bluuebunny/crossref_metadata_2025 huggingface dataset:
Wisdom Bank System
Authors: Chen X.L. , Zhang H.C. , Guo L.Y. , Cong B.
Published: September 2013

This paper puts forward the bank wisdom concept, sums up the key of wisdom bank, wisdom of building "one-stop" service system, bank performance prediction, the wisdom of building innovative development system, the wisdom of construction risk management system, etc.
Estimating the Portfolio Risk with Copula-GARCH-EVT Method: Empirical Study of Carbon Market
Authors: Li Ting , Zhang Zhi Gang , Zhao Lu Tao
Published: September 2013

With the rapid growth of the carbon market, carbon price fluctuations are increasingly important for market participants. Carbon market risk directly affects the investor confidence and emission reduction results. In this paper we use Copula-GARCH-EVT model to calculate the Value-at-Risk of carbon futures via Monte Carlo method and demonstrate that GARCH-EVT model is the proper marginal distribution, it has higher accuracy than other marginal distribution models. The method of Copula is better than the traditional covariance metric method.
Evaluation Method of Talents Comprehensive Skills on Japan-Oriented Software Outsourcing
Authors: Chen Xiao Ji , Liu Jing Zhong , Peng Xia
Published: September 2013

With the rapid development of Japan-oriented software outsourcing, the demand for talent of computer science is increasing, reasonably making evaluation of talents comprehensive skills on Japan-oriented software outsourcing is important. This paper use fuzzy comprehensive evaluation method to research. First, show the evaluation index system and the weight of references; Then, the establish mathematical models of fuzzy evaluation, including single indicators of fuzzy evaluation and fuzzy comprehensive evaluation; The results of this research have the following characteristics, comprehensive consider various factors, objectively reflect the actual situation, simply use, evaluate accurately and reasonably, and in actual application, people should use evaluation method flexibly.
Research in Assessment Index System of Automotive Eco-Design
Authors: Zheng Ji Hu , Zhang Peng , Wang Wei
Published: September 2013

Firstly, the process of establishing automotive ecology related systems and the necessity of automotive eco-design assessment to carry out were introduced. The overall objective of automotive eco-design assessment about China was described. And then, automotive eco-design assessment system of China was established by screening the most vulnerable index of energy-saving, environmental protection and health impact in all automotive life cycle stages by the approaches of desk information research, business investigation visit and industry expert consultation. Finally, a wide range of automotive eco-design assessment strategy model was proposed.
Supplier Diversification under Inventory Holding Cost Increase and Binomial Yields
Authors: Wu Jin Qi , Huang Xiao Lan
Published: September 2013

We consider supplier diversification with holding cost increasing based on binomial yields. We also show that the optimal solution always with a single supplier in the holding cost increasing binomial yields systems, and give the optimal solution.
A Simple Analysis of Applying and Meaning of Estimate of the Urban Living Environment
Authors: Geng Yan
Published: September 2013

Environmental quality evaluation contains some procedures such as determination of environmental evaluation factors, Environmental monitoring, evaluation of the standard, approach of the evaluation, identification of environment and so on. With the development of the society, the living standard of the people has improved, and the better living condition and living environment has been put forward. It has boosted the living environment of the residents to get to humanization. Theoretical basis and scientific foundation have provided for the environment evaluation of the living environment. Therefore, it is very necessary and urgent for the applying and meaning of the living environment. This paper has a goal to test and verify the estate in Anhui based on studying the environment evaluation, for building the environmental estate lay the foundation.
Design of Equipment Management System Based on ERP
Authors: Li Chun Jie , Li Hong Bo , Wang Rui , Guo Ji Ping
Published: September 2013

A secure and stable equipment management system is very important to an enterprise, the use of advanced technology in equipment management system, now the popular application of advanced distributed database operation mode, make the equipment management information system has strong practicability and high reliability. The equipment management work requirements, procurement plan, use, repair, and scrap the whole process of information recording, tracking, monitoring, both capital plan, which is the organic combination of physical and financial, and provides users with detailed and accurate information and convenient management means.
A Hybrid Knowledge-Base System Approach for Disaster Emergency and Relief Decision
Authors: Jiang Qing , Hu Hai Ying , Jia Xiu Fang , Lu Cui Ping , Wang Ru Jing
Published: September 2013

Hybrid knowledge representation schemes, including production rules, object-oriented programming, and procedural methods, are employed to express expert heuristics and standard emergency knowledge during the development of the knowledge-based system (KBS) for emergency decision for disaster reduction. This approach renders it possible to take advantages of the characteristics of each method. The system can provide the user with advice on Preliminary plan evaluation, Plan optimization, Plan evaluation ,Plan summary and Miscellaneous.
Research Progress of Flotation Collector in Hematite Flotation
Authors: Wang Wei Zhi , Lei Meng Qing , Yang Chun Guang
Published: September 2013

The article based on several iron ore flotation processes at home and abroad described the collectors at home and abroad development as the flotation process of constantly improving. For different stages of development the article also introducted representative collectors which some iron ore beneficiation plant use briefly, and then explained the details of domestic current high quality collectors. Finally the article prospected the development trend of domestic collectors.
Morphology and Crystallization Behavior of Toughened Poly(Trimethylene Terephthalate) Blends with Acrylonitrile-Butadiene-Styrene
Authors: Wang Kun Yan
Published: September 2013

Poly (trimethylene terephthalate) (PTT)/acrylonitrile-butadiene-styrene (ABS) blends have been prepared in composition with various ratios using the twin screw extruder approach. Their morphologies and crystallization behavior were investigated. Typical sea-island morphologies were observed by scanning electron microscopy. The partical size of ABS increased as the content of ABS increasing. Differential scanning colorimetry (DSC) experiments showed that the melting point of pure PTT and their blends was almost constant. The presence of the ABS increased the crystallinity of the matrix in PTT/ABS blends with ABS content less than 30wt%.
Effect of Organoclay on Thermal Degradation and Crystalline Morphology Properties of Biodegradable PHBV
Authors: Wang Kun Yan , Cao Feng
Published: September 2013

Poly (3-hydroxybutyrate-co-3-hydroxyvalerate)/organoclay blends were prepared by solution blend method. The effect of organoclay on the thermal degradation and crystalline morphology properties were studied by thermogravimetry (TG)X-ray diffraction (XRD) and polarizing optical microscopy (POM) analyses. TG results indicates better processability of the blends with 5wt% organoclay than that of pure PHBV. XRD results show that the organoclay does not modify the crystal structure in the blends but only increase the intensity of diffraction peak. PHBV and PHBV/organoclay revealed integrated Maltese crossed spherulitic morphologies. While small-sized PHBV spherulites were formed when organoclay added to PHBV.
Performance Evaluation of S/P System and its Mechanism Analysis
Authors: Niu Li Wei , Lu Xiang Guo , Zhang Hai Hong , Zhong Li Xin
Published: September 2013

Xinbei Oilfield in Jilin is a tectonic lithology reservoir with high porosity, high permeability, thin oil layers and severe heterogeneity, which has entered a period of high water-cut development. Aiming at actual demand of field development, making use of indoor apparatus monitoring and theoretical analysis method, the author evaluated the viscosity, interfacial tension, absorption characteristics, rheological property, viscoelasticity and displacement efficiency of 5 different binary composite systems composed of surfactants and polymer to optimize the binary flooding system. The results show that Daqing Lianhua/Polymer system can achieve ultra-low interfacial tension with crude oil with small absorption, well stability and little effect on viscoelasticity of polymer solution. The system has higher displacement efficiency and stronger mobility control ability, which is recommend as flooding system for oilfield.
Mathematical Modeling of Chromium(Ш) Extraction by Emulsion Liquid Membrane
Authors: Xie Yao Zhong , Fei De Jun , Dang Ya Gu , Wu Jian Xun
Published: September 2013

Advancing front model, carrier-facilitated transfer model and reversible reaction model were applied to simulate extracting chromium (Ш) from wastewater by emulsion liquid membrane using di-(2-ethylhexyl) phosphoric acid as carrier and Span-80 as surfactant. Parameters of the mathematic models were gained from the designed experiments, and the reversible reaction model can be used with a reasonably accuracy as estimates of chromium (Ш) permeation. The experimental results demonstrate that the role of reversibility of the chemical reaction between internal phase and membrane phase should be considered, and the diffusion resistance is the primary resistance of the mass transfer process.
Preparation and Application of a Leather Finish with Core-Shell Structure
Authors: Zhao Xin , Zhao Yan Song
Published: September 2013

The core-shell acrylic resin emulsion is prepared by seed polymerization technology, with styrene, methyl methacrylate, acrylonitrile as monomer, butyl acrylate, methyl methacrylate, acrylic acid as shell monomer, and the of nanoTiO2 is introducted in shell emulsion. Infrared spectroscopy were used to characterize the structure of the prepared coating agent. The preparation of TiO2/acrylic resin emulsion for leather finishing agent, and discusses its influence on the leather properties. The results show that the synthetic finishing agents for dyeing after the fatliquoring leather finishing, good finishing effect can be obtained.
Fuzzy Comprehensive Evaluation for Dampers of Inclined Cables
Authors: Xue Xiao Feng , Xue Xiao Jie , Li Yang , Wu Xian Hui
Published: September 2013

Installing, seismic affections cost and complexity of maintenance are different due to the different mechanical of dampers. With the data collected from experts, this paper calculates the weight of indexes by the method of Delphi firstly, and then evaluates dampers of cables by fuzzy comprehensive method. Conclusions are drawn as follows :(1) Reliability is the most important factor to evaluates dampers;(2) Oil damper and MR damper are weak in reliability, economics and complexity of maintenance compare with other dampers;(3) High damping rubber, viscous damper and friction damper lead the top three of all the dampers. Meaningful references are provided for engineers to select dampers for cables according the character of cable stayed bridges.
Analysis on the Capacity of Old Highway Bridge
Authors: Yang Ya Xun , Wang Wei Shan , Qiao Chao
Published: September 2013

Most bridges show different degrees of disease in the operations many years later. Combing the bridge disease investigation, materials inspection and load test done on the background of the interchanges over Yicheng-Houma expressway, this paper will make assessment of the frequently-used box-girder bridges' bearing capacity in the expressway to provide a reference for bearing capacity assessment of the old expressway bridges.
Effect of Welding Methods on Microstructure of Joint for 16MnR and 2205DSS
Authors: Yang Li , Zhang Ning , Ge Jing Guo , Ji Nan , Li Meng
Published: September 2013

Two kinds of welding methods, including SMAW and GTAW, were employed to connect 16MnR steel and 2205 steel. OM and TEM was used to observe the microstructure. EDX line scan was used to analyze elements in special areas of the joint. The results show that the degree of carbon migration in the side of 16MnR of the seam welded by GTAW is larger than that by SMAW. Particle and chain-island are two main form of Fe3C in micro-area of carbon migration. The grain size of seam material in GTAW section is larger than that of SMAW and the content of austenitic of seam material in GTAW section is more than that of SMAW. The tongues in the side of 16MnR appear in both two seams welded by SMAW and GTAW and they are parts from base metal.
Research on Springback Compensation of Aluminium Alloy Automobile Body Panel
Authors: Hu Lei , Xie Hui , Hu Xing Xing , Pan Zhi Hong , Jiang Hao Ming , Wu Lei
Published: September 2013

The performance of the aluminum alloy makes it the most popular lightweight materials for the automobile manufacturers. However, due to the disparity on the crystal structure,it has the higher springback values compared with steel. In order to solve the problem, we put forward a new springback compensation method based on displacement compensation principle and the principle of curved surface fairing design methods. Though full cycle simulation and calculate springback value for each working procedure, then generate the springback compensation surface. The methods practical application effect is good.
Anticorrosion Property Study on the Hard Chrome Plating Layer of Hydraulic Cylinder Rod
Authors: Zhang Ning , Huang Chuan Hui , Zhang Chun Hong , Shi Na
Published: September 2013

The hydraulic cylinder is the essential component in the construction machinery, and the quality and safety of construction machinery products depends on its performance. As the main part of the hydraulic cylinder rod, the quality and reliability are the key indicators of the hydraulic cylinder. In this paper, the hard chrome plating layer of hydraulic cylinder rod was tested by metallographic analysis, surface morphology observation, hardness test, corrosion resistance experiment, in order to evaluate the anticorrosion, economy and technology of the electroplating technology, and discuss the anticorrosion mechanism, so the experimental and theoretical basis will be provided in the field of production. The contribution will be made by improving the corrosion resistance and wear resistance, increasing the operational reliability, extendeding service life of the hydraulic cylinder rod.
Nano SiO2/Cellulose Composite Films Prepared via Ionic Liquids
Authors: Li Bing Jie , Wang Zhao Mei , Xiao Kai Jun , Liu Yang
Published: September 2013

nanoSiO2/cellulose composite films were prepared via ionic liquids 1-ethyl-3-methylimidazolium acetate (EMIMAc) solution containing cotton pulp cellulose. The as-prepared composite films were characterized by means of scanning electron microscope (SEM) and thermogravimetric analysis (TGA). It was indicated that the surface structure of obtained films was dense and compact, which was composed of nanoSiO2particles. The modified nanoSiO2composite film showed a good thermal stability with decomposition temperature up to 692°C when the weight residue of the film was 50%. The tensile strength and elongation at break increased by 50% and 35% than that of original cellulose film without SiO2. The film containing 0.5% SiO2showed a water flux of 249.8L.m2.h-1and the retention of BSA by 97%.
Modeling and Experimental Validation of Composite Stiffened Panels under Uniaxial Tension
Authors: Wang Hong Qing , Yan Qun , Xie Zong Hong , Sui Xiao Dong
Published: September 2013

A finite element model implemented with a progressive damage propagation mechanism was generated to study the mechanical behavior of stiffened composite panels under uniaxial tension. Typical damage modes including fiber breakage, matrix crushing and delamination were considered in the model. Failure criteria with corresponding stiffness degradation technologies was used to predict the initiation and evolution of intra-laminar damage modes by a user-defined subroutine. Cohesive elements with thickness of 0.01mm were defined along the interface areas between the filler and the adjacent laminate layers for predicting the initiation and propagation of delamination. Corresponding tests on composite stiffened panel with a web cut-out were conducted. A good correlation between the numerical results and test data was obtained, which validated the finite element models. Both the numerical and experimental results conclude that the delamination in the flange around the cut-out region is the most critical failure mode for the composite stiffened panel under the uniaxial tensile load.
Influence of Tempering Temperature on Microstructure and Mechanical Properties of 35CrMnSiMo Cast Steel
Authors: Li Hong Bo , Cheng Han Chi , Wang Jing , Li Chun Jie , Su Xing Jun
Published: September 2013

The tempering temperature on microstructure and mechanical properties of 35CrMnSiMo cast steel are studies in this article. Results showed that 880°C×30min 35CrMnSiMo cast steel after quenching water, hardness up to 49.6HRC, reached 39.04 J/cm2 toughness. Tempering temperature selected 200°C, 400°C and 600°C, respectively with the increase of the tempering temperature plummeting hardness and impact toughness are on the rise, but at 400°Cdecreased. Photos can be seen from your organization after quenching, which contains a lot of lath martensite, a small amount of lump some residual austenite and martensite, 200°C tempering martensite has been reduced, some of carbide precipitation into tempered martensite. Tempering of martensite quenching slats or flake, it is made of flake martensite and small ξ carbide distribution.
Effect of Tempering Temperature on Mechanical Properties of High Strength Wear Resistant Cast Steel
Authors: Li Hong Bo , Wang Jing , Cheng Han Chi , Li Chun Jie , Su Xing Jun
Published: September 2013

This paper mainly studied the high temperature quenching oil quenching, tempering temperature on the influence of high strength steel mechanical properties of wear resistant. The results show that high strength and toughness wear-resistant cast steel with 880°C× 30min after oil quenching, the hardness of 38.6HRC steel, the impact toughness value reaches 40.18J/cm2. After 200°C, 400°C and 600°C tempering, with the increase of the tempering temperature, the hardness decreased linearly, as by 600°C tempering, the hardness has been reduced to 22.3HRC. Impact toughness with the tempering temperature, the overall upward trend, the impact toughness of some reduced at 400°C, the highest impact toughness value reaches 113.34J/cm2. From the fracture morphology can be seen, with the increase of tempering temperature, ductile fracture increased, by 600°C tempering is dimple fracture, obviously can not see the traces of brittle fracture.
Study on Thermal Stability and Salt Spray Resistance of SS-O Solar Spectrum Selective Absorbing Coating
Authors: Liu Han Wu , Feng Hai Mei , Liu Jun Ming , Li Xue Zhe
Published: September 2013

The Cu-based SS-O solar spectrum flat-plate selective absorption coating system was prepared by the method of direct current reactive sputtering coating films, in which, two layers are SS-O absorbing layer and one is Si-O anti-reflection layer. The reflectance spectra of the absorption coating system was measured by UV3600 spectrophotometer, the reflectance and absorptance of the absorption layer and the anti-reflection layer were calculated, and certain experimental tests were conducted on the prepared absorption coating system in terms of the salt spray resistance performances, thermal stability and damp heat stability. The results show that the SS-O selective absorption coating which was prepared by magnetron sputtering technique possesses excellent processing property, corrosion resistance and thermal stability, whose absorption rate and the emission ratio have reached the level of the German blue tape series. It can meet the domestic demand for high-level flat-plate market.
Flame Retardation of SBS Composites Containing Ammounium Polyphosphate and its Microcapsules
Authors: Wang Zheng Zhou , Huang Yi Ren
Published: September 2013

Flame retardant properties of ammonium polyphosphate (APP) and its two kinds of microcapsules, MFAPP with a shell of MF resin and EPAPP with a shell of epoxy resin, were studied in styrene-butadiene-styrene rubber (SBS). The results indicate that the microencapsulation of APP leads to an increase in LOI in SBS compared with APP. When dipentaerythritol is incorporated into the SBS composites containing APP microcapsules, a further improvement in flame retardancy of the composites is observed. Moreover, thermal decomposition behavior and mechanical properties of the SBS composites are investigated.
The Structural-Acoustic Optimization Analysis Based on Material Selection Optimization Approach
Authors: Wang Wei , Chen Lu Yun
Published: September 2013

The problem of application of the material selection optimization approach for structural-acoustic optimization is investigated. By introducing the stacking sequence hypothesis of metal material, the mechanical parameters of the material and plies number are defined as design variables; the mathematical model of material selection optimization for reducing acoustic power is established. Take a hexahedral box structure for example; the material selection optimization is carried out. The example shows that the vibration and acoustic radiation of composite laminated can be reduced by using material selection optimization method.
Synthesis and Characterization of N, O-Carboxymethyl Chitosan
Authors: Zhang Hao , She Ying , Zheng Xue , Pu Jun Wen
Published: September 2013

N, O-Carboxymethyl chitosan (N, O-CMC) was synthesized in this study, and the properties of N, O-CMC were affected by the synthesis conditions. Structure of N, O-CMC was detected by fourier transform infrared spectrum (FTIR) and X-ray powder diffraction (XRD) was used to analyze the crystallinity. Potentiometric titration was used to measure the DS of N, O-CMC.
Development of Pb-Free Austenitic Stainless Steels
Authors: Li Zhuang , Wu Di , Lv Wei
Published: September 2013

Pb-free austenitic stainless steels were investigated by adding sulfur, rare earth (Re) elements and bismuth. The metallurgical properties, machinability and mechanical properties of both steels were examined. The results show that a significant amount of grey, spindle shaped inclusions were discovered in austenitic stainless steels, and they should belong to MnS inclusions containing bismuth element and rare earths oxide. The addition of S, Bi and Re to austenitic stainless steels improved the machinability. The machinability of steel B is better than that of steel A in a way. The mechanical properties of steel B are better than those of steel A, especially total elongation owing to the presence of rare earth elements. From the viewpoint of life cycle assessment, it is proposed that the development of Pb-free austenitic stainless steels containing S, Bi and Re is desirable.
Detection and Control of Building Materials Quality
Authors: Dong Xiao Lin , Han Dong Nan
Published: September 2013

Along with the high-speed development of China's construction industry, building materials as the material basis of civil engineering construction, the quality of building materials is directly related to the quality of construction projects, so the good building materials quality, particularly important to detect and control work. In this paper, combined with the author's working practice, discusses how to do detection and control the quality of building materials should pay attention to the problem.
Preparation and Tensile Properties of Carbon Fiber Reinforced Polyethylene Resin Composite
Authors: He Bo Lin , Yu Ying Xia , Li Li
Published: September 2013

The composite of carbon fiber reinforced polyethylene resin was prepared by using a twin-screw extruder. The effect of carbon fiber content on the tensile properties of the composite of carbon fiber reinforced polyethylene resin was researched. The tensile fracture failure mechanism of composite materials was analyzed. The experimental results indicate that with the increase of the content of carbon fiber in the composite material, the tensile strength and tensile modulus increase gradually. When the carbon fiber content in the composites is 4.02%, compared to the pure polyethylene resin matrix, the tensile strength and tensile elastic modulus is increased by 18.45% and 208.37%, respectively. With the increase of adding amount of carbon fiber and the carbon fiber volume fraction is less than 0.1 in composite material, the stress load subjected by carbon fiber is significantly increased, which is close to the linear relationship.
Application and Research of Monte Carlo Method on Surface Morphology of Copper Matrix Composites
Authors: Ma Run Bo , Xu Shi Meng , Du Jian Hua
Published: September 2013

Through the analysis and research on the microstructure and phase diagram of copper matrix composites, by use of collage method to approximate graphite particle and silicon dioxide particle, combined with statistical method analyzing some statistical characteristics of graphite particle and silicon dioxide particle .On the basis of the result that have been get in this paper, microstructure and phase diagram of copper matrix composites was simulated by taking advantage of direct Monte Carlo method.
Experimental Research on Sealing Structure Leak-Rate of Pressurized Tube
Authors: Shao Xin Jie , Tian Guang , Liu Jin Hua , Zhang Jian Bin , Yang Li Li , Qi Yun Guang
Published: September 2013

In aerospace engineering, seal is an important component of manned spacecraft life-support system. The pressurized tube sealing equipment is designed, and the experimental system of principle leak-rate of pressurized tube is built, and the experimental theory of the principle leak-rate of pressurized tube is carried out. The experimental results show that leak-rate of pressurized tube is related with the internal pressure of pressurized tube, and sealing ability can be adjusted by controlling the pressure in tube. And leak-rate of pressurized tube is involved with sealed pressure differential, and the bigger pressure differential is, the larger leak-rate becomes. And pressurized tube can fit for big structure transfiguration, which provides condition for lessening structural weight. And the pressurized tube can meet the demands of sealing of space station.
Analysis of Stress Corrosion of Brass Tube on Heat Exchangers
Authors: Wang Zheng Fang
Published: September 2013

U shape brass tube bundle on heat exchanger cracked when it was having ammonia leak test. Sample was made from brass tube fragment, polished the surface of the sample, eroded it with solution of 5% iron trichloride (FeCl3) and 10% hydrochloric acid (HCl), then took photos with Nicon-300 metallographic microscope. The fracture is a kind of stress corrosion cracking, the reason of cracking was analyzed. The technology of test was improved, the method should be paid attention to during brass tube exchanger manufacture was given out too.
Structure Analysis and Quality Prediction of DP Steel Engine Hood in the Process of Hot Stamping
Authors: Zhang Zhi Ping , Liu Han Wu , Chen Tian Xiang , Yu Zhang Yi
Published: September 2013

Due to its good formability characteristics, such as high strength, high initial work hardening rate, as well as continuous yielding, thin-walled DP steel possesses great advantages of weight loss and security, and has been used to replace ordinary steel for automotive parts manufacturing by a lot of automotive industry. But along with the improvement of the performance of the strength, the high strength steels formability is worsened dramatically, and failure and fracture often occurs in its cold stamping process. So, hot stamping technology must be adopted to make the formability available. In the paper, it took the hot stamping process of DP steel engine hood for example and took DP800 as object of research. The forming limit, variation of major strain, minor strain and thickness, as well as the potential equality defects were analyzed by using eta/DYNAFORM software. The research results show that duplex steel plate can meet the performance requirements of car engine dumping plank forming, which offers theory basis for the production of similar parts.
Study on Sand Group Motion Characteristics of Vibration Moulding
Authors: He Tao , Yang Xia , Zhang Dong Su , Wang Cheng Jun
Published: September 2013

Vibration moulding of expendable pattern casting (EPC) was simulated by three dimensional discrete element method, a special EPS tube for test was devised, and the law of vibration form on the motion of sand group was summed up. The results show that vibration form and filling motion of sand group in-tube has consistency in the direction, at the same time gravity and tube direction have a great influence on sand group motion, which leads to particularity of Z tube and Z vibration.
Study on Pattern Formation of Segment Color Yarn Plain Weft Knitted Fabric
Authors: Shi Jing Jing , Yang En Long , Chen Wei Xiong , Xue Yuan , Yi Hong Lei
Published: September 2013

Mathematical analysis, computer simulation and test knitting are used to investigate pattern formation of segment color yarn weft knitted fabric. Vertical stripe, regular argyle and disorganization cross striation are separately formed when yarn length of a course and one color segment cycle conform to certain ratio. The width, height and numbers of regular argyle pattern are deeply studied. Results of three methods match well.
Design of Control System in Strapping Machine for Paper Bills
Authors: Zhang Xin Ju , Ma Xiu Hong
Published: September 2013

The strapping machine for Paper Bills typically was designed to reduce labor intensity and enhance production automation level. The machines structure and working principle were described. There are three work posts in this equipment, they work continuously. This approach makes it very easy to split up a complex transformation into a series of simple transformations arranged in a loop line. The machine includes currency count/counterfeit distinguishing system, conveying system and strapping system. 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.
Development and Application of On-Line Control System for Operation Mode in Substations
Authors: Gao Nan Nan , Huang Jin Xin , Li Hong Bo
Published: September 2013

This paper proposes a kind of on-line control system for operation mode in substations, which can read data on-line from EMS, and then calculate total loss of substations in parallel operation, split operation or individual operation mode. According to the result, the system can select the most optimized way and feed the conclusion back to EMS, which can make substations operate in the most optimized way. The system is suitable for optimization of substation in rural power grid.
The Research of Sewage Treatment Control Methods Based on the Internet of Things
Authors: Zhang Li Na , Li Jie , Liu Liang
Published: September 2013

Complexity control theory based on the model depict the complexity of the controlled object more accurately through research model and data-driven control theory of Internet of things is more urgent to be explored through the data to find out the system of internal control mechanism. Look from the appearance, the complexity of data including a lot of sample, high dimension, strong time-varying factors. The representation of implicit information is huge amounts of data redundancy, high-dimensional data clustering features, the time-frequency characteristics of time-varying data, etc. At present, the data-driven control theory research is just beginning [1-3], the scientific problem is the lack of unified definition and theoretical framework. This paper will analyze the sewage treatment system of some sewage treatment plant, making the internal scientific questions are more specifically.
Research on the Fracture Splitting Technology of Connecting Rod Based on Car TSI Engine
Authors: Liu Tian Ming , Xu Wen , Feng Wei Dong
Published: September 2013

The research of the expanding broken technology of engine connecting rod (also known as the fracture splitting technology) is based on some known factors which effect on connecting rod splitting to make comprehensive analysis on 36MnVS4, the material of connecting rod which is suitable for the fracture splitting technology, it analyses the effect of each chemical composition in steel on mechanical and physical properties, for material steel of new type fracture splitting connecting rod , and makes a theoretical analysis on the fracture splitting technology of the engine connecting rod. Through the analysis and research, a new method to research the fracture splitting of connecting rod is determined, as well as gets some rules to affect process parameter.
Study on Treating Sintering Flue Gas with Coking Wastewater
Authors: Dong Jian Jun , Hao Su Ju , Sun Ya Ping , Jiang Wu Feng , Zhang Yu Zhu
Published: September 2013

There are large amount of ammonia in coking wastewater. It is a good recycling desulfurizer. Sintering flue gas has the characteristics, such as large amount of, low SO2 concentration, great changes of operation load. Treating sintering flue gas with coking wastewater can attain the destination of treating waste with waste. This paper adopts a spray tower countercurrent device, and SO2 concentration in the entrance and exit flue gas is on line detected by an automatic flue gas detection instrument. The paper studies on the change rule of SO2 concentration in the process of treating sintering flue gas using coking wastewater, and the influence of SO2 initial concentration in sintering flue gas to the desulfurization rate. The results show that after being treated the sintering flue gas can reach the emission standard for air pollutants of iron and steel industry.
Synchronization in Drive-Response Dynamical Networks Based on Nonlinear Control
Authors: Feng Dong Dong
Published: September 2013

In this paper, synchronization in drive-response dynamical networks is investigated. By using the Gerschgorins disk theorem and the stability theory, a nonlinear controller is designed to make the drive-response dynamical networks synchronized. Some sufficient conditions for achieving the synchronization of the drive-response dynamical networks are derived. The structure of the network can be random, regular, small-world, or scale-free. A numerical example is given to demonstrate the validity of the proposed method, in which the famous Lorenz system is chosen as the nodes of the network. Simulation results have verified the correctness and effectiveness of the proposed scheme. Moreover, it is worth noting that the time used for achieving synchronization of the drive-response dynamical networks sensitively depends on the coupling strength .
Study on Uninterrupted Shift Transmission Shift Strategy Based on Fuzzy Control
Authors: Zhao Ke Gang , Chang Hao , Hu Yong Liang , Yao Wei Hao
Published: September 2013

Uninterrupted Shift Transmission (UST) is a novel vehicle transmission and which is introduced as the research object in this paper. It realizes torque uninterrupted shift by controlling dual multimode controlled shifter (MCS) modes and synchronizers. Fuzzy control technology is adopted in shift control strategy in order to improve its shift quality. Experimental results show that the fuzzy control strategy can improve the shift quality of UST effectively.
The Mechanical Characteristics Study on an Interconnected Anti-Rolling Suspension System
Authors: Hou You Shan , Song Hui Xin , Wang Chao
Published: September 2013

The heavy-duty special vehicles easily roll during steering, anti-rolling technology becomes a critical technology to the heavy-duty vehicles. Aiming at the rolling problem of a full load heavy vehicle in the process of steering, an interconnected anti-rolling suspension system with adjustable damping was designed, the nonlinear mathematical models of both hydro-pneumatic independent suspension and interconnected anti-rolling suspension system were established. The mechanical characteristics of two kind of suspension were studied through digital simulation method, discussing the system parameter changes affection on the performance of interconnected anti-rolling suspension system. The study results indicate that the interconnected anti-rolling suspension system bitterly improves vehicles rolling resistance in contrast to the oil-gas mixed independent suspension, the study results provide theoretical basis for the anti-rolling s design of heavy-duty vehicles.
Comparative Research on Damping Effects of Shock Absorders Relatively Made in Russian and China on the Fuel-Lubricating Oil Heat Exchanger of Aeroengine
Authors: Yang Kun Yu , Gan Hui , Qu Hong Yi
Published: September 2013

To enhance the strength of the skin-stringer structures for aircraft, comparative tests between single-pass and double-pass welding by friction stir welding (FSW) were implemented. 1.8mm 2524-T3 aluminum alloy was used as the skin and 2.4mm 7150-T77511 aluminum alloy was used as the stringer with equilateral right-angle structure, and perfect joints without internal defects were obtained. Moreover, the tensile, peel and metallographic tests were implemented, and the results show that the average peel strength of double-pass FSW is 2 times or more than single-pass FSW. Therefore double-pass FSW can effectively improve the connection strength of aircraft skin and stringers structure.
Application of Backstepping Stability Control in the Diffusion Process
Authors: Zhang Xiang
Published: September 2013

In this paper, 1-D mathematical model of the coagulation process of the polyacrylonitrile (PAN) carbon fiber is established using Fick diffusion law. Boundary stabilization for a linear parabolic diffusion-reaction partial differential equation (PDE) is considered. We use the method of backstepping to implement the boundary control of the concentration diffusion in the forming process of carbon fiber. By using the coordinate transformation, we transform the original system to a standard static system. The transformation depends on a so called gain kernel function, and we can design the boundary feedback controller using the kernel function. For the model in this paper, the kernel function itself is a hyperbolic PDE, and there is no explicit formation. Therefore, we use numerical methods to obtain the kernel function, and give the simulation results for the closed-loop control response. The simulation results show that the open-loop unstable system is stabilized by a boundary feedback.
Centrifugal Pump Volute Parametric Design Based on SolidWorks
Authors: Tu Wei Wei , Zhang Li Xiang , Sun Jun
Published: September 2013

SolidWorks is a powerful, easy to use, the three characteristics of scientific and technological innovation. SolidWorks also provides a powerful API interface processing mode allows the user to write according to their own conditions and needs processing hanging with the application of the software environment. SolidWorks itself can not be drawn to the curve by curve equation operation in the corresponding module can not be achieved by drawing module drawing functions of centrifugal pump volute, here we use Visual Basic 6.0 to SolidWorks secondary development, in order to achieve parametric design of centrifugal pumps.
Optimization Calculation and Simulation Analysis of Mine Hydraulic Grilled Slag Machine Cantilever
Authors: Li Yu , Zhou Zhe Bo , Song Hai Lang , Xu Man Man
Published: September 2013

Cantilever is a key component of Mine Hydraulic Grilled Slag Machine and also is an important bearing member. Parametric analysis and optimization calculation should be done to meet the requirements of its strength and rigidity. It can reduce weight and stress concentration, which makes its structure size more reasonable. With the aid of Solid works 3D modeling software, people can create the working device model. Importing adams to create its virtual prototype model to make dynamics simulation analysis and draw variation graph of key points during its working process to lay the foundation for the finite element analysis.
Research on Tractor of Coal Mine Horizontal Belt Extension Transfer Machine
Authors: Mao Ping Huai , Zhai Bing , Li Jing Xi
Published: September 2013

Coal mine horizontal belt extension transfer machine is designed in order to solve the mine loading efficiency is not high; especially the most loading mechanical failed to solve continuous loading problem. This machine can also load a whole column tramcars and tramcars without modification with direct use, efficiency improve obviously. This paper first introduces transfer machine structure and working process, and introduces its important part tractor, structure and main function; Then as the main force of tractor parts, we frame for stress analysis, and set up the frame of 3-D model; Finally put the model into ANSYS of its structure statics analysis, and according to the result of analysis frame structure optimization. We will use the same approach to the design of tractor other components, finally complete the complete tractor. Through the study of tractor, summarizes the design methods for other similar mechanical similar provide a theory basis for the design.
The Higher Order Crack-Tip Field for Crack along x-Axis in Reissner's Bidirectional FGMs Cylindrical Shell
Authors: Dai Yao , Zhang Lei , Chong Xiao , Chen Ying
Published: September 2013

The crack located along x-axis in bi-directional functionally graded cylindrical Reissners shell is studied. The asymptotic expansion method is used to obtain the eigen-solution of the higher order crack tip fields. The results are similar to Williams solutions to plane problems for homogeneous materials.
Structural Design of a Multi-Degree-of-Freedom Scalable Tree Trimmer
Authors: Xu Man Man , Xie Sai Nan , Li Yu , Chen Qing Hua
Published: September 2013

The tree trim is an important part of the fruit tree planting and landscape tree management. In this paper, it aimed at domestic plants trimmed work low level of mechanization, labor-intensive and trim efficiency and low status quo, according to the actual working environment of the plant trim work. A Multi-Degree-of-Freedom Scalable Tree Trimmer was designed, its head can do multiple DOF motion ,and its body height can freely telescopic adjustment. It is able to improve the mechanization degree of tree trim work, to reduce the cost of trim work and shorten the time of trim work. It is also could improve working conditions and improve the safety of the tree trim work.
The Design and Analysis of Mast of Fixed Window-Cleaning Based on ANSYS
Authors: Mao Ping Huai , Ding Li , Li Jing Xi
Published: September 2013

Recently, with the rapid development of the window-cleaning, we need set up a scientific design and renovation method. This paper based on the working principle of fixed window-cleaning, we deduced the design methods of the mast when its parameters changed followed the variation of the working condition. Then, we ensured the most dangerous working condition. And in this condition, we made an analysis of the mast based on ANSYS and found out the regularities of distribution of the stress. At last, it could provide worthy reference for the design of mast.
Study on Wall-Flow of a New Type of Efficient Uniform-Flow Packed Equipment
Authors: Zhou San Pin
Published: September 2013

In order to deal with the wall flow effect and the scaling effect because of uneven distribution of fluid overall that commonly exist in packed tower, a new type efficient symmetrical-flow packed equipment was developed. In the same condition, the symmetrical-flow packed equipment was studied comparatively with the common packed equipment by experiments and numerical simulation, and the results such as pressure drop, wall-flow contours and velocity distribution were given. The study results show that the pressure drop of two kinds of packed tower have no significant differences , wall flow is significantly reduced by about 31%, gas-liquid velocity uniformly distribute compared with ordinary packing. The result demonstrate that the symmetrical-flow packed equipment has good effect tin improving the uniform distribution of the macroscopic flowing of fluid, the wall flow effect of the symmetrical-flow packed equipment can be effectively reduced, and the scaling effect eliminated. So the mass transfer efficiency of the packed tower is improved.
Oxidative Stability of Tengjiao (Zanthoxylum schinifolium) Oil with Added Compound Antioxidants
Authors: Li Dong , Zuo Yong , Yu Chao , Feng Zhi Ping , Wang Wen Ting
Published: September 2013

The oxidative stability of Tengjiao (Zanthoxylum schinifolium) Oil with added single or compound antioxidants were studied by Schaal-oven test according to the peroxide value (PV) and acid value (AV) .The results indicate that, TBHQ be used as the single antioxidant, the optimum amount was 0.015%, the affection more than 0.015% was not obvious. TBHQ be used as the compound antioxidant, the minimum amount of significant antioxidant activity was 0.01%, and the best amount was 0.015% TBHQ + 0.005% AP, which was better than 0.015% and 0.02% TBHQ.
Modeling and Control of Biochemical Reactor
Authors: Li Shi , Zong Xi Ju , Hu Yan
Published: September 2013

This paper is concerns with the study of modeling and control of biochemical reactor. Firstly, a mathematical model is established for a typical biochemical reactor, the mass balance equations are established individually for substrate concentration and biomass concentration. Then, the model is linearized at the steady-state point, two linear models are derived: state space model and transfer function model. The transfer function model is used in internal model control (IMC), where the filter parameter is selected and discussed. The state space model is applied in model predictive control (MPC), where controller parameters of control prediction horizon length and constraint of control variable variation are discussed.
Analysis of Frequency and Damping Ratio on the Shock Isolation Efficiency
Authors: Wu Shi Jie , He Lin , Zhao Xi Zhi
Published: September 2013

The traditional shock isolation system is only designed in stiffness regardless of damping, which causes acute contradiction between absolute acceleration amplitude and relative displacement amplitude. Based on the single degree of freedom negative shock isolation system, numerical analysis demonstrates that relative little amplitude of absolute acceleration and relative displacement could be attained within a certain range of damping and frequency ratio. Selecting appropriate damping and stiffness of vibration isolator can resolve contradiction between absolute acceleration amplitude and relative displacement amplitude and consequently improve shock isolation efficiency.
A Research on Mulberry Wine Fermentation Condition Optimization by Means of BBD
Authors: Zuo Yong , Qi Feng , Li Yang
Published: September 2013

The study was designed by the method of single factor experiment combining with BBD designing experiment to optimize the best fermentation condition of mulberry wine. Through the experiment the best fermentation condition of mulberry wine was confirmed as follows: The yeast addition was 0.14%, sugar content was adjusted to 194.22 g/L before fermentation, the SO2 addition was 76.70mg/L and the temperature was 25.4°C. The alcohol of mulberry wine was 10.3v/v after fermentation.