bluuebunny/crossref_metadata_2025 huggingface dataset:
Codification as Part of Knowledge Management in Research Projects in the Field of Metallurgy
Authors: Regulski Krzysztof , Kluska-Nawarecka Stanisława , Wilk-Kołodziejczyk Dorota
Published: December 2014

Increasing requirements in the field of quality and management standards are the reason why knowledge management is regarded as an upcoming need for the metal processing industry. To fully benefit from the organisational achievements which are knowledge resources, and to meet the expectations of customers, one should think about functional, but also modern, computer system that allows the integration of heterogeneous sources of knowledge. The article describes practical aspects of the codification of metallurgical knowledge for the needs of a system of knowledge integration operating in industrial plants. The article propose successive steps to create objects of knowledge and requirements imposed onto the knowledge engineers. The presented methodology is consistent with the standards of knowledge management in the field of codification, and is based on the latest achievements of information science in the field of formal representation of knowledge.
The Selected Aspects of Sustainable Development in Supply Chain Management (SCM)
Authors: Bajdor Paula , Ulfik Agnieszka , Nowak Stefan
Published: December 2014

Due to the interdisciplinary nature of the concept of sustainable development, its rules and regulations are currently being implemented in almost all activities. Principles of sustainable development concept is most often used in companies currently operating in the market, and its practical application manifests itself in all aspects of business: logistics, manufacturing, marketing or communication with the outside, which takes place between the organization and its potential and existing consumers, sellers and buyers, also between the organization and various stakeholders [1]. This article presents the essence of a sustainable supply chain, along with several examples of companies, that take action to achieve a sustainable state in their supply chains. In this article is presented the enterprises’ point of view as being the first tie in the whole supply chain. But their activities, taken in order to include some aspects of sustainable development, often have a significant influence on the next elements of supply chains, such as customers, producers or final users.
Draft Methodology for Selecting the Appropriate Storage Area Design in Intermodal Logistics Center
Authors: Stopka Ondrej , Kampf Rudolf
Published: December 2014

At present, intermodal logistics centers play an important role in the world in context of transport and logistics services. The purpose of this paper is to propose the methodology for selecting the appropriate storage area design for intermodal transport units (ITU ́s) in intermodal logistics center. In this matter, four different scenarios of storage area design were taken into. Storage area configuration can significantly influence the logistics and transport services productivity and can have a significant impact on the economics effectiveness of the enterprise. In the paper, the AHP method is used in the context of selecting the appropriate design. This method is able to assess each design in regard to each of the determined criterion and finally prioritize all the designs.
Allocation of Distribution Warehouse Using Selected Geometric Methods
Authors: Šaderová Janka , Malindžáková Marcela , Husár Jozef , Schréter Róbert
Published: December 2014

Strategic location of the distribution warehouse is a fundamental role of the strategic business management. The article shows an example of allocation calculations for distribution warehouse using three methods such as – method of axial distance, method of quadratic distance and Cooper’s Iterative Method based on WGS 84 coordinate system. In the final part of the article there are calculated and compared results of an objective function for space allocation.
Proposal of Factors for Multicriteria Appraisal of Performance of Car Repair Shop Employees
Authors: Tkáč Michal , Malindžák Dušan
Published: December 2014

The motivation factor of individual employees of a car repair shop working at various levels has an extraordinary impact on fast and reliable completion of car repair orders. The human factor plays an irreplaceable role in the process of implementing repairs, and respective and adequate qualification and corresponding appraisal method are very important. The performance appraisal of employees of a car repair shop and their financial reward and salary are very closely correlated. The article is focused on the proposal of motivators and their hierarchic structure for multicriteria performance appraisal of the car repair shop employees.
Management Control of RFID Technology Implementation Process
Authors: Matušková Simona , Švub Jiří , Beneš Filip
Published: December 2014

The paper presents a proven method used for supporting the implementation management control process of RFID technologies to track the location of objects in a retail environment. Using a SWOT analysis, we identified several scenarios that guide the company in the implementation process of the technology according to its own chosen strategy. In accordance with our results, non-traditional applications of the UHF RFID technology could have a high application potential. The outcome of our work may in the future provide the basis for applying the described solution that could enable a deeper study of interactions between the allocation of product classes on the sales floor and retail customers.
Evaluation of Supplier Performance from the Perspective of Customers by their Attitudes
Authors: Lostakova Hana , Pecinova Zuzana , Branska Lenka , Vlckova Vladimira , Patak Michal
Published: December 2014

Current approaches to supplier evaluation from the perspective of customers mainly consist in the evaluation of the perceived quality of parameters of supply and services of each supplier. Although this aspect of the supplier evaluation from the perspective of customers is an essential part of the evaluation of suppliers, its drawback is the orientation to the past. So far, less attention in the evaluation of suppliers from the perspective of customers has been paid to the consequences of delivering value to customers, namely to the impact of the value delivered to customers on the attitudes of individual customers, their purchase intentions and their future purchase behavior. The article presents the basic features of the methodology of supplier evaluation focused on stages of customer readiness for future purchases from suppliers from their awareness through their preferences over other suppliers, satisfaction, retention to loyalty and results of primary research into this evaluation among purchasers of selected products determined for production consumption.
The Basic Principle of Logistic Theory
Authors: Malindžák Dušan
Published: December 2014

The article deals with a matter of principle logistics as a scientific discipline, its location in scientific area and its relation to other fields of science. Defines logistics as part of cybernetics and characterizes the basic criteria for the existence of research disciplines and they are: feed forward system, system approach, principles and tools of logistic, objects of logistics – flows and chains, control variables and optimization criteria.
Proposal of the Integrated Geothermal Centre Model and its Allocation
Authors: Marasová Daniela , Jablonská Jana , Andrejiová Miriam , Drevko Slavomír
Published: December 2014

The main aim of this article is to propose a model of an integrated geothermal spa resort and its allocation using multi-criteria decision making. Proposal for allocation of mentioned spa resort is defined on the basis of the evaluation criteria.
Conceptual Framework for Assessing the Green Transport Level in Industrial Companies and Supply Chains
Authors: Staš David , Lenort Radim , Wicher Pavel , Holman David
Published: December 2014

The paper presents a conceptual framework for measurement, monitoring, and evaluation of an industrial company and supply chain Green Transport level. The framework contains five main phases – preliminary analysis, transport system analysis, selection of assessing parameters, taxonomy development, and evaluation. For each phase are defined fundamental principles and recommended tools. The verification of the designed conceptual framework was performed on a real supply chain of the European automotive industry.
A New Approach to Eco-Logistics
Authors: Husáková Nikoleta
Published: December 2014

Solution of problems in the field of ecology and environment has an important place at the state level, but also at the level of civil initiatives and individuals. It is in the result of increasing limitedness of natural resources and environmental consciousness. Eco-logistics is important effective tool which is the object of study, discussions of many experts in logistics, because it provides a wide scope of application. The main mission of eco-logistics is underling the importance of production processes, services and other activities connected with logistics impact on the environment. Suitable way of eco-logistics implementation creates conditions for logistics costs reduction and also for natural resources and environment saving. The paper presents new approach to eco-logistics and its new definition.
Boundary Element Method with Runge-Kutta Convolution Quadrature for Three-Dimensional Dynamic Poroelasticity
Authors: Igumnov L.A. , Vorobtsov I.V. , Litvinchuk S.Yu.
Published: December 2014

The paper contains a brief introduction to the state of the art in poroelasticity models, in BIE & BEM methods application to solve dynamic problems in Laplace domain. Convolution Quadrature Method is formulated, as well as Runge-Kutta convolution quadrature modification and scheme with a key based on the highly oscillatory quadrature principles. Several approaches to Laplace transform inversion, including based on traditional Euler stepping scheme and Runge-Kutta stepping schemes, are numerically compared. A BIE system of direct approach in Laplace domain is used together with the discretization technique based on the collocation method. The boundary is discretized with the quadrilateral 8-node biquadratic elements. Generalized boundary functions are approximated with the help of the Goldshteyn’s displacement-stress matched model. The time-stepping scheme can rely on the application of convolution theorem as well as integration theorem. By means of the developed software the following 3d poroelastodynamic problem were numerically treated: a Heaviside-shaped longitudinal load acting on the face of a column.
About Verification of Wavelet-Based Discrete-Continual Finite Element Method for Three-Dimensional Problems of Structural Analysis Part 1: Structures with Constant Physical and Geometrical Parameters along Basic Direction
Authors: Mozgaleva Marina L. , Akimov Pavel A.
Published: December 2014

This paper is devoted to verification of so-called wavelet-based discrete-continual finite element method (wDCFEM), proposed by authors, for three-dimensional problems of local structural analysis. Formulation of the problem for three-dimensional structure with constant physical and geometrical parameters along so-called its basic direction, solutions obtained by wDCFEM and discrete-continual finite element method (DCFEM) and their comparison are presented. It was confirmed that wDCFEM is rather effective in the most critical, vital, potentially dangerous areas of structure in terms of fracture (areas of the so-called edge effects), where some components of solution are rapidly changing functions and their rate of change in many cases can’t be adequately taken into account by the standard finite element method.
About Verification of Wavelet-Based Discrete-Continual Finite Element Method for Three-Dimensional Problems of Structural Analysis Part 2: Structures with Piecewise Constant Physical and Geometrical Parameters along Basic Direction
Authors: Mozgaleva Marina L. , Akimov Pavel A.
Published: December 2014

This paper is devoted to verification of so-called wavelet-based discrete-continual finite element method (wDCFEM), proposed by authors, for three-dimensional problems of local structural analysis. Formulation of the problem for three-dimensional structure with piecewise constant physical and geometrical parameters along so-called its basic direction, solutions obtained by wDCFEM and discrete-continual finite element method (DCFEM) and their comparison are presented. It was confirmed that wDCFEM is rather effective in the most critical, vital, potentially dangerous areas of structure in terms of fracture (areas of the so-called edge effects), where some components of solution are rapidly changing functions and their rate of change in many cases can’t be adequately taken into account by the standard finite element method.
Laplace Domain Boundary Element Method for 3D Poroelastodynamics
Authors: Igumnov Leonid A. , Petrov Andrey , Amenitskiy Alexander V.
Published: December 2014

To describe poroelastic properties, a dynamic model of Biot’s material is used in the frame of the three-dimensional isotropic linear dynamic poroelasticity with four basic functions – displacements of the elastic skeleton and pore pressures. A direct version of the BIE method is developed. The boundary-element scheme is constructed using: regularized BIE’s, a matched element-by-element approximation, adaptive numerical integration in combination with a singularity-reducing algorithm, etc. The computer simulation is done using the boundary-element methodologies of the stepped method.
Generalized Multiquadrics with Optimal Shape Parameter and Exponent for Deflection and Stress of Functionally Graded Plates
Authors: Chen Ying Tao , Xiang Song , Zhao Wei Ping
Published: December 2014

Deflection and stress of simply functionally graded plates are calculated by the meshless collocation method based on generalized multiquadrics radial basis function. The generalized multiquadric radial basis function has the shape parameter c and exponent which have the important effect in the accuracy of the approximation. The deflection and stress of simply functionally graded plates are calculated using the generalized multiquadrics with optimal shape parameter and exponent which is optimized by the genetic algorithm.
Natural Frequency of Laminated Composite Plates Using a Sinusoidal Theory
Authors: Zhou Guo Qing , Wang Ji , Xiang Song
Published: December 2014

Sinusoidal shear deformation theory is presented to analyze the natural frequencies of simply supported laminated composite plates. The governing differential equations based on sinusoidal theory are solved by a Navier-type analytical method. The present results are compared with the available published results which verify the accuracy of sinusoidal theory.
Effect of Expansion Tube Structure on Regeneration of Diesel Particulate Filter
Authors: Zhang Jun Chao , Du Jia Yi , Ding Dao Wei
Published: December 2014

The regeneration process is simulated under the condition of different expansion tubes by the established model on CFD technology. It turns out that, increasing expansion angle of the expansion tube does good to lower the maximum wall temperature and the axial temperature gradient during the DPF regeneration, while it makes the uniformity of the wall regeneration temperature worse. At the same time, the regeneration rate becomes slower and the radial maximum temperature gradient increases. This study makes great significance to the design and optimization of DPF device structure and prolonging the service life of DPF.
Tailoring the Fundamental Frequency of Laminated Composite Panels Using Material Properties
Authors: Zhang Li Guo , Yang Kang , Zhao Wei Ping , Xiang Song
Published: December 2014

Optimization of material properties is performed to maximize the fundamental frequency of the laminated composite panels by means of the genetic algorithm. The global radial basis function collocation method is used to calculate the fundamental frequency of clamped laminated composite panels. In this paper, the objective function of optimization problem is the maximum fundamental frequency; optimization variables are material properties of laminated panels. The results for the optimal material properties and the maximum fundamental frequencies of the 2-layer plates are presented to verify the validity of present method.
Application of Improved Extended Kalman Filter for Adaptive Model of Aircraft Engine
Authors: Zhou Gu Ting , Su San Mai
Published: December 2014

Adaptive model is the basis of engine fault diagnosis, performance monitoring, engine control, etc. This paper presents an improved kalman filter method which uses engine measurable parameters deviation to estimate the degradation parameters to correct the nominal model, and the acquisition and application of multiple kalman filter gain matrices in the whole flight envelope is analyzed. Simulation is carried out taking a civil engine as simulation object, the simulation results show that the method used in this paper to establish unmeasured parameters adaptive model can get the engine parameters better.
Comparative Analysis of 3D Viscoelastic and Poroelastic Dynamic Boundary-Element Modelling
Authors: Igumnov L.A. , Ipatov A.A. , Lebedeva E.A.
Published: December 2014

3D dynamic boundary-value problems of linear viscoelasticity and poroelasticity are considered. Laplace integral transform and its numerical inversion are used. Classical viscoelastic models, such as Maxwell model, KelvinVoigt model, standard linear solid model, and model with weakly singular kernel (Abel type) are considered. Boundary integral equations (BIE) method is developed to solve three-dimensional boundary-value problems. A numerical modelling of wave propagation is done by means of boundary element approach.
Finite Element Simulation of Stability and Resistance to Extreme Loads of Braced Shell with Elastomeric Bearings
Authors: Belostotsky Alexander M. , Pavlov Andrei S.
Published: December 2014

This article reviews the experience of modeling and evaluation stability of braced shell with elastomeric bearing under static, seismic and extreme loads.
Numerical Simulation Method of Leakage for Lip Seal
Authors: Zhou Qiong , Li Zheng Mei , Wu Yan
Published: December 2014

Lip seal, widely used in industries, is usually applied to seal pressure chamber. Leakage of lip seal has always been a primary problem. In the present study, hydrodynamic property of lubricating film and elastic deformation of sealing lip are analyzed numerically by coupling Reynolds equation and elastic deformation equation. A numerical model for calculating leakage is proposed, results of the analysis will be of help to interference design and structure optimization for auto water pump bearing’s seal.
The Aerodynamic Configuration Design and 3D Modeling of Horizontal Axis Wind Turbine Blade
Authors: Qu Li Gang , Ji Wei , Wang Gui He
Published: December 2014

As the most important part of wind turbine, the aerodynamic properties of blade have crucial influence on wind power generation. In this paper, the blade of 750KW wind turbine is designed in Wilson method. Actual spacial coordinates of blade sections are obtained based on space coordinate transformation theory of points. Then the blade model is created in SolidWorks by these coordinates. In this method, the modeling efficient of blade surfaces could be improved, and following aerodynamic analysis could be conducted based on this model.
Effect of Temperature Distribution on Critical Speeds of a Dual-Rotor System
Authors: Xin Gui Yu , Wang Ke Ming , Qu Mei Jiao , Wang Tian Yin
Published: December 2014

A dual-rotor calculation model which can expand freely in the axial direction is established in this paper, and the effects of one-dimensional axial temperature distribution on critical speeds of the dual-rotor system are analyzed with finite element method. The temperature distribution of the dual-rotor system is given referring to that of similar aero-engine rotor system. Assuming that the left end temperature remains at 0 °C, and the highest temperature on the section of the high-pressure turbine disk is 0 °C, 200 °C, 400 °C, 600 °C, and 800 °C respectively, the critical speeds of the dual-rotor system are calculated, analyzed and compared. Calculation results show that, with the increase of the highest temperature of the dual-rotor system, the reduction percentage of the critical speeds increases, and the impact on the first critical speed is most obvious. When the highest temperature is 800 °C, the first critical speed of the rotor system excited by the low-pressure rotor reduces 13.13%, and that excited by the high-pressure rotor reduces 13.49%.
A Method to Avoid Singularity of the Planar Four-Bar Linkage by Means of Self-Adaptive Structure
Authors: Guo Rui Qin , Hu Wei , Liu Juan , Lin Song
Published: December 2014

The singularity, namely, the output movement of the mechanism is uncertain due to kinematic bifurcation at the singular position, is the intrinsic characteristic of mechanism, resulting in movement out of control. To find a practical solution for this vexed question to make mechanism able to avoid its singular position is the greatest challenge in the field of mechanism. Based on the study of the planar four-bar linkage with singularity, the ideology of introducing self-adaptive mechanism theory into the solution of avoid singularity problem is firstly put forward in this paper. Using self-adaptive mechanism to complement the out of control parameters of singular position can make the mechanism have the ability to avoid singularity. Then the mechanism passes through the singular position smoothly with determined movement and load capability. Finally, the purpose of avoiding singularity is achieved.
Controller Optimization of Quadrotor UAV
Authors: Zhao Xin , Zhao Wei Ping , Xiang Song
Published: December 2014

Adjusting method of traditional PID controller is complicated. The controller obtained by adjusting method of traditional PID may be not optimal. Therefore, present paper utilized the genetic algorithm to optimize the PID controller parameter of roll channel of quadrotor UAV. According to the feature of lateral stability control model of quadrotor UAV, ascend time of system, steady state error, and weighted overshoot are chosen as objective function. In order to obtain the better control effect, penalty function is used to limit the oscillation of system. Simulation results show that PID controller designed by the genetic algorithm possess the excellent flexibility, adaptability and can produce the better control effect.
Finite Element Analysis about Push Plates of Dismounting Coupler and Buffer from Passenger Train Base on ANSYS
Authors: Li Xue Bing
Published: December 2014

The important parts of passenger train—push plates, which force directly coupler and buffer device, and bear heavy load, easily have fatigue damage. The finite element analysis for them is to improve the design , for analyzing structure and checking intensity, so it has a guiding significance.
Longitudinal Nonlinear PID Controller Parameter Optimization of Autopilot Using Genetic Algorithm
Authors: Zhao Xin , Zhao Wei Ping , Xiang Song
Published: December 2014

This paper performed the longitudinal nonlinear PID Controller parameter optimization of general aircraft autopilot based on the longitudinal channel model and genetic algorithm. Proportion, integration and differential gain of nonlinear PID Controller is nonlinear function of controlling error. The objection function involves time integration of error’s absolute value, output of controller and system overshoot. The longitudinal controlling rate optimization of general aircraft autopilot is realized by minimizing the objection function value. Simulation results show that controller designed by the present method is better than traditional PID controller.
Steering Torque Optimization of an In-Wheel Motor Vehicle with Double Pivot Suspension Based on Response Surface and Genetic Algorithm
Authors: Shi Tian Ze , Wang Deng Feng , Zhang You Kun , Dong Hong Liang
Published: December 2014

A rigid-elastic coupling multi-body dynamic model of an in-wheel motor vehicle with double pivot suspension was established. The steering effort performance is analyzed. Results showed an excessive steering force of the vehicle with double pivot suspension. By optimizing the suspension parameters using response surface surrogate model and genetic algorithm, the characteristic of steering effort was improved.
Vehicle Active Rear Wheel Steering Control Based on a Variable Transmission Ratio Control Strategy
Authors: Tan Yun Sheng , Shen Huan , Huang Man Hong , Zhang Si Ran
Published: December 2014

In order to obtain the ideal steering performance, an active rear wheel steering (ARS) controller, based on the variable transmission ratio control strategy, is developed in this paper. ARS controller using sliding mode technique is designed to follow the desired yaw rate which is calculated by the ideal variable transmission ratio. Simulation result shows that, the proposed control strategy both obtains desired steering performance and provides the obvious benefits for the human driver.
Vehicle Robot Driver Research and Development Based on Servo Motor Control
Authors: Zhu Zhong Pan , Du Ai Min , Ma Zhi Xiong , Zhang Wen Yang , Fan Chang Guo
Published: December 2014

Vehicle robot drivers are widely used in automotive tests especial for some tests on automotive chassis dynamometer. However, China has less technology accumulations than west developed countries in the field of research and development of robot driver. In order to promote the developments of the domestic robot driver technology, a vehicle robot driver based on servo motor control was developed for automobile chassis dynamometer test, its system composition, functional features, and key technologies in developing process were expounded specifically in this paper.
Study on Performance Simulation of Vehicle with EM-CVT
Authors: Zhang Lan Chun , Fan Xin , Hang Wei Xing
Published: December 2014

In view of the working principle and characteristics of the CVT with electronic control and a motor as actuator (EM-CVT), a economical car performance is studied by means of combination of simulation calculation and prototyping test. EM-CVT mathematic model is established and embedded into the simulation software Cruise to finish the whole vehicle modeling. The performance comparison between vehicle with EM-CVT and automatic transmission is presented after simulation based on the experiment data on the EM-CVT prototype under UDC, which indicates that the vehicle fuel consumption with EM-CVT is reduced distinctly with the same power performance.
Research and Application of Monitoring and Control Technology for District Heating System
Authors: Wang Hang Bing , Lou Dong Dong , Wang Ya Song , Sun Hua Rong
Published: December 2014

This paper systematically presents a thorough analysis on the construction of the heating monitoring system in Nanjing General Hospital, China. The monitoring method and strategy of were discussed in detail. Besides, the optimization design of the simple closed loop control system was conducted. Finally, an optimal operation analysis system consisting of the heating host machine, costumer thermal monitoring system, and outside environment monitoring system for the heating room was established. As a result, the heating quality, the heating efficiency, and the relationship with costumer were greatly improved.
System Integration for the Environmental Friendly Electric Vehicle
Authors: Yang Kuang Shine , Chang Chih Ming
Published: December 2014

This paper introduced a new power flow control strategy for a variable speed engine-generator based range-extended electric vehicle. The specific fuel consumption map of the internal combustion engine (ICE) has been obtained by off-line experiments to achieve optimal fuel efficiency. Finally, a typical range-extended electric vehicle is modeled and investigated such as acceleration traversing ramp, maximum speed, fuel consumption and emission are performed on the dynamic model of a range-extended electric vehicle. The energy consumption and cost were compared to tradition range-extended electric vehicle. Computer simulation results obtained, confirm the validity and performance of the proposed power flow control approach using for series hybrid electric vehicle.
The Mechanical Structure of a New Energy-Saving Pumping Unit Analysis by Pro/E
Authors: Pham Van Minh , Song Jin Chun , Zhang Kai , Vu Thi Hoai Thu
Published: December 2014

Traditional oil drilling equipment cannot meet the demand of oilfield drilling technology in the later period. Application of new technologies, energy saving and cost reduction are development directions of the oil pumping machine. This paper introduces a new energy-saving hydraulic pumping unit with hydraulic energy recovery system, which drives the hydraulic cylinder to finish pumping action that can reduce the equipment power by 40% under the same load. In this paper, the mechanical structure of a new type of oil pumping unit is built and analysis is done by Pro/E software. The analysis results show: The guiding vehicle mechanism itself contributes to counterweight, and hydraulic actuator is directly connected to the base. So it has the advantages of a simple structure, saves steel, light weight, smaller in size and the manufacturing process requirements are not high. This shows that the machine can directly replace the traditional conventional beam pumping unit and has higher application value.
The Design of Product Packaging Transmission Line Control System Based on Siemens PLC
Authors: Zhong Zong Yang , Sun Hui Lai
Published: December 2014

This paper mainly introduces a kind of product packaging transmission line control system based on Siemens S7-200 PLC. It elaborated the main function principle of the system and the implementation of the control program; SIMATIC WinCC flexible 2008 of SIEMENS was used to monitor the status of the system, and display the real-time data and alarm report. At the same time the system can also be controlled by the screen.
Study on Pavement Performance of Warm Mix Asphalt with DAT
Authors: Wang Kun , Qu Xiang
Published: December 2014

To study the difference of pavement performance between DAT warm-mix asphalt and hot-mix asphalt, the impact on the SBS asphalt with 10% DAT was studied first. Then AC-5 asphalt mixture was made the Marshall specimens according to the indoor mixing and molding temperature. Analyze the road performance between warm mix asphalt and hot mix asphalt. The experiment results show that the SBS asphalt with DAT has small difference to the original. The DAT warm-mix asphalt has poor water stability and low-temperature stability but good high-temperature stability than the hot mix asphalt when the indoor mixing and molding temperature has 20°C reduction. So DAT warm-mix asphalt can achieve the purpose of energy saving.
Study of Waste Rubber Powder Blend Mechanical Properties of NR
Authors: Liu Cai Jun , Xu Wei , Song Jun Zhi
Published: December 2014

The study of the mixing method, mixing time, waste rubber powder as the amount of waste rubber powder by resorcinol (R) and six methyl four amine (H) effect on the mechanical properties of waste rubber powder /NR blend modified. The results show that, with effect of blending method, mixing time and waste rubber powder content on mechanical properties of blend vulcanizate; through modification, can greatly improve the mechanical properties of waste rubber powder blend vulcanizates, as the modifier of resorcinol and six methyl four amine mass ratio was 1/0.5, glue the material mechanical properties are the best, the tensile strength is 17.03 MPa.
The Applied Study Based on the Injection Molding Mechanism of Microcellular Foamed Plastics (MCFP)
Authors: Huang Yi Jun
Published: December 2014

Injection molding is one of several molding technology of microcellular foamed plastics. This paper mainly discusses the injection molding mechanism and applications of microcellular foamed plastics here, and analyzes the influence of microcellular foamed plastics injection molding process parameters, including injection pressure, melt temperature, injection time, etc.; At the same time, this paper makes a more systematic discussions for the injection molding technology of microcellular foamed plastics, and the typical cases of microcellular foamed plastics in engineering application are introduced in detail.
Effects of Purple Sweet Potato Extract Addition in Ascorbic Acid Inhibitor to Corrosion Rate of API 5L Steel in 3.5%NaCl Environment
Authors: Ayende  , Rustandi Andi , Soedarsono Johny Wahyuadi , Priadi Dedi , Sulistijono  , Suprapta Dewa Ngurah , Priyotomo Gadang , Bakri Ridla
Published: December 2014

Using vitamin C or ascorbic acid as corrosion inhibitor has several weakness. In its liquid form ascorbic acid is easily oxidized and its anti oxidant properties unstable due to heat, light, oxidizer, dissolved oxygen and heavy metals. Purple sweet potato (ipomoea batatas L) with its high anthocyanin is one of alternative for green corrosion inhibitor. Extract of purple sweet potato has the ability to hold the enzyme reaction and oxidation proses of ascorbic acid. Purple sweet potato extract mixed with ascorbid acid is used as inhibitor of API 5L steel in 3.5%NaCl. This compound is classifid as mixed type inhibitor. The adding of purple sweet potato extract will assist ascorbic acid to maintance its inhibition efficiency and increases surface layer corrosion resistant of steel. Polarization methods and electrocehmical impedance spectroscopy (EIS) are used to investigate corrosion rate and mechanism of the steel. Appliaction of 4 ml purple sweet potato mixed with 10-4M ascorbic acid inhibitor increases inhibition ability of API 5L steel from 23.5 to 57.52%. Purple sweet potato extract moves polarization curve to lower potential (below 82 mVolt) with tends to be more negative.
Influence of Pulsed Current on the Tensile Behaviors of the 5XXX Aluminum Alloy
Authors: Song Jung Han , Choi Seo Gou
Published: December 2014

Aluminum (Al) alloys have great potential as ideal structural materials because of their high specific strength and stiffness. However, Al alloys exhibit poor ductility at room temperature. Enhancing the formability is a very important and challenging problem to both automotive and manufacturing engineers. In this study, the electro-plastic effects, which is first discovered in 1960s, of 5xxx Al alloy sheets are investigated to improve the formability. To begin with, a test system is built up to carry out the tensile test with heavy electric current flowing through the specimen. The evolutions of the flow stress and the electric resistivity are obtained using this test system. The significant decrease in the flow stress caused by the heavy flowing through current is observed.
The Current Situation and Production Thods of Vulcanized Rubber Powder
Authors: Xu Wei , Kong Jun , Jiang Wei Kai
Published: December 2014

The current situation and production methods of vulcanized rubber powder at home abroad were summarized in this paper. The common production mathods always include RAPRA, anrbient grourd and cryogenic ground. For the current status of the domestic and overseas cryogenic ground technolgy,the prospects of grounding waste rubber by LNG cryogenic energy were put forward.
On the Adsorption Capability of Powder Activated Carbon for Phenol
Authors: Zhong Shao Fen , Mo Jian Wen , Li Yang Ping
Published: December 2014

Using solid phase extraction and high performance liquid chromatography (HPLC), this paper studies the adsorption capability of activated carbon to phenol. The phenol wastewater is simulated with raw water and pure water, respectively. In detail, we examine impact factors including adsorption time, activated carbon dosage, equilibrium concentration of phenol. Using the adsorption principles from the aspect of kinetics, our study shows that adsorption of powder activated carbon to phenol conforms to the Fran Delhi Freundrich adsorption model.
Sonar Image Segmentation Based on an Improved Selection of Initial Contour of Active Contour Model
Authors: Wu Jun Peng , Guo Hai Tao
Published: December 2014

The correct sonar image segmentation is an important foundation for underwater target recognition. Because the contour convergence of the active contour model depends on the selection of initial position, the active contour model is applied in sonar image segmentation. This paper proposed a selection method based on local standard deviation of image as the outline of initial contour. Due to the disturbance of noise, sonar image is usually affected in resolution and contrast. Firstly, sonar image is enhanced by top-hat and bottom-hat transformation in image morphology. Then after image enhancement, a suitable threshold value is chose for rough binarization and the standard deviation of target areas to calculate the local image. According to the size of standard deviation of different regions to determine the scope of the initial contour, sonar image segmentation is achieved by active contour algorithm.
Design of a Spherical Leak Detector for Submarine Oil Pipelines
Authors: Guo Shi Xu , Chen Shi Li , Huang Xin Jing , Xu Tian Shu
Published: December 2014

Spherical leak detectors can detect very tiny leakage in pipelines and have low risk of blockage. It is very suitable for submarine oil pipelines. In this paper, the passing ability of the detector in the vertical segment of a pipe was studied using CFD simulations. The simulation shows that the drag on the detector by the flow inside the pipe is related to the flow velocity V and the diameter ratio λ (d/D).We found it’s a good choice when λ ranges from 0.7~0.8, and a spherical leak detector (λ=0.8) is designed. The field experimentation shows that the prototype of the detector can go through within normal economical flow velocity (0.7m/s-1.5m/s) in 8 inch pipelines.
A Study on Fault Detection Method of Redundant Inertial Navigation System on Micro AUV
Authors: He Kun Peng , Shao Yu Ping , Zhang Lin , Hu Shou Lei , Li Yuan
Published: December 2014

In order to improve the precision and reliability of the autonomous underwater vehicle (AUV) inertial navigation system, a redundant inertial measurement unit (RIMU) based on micro electromechanical system (MEMS) inertial sensors has been designed, then use support vector machine theory (SVM),construct multi-fault classifier training and combine three-step search parameter optimization method,to achieve rapid, automatic fault detection and isolation (FDI). With Monte Carlo simulation and experimental analysis, SVM method has more obvious advantages than conventional Generalized Likelihood ratio Test (GLT) on false alarm rate, undetected rate and correct isolation rate for common fault sources of RIMU, and can detect and identify the type and number of failure more effectively on redundant systems, and provide a guarantee for fault sensors isolation.
Study on Optimization of the Number of DF Stations
Authors: Wu Xiang , Zong Jun Jun , Cui Xun Xue , Liu Chuan Xu
Published: December 2014

Reasonable number of direction finding station is examined in multi-station bearing-crossing location. Though it is believed that increasing the number of station is helpful to improve the location accuracy, In the paper, the maximum likelihood estimation (MLE) as an example. The algorithms and the location error models are given. The simulation results show that the location accuracy will be improved quickly with the increase of the number of the measuring participants, but the improvement will be sharply slowed down if too many station involved, which also boost the complexity of location.
The Design of a Multi-Functional Force Loading Device
Authors: Li Yu Qin , Li Ying Jun , Cui Huan Yong , Wang Gui Cong , Tian Xi Jie
Published: December 2014

As a mechanical component, sensor can detect spatial information. Sensor technology has been widely used in national defense, aerospace, industrial inspection and automated production areas and so on. However, the sensor calibration device cannot meet the demand of the development of the sensor. In this paper, a multi-functional force loading device, which is of good technical performance, reliable operation, wide measurement range and simple measurement method, and a six-dimensional force sensor calibration method are described.
Exploration on Creative Product Customization Design Based on 3D Printing Technology Research
Authors: Liu Ling , Yang Yi
Published: December 2014

This thesis, based on 3D printing technology, explores the customization design methods of creative product, expounds the significance and importance of product customization design from the perspective of demand in the market and energy saving, discusses the advantage for combination of product customization design and 3D printing technology, aiming to advocate meeting the market demand and also saving energy through product customization design by using 3D printing technology.
The Automobile Body Modelling Design Based on CATIA Surface Design Module
Authors: Yu Yang , Ren Jia Jun
Published: December 2014

The paper redesigning some brand automobile body modelling based on CATIA surface design module,In the redesigning process summarizing the design method of automobile body modelling design about CATIA software, so as to shortening the automobile development cycle, reducing the cost, improving the efficiency.
The Application of Folding Structure in the Draw-Bar Box Design
Authors: Liu Heng Li , Zhou Ming Qiao
Published: December 2014

Based on the full analysis of draw-bar box types and functions, and summarizes the occupying larger space question of the box when placed in. Through the studies of the wide application of folding structure in the product, for a particular user, carries on the structure improvement design of rod boxes, not only to retain the existing functions commonly used, while achieving clothing classification, convenient placement, save space; embodies the idea connotation of green design, and highlights the importance of structure design for product innovation design.
The Statement of Optimal Design Problem with the Cusp Catastrophe Theory Application
Authors: Pitukhin Aleksandr Vasilyevich , Skobtsov Igor
Published: December 2014

The purpose of this paper is to present the catastrophe theory method for the optimal design of machine components. A brief description of the cusp catastrophe is presented in the introduction. The statement of optimal design problem is given in the second part of the paper. A single criterion design is presented; the reliability function is used as the objective function. The last part is devoted to probability approach. Manage variables are viewed as stochastic quantities, analytical and statistical linearization methods are used for the reliability function evaluation.
Modeling Analysis and Experiment Research on Rotary Motor Buffer Overflow Valve
Authors: Zhang Yuan Shen , Xian Xue Ping , Yin Jie
Published: December 2014

This paper studies a buffer overflow valve that is attached to a hydraulic rotary motor which could reduce high hydraulic impact when the hydraulic rotary motor starts, brakes or suddenly reverses. A rotary motor buffer overflow valve was modeled and simulated using a computer software, AMESim, and the relation of the buffer overflow valve to the hydraulic impact experienced by the motor was analyzed. The cushioning property of the buffer overflow valve of a rotary motor is verified by using an excavator. It is concluded that having a reasonable design of the buffer overflow valve’s maximum displacement for the buffer set and diameter size for the buffer damping hole, it can reduce the pressure impact experienced by the hydraulic rotary motor and improve its operating performance, which also improves the service life of the system or its hydraulic components.
Numerical Simulation for Premixed Combustion of Multiple Ejection/ Tangential Burner
Authors: Xu Jiang Rong , Chen Xiang Xiang , Wang Guan Qing
Published: December 2014

The methane combustion air coefficient is expected to reach nearly or over 1.2 drawn from previous studies, through rationally allocating the position of the Venturi tube when rotation angle in the 16-18° and tilt angle between 7-7.5°. This paper carries on the numerical simulation of combustion in porous media based on previous work by selecting the optimum conditions, in order to provide certain references for the improvement of porous burner.
Key Technology Research on Dynamic Design of a Large Vibrating Screen
Authors: Zhang Yong Lin , Liu Xiao Peng , Hou Chuan Liang
Published: December 2014

Abstract：The dynamic design method was used to analyze the vibrating screens, which can reveal the distribution of the dynamic stress in the main structure exactly and ensure safety and rationality of the structure design. The screens of the type 5XF150/180 grain screening machine were analyzed by the dynamic method. And modal analysis, harmonic response analysis and transient dynamic analysis were studied by ANSYS Workbench software. According to the calculated results ,dynamic property and kinetic parameters were determined. Then the key technology in the dynamic design was discussed, which provided a reference to the dynamic design of such large vibrating screens.
About Experience of Determining Stiffness and Strength Characteristics of Structural Joints for Modeling Nonlinear Processes of Deformation and Failure of Long Span Structures
Authors: Pavlov Andrei S. , Belostotsky Alexander M.
Published: December 2014

This article reviews the experience of determining stiffness and strength characteristics of structural joints for their further use in FEM models of long span structures for stages of nonlinear dynamic deformation and failure.
The Shift towards Smart, Green and Integrated Raw Materials Efficiency
Authors: Oravcová Eva , Zelko Miroslav
Published: December 2014

Comprehensive environmental observation, eco-innovation and smartization are essential to ensure the delivery of the long-term data and information required to address the shift towards smart, green and integrated raw materials efficiency. For this reason we need the mine-wide digitalization and informatization base model, an advanced mine-wide decision support system and a smart supervision system to supervise and control the production, back to predefined short-term production targets with most likelihood and optimal approaches. There are three main steps to be taken: analysis, evaluation and determination of the shift requirements, development of the models as well as modeling of the scenarios and connection to the smart platform for the support of the decision makers. The paper aims to consider what would be required for a raw materials area to operate as a modern smart technology-supported business. It attempts to provide a vision of some future smart architectures scenarios.
Logistic of Building Simulation Model of Healthcare Facility for Further Performance Management – Case Study
Authors: Onofrejová Daniela , Kováč Jozef , Janeková Jaroslava
Published: December 2014

Logistics, as a scientific discipline, used to be oriented till lately on distribution of finished products from producer site to consumer sector, and this fact has reflected even in modeling and simulation approach. Simulation models of Healthcare Services, and generally services, can be considered as innovative procedures and till lately were not as widely described as for example typical material flow in manufacture. However, base knowledge that inheres in production simulation models can be applied at building of services simulation models.