bluuebunny/crossref_metadata_2025 huggingface dataset:
New Technology of Ecological Textile Printing
Authors: Li Hong Mei
Published: September 2013

As textile printing technology continues to improve, fabric printing changes from in a technical workshop into a science hall. Hitherto unknown achievement is being made. Printing technology is going towards environmental protection, saving energy and reducing consumption. Ecological printing is not only the status what textile development needs, but also the development trend of textiles in future. This paper focuses on the ecological printing and special printing technology.
Numerical Simulation for the Cold Extrusion Process of the Worm Wheel Blank
Authors: Yuan Yu Hong , Zheng Wei Gang , Yin Cun Hong , Pan Zhen Min
Published: September 2013

The development of worm gear wheel blanks cold extrusion forming technology which can both reduce the manufacturing costs of the worm gear and enhance the Market competitiveness of products .Numerical simulation of cold extrusion forming technology of wheel blank was built by using Qform3D forging simulation software. That is, after the quantitative analysis of the distribution of stress fields and strain fields in the forming technology, determining the technology plan and conducting technology test, then the reasonable and feasible technology is designed. Cold extrusion can avoid the presence of the air gap, shrinkage and other tissue defects in the casting process, meanwhile raw materials can be saved 47% approximately than cutting.
Structural Optimization of Composite Wing Based on Different Blending Models Using Genetic Algorithm
Authors: Zhong Xiao Ping , Jin Peng
Published: September 2013

In previous studies guide-based blending including inner and outer blending has been found to be an efficient way to deal with large composite optimization problem considering structural integrity. A new blending model named generalized blending based on genetic algorithm for composite optimization is presented. First, On the basis of region division, a length-control indicator is introduced to decide the covered regions of each ply for the generalized blending model. Also, the master-slave parallel genetic algorithm (GA) is adopted to decrease optimization time. Finally, the three blending models are used for a large composite wing optimization. The result shows that the three optimal designs are manufacturable and the generalized blending model has more design freedom in blending designs.
Co-Simulation of Radar Antenna Azimuth Based on Adams and Simulink
Authors: Zhao Han , Wu Guan Hong , Zong Wei
Published: September 2013

Large antenna is susceptible to external influence in the actual work load; it causes the azimuth change and affects the radar work. In order to solve this problem, Adams and Simulink co-simulation method and the antenna board PID control are used. Simulation results show that angular variation of the callback can be achieved, and the response time can be greatly reduced less than 2 seconds. Keywords: Panel Antenna, Co-simulation, Azimuth control
The Study of How to Extrude the Special Shaft Parts into Form
Authors: Bai Xi Ping
Published: September 2013

In this article, it mainly describes the use of extrusion production process as an example of the special shaft. It gives us a full analysis from the structure of the product, the material problems, the key technical problems needed to be solved, blank preparation processing and the process of extrusion forming. It also introduces the blank dimensions and the calculation method of the extrusion pressure. The method of blank lubrication processing and the process of designing extrusion mould.We are not unfamiliar with the center shaft of the bike. It is one of the important parts in bicycle bottom bracket. It is also a key part to determine the quality of the bicycle. Generally speaking, materials are used is 20 steel. The roughness of the surface is moderate. But the requirement of the product precision is high. We can get it by using mechanical processing method. But it is processing and the efficiency is low. While the utilization rate of mental material is low. So the production costs high. Because the parts production patch is large and the annual production is hundreds of thousands of pieces. In my opinion, it is more reasonable for us to adopt the technology of producing the parts with the cold extrusion precision molding process. Then we can save the materials, improve the efficiency of producing parts, lower the production parts and then meet the requirement of mass production.
Prediction Methodology of Creep Performance from Stress Relaxation Measurements
Authors: Guo Jin Quan , Shi Hui Chao , Meng Wu Zhou
Published: September 2013

An estimation method to predict creep performances of high temperature structural materials has been proposed. The method is to use a simplified and normalized model of stress relaxation to derive creep strain rates and creep strain vs. time curves from stress relaxation measurements through an integrated analytical procedure according to the relationship between stress relaxation and creep. In order to validate the approach, the predicted results are compared to the experimental results of uni-axial isothermal creep tests conducted on 1Cr10NiMoW2VNbN steel with the same temperature of stress relaxation tests. Good agreement between results of relaxation tests and the predicted results indicates that the developed method can be recommended in the creep behavior evaluation of high temperature materials.
The Double-Layer Matching Design of Broad-Band Foam Cement Absorbing Panel for Electromagnetic Pollution Control
Authors: Wu Fan , Hao Wan Jun , Zhang Yue Fang , Wang Ming Ming , Chen Dong Wei , Yi Ying Ying , Zhao Hui Chao , Dong Yi Feng , Yu Xue Hong
Published: September 2013

Based on the principle of electromagnetic wave absorption, through the double-layer matching design and simulation analysis, taking foam cement panel as the dielectric material, combining with the resistive film, the paper has successfully prepared high-performance and broad-band foam cement absorbing panel for electromagnetic pollution control. The result shows, with the use of double-matching design that combines 140 Ω/□ resistive film with foam cement absorbing panel whose each layer thickness is 1.4 cm, in the S band , 100% of bandwidth below-10 dB and 95% of bandwidth below-14 dB can be reached, a maximum absorption of-19.6 dB at 2.45 GHz, the width of the absorption is far more than that of λ/4 type absorber. New materials can be used for the improvement of indoor electromagnetic environment and pollution control.
Crankshaft Fatigue Test and Statistical Distribution of Fatigue Experimental Data
Authors: Wang Zhi Ming , Lv Peng Min
Published: September 2013

This study has finished the crankshaft fatigue strength test by the rational experimental method. And based on the experimental data, the statistical regression analysis of eight commonly used hypothesis distributions, namely Weibull (two-and three-parameter), normal, lognormal, extreme minimum value, extreme maximum value, and exponential (one-and two-parameter), are developed. Then the degree of fitting effect between the experimental data with the eight statistical distributions is evaluated. The result shows that six kinds of statistical distributions, including Weibull (two-and three-parameter), normal, lognormal, extreme minimum value, extreme maximum value, have good fitting effect. In all distributions, the best one is three-parameter Weibull distribution.
Deflection Computations of the Double Composite Cantilever Beam
Authors: Wei Juan , Shi Wen Pu
Published: September 2013

Considering of the hypothesis of small deformation, the deflection approximate
differential equation of beam and integration equation theory and numerical methods are used to the
deflection problems of the double composite cantilever beam. The deflection problem of the double
composite beam with smooth interface under a point vertical force acting on the beam end are
analyzed concretely, the analytical solutions of the touching distributing force and the cross section
rotation angle function are given, and the concrete method of computing the beam deflection
is put forward based on the Gauss-Legendre integration formula, the results of the given example
show the validity. The methods and the conclusions here can be extended to study the deflection
problems of composite cantilever beam with arbitrary layers and the deflection problems of
composite beams with other supporting condition, they are important to the designs of the
engineering beams.
Application of the Roof Leakage Infrared Detection Technology
Authors: Zeng Xiao Wen , Zhang Yong Mei
Published: September 2013

The infrared thermal imagery technology receives more and more attention in the civil engineering because of its unique advantages. But there is still room for more in-depth theoretical and experimental studies in the aspect of its applicable scope, test method, the result and the precision analysis and so on. Through the research of the infrared thermogram of water-containing and insulation-free roof specimen and glass fiber insulation roofing specimen, this paper mainly analyzes the factors which influence detection of the roof leakage by using infrared thermal method and gives some suggestion for the application of infrared thermal imaging in the roof leak detection. Thus it provides the theory basis and the technical reference for the actual infrared non-destructive testing.
Automatic Frozen Soil and Dry Soil Observation System Based on GPRS Transmission
Authors: Xue Long Qin , Ye Lin Mao , Chen Hai Bo , Shi Li Kui
Published: September 2013

This article introduces the system of automatic frozen soil and dry soil observation and its application in china. The system is mainly made up of automatic collecting device, wireless data transmission system and intelligent data analysis software, and it realizes the automatic collecting for frozen soil and dry soil data, remote wireless transmission, real-time analysis, automatic monitoring and decision support. By these rich and practical functions, business service personnel can quickly analyze the variation trend of frozen soil and dry soil in the local area, and provide technology support for decision-making service of government based on the real-timely collected frozen soil and dry soil data.
Calculation and Fitting Methods of Variogram
Authors: Liu Huan Rong , Yan Yong Feng , Yang Hai Tao , Duan Li Yan
Published: September 2013

Calculation and fitting of variogram is a very important problem in the study of geostatistics. With the need of practical application, variogarm with multiform definition has appeared. But, the study of variogram is mainly focus on the calculation and fitting of theoretical variogram, and less on the experimental variogram, more a lack of research on the automatic calculation. There is little research on experimental variogram. To strengthen the study of experimental variogram is the future trend of development.
Investigation of Surface Integrity in Path Controlled Grinding of Crankshaft Pin
Authors: Zhang Man Chao , Yao Zhen Qiang
Published: September 2013

This paper investigates the effects of path controlled grinding on the grinding performance of 40Cr using vitrified-bonded cubic boron nitride (CBN) abrasive at low revolution. The evaluation of surface roughness and surface residual stress are presented. Experiments were carried out for path controlled cylindrical grinder in a wide range of grinding conditions. It can be obtained that the variation is slight in agreement with the small difference about roughness. The wheel speed and depth of cut are two key parameters to the surface residual stresses, and work speed does not seem to influence the residual stresses in the test conditions. The high residual grinding stresses of pin bearing resulting from path controlled grinding are compressive type at the surface for all conditions.
Effects of Texture Density on Tribological Performance of Laser Peen Textured Surface
Authors: Li Kang Mei , Yao Zhen Qiang , Hu Yong Xiang
Published: September 2013

Surface texturing has been recognized as an effective means to improve the tribological performances of sliding surfaces. Different densities of micro dimples were fabricated on Oxygen-Free High Conductivity (OFHC) copper by laser peen texturing (LPT). The tribological characteristics of the samples were tested by surface-to-surface sliding contact experiments under constant sliding velocity and linearly increased normal load. The effects of texture density on the friction coefficient, failure time and load carrying capacity were investigated. It was found that in comparison with smooth surfaces, textured surfaces help to reduce the friction coefficient, prolong the failure time and improve the load carrying capacity. Results also suggested that there might exit an optimum texture density with which the surface exhibits better tribological behavior than those with higher and lower texture densities.
Synthesis of Peptide Lipid (N+C5Gly2C16)
Authors: Zhao Xiao Jing , Zhang Li Ying , Jim Li Ming , Fan Sheng Di
Published: September 2013

In the current paper, improvements were made to the synthesis of the peptide lipid N+C5Gly2C16 by recrystallization, which eliminated to need to use column chromatography for product purification in each step of the reaction. A simpler and more efficient synthesis process was obtained and every step of the reaction was improved. In particular steps 2 and 3 became closely associated, with the product of step 2 taken as the reactant of step 3 without purification to boost synthesis efficiency. A total synthesis ratio of 23% N+C5Gly2C16 was achieved from the synthesis.
Effect of Homogenization on Recrystallization of Twin Roll Cast AA3003 Alloy
Authors: Tu Yi You , Zhang De Zhong
Published: September 2013

The effect of homogenizations on the recrystallization microstructure of as-rolled twin roll cast AA3003 alloy were investigated using optical microscope, scanning electron microscopy and electric resistivity measurement. The results indicate that high temperature homogenization significantly decrease the supersaturation of Mn in the alloy, and both the volume fraction and the diameter of intermetallic particles increase as the homogenization temperatures. The shape of the recrystallized grains changes from pancake-like to equiaxed, as the annealing temperature increases above 520°C.
Influence of the Top Metal Electrode on P-V Hysteresis Loops Behavior of 1-μm Thick PZT Films Deposited on a Pt/TiN/Si Substrate Prepared by MOCVD
Authors: Masruroh  , Umeda Masaru , Toda Masayuki
Published: September 2013

The effect of various top electrodes (Au, Ag, Cu and Al) on the hysteresis loop behavior of 1-μm thick PZT has been investigated. The PZT films and PT bottom electrode were prepared by MOCVD, and various top electrodes were deposited by evaporation. Using an Ag and Cu top electrode, an improvement in the polarization hysteresis loops of PZT films was observed compared to the other electrodes (Au and Al). A well-saturated P-V hysteresis loop was obtained when Ag and Cu top electrodes were applied. By applying an Au electrode, a decrease in polarization was observed, and the Al top electrode produced P-V hysteresis loops with para-electric behavior. The improvement in the polarization hysteresis loops was affected by the electrical conductivity of the top metal electrode. Namely, a faster supply of compensation charges, which are required to bind polarization charges located near the interface in PZT films, was obtained as the conductivity of the top electrode increased. The electrical conductivity of the metals displayed the following trend: (Ag>Cu>Au>Al).
Research on Absorbing Property of Cement-Based Material Blending with Silica Fume and Culver Zed Fuel Ash
Authors: Zhang Yong , Wang Bo , Wang Xiao Hui
Published: September 2013

The absorbing performance have been tested and analyzed by taking cement as matrix, blending material silica fume and culver zed fuel ash for absorbing agent trial Sample, in the 8 ~ 18 GHz frequency band, the results indicate that silica fume and culver zed fly ash and composite cement which made of Absorbing material has good absorbing property. Blending material absorbing properties of cement-based materials, the impact must be considered together, not the more the better, when blending material exceeding a certain threshold, enhance its ability of wave-transparent enhance while absorbing property will be reduced Finally.
Electrical Characteristics of Pt Schottky Contact to Semipolar (11-22) n-GaN Depending on Si Doping Concentration
Authors: Jung Sung Min , Kim Kyoung Kook , Lee Sung Nam , Kim Hyun Soo
Published: September 2013

Electrical characteristics of Pt Schottky contact formed on semipolar (11-22) n-type GaN planes with different Si doping concentration were investigated. Large Si doping to semipolar (11-22) n-GaN led to improved electrical and structural properties, e.g., the Hall mobility (μ) was increased by 35 % and the full width at half maximum (FWHM) of X-ray rocking curves with X-ray incident beam direction of [-1-12 was decreased by 34 %. Thermionic field emission (TFE) theory applied to the forward current-voltage (I-V) curves of fabricated Pt Schottky diodes yielded the Schottky barrier height (ΦB) of 1.64 and 1.84 eV, the tunneling parameter (E00) of 44 and 65 meV, and the ideality factor (n) of 1.83 and 2.57 for the lowly doped and highly doped samples, respectively, indicating that the Si doping affected the carrier transport properties substantially associated with the change of surface states density.
Numerical Simulation of the Occlusal Contacts in Roots Restored with Complete Ceramic Materials
Authors: Porojan Liliana , Topală Florin , Porojan Sorin
Published: September 2013

Different high-strength, all-ceramic restorative systems are available for the restoration of endodontically treated roots. To date, many studies on fracture strength and fracture pattern have been conducted. Most of these studies focused on investigating stress distribution in the root dentin of abutment teeth restored with a post and core system. The objective of this study was to evaluate, by means of the finite element analysis, stresses induced in an endodontically treated maxillary central incisor that was restored with different all-ceramic systems during contacts with the antagonists. The first step of the study was to achieve 3D models in order to design and analyze teeth, all ceramic post and core systems and pressed ceramic crowns. Stress analysis was performed on the restored incisor during protrusion. As post and core materials pressed ceramics and zirconia were chosen, and for the full crown pressed ceramics was selected. Maximal equivalent stresses were recorded in the tooth structures and in the restorations for all contact areas. In the zirconia post and core systems stresses were higher than in the pressed ceramics post and core systems. The use of zirconia posts with a higher modulus of elasticity than pressed ceramics induce lower stresses in the dentin and higher in the crown than pressed ceramics posts.
Effect of Ferrule Designs on Stresses of Endodontically Treated Teeth Restored with Pressed Ceramics
Authors: Porojan Liliana , Topală Florin , Porojan Sorin
Published: September 2013

Due to substantial loss of coronal tooth structure, corono-radicular stabilization is often required, especially in anterior teeth to provide retention and resistance form for the restoration. The use of ferrule as a part of the artificial crown was proposed in reinforcing the root-filled teeth. The purpose of this study was to investigate the effect of the ferrule height on stresses induced in an endodontically treated maxillary central incisor, which was restored with pressed ceramics, using numerical analysis. The study was developed for in order to obtain 3D models, for the design of the prepared teeth, pressed ceramics post and core systems and crowns. The use of ferrule as a part of the core was proposed in reinforcing and therefore six levels of the ferrule height were designed in order to be investigated. The study was performed on a central upper incisor, using a finite element analysis. Von Mises equivalent stresses were calculated and their distribution was plotted graphically. Regarding stress distribution in the crown high stresses are present cervical. In the prepared root stresses are under the finishing line and in the post cervical. In the post, with the increase of the ferrule height, the stresses move in coronal direction. No significant differences were found between the maximal stress values for the studied preparation designs (a ferrule height between 1 and 6mm).
The Flow Characteristics of Nanometer Microspheres in the Vessel
Authors: Yang Yong Bo , Qiao Li Min , Gu Rui , Liu Xue Shan , Zhou Guang Sen
Published: September 2013

The application of the nanoparticle technology is more and more popular currently. For the excellent abilities, nanoparticle technology is widely used in the biotechnology research. Nanometer microspheres can be used as a drug carrier. But the blood viscosity has relatively greater influence on its flow performance. The flow characteristics of nanometer microspheres in the vessel is very important to the curative effect. In order to resolve this problem, a length of vessel is introduced. By the CFD(computational fluid dynamics) software, the diffusion flow phenomenon is studied. The computational result and the analysis show that the nanometer microspheres would mix rapidly around the corner of the vessel. The results may provide technical reference of the further research.
Control Strategy of Restraining Elastic Vibration of Flexible Manipulator Arm Based on Increasing Axial Tensile Force and Structure Damp
Authors: Liu Guang Rui , Wang Xian , Wu Wen Jing
Published: September 2013

the elastic vibration control method of actively changing parameters of flexible manipulator arm which includes actively changing rigidity and damping is put forward in this paper . these two control methods which are the control method of actively changing rigidity through increasing axial tensile force and the control method of actively changing damping by increasing structural damping are analyzed , and the corresponding mechanical structure and drive control method are designed . Simulation calculation indicates the effectiveness of the control method.
3D Quasi-Dynamic Load Contact Analysis of Conjugate Spur Gear
Authors: Wu James Shih Shyn , Hsu Po Jung , Hung Jui Pin , Lai Yuan Lung
Published: September 2013

In order to provide a profitable and cost-effective way in maintaining a machine, it is necessary to prepare an economical way to provide service manipulation is to prepare standard and stable spare parts, replacements, and consumables in stock. The problem of accurate prediction of load, deformation and stresses in 3D contacts is then revisited. Most research has used one, two or three pairs of meshing teeth to simulate the mating process. It is insufficient to describe the entire process of three contact zones during each mating pair. By implementing a combined 3D face-contact and FEM, contact stress analysis between two spur gear teeth was considered in eleven different contact positions during a full mating process. The proposed approach provides a complete and effective solution of the contact problem in quasi-dynamic way. Instead of applying more fixed boundary conditions to constrain and simplify material behavior in 2D models, point and line contact of tooth surfaces are substituted by a face contact model of teeth in this article.
Vehicle Dynamics Model Establishing and Dynamic Characteristic Simulation
Authors: Wang Rui , Zhang Hao , Li Xian Sheng , Zheng Xue Lian , Ren Yuan Yuan
Published: September 2013

By establishing bus simplify coordinate system model and equivalent mechanical model, inertial forces and external forces are analyzed through vehicle lateral movement and vehicle's yaw motion and roll motion. Three degrees of freedom linear motion equation of vehicle is established taking into account lateral motion, yawing movement and rolling motion of vehicle and it can be solved by using method of state space equation. Vehicle dynamic characteristics are analyzed by using this method and programming with Matlab. Vehicle in steering wheel angle step response is analyzed under the conditions of different tire wheel cornering stiffness, moment of inertia, height of center of mass. The results show that increasing rear wheel cornering stiffness, reducing front wheel cornering stiffness and center of mass height, which can effectively improve stability of vehicle. Simulation results provide a theoretical basis and reference for the selection and design of vehicle.
Equal Life Optimization of Shells Based on Kiln Axis Alignment
Authors: Yang Xiao Yan , Xiao You Gang , Lei Xian Ming
Published: September 2013

The crack of kiln shells was seen regularly due to axis deflection and asymmetric load distribution. It will be helpful to improve kiln performance if the remaining life of kiln shells can be kept the same. For this the formulae of stress spectrum and fatigue life of kiln shells are obtained. Taking the aligned values of axis deflections as design variables, equal fatigue life of shells and maximum axis deflection as the objective function, considering the fuzzy factors during axis alignment, the fuzzy optimization model of kiln axis alignment is set up. The results indicate that kiln axis can be aligned as direct as possible, and life expectancy of kiln shells can be optimized to keep near the same. Accordingly, the valuable production time of kiln can be increased greatly by such aligned method.
Numerical Simulation of Low Mach Number Steady and Unsteady Flow Past a Circular Cylinder with Preconditioning Method
Authors: Cao Ning , Liu Yao Feng , Luo Shi Jie
Published: September 2013

Preconditioning techniques have become established as a useful technique for optimizing accuracy and efficiency of CFD solutions over a range of flow conditions. Specifically, at low Mach numbers, it is well known that the standard physical time derivatives lead to an ill-conditioned system due to the stiffness between the acoustic and particle wave speeds, which in turn results in degraded convergence and inaccurate discretization. With preconditioning, the pseudo-time derivatives scale the acoustic speeds so that they remain well conditioned at all Mach numbers. A low-diffusion preconditioning Roe scheme by using an adjustable parameter in preconditioning Roe scheme to control the numerical dissipation and the adjustable parameter value rules are proposed. Numerical results show the efficiency of the new scheme and the low Mach/Reynolds number steady and unsteady solutions of viscous flow past a circular cylinder are satisfied.
Study on Transverse Baffle Design Parameters on Influence of Baffle Anti-Sloshing Effect by FLUENT Simulation
Authors: Zheng Xue Lian , Li Xian Sheng , Liu Hong Fei , Wang Yu Ning , Yang Meng
Published: September 2013

Longitudinal liquid sloshing in partially-filled tankers has great influence on vehicle braking performance, which results in serious tanker crash accidents. To investigate the influence of shape and location of holes that pierced on the baffle on reducing liquid sloshing and on the force analysis of baffles. Three different shapes of holes are designed and each hole has two assemble position on the baffle. FLUENT is used to simulate liquid sloshing in partially - filled tanks that equipped with different kinds of baffles which subjected to constant braking deceleration. Time-series analysis of forces on tank walls and baffles are carried out considering structural damage both the tank head and the baffles. It is drawn that the shape of manhole has great influence on baffle anti-sloshing effect and the position of manhole has giant impact on baffle force analysis.
Research Pressure Loss Based on Gas Liquid Two Phrase Flow Experiment System
Authors: Zhang Yao , Zhang Wan Ling
Published: September 2013

This paper discussed the pressure drop about the friction pressure drop and gravity pressure drop in the pipe. Represent the model of pressure drop. Calculate the pressure drop in the experiment system. Flow pattern and pressure drop has the directly relationship. And the friction pressure drop is the main factor of influences internal fluid mechanism. Pressure drop is basic of research the water rate and dynamics fluid.
CFD Simulation of Insulation Performance of Air Curtain Used in the Cold Store
Authors: Miao Chen , Xie Jing , Gao Zhi Li , Du Zi Zhen , Zhu Jin Lin
Published: September 2013

In order to realize the optimization of insulation performance of air curtain used in the cold store. The unsteady state simulation of the flow field of air curtain used in the cold store was studied by the CFD software to predict variation of the flow field in the cold store after door and air curtain were opened and the time of the flow field of the cold store arriving to be uniform. The experimental verification was also taken. The simulation results reflected that the temperature of the upper area closing to the door increased first and then decreased, then increased. The intrusive hot air destroyed the original uniform air flow distribution and caused the formation of the swirling eddy. When the whole flow field of the cold store was uniform, the swirling eddy disappeared. The re-circulation moved forward the lower left side of the cold store, which was caused by the intrusive hot air. Local mesh refinement could improve the simulation accuracy and be useful to analyse the flow characteristic of the air curtain. The times of the flow field in the cold store arriving to be uniform predicted by the numerical simulation and experiment after door and air curtain being opened were 5 min and 6 min, respectively. This study will provide useful references for optimization of insulation performance of air curtain.
Effect of Water with Anti-Freezing Material Based Cooling for Split Air Conditioning System
Authors: Balaji N. , Mohan Kumar P. Suresh
Published: September 2013

In conventional air-conditioning system, fresh air volume is always restricted to save energy, which Sacrifices indoor air quality to some level. However, removing the latent load of air by liquid Desiccant rather than by cooling is an alternative way of reducing energy consumption. Most of the research works on energy saving methods for air conditioning have focused on large chillers. Hence, this research work discusses energy conservation in a split air conditioning system, with a helical type intercooler that acts as a heat exchanger. The inter cooler used as a coolant like mixture of water and anti-freezing materials like ethylene glycol with different ratio. In this paper the ethylene glycol mixed with water in different ratio of 10:90, 20:80, 30:70, 40:60, and 50:50.Compare all the ratios optimum value 30:70 has been found. In this ratio the time taken for required cooling temperature from 28°C to 18°C was achieved by 1380 seconds. It is evident that the time taken for cooling by the modified system is 48.31% less than that of the existing split air conditioning system and also indirectly reduces global warming.
Diagnostic Methods Assigned for Monitoring the Operating Fault State of Production Equipments
Authors: Šoltésová Stanislava , Baron Petr
Published: September 2013

Technical diagnostics that is currently the most important factor of reliability deals with the forms of speech disorders, process, detection and operation principle. As a tool, it ́s very important for the operation and maintaince of production equipments. It detects safety and reliability of economic efficiency, it optimizes costs for the continuity of production and quality of the final products. There is recorded great interest for it not only in the scientific sphere, but also in the application sphere of its results in the newly developed methods and their application in the professional practice. This article describes the use of tools of technical diagnostics in the workplaces to monitor the behaviour of production equipments.
Super-Resolution Imaging in a Close-Packed Synthetic Aperture Digital Holographic Microscopy
Authors: Tu Han Yen , Lee Yueh Long , Cheng Chau Jern
Published: September 2013

This work presents a close-packed synthetic aperture method for superresolution imaging in digital holographic microscopy. The superresolution imaging technique is based on beam-rotation approach to collect the different bandpass spectrum of the sample. The close-packed information from synthetic aperture process can be used to enhance the reconstructed imaging resolution under low-numerical-aperture microscope objective. Simulated and experimental results show the characteristics of the close-packed synthetic aperture and the influence on superresolution imaging.
Key-Frame Extraction Method from Single-Lens Undersea Video Sequences
Authors: Li Xiu , Gao Fu Xin , Yan Tian Xiang , Wang Dong Zhi , Chen Lian Sheng , Guo Zhen Hua
Published: September 2013

The process of key-frame extraction of the undersea video is different from that on the land. The effective key-frame extraction will promote research and retrieval of underwater video. In this paper, we first introduced the characteristics of the undersea video, and then proposed a new key-frame extraction method based on Sensitive Curve brightness change for single-lens undersea video sequences which measures the light shot boundary brightness change. The experiment results show that the proposed algorithm can extract key information of the undersea video quickly, and have a good performance for the noise point.
The Nonparametric Confidence Interval for the Process Capability Index C*pmk
Authors: Wu Shu Fei
Published: September 2013

The process capability index which is a generalization of is defined by the use of the idea of Chan et al. [ for asymmetric tolerance. In this paper, we proposed a Jackknife confidence interval for and compare its coverage probability with the other three Efron and Tibshiranis [ bootstrap interval estimate techniques. The simulation results show that the Jackknife method has higher chance of reaching the nominal confidence coefficient for all cases considered in this paper. Therefore this method is recommended for used. One numerical example to demonstrate the construction of confidence interval for the process capability index is also given in this paper.
Testing and Analysis of Several Global Optimization Algorithms
Authors: Zhang Yan , Xie Ji Long
Published: September 2013

Global optimization algorithms have strong adaptability become a major research direction. Three global optimization algorithms which are Multi-Island Genetic Algorithm (MIGA), Adaptive simulated annealing (ASA) and Evolutionary Algorithms (EVOL) are adopted as the optimization policy. Tested with Zakharov function and Rastrigin function to analyze the performance of the global optimization algorithms.According to the results, it can be concluded that one should choose corresponding optimization methods for optimal calculation with specific issues, so that it can obtain the best optimal solution.
The Preliminary Study of Wall Climbing Firefighting Rescue Robot for High-Rise and Super High-Rise Building
Authors: Li Bin , Jin Jiu Fu , Gu Sheng Qing , Lu Ling , Xu Li Ze
Published: September 2013

According to the present situation of domestic and foreign firefighting rescue equipment for high-rise building and from the actual needs of the high-rise building firefighting, this paper brief analysis the current development of domestic and international firefighting rescue equipments problems and the trend of firefighting rescue robot. Combined with the special conditions of high-rise and super high-rise building fire scene, this paper introduces a breaking-window wall climbing firefighting rescue robot for high-rise and super high-rise, and introduces the operation mechanism of each part and the structure and the work principle of the main functional components.
Automatic Current Sharing Technology in the DCS Power System Applications Research
Authors: Fu Jun Fang , Wang Zhong , Duan Xing Tai , Li Xin Nian , Xie Guo Feng
Published: September 2013

This paper on the theory of fuzzy control in the automatic current sharing technology launched a study.Through two PH600S280 - 48 power modules in parallel power supply system, analysis to verify the control effect of automatic current sharing technology in the DCS power system.The control mode of simple structure, easy to expand, wide range of output voltage regulation and current sharing is good.It is an ideal and reliable load-sharing current control system for power supply modules in parallel power supply system.
Research on Searching Guidance of TV Guided Missile
Authors: Wang Hao Peng , Liu Ze Qian
Published: September 2013

The searching phase of TV guided missile is usually divided into three different stages as the navigation, homing and terminal guidance. In this paper, guidance laws in different phases are analyzed. To solve the problem of target acquisition, signal following and navigation precision during the period of navigation, methods of integrated guidance with three geostationary satellites orientation and INS in high dynamic circumstances are put forward. The mathematics models of pre - guiding and searching are established corresponding to the traits of smaller TV seeker instantaneous field, limited shooter reacting velocity, low hunting speed and narrow searching area. The compound guidance methods which integrate the tracking and the proportional in terminal phase are raised in order to increase the guiding precision and to decrease the undershoot value. Experiment shows that the guiding precision is raised by a long way.CLC number: TJ765.4+3 Document Code: B
Two-Tone Colored Petri Net and its Application in PLC
Authors: Yang Jian Hua
Published: September 2013

2-tone colored Petri net, where one color of tokens stands for logical value true and the other color of tokens for logical value false, is proposed to solve problem of inconsistency between programmable logic control. Symmetry 2-tone colored Petri net is also developed to keep the dynamic behavior in accordance with that of the original Petri net so that invariant method can be employed to analyze properties of nets. Some theorems are given to judge circular control based on reachable tree and T-invariants, and the algorithm for obtaining all minimal T-invariants of symmetry 2-tone colored Petri net is given. Finally, detecting possible dead-loop in symmetry 2-tone colored Petri net is also discussed.
Task-Oriented Servo Loops Control of a 6-DOF Manipulator for Rescue Robot
Authors: Su Wei Hua , Ren Xu Dong , Zhang Wen Chang , Niu Fu
Published: September 2013

The thesis research aimed to develop a novel approach to model and control a 6-DOF manipulator for specific tasks. The modeling and control method take into account velocity of the dynamical model. The camera and acquisition system were developed in order to significantly increase the bandwidth of the manipulator. Multi-Input and Multi-Output (MIMO) is used to optimally control the visual loop with respect to the proposed dynamical model. Experimental results on a 6-DOF manipulator for rescue robot are presented that validate the proposed model. Furthermore, a precise synchronization method is used to reduce the delays of image transfer and processing. The experiment results show a biggish improvement of the loop performance with respect to more classical control methods for 6-DOF manipulator.
Design and Implementation of Control System in Warm Extrusion Forming Process Manipulator for Steel Connecting Sleeve
Authors: Zhang Xin Ju , Ma Xiu Hong , Zhang Fu Xiang , Cao Hui Qin
Published: September 2013

There are three work posts in this warm extruder: upsetting station backward extrusion station and blanking station. They work continuously. The manipulator is mainly used to passing artifacts from one station to another. The warm extrusion forming process manipulator for steel connecting sleeve typically was designed to reduce labor intensity and enhance production automation level. The machines structure and working principle were described. In the same time, the machine control system that adopts the PLC programmable controller can simplify the control system, and its reliability strengthens further. Practices show that the strapping machine has the advantages of simple structure, high efficiency, low cost and small vibrating noise.
Piezoelectric Bulk Material for the Fabrication of Membrane Actuators Using Surface Electrodes for Actuation
Authors: Zaehringer Sandy , Spornraft Maximilian , Schwesinger Norbert
Published: September 2013

Using piezoelectric bulk material for manufacturing membrane actuators offers several advantages. Instead of manufacturing e.g. a silicon membrane and then either depositing a piezoelectric thinfilm actuator or mounting a piezo disc or stack to the silicon membrane, it is possible to use the piezoelectric material itself as membrane. Circular lead zirconate titanate (PZT) discs were adapted to silicon surface micromachining technologies. By depositing interdigitated electrode layouts several actuators were structured on one substrate. Those inderdigitated electrode layouts, when actuated, cause an inhomogeneous electric field distribution and thus cause an inhomogeneous mechanical stress distribution within the PZT-substrate. This forces the PZT to deflect in those actuated areas, without the usually needed passive membrane.
Intelligent Remote Medical Care System by Use of a Multiple of Network Protocol Integration
Authors: Lian Kuang Yow , Hsiao Sung Jung , Sung Wen Tsai
Published: September 2013

Remote medical care system is a challenge to overcome time and space. In this study, the key is to how to correct the measurement signal is sent to a remote medical center, to allow doctors to carry out an initial diagnosis, and track the history of the disease. The proposed remote system is built on the integration of ecological multiple network protocols. These integrated network protocols, including TCP / IP, ZigBee, of RFID, and Bluetooth signals. This thesis is to use the Arduino hardware in the Mega 2560 as the integrated controller. Through the program drive the TX and RX coding, this study proposes a very efficient way to complete a multi-protocol integration of intelligent control. Finally, the simulation of remote medical devices to measure a patient's physical condition, including ECG, blood oxygen concentration, blood pressure and respiratory rate, and through Wi-Fi network traffic control, do the use of an integrated, intelligent home appliances and ZigBee.
An Improved Two-Sided Assembly Line Balancing Algorithm Based on Heuristic Rules
Authors: Gao Yan , Chang Tian Xiang , Wang Yang Yang , Liu Yao , Quan Hong Yan , Xu Jian Zhong
Published: September 2013

According to Assemble line balancing (ALB) problem which is widespread in manufacture, we establish a mathematical model and present our improved algorithm that is based on Heuristic rules, which adopt cumulative ranked positional weight as a basis of task assignments and schedule the orders of branches traversal. After that we can find an optimal solution to the balancing problem efficiently. The result of examples given by this paper shows our algorithm has a good performance.
Special Software Development for Tire Vulcanization Simulation
Authors: Zhang Jian , Wei You Su , Wang Guo Lin , Tang Wen Xian
Published: September 2013

Special software for tire vulcanization simulation was developed using ABAQUS software as the core solver and Visual Basic6.0 as the develop language. The software was based on principles of easy operation, professional and intelligent analysis. In this way, automation and professionalization of the analysis process were performed. The special software mainly consists of three functions: Firstly, model grid was automatically recognized, and corresponding configuration files were automatically built, which were required in the analysis preprocess. Secondly, ABAQUS solver was invoked to solve the model. Finally, results such as state-of-cure, temperature and other curing performances were automatically extracted and saved as excel or word format. Besides, the curing profiles could be proposed. The results showed that this software is easy to use and work efficiently.
The Analysis and Forecast about the Supply and Demand of China's Rubber Raw Materials Based on Grey Model
Authors: Wang Zhao Jun , Lin Zhou , Liu Shuai
Published: September 2013

The rubber industry is an important sector in the national economy. The article took the natural rubber and synthetic rubber as the main studying objects to analyze and forecast the amount of supply and demand of Chinas rubber raw materials. Analyzed the status of supply and demand of Chinas rubber raw materials from 2006 to 2011, and established the Grey Forecasting Model to forecast the supply and demand from 2012 to 2017 in China, and concluded that the prosperous supply and demand of rubber raw materials would be continued in the future.
Changes in Mechanical Properties of Cast Iron GTW 35-04 under the Surface Parameter during Drilling
Authors: Jurko Jozef
Published: September 2013

The problem of drilling holes with diameter D=2 to 8 mm resides in the fact that 35 to 40% of these holes do not comply with prescribed requested requirements. This study also includes an analysis of accompanying phenomena in the cutting zone by measuring some selected parameters. The basic hypothesis of this article focuses on the study changes in mechanical properties of cast iron GTW 35-04 under surface finish when drilling. The problem of drilling holes with diameter D=2 to 8 mm resides in the fact that 20 to 25% of these holes do not comply with prescribed requested requirements, [, [. This article presents the results of experiments focusing on the study of the damage process in helical drills with diameter d=5.5 mm when drilling into cast iron GTW 35-04. This study also includes an analysis of accompanying phenomena in the cutting zone by measuring some selected parameters. Experimental results were verified in the production of holes in products for the computers.
Tensioned Fabric Structures in Oval Form
Authors: Yee Hooi Min , Kim Jae Yeol , Mohd Noor Mohd Syazwan
Published: September 2013

Form-finding of fabric surface bordered by Oval has been investigated. In this study, the possibility of adopting the form of Oval as surface shape for tensioned fabric structure has been studied. The combination of shape and internal forces for the purpose of stiffness and strength is an important feature of fabric surface. For this purpose, form-finding needs to be carried out. Nonlinear analysis method has been used for form-finding analysis of the fabric in the form of Oval.
Deflection Analysis of Anchored Retaining Wall in Dune Sand
Authors: Costa Yuri Daniel Jatoba , Gurgel John , Costa Carina  Maia Lins , Santos Olavo Francisco
Published: September 2013

This paper investigates the behavior of a 15-m high multi-anchored bored pile wall built in a dune sand overlying a naturally occurring lateritic soil layer. A parametric study using the finite element method was carried out to model wall deflections and ground movements during construction phases. Deflection results from the numerical simulations were compared to data collected in the field. The maximum horizontal wall deflection shows a non-linear decreasing trend with increasing system stiffness. Embedment length was found to play a secondary role on wall deflections. Predicted horizontal wall deflections after preloading of second and third anchor layers were on average 30% smaller than the corresponding field values.
Crack Identification in Plates Using Fractal Dimension Analysis
Authors: Bai Run Bo , Xu Zong Mei , Qiu Xiu Mei
Published: September 2013

Focusing on the damage detection using the fractal dimension analysis in plates, this study begins by giving a fractal dimension scanning method for beams. Then extend the algorithm to the plates by degrading the plate mode shape into transverse and longitudinal directions. With the affine transformation, the proposed method overcomes the incapability of identifying damage when using the higher-order mode shapes of the existing fractal dimension methods. Numerical results show that different types of cracks, crack locations and lengths can be detected using this method.