacturing cost.
Study on a Model for Perceived Text Definition of Multi-Stroke Chinese Character
Authors: Xu Yan Fang , Nan Lin , Jiang Gui Ping
Published: October 2011

IS0-13660 has defined line attributes in digital prints. In order to investigate the effect of these attributers on perceived text definition (PTD), the correlation model between the two was developed in this study. The test target with a multi-stroke Black Type Chinese character in two sizes of 6.5 and 10.5 points, as well as some single lines, was designed and printed, coming into being 16 test samples with different qualities. The objective line attribute measurements and subjective definition evaluations were carried out, and linear correlation model was built between the two. The experimental results indicate that the PTD could be relevant to line’s contrast, raggedness, blurriness and width, and is always positively relevant to the contrast and negatively relevant to the later three attributes.
Multi-Feature Fusion Based Object Detecting and Tracking
Authors: Lu Hong , Li Hong Sheng , Chai Lin , Fei Shu Min , Liu Guang Yun
Published: October 2011

A new approach is proposed to detect and track the moving object. The affine motion model and the non-parameter distribution model are utilized to represent the object firstly. Then the motion region of the object is detected by background difference while Kalman filter estimating its affine motion in next frame. Center association and mean shift are adopted to obtain the observation values. Finally, the distance variance and scale variance between the estimated and detected regions are used to fuse the observation values to acquire the measurement value. To correct fusion errors, the observable edges are employed. Experimental results show that the new method can successfully track the object under such case as merging, splitting, scale variation and scene noise.
Hydrodynamics of Oil Palm Frond in a Swirling Fluidized Bed Dryer
Authors: Mohideen Mohd Faizal , Sulaiman Shaharin Anwar , Raghavan Vijay Raj
Published: October 2011

This paper presents the hydrodynamics of chopped oil palm fronds (OPF) from cold flow experiments carried out in a swirling fluidized bed dryer (SFBD). The chopped OPF was 10 – 15 mm in size and falls in between Geldart type B and D. The OPF which consisted of leaves and petiole (stem) were first separated before studied individually due to their different physical characteristics. 2 bed loadings of 120g and 140g were investigated for bed pressure drop, (ΔPb), minimum fluidization velocity (Umf) and minimum swirling velocity (Ums) while regimes of operation were closely observed. The experiments yield that the OPF leaves and petiole have distinct hydrodynamic behavior due to their different bulk densities and voidage, hence suggesting drying should also be conducted separately unlike the current industrial practice. The leaves have lower Umf and Ums compared to the petiole and thus swirling motion was initiated earlier in SFBD when operating with leaves. Both samples however, have limited operating velocities due to elutriation. In conclusion, the SFBD was found to fluidize the chopped OPF well while providing good solid-gas contact which is highly desired for drying.
An Experimental Study on Electric Hot Milling for T10A Tool Steel
Authors: Chen Yu Cai , Wang Xi , Liu Li Bing , Liao Dong Ting , Wu Fei
Published: October 2011

This paper introduces a kind of electric hot milling method for T10A tool steel and analyses its feasibility. Collect temperature signals and vibration signals in the machining process by a set of signal acquisition system. Afterwards, process these signals by using wavelet transform and wavelet packet transform, compare and analyze them in different working conditions. The results of the study indicate that through comparison between dry milling and electric hot milling, the latter can be more effectively milling tool steel, and improve the cutting tool durability.
Studies on Stability of Peanut Mango Milk
Authors: Zhang Chu Shu , Yang Qing Li , Mou Ji Chao , Liu Zhi Qiang , Yu Li Na , Sun Jie , Bi Jie
Published: October 2011

The choice and consumption of emulsifier and stabilizer are one of the main factors affecting stability for peanut mango milk. The stabilizer of mango peanut milk was guar gum, the dosage was 0.15%; The optimum emulsifier was the mixture of sucrose fatty acid ester , monoglyceride and polyglycerol fatty acid ester(1:1:1), the dosage was 0.24%.The study developed a nutrient-rich, stable state of the organization of peanut mango milk.
Kinetic Analysis of Hydraulic Mount of Vehicular Engine Based on Fluid-Structure Interaction
Authors: Xu Zhi Jun , Yu Zeng Xin
Published: October 2011

A fluid-solid interaction FEM of entire hydraulic mount of vehicular engine are presented. The dynamic response of the hydraulic mount is simulated. By means of the simulated result of the mount transient response in time domain, the dynamic performance and transmissibility of the hydraulic mounts are calculated. the ALE method transforming reference frames is used to resolve the problem the reference frame of hydro-dynamical questions is different from the reference frame of structural questions.
Application Study of Wa Nationality Totem Symbol of Lincang in Modern Furniture Design
Authors: Li Wu Jian , Hu Rui Bo , Ye Xi , Li Na , Chen Hui
Published: October 2011

Today, the inheritance and protection of national culture become increasingly prominent. The findings can be seen that worship plays an important role in Wa nationality through the analysis of Cow Head and Wooden Drum in Wa’s totem worship. Combing with the design of specific cases and Wa’s totem worship, at the same time, extracted the national elements, furniture product design have been carried out. According to the aesthetic demand modern people and human body size scale, the design started which is not only good to realize national culture inheritance and protection, but also will push modern furniture design into the market. It is a good way to inherent and protect national culture, meanwhile, making a profit and reward.
An Investigation into the Earthquake Reaponses of Special-Shaped Arch Bridges
Authors: Kou Chang Huan , Yang Ming Chang , Ma Shih Wei , Wu Tsung Ta
Published: October 2011

By building a finite element model of a special-shaped arch bridge, this paper discusses the effects of the changes of the geometric shape, and the skewed angle of the girder and arch on the dynamic characteristics. In addition, this paper analyzes the longitudinal earthquake responses using the response spectrum method. The results show that when longitudinal earthquakes occur, all geometric shapes, and skewed angles of the girder and arch exhibit different levels of effect on the horizontal and vertical deformations of the girder and the arch, the internal forces of the arch, the girder, and the cables. Among all these parts of the bridge, the arch is affected most by the aforementioned factors. Moreover, because of the unique geometric shape of the special-shaped arch bridge, the distributions of initial and completed cable forces are complex. Therefore, obtaining regular stress responses from the special-shaped arch bridge is difficult regardless of whether the bridge is in-plane or out-of-plane. Hence, the arrangement of cable forces should be specifically considered when building an analytic model of a special-shaped arch bridge.
Rolling Element Defect Diagnosis Based on Local Mean Decomposition
Authors: He Tian , Liu Xian Dong , Shan Ying Chun , Pan Qiang
Published: October 2011

A method to extract rolling element fault characteristics from fault signal, based on local mean decomposition (LMD) and Fourier transform (FT), is introduced in this study. The LMD’s characteristics are obtained by processing multi-component frequency and amplitude modulation signal, which are usually used to describe the bearing fault signals. Base on the simulation analysis, the envelope spectrum method called LMD-FT is presented to deal with the vibration signals of rolling balling bearing with element fault. The results show that the rolling element defect can be diagnosed by LMD-FT effectively
Grain Growth Behaviors of Multicrystalline Silicon during Cold Crucible Continuous Casting
Authors: Huang Feng , Chen Rui Run , Guo Jing Jie , Ding Hong Sheng , Su Yan Qing , Yang Jie Ren , Fu Heng Zhi
Published: October 2011

A square shaped silicon ingot was cast by cold crucible continuous casting. The grain growth behaviors during different growth stages were investigated. In the first, grains nucleate at the base surface in the centre and in the three phase junction at periphery, and then grow upwards and inclined upwards separately. In the second, grain grow competitively, two distinguished zones are formed. In the final, a cap is formed on the liquid free surface, and precipitates are present.
The Continuity and Inheriting of Historical Context of Architecture during Urban Renewal in Chongqing
Authors: Wang Rui Ling , Li Shi Rong
Published: October 2011

Architecture is one of the most element of urban composition.During urban renewal, how to follow the characteristics of mountain, how to respect for history and local culture, how to continue and inherit historical context of architecture is the purpose of this article.The article puts forward some measures of continuing and inheriting historical context of architecture from planning, creating of mountainous architecture, protecting and managing,etc.
Study on Composite Model for Vibro-Replacement Stone Column Foundation by Finite Element Method
Authors: Fu Shao Jun , Zhu Chuan Cheng , Huang Zhen Ke
Published: October 2011

On the base of studying on mechanism of the deformation and bearing capacity of vibro-replacement stone column foundation thoroughly, the assumptive conditions are presented. The composite 2-dimension numerical model of the stone column is established, this model considers the couple of stress-strain with Biot consolidation and the reinforced efficiently, the finite element analysis program is developed according to this model. The reliability and validity of APOSE is verified by a simple example. The results show that APOSE can be applied to analyze the consolidation and subsiding for vibro-replacement stone column, etc
Crack Propagation of Jointed Rock and Application
Authors: Wang Jing , Zhu Wei Shen , Ma Hai Ping
Published: October 2011

Brittle media, such as rock mass, usually contain a great number of joints or cracks, which lead to varying mechanical properties and failure behaviors of different rock masses. In this paper, the DDARF method is adopted to simulate the crack initiation, propagation, coalescence and failure process in rock masses prefabricated with the different crack number and spacing under loading. The corresponding stress-strain curves and strength envelope are obtained. The parameters are applied in a case study. The differences in the failure behaviors of the intact and jointed rock masses after cavern excavation are analyzed and compared.