bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Architecture Material Strength Measurement System Based on Ultrasonic Sensor Array
Authors: Tao Rui Feng
Published: October 2014

The ultrasonic sensor array based on building material strength measurement system design method was proposed in order to solve the traditional reinforced concrete structure strength testing system is complicated measurement problem. The system through the design based on the sensor array architecture signal acquisition hardware module to the building materials ultrasonic echo for acquisition,software design,acquisition reinforced concrete structure ultrasonic information parameters,calculate building materials strength performance.System testing results show that the system improves the reinforced concrete structure strength performance measurement accuracy.
Experimental Cutting Force Properties on Interpenetrating Network Composites with Double Metal Phases
Authors: Fan Ning , Yu Yong , Bai Yang
Published: October 2014

Cutting properties of interpenetrating network composites are important to ensure machining quality. The cutting force signals were measured by resistance strain gage of octagonal ring style and data acquisition and processing system. The results show that the cutting forces are affected by cutting conditions. To average cutting forces of interpenetrating network composites, the laws are basically consistent with that of the traditional materials. Because of the reinforced phase, the sudden cutting forces arise in cutting process whose values are relate to cutting parameters and reinforced phase dimensions.
Hydrophilicity Characterization on Cleaned Bonded Silicon Based Surface
Authors: Aziz Muhammad Hafiz Ab , Sauli Zaliman , Retnasamy Vithyacharan , Wan Norhaimi Wan Mokhdzani , Mohamad Isa Muammar , Kamarudin Hussin
Published: October 2014

This paper reports on the contact angle measurement analysis on a silicon based surface for anodic bonding process cleaned by three distinct cleaning processes. The three cleaning solutions tested in this experiment were RCA, piranha and acetone. Water Droplet Test (WDT) was done to analyze the contact angle of micro droplet on sample surface. It can be done by dropping a droplet of water in constant volume at the fixed height and angle. Only RCA process constantly decreases the contact angle value after cleaning. The compilations of data strongly proved that all samples become hydrophilic after RCA cleaning process. Samples which undergo piranha and acetone cleaning did not prove any characteristic of hydrophilic or hydrophobic surface after cleaning.
Properties of Special Mortar Made with Raw Waste Material
Authors: Mohd Sani Mohd Syahrul Hisyam , Muftah Fadhluhartini , Ismail Muhammad Isha , Ab. Rahman Marzuki
Published: October 2014

The paper deals with the properties of a special mortar using a Waste Paper Sludge Ash (WPSA) from Waste Paper Recycling Industry and Bottom Ash (BA) from Coal Electric Power Stations. Special mortar with some advantages is proposed to give a significant impact for replacing of normal cement mortar. The advantages are approached due to the problem that occurred from collecting raw material such as pollution problems and environmental impact issues. Besides, the raw material sources of cement and sand is limited and this issue engages with the ideas to produce new material in mortar and masonry engineering. A total 72 cubes mortar is cast and determined their properties of chemical and mechanical. The properties of special mortar are compared with other special mortar made of other waste material. The compression strength of special mortar is conducted at the age 3, 7, 28 and 40 days of curing. From the result of chemical properties, it showed that the special mortar created the high compression strength value for all mixes. The compression strength of special mortar is increased by increasing the percentage sand replacement by BA. But, the compression strength is decreased when WPSA is increased. Finally, the special mortar with 100 % BA and 10 % WPSA showed the appropriate proportion for producing special mortar.
Zinc Removal Using Honey Dew Rind
Authors: Othman N. , Che-Azhar A.S. , Suhaimi A.
Published: October 2014

Heavy metals pollution in wastewater from agriculture and industrial waste has been a great concern due to their toxic condition and adverse effect to the environment and human life. One of the treatment of heavy metals through biosorption. In this study, zinc is the highest concentration heavy metal in mosaics wastewater with 350 - 450 mg/L and thus, it has been selected for further study for heavy metals removal. Honeydew rind was used as biosorbent material to remove zinc in the wastewater. Characterization and optimization study were carried out. The optimum condition for pH, biosorbent amount, concentration of wastewater and contact time are at pH 6, 1.5g adsorbent, 400 mg/L zinc and 30 minutes contact time respectively 63% zic removal. This finding indicates that honeydew rind is effectively acted as biosorbent in biosorption process for removing zinc from wastewater.
Numerical Simulation and Experiment of Traveling Wave Piezoelectric De-Icing Technique
Authors: Li Qing Ying , Bai Tian , Zhu Chun Ling
Published: October 2014

A new de-icing method is proposed based on the traveling wave piezoelectric theory, which is to remove residual ice on the fix points of the aircrafts. Testing equipment is designed as the following steps. Firstly, without piezoelectric ceramics, modal analysis of the testing skin which the dimension is 270×90×1.5 mm is completed to confirm the position of the piezoelectric ceramics. The piezoelectric ceramics are adhered to the testing skin with the maximum strain of the bending modes which the frequencies along X and Y direction are close to each other based on the above modal analysis. Then, the harmonic response analysis of the testing skin with ceramics is carried out to study the available excitation frequency in which the skin can travel looply. Finally, the equipments are fabricated to verify the numerical simulations. It is obtained that the excitation frequency to form the traveling wave is from 5099 to 5121 Hz. The input voltage passes 400 V can de-ice when the adhesive strength is set as 2 MPa in von Mises yield criterion. If the refrigerated ice is similar to the aerial ice, it is easily removed by the experimental equipments. However, it is required to further the research because this de-icing technique is still in its infancy.
Failure Analysis of Composite Laminates under Biaxial Tension: A Review and Framework
Authors: Muhamad Irwan Mohd Din , Zurri Adam Mohd Adnan , Mahmud Jamaluddin
Published: October 2014

The designing of composite structures for modern and precision application is complicated due to its anisotropic and inhomogeneous material behaviour. Therefore, reliable methodology for fully predicting the performance of composite structures must be developed. Hence, analytical and numerical solution will be implemented in order to perform failure analysis of composite laminates under biaxial loading. There are many approaches developed in order to study the failure behaviour of composites materials. This paper reviews and proposes a research framework that employs analytical method, numerical method using MATLAB programming and finite element method using ANSYS 14.0 to investigate the failure behaviour of composite structures. The First Ply Failure (FPF) and Last Ply Failure (LPF) analysis will be performed to determine the failure curves. Finally, the failure curves obtained from both analytical and finite element simulation will be compared with results published from previous experiments.
Study on Shallow Embedded Column Foot of Reactive Powder Concrete Pole Mechanical Properties
Authors: Jia Yu Zhuo , Xu Jin Long
Published: October 2014

According to the existing specifications, design shallow embedded column foot of 500kV self-supporting partially prestressed reactive powder concrete pole, and perform numerical simulation of column foot stress under actual working condition by using finite element analysis software ANSYS WORKBENCH. The main research is capitals load-displacement curve, changes in stress along the height, plane section, the change in cross section of the stress problems between adjacent. The results show that shallow embedded column foot has good mechanical properties. It can well transmit larger axial pressure, pulling resistance and horizontal force generated by top load of RPC pole. Shallow embedded column foot in operation conditions higher safety level, can be used in 500kV transmission line.
Large Span Double Truss Lateral Stability Analysis
Authors: Jia Yu Zhuo , Wang Yi Xuan
Published: October 2014

The effects of large-span truss geometry of the double-plane stable orthogonal design. The use of finite element analysis software Midas double space truss were linear buckling analysis and nonlinear buckling analysis, research process and through its buckling load - examine issues outside of the structure of the plane stable displacement curve. For double truss draw some outside reference plane stability study conclusions.
The Pole Design of 500kV Centrifugal Concrete Filled Thin-Wall Steel Tubular Structures
Authors: Jia Yu Zhuo , Zhang Chuan Hui
Published: October 2014

According to the existing specifications, devise door type double pole of 500kV centrifugal concrete filled thin-wall steel tubular structures, and use the finite element analysis software ANSYS to simulate the pole.The results show that the mechanical performance of door type double pole is fine, can bear the maximum bending moment of roots of the pole well.The safety degree in the long term effect under the load is high,can be used in the 500kV transmission lines. In the technical and economic aspect, construction of centrifugal concrete filled thin-wall steel tubular structures pole is convenient,cover an area of an area small,economic and reasonable.
An Experimental Study on the Cutting Forces, Surface Roughness and the Hardness of Al 6061 in 1D and 2D Ultrasonic Assisted Turning
Authors: Nosouhi Reza , Behbahani Saeed , Amini Saeed , Khosrojerdi Mohammad Reza
Published: October 2014

The machinability of Al 6061 in 1D and 2D ultrasonic assisted turning (UAT) in terms of machining forces, surface roughness and hardness is investigated in this research. In order to perform the machining experiments, a 1D vibration tool and a 2D vibration tool are designed and manufactured. The cutting forces and surface roughness of the work-pieces in 1D UAT and 2D UAT are measured in different cutting speeds and feed rates and compared with that in conventional machining. To investigate the effect of the ultrasonic vibration on the material properties, hardness tests are performed on the work-piece material and micro-hardness tests are carried out on the chip specimens. The results showed that reduction in the cutting forces occurred in UAT. The results also showed that the surface roughness is exceled in UAT in comparison with the conventional machining. While no detectable effect of the ultrasonic vibration on the work-piece material could be observed, the chip micro-hardness experiments showed that the softening phenomenon occurred in UAT, which can be the cause of the force reduction in UAT.
Finite Element Analysis for Petiole’s Fracture of Mine-Used Explosion-Proof Axial Fan
Authors: Song Zhi Liang , Xie Da Cheng , Ou-Yang Ling Yu
Published: October 2014

The petiole’s fracture of mine-used explosion-proof axial fan has been analyzed by means of finite element analysis (FEA). The reasons of the petiole’s fracture have been found through the structural static and modal simulation calculates for the axial fan’s impeller mechanical system. The structural static analysis results show that the petiole has stress concentration problems, and the modal analysis results demonstrate that the 6th-order natural frequency of the impeller system (which is 83.258 Hz) is close to 5 times of the impeller’s rotation frequency (which is 16.667*5 = 83.335 Hz), therefore it has high risk of resonance for the impeller system. So we conclude that the petiole’s fracture may greatly caused by the stress concentration and the risk of resonance, which may cause the fatigue cracks produced, and the cracks may gradually expanded and eventually caused the petiole fractured. At last, two measures to prevent the fracture of petioles were proposed.
Calculation of Torsional Stiffness of Conductor and its Influence on the Stability of Motion
Authors: Cheng Zhi Hui , Zhang Chao
Published: October 2014

In galloping, reverse split wire plays an important role in. Through the study of split change sub conductor length of wire twisting motion estimation, the wire tension change caused by the torsion of sub conductors; besides considering some of the split wire torsion stiffness of the external factors, but also the influence of torsion wire tension change, caused by the conductor sag, line height worse, we deduced the general formula to calculate the new conductor spacer system torsional stiffness.
The Finite Element Analysis on the Compression Splicing Position of Strain Clamp in Guy Tower
Authors: Wang Zhang Qi , Li Jun , Yang Wen Gang , Cheng Yong Feng
Published: October 2014

Strain clamp is an important connection device in guy tower. If the quality of the compression splicing position is unsatisfied, strain clamp tends to be damaged which may lead to the final collapse of a guy tower as well as huge economic lost. In this paper, stress distribution on the compressible tube and guy cable is analyzed by FEM, and a large equivalent stress of guy cable is applied to the compression splicing position. During this process, a finite element model of strain clamp is established for guy cables at compression splicing position, problems of elastic-plastic and contracting are studied and the whole compressing process of compressible position is simulated. The guy cable cracks easily at the position of compressible tube’s port, the inner part of the compressible tube has a larger equivalent stress than outside.
Study on Impact Characteristics of CFRP Structural Member According to Stacking Conditions
Authors: Choi Ju Ho , Yang Yong Jun , Cha Cheon Seok , Yang In Young
Published: October 2014

CFRP (Carbon Fiber Reinforced Plastics) is an anisotropic material which is the most widely adapted lightweight structural member. CFRP of the advanced composite materials as structure materials for vehicles has a widely application in lightweight structural materials of air planes, ships and automobiles because of high strength and stiffness. The CFRP Square members were made of 8ply unidirectional prepreg sheets stacked at different angles and interface numbers. Based on the collapse characteristics of CFRP member, the collapse characteristics and energy absorption capability were analyzed. The impact collapse tests were carried out for each section member. The purpose is to examine experimentally absorption behavior and strength evaluation depending on changes in the stacking configuration when the CFRP Square member s with different stacking configuration is exposed to separate impact velocity.
Incremental Dynamic Analysis of Shape Memory Alloy Braced Steel Frames
Authors: Moradi Saber , Alam M. Shahria
Published: October 2014

Incremental Dynamic Analysis (IDA) is a technique to determine the overall seismic performance of structures under varied intensities of earthquakes. In this paper, the seismic performance of four-story steel braced frames equipped with superelastic Shape Memory Alloy (SMA) braces is assessed by performing IDA. The seismic response of SMA-braced frames was compared to that of corresponding Buckling-Restrained Braced Frames (BRBFs). Based on the results of this comparative study, the SMA-braced frames were generally effective in reducing maximum interstory drifts and permanent roof deformations. In addition, the SMA-braced frames demonstrated more uniform drift distribution over the height of the building. As the intensity of earthquake excitation increases, a higher response reduction can be expected for SMA-braced frames.
Analysis of Mechanical Properties between Sugarcane Bagasse/LDPE Composites versus Coconut Coir Wax/LDPE Hybrid Composites
Authors: Rassiah Kannan , Balakrishnan Paramananthan , Haron Kamal
Published: October 2014

Development of new natural fiber composite for a good characteristic is the focus of many studies, because of their cellulose contents make their properties more potential. However, the main challenge in the research on natural fiber/ polymer composites is their poor compatibility. Based on that, the comparison study by chemical treatment of sodium hydroxide (NaOH) method and adding wax has been explored in two different processes to improve the compatibility of the natural fiber surface. The sodium hydroxide (NaOH) treated sugarcane bagasse (SCB) and coconut coir wax (CCW) in low density polyethylene (LDPE) as a reinforced matrix in fact, will enhance the mechanical properties of the resulting composites. In this study, four different compositions of (90/2, 90/4, 90/6, 90/8), with additional of 2% of NaOH and 2-8 % wax with sugarcane bagasse (SCB) / coconut coir respectively were tested. The specimens were analyzed by different techniques such as tensile test, hardness test, impact test and scanning electron microscopy (SEM) according to ASTM standard. This research has shown that the presence of NaOH indicates higher tensile strength and impact strength compared to coconut coir wax (CCW). While for the young modulus and hardness test value shows coconut coir wax (CCW) has increased and improved. The morphological analysis was conducted to determine the effects of natural fiber bonding between the matrix materials for broken specimens after mechanical testing.
Preliminary Numerical Analysis of a Platform Structure
Authors: Sohaimi Asrul Khairi , Abdul Majeed Anwar P.P. , Mahmud Jamaluddin
Published: October 2014

Finite element analysis (FEA) has become an increasingly important tool in evaluating structural performance of platforms. This includes the use of this tool to perform strength, stability checks, optimisation of structural design upon subjected to design loads as well as to perform failure investigation of platforms upon subjected to special loading conditions such as impacts. Traditionally, small and medium enterprises utilises laboratory (physical) testing and heuristic experience to fabricate and test the platforms, nonetheless this approach is deemed too time consuming and cost demanding. Therefore, this study aims at reconstructing the actual design based on engineering drawings as well as performing stress analysis by means of a commercial FEA software package, ANSYS v14.0 by investigating the effects of two distinct loading impacts on a mild steel platform. The maximum stress and maximum displacement values obtained via the FEA simulation was then compared with values obtained via theoretical computation. The results obtained via the FEA simulation was found to be in good agreement with the exact solution. The present study is non-trivial as it contributes towards the knowledge in the design and optimisation of complex steel structures.
Determining the Energy-Optimal Base Position of Industrial Robots by Means of the Modelica Multi-Physics Language
Authors: Gadaleta Michele , Genovesi Andrea , Balugani Federico
Published: October 2014

A novel technique for determining the energy-optimal base position of common Industrial Robot (IR) is presented. At first, an energy-focused IR model is developed by means of the Modelica/Dymola simulation environment. Then, for a given IR task, a standard but efficient optimization technique is employed, which allows to determine the robot base position corresponding to the minimum energy consumption. A set of graphical maps is finally provided, which allows a rapid estimation of the energy demand along with the time required for the task completion.
Research on Fuzzy PID Controller for AC Permanent Magnet Synchronous Motor Servo System
Authors: Hu Hong , Cui Ya Xin
Published: October 2014

This paper studied the fuzzy PID method on controlling permanent magnet synchronous motor servo system. The servo control system consists of the S3C2410 and drive circuit, etc. A fuzzy PID controller is designed by combined fuzzy control with conventional PID control, Fuzzy inference rule of PID parameters is designed according to nonlinear and uncertainty of the PMSM servo system, which would result in changes of characteristic parameters of object or structure. Simulation results indicate that the fuzzy PID controller is superior to the conventional PID controller in dynamic stability performance.
Time-Temperature Effect for Preparation of SnO2 Nanostructures Using Carbon Assisted
Authors: Polsongkram Dheerachai , Chamninok Pattanasuk , Changsakul Suchaowadee , Sriputhorn Atipong , Pukird Supakorn
Published: October 2014

We studied the effect of time and temperature for preparation of SnO2 nanostructures by chemical vapor deposit methods. SnO2 nanostructures were synthesized using Sn powder with carbon charcoal as starting materials. The source materials and Si substrates were heated with various times, temperatures under atmosphere of nitrogen and oxygen. The synthesized products were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) techniques. The results showed the nanostructures of prepared products were very uniformly of SnO2 nanowires with diameter about 100-300 nm and length around more 1-2 μm depending on times and temperatures.
Dynamic Simulation Analysis of Transmission Line Tension Stringing
Authors: Kong Wei , Zhang Yu Bao , Peng Wei Lin
Published: October 2014

In this paper, the use of overhead ground wires as tension line of bearing cable .Using ANSYS and ADAMAS software ,To establish the dynamic model of power transmission line tension stringing,Considering the force of tension stringing process overhead bearing cable of ground wire. The study of tension stringing of transmission line show that the overhead ground wire as bearing cable of ground wire can meet the requirements of the tension line.
The Life Prediction of Transmission Tower Based on Multi-Scale Analysis
Authors: Liu Chun Cheng , He Zhao Wen , Pan Yu Jiang , Li Wen Qiang , Hou Shang Yu
Published: October 2014

In order to study the residual fatigue life of 500 kv transmission tower under load conditions, a multi-scale finite element model of transmission tower is established. By simulating time course of wind load, using Miner fatigue cumulative damage theory and linear S-N curve, the calculation method of transmission towers fatigue life is established. The research shows that the multi-scale model can better simulate the stress and strain state of the transmission tower, and can predict the remaining service life of the transmission tower .The research has important significance and application value for the safe operation of the transmission lines.
Analysis of a Fractured Lightning Rod on a Tower Structure at a Substation
Authors: Li Rui , Yu Hong Yun , Wang Liang , Wang Li Feng , Yuan Qun , Chen Qing Yin , Qian Miao , Hong Jing , Tian Cheng Man , Sheng Ye Hong
Published: October 2014

This paper analyzes a fractured lightning rod on a tower structure at a 500kV substation. By examining the residues of the rods, and utilizing simulation test and finite element analysis, the causes for this incident are discussed in detail, and a technical rationale is provided for preventative measures of incidents of this type.
The Glucose-Responsive Nanogel Based on Phenylboronic Acid
Authors: Zhao Li , Wang Li Yan , Gai Guang Qing
Published: October 2014

Diabetes mellitus, following cancer and cardiovascular disease, become one of the most serious diseases that threat to human health. The treatment of diabetes is imminent for the health of people. Thus, the developments of efficient insulin administration exhibit great practical significance. The glucose-responsive insulin delivery system (GRIDS) is developing rapidly which is expected to be a promising therapy approach to replace the frequent insulin injection administration. A novel glucose-responsive nanogel was conveniently prepared through one-pot copolymerization of pentaerythritol tetra (3-mercaptopropionate), poly (ethylene glycol) diacrylate, methoxyl poly (ethylene glycol) acrylate and N-acryloyl-3-aminophenylboronic acid. The successful incorporation of phenylboronic acid (PBA) in the nanogel endowed the nanogel high glucose sensitivity in phosphate buffer saline (PBS). Therefore, the PBA incorporated nanogel with high glucose-responsiveness and good biocompatibility may have great potential for self-regulated drug release
Semi-Active Control for Vibration of Transmission Tower-Line with MRD
Authors: Kong Wei , Tao Yun Fei , Men Shi Guang
Published: October 2014

Magneto-rheological (MR) damper is a semi-active control device, which takes advantage of both the reliability of passive devices and the adaptability of fully active control devices and is widely used on many kinds of machines and civil works. But there are some particular problems when the MRD is used on transmission tower-line system.This article is aimed to introduce the technological means to these problems such as :choose sant colony algorithm as the suitable semi-active control algorithm; consider adopting Self-Powered/Self-Sensing structure to Increased general OS stability;
Intrusion Detection for Universal Attack Mode Based on Linear Temporal Logic with Past Construct
Authors: Qiao Peng Zhe , Wang Yi Ran , Zhao Yan Ke
Published: October 2014

Compared with the intrusion detection based on pattern matching, the method which is based on model checking can detect the complex attacks. But all of the existing algorithms are only used to detect some specific types of attacks. To solve this problem, we firstly use the Linear Temporal Logic with Past Construct (LTLPC) formulae to set up formal sub-models for the five kinds of attackers, the four kinds of attack processes and the eight kinds of attack effects. According to their universal relationship and the semantic relation of variety of LTLPC operators, we obtain the above sub-models together, thus, the universal models described by LTLPC formulae for universal attacks are formed. On this base, we implement an intrusion detection method based on LTLPC for detecting all types of attacks. Compared with the existing methods, the detecting ability of the new method is more comprehensive.
Measurement System Analysis of VS Lite
Authors: Mustapha Ghazirah , Shafie M. Saiful Aizat , Yahaya Nur Hayati M. , Mahmud Jamaluddin
Published: October 2014

Virtual Sensei Lite (VS Lite) is an inexpensive user-friendly motion analysis system. As an alternative motion capture system, it is a must for VS Lite’s user to assess the accuracy of the measurement system capability. To date, such analysis to observe the reliability and accuracy of VS Lite has not been reported. Therefore, this study proposes a procedure for assessing the accuracy and capability of the Virtual Sensei Lite using ANOVA Gage Repeatability and Reproducibility (Gage R&R) designed experiments. In this procedure, a gage R&R study is conducted to obtain replicate measurements on nine parts by three operators. The total variation due to measurement error is then observed to identify the accuracy of measurement. The study able to demonstrate on the accuracy of VS Lite as the value of total variation due to measurement error is within 10%-30%.
A Novel Approach for Intrusion Detection Based on Model Checking Interval Temporal Logic with Past Construct
Authors: Qiao Peng Zhe , Zhu Wei Jun
Published: October 2014

Compared with the Intrusion Detection (ID) based on pattern matching, the model-checking-based methods can find the complex attacks. But their rates of missing report are still high. To solve this problem, we firstly use the Interval Temporal Logic with Past Construct (ITLPC) formulae to describe some signatures for network attacks. And then, we can use some automata to establish models of audit logs. On the basis of it, automata, i.e., attack models, and ITLPC formulae, i.e., signatures, constitute the two inputs of the ITLPC model checking algorithm. Therefore, a new model-checking-based ID algorithm is obtained by calling the ITLPC algorithm. Compared with the existing methods, the new method is more powerful, as shown in the experimental simulations.
Semi-Parametric Statistical Model for Extreme Value Statistical Models and Application in Automatic Control
Authors: Han Yu
Published: October 2014

The frequency that extreme events appear in the life is low,but once it appears,the impact will be significant; many scholars have conducted in depth research and found that statistical theory of extreme value. The theory of extreme statistics plays a more and more important role in many fields such as automatic control, assembly line etc. This paper,makes an in-depth research towards the characteristics and parameter estimation of the extreme value statistical models,as well as the application,mainly analyzes the Bayes parameter estimation method of extreme value distribution,the extreme value distribution theory and Copula function random vector model.
Uses of Glass in Architecture: Heat Losses of Buildings Based on Translucent Structures
Authors: Nikitin Yury , Murgul Vera , Vatin Nikolay , Pukhkal Viktor
Published: October 2014

At present time translucent structures have appeared to be the most crucial issues regarding building envelopes in relation to high heat losses in the cold periods of the year. Development of the methods to improve thermal properties of translucent structures is considered to be an up-to-date issue. Heat losses of exhibition halls with varied dimensions ratio and energy consumption of heating systems have been determined for the case of the city of Saint-Petersburg (Russia)
Autonomous Systems of Solar Energy Supply under the Weather Conditions of Montenegro
Authors: Murgul Vera , Vatin Nikolay , Aronova Ekaterina
Published: October 2014

The article considers the ways of solar photovoltaic installation into a number of electrical systems. The optimization of the parameters of such systems, based on the example of an independent consumer (Nehaj fortress, Montenegro), has been carried out. The configuration of systems which are based on the results of both calculations, using one energy source (solar/diesel plant) and using a combination, is proposed in the article. The capital cost of the equipment has been estimated together with the cost of maintenance and parts replacement as well as the total discounted costs over the operation of the system.
Fabrication and Evaluation of Tensile Properties of Kenaf-Flax Hybrid Composite
Authors: Srinivasan V.S. , Rajendra Boopathy S , Vijaya Ramnath B.
Published: October 2014

With the upcoming difficulties the need for environmental friendly, biodegradable material plays vital role in automotive and aero space applications. This necessitates to innovate new materials like composites and smart materials. In this paper, the Flax and Kenaf fibres are used as reinforcement to form hybrid composite. The tensile properties of hybrid composites are compared with single fibre composites. The result shows hybridization have more impact on enhanced tensile property. Hand layup technique is used in this work to prepare composite specimens. Fiber distributions,crack propagation and shearing styles analysed using the Scanning electron Microscope (SEM) images of the tested specimens.
Research on Industrial Exhibitions Architecture
Authors: Nikitin Yury , Goryunov Vasiliy , Murgul Vera , Vatin Nikolay
Published: October 2014

All-Russian and regional exhibition architecture in the second half of the 19th century through the early 20th century had varied distinct differences in style and design. Temporality of exhibition architecture in those days contributed to a variety of experiments made for pavilions in the context of styles and structures. There was a high demand for the Russian style to be applied for pavilions both in Russia and abroad. First search and application experience in respect to the modern art principles are connected with exhibition architecture. These experiments in the national architecture and art are of a high interest. Neo-classicism was applied in exhibition architecture in the early 20th century to a large extent. The exhibitions of the early 20th century appeared to be special ‘style workshops’. Organizers of certain exhibitions tried to keep uniformity of style of basic constructions. The major merit of exhibition architecture is that it contributed to the transition from eclecticism to a new style on the cusp of the 19th and beginning of the 20th centuries.
Enumeration of System Efficiency into Tariff of Renewable Energy Objects
Authors: Elistratov Victor , Kudryasheva Irina , Miroshnikova Julia
Published: October 2014

The article is about the role of renewable energy objects such as pumped storage power plants (PSPP) within energy systems and their status on energy markets in Russian Federation and abroad. Problems and weakness of acting methods of tariff estimation are measured; the necessity of changings in tariff policy is emphasized. Article describes results of approbation of methodology for estimating of tariff bonuses, which are proved by the system impact of PSPP in regimes for maintenance of system reliability. Significant improvement of the investment attractiveness of PSPP from bonuses for system efficiency is shown.
Double Skin Facades in Energy Efficient Design
Authors: Penić Milja , Vatin Nikolay , Murgul Vera
Published: October 2014

Double skin facade is one of the possible approaches to bioclimatic design. Bright architectural expression is combined with lots of potential natural heating and ventilation of the internal space of buildings. Double skin facade considered as an element of building heating, ventilation, or, finally, as an element of conditioning in the building. The article provides a classification of Double skin facade, analyzes the advantages and disadvantages Double skin facade.
The Steel Reinforced Concrete Structure in Main Plant for Heat Supply
Authors: Xiao Qi , Wang Qian Wei
Published: October 2014

As one of the forms of composite structure system,the steel reinforced concrete(SRC) frame structure has the advantages of high carrying capacity and excellent elastic - plastic.The SRC has been widely used in high-rise structures and bridges. Meanwhile, it has promising application prospects in industrial plant construction. However, there are not many researches on the entity SRC structure in China at present, and many issues need to be explored. In this paper, we will give suggestions of application in the SRC industrial main plant , during designing of SRC frame structure in Daqing city, Heilongjiang province.
Finite Element Analysis of Concrete Filled Double Skin Steel Tubes for Wind Turbine Tower
Authors: Kong Wei , Wang Hong Liang , Cai Ying
Published: October 2014

In order to save the steel consumption,ensure the better economy of wind turbine tower,this paper designeda new concrete filled double skin steel tube for wind turbine tower,based on the parameters of 1. 5 MW wind turbine tower.A three-dimensional finite element model of wind turbine tower was built by using the finite element software ANSYS,then the static strength analysis and modal analysis were carried out,in which the stress and displacement at the top of the tower were calculated under three kinds of working conditions: normal operation with rated wind speed,normal operation with cutout wind speed and shutdown under extreme wind conditions,the natural frequency and mode shapes of the tower were obtained as well. The results show that the tower does not resonate with blades,and its structure can meet the strength and stiffness requirements of engineering.
Security Design System of Prison Architecture Based on New Materials
Authors: Lin Wang
Published: October 2014

This paper discusses empirical findings and theories about prison architecture security system and security fence material. As advanced security systems and high quality materials became increasingly significant for prison architecture. The prison insecurity fence design and lag behind materials consume use results in threat of jail safety, which implies that scholar focus on such security design system is necessary. Few people, therefore, doubt the value of new building materials and financial theory to justify prison security system as enhance safeguarding measure. Most scholars of penology promoted consensus on application of new materials can enhance the performance of prison fences, which focus on the security aspects of prison architecture, and this is case studies on the role of security design system and new materials reuse in prison architecture, solutions for make security sustainable development in a national prison system. Thus, there is a continuing need to carry out well-designed research on this question as improve the safety measures. Conclusions and directions for further research are provided.
Finite Element Analysis for Ladle Apparatus of Casting Using Free-Mesh Method
Authors: Lee Joon Seong , Jo Gye Hyeon
Published: October 2014

This paper describes a meshless of element-free method based on fuzzy knowledge processing. Node is generated if its distance from existing node points is similar to the node spacing function at the point. The node spacing function is well controlled by the fuzzy knowledge processing. Practical performance of the present system is demonstrated through ladle apparatus of casting solutions.
Application of Carbon Fiber Reinforced Plastic to Automotive Seat Frames
Authors: Lee Kwang Ju , Choi Joon Hyeok , Seon Seok Woon
Published: October 2014

The purpose of this paper is to develop a lightweight automotive seat back frame structure using CFRP (Carbon Fiber Reinforced Plastic). The shape of CFRP seat back frame was determined so that its manufacturing could be performed in a single process without additional fastening. Three different kinds of analyses were performed to confirm that CFRP seat frame could satisfy FMVSS (Federal Motor Vehicle Safely Standards) requirements. The results of finite element analyses showed that its maximum stresses were 51.1 to 95.5 % of those of steel seat frame structure. Its mass was 56.2% of that of steel seat back frame. CFRP seat frame can provide better fuel economy as well as improved safety.
Internal Force Decoupling Control of Hyper-Redundant Shaking Table Based on Stiffness Matrix
Authors: Wei Wei , Yang Zhi Dong , Han Jun Wei , Gao Ting
Published: October 2014

A novel internal force decoupling control strategy of hyper-redundant shaking table based on stiffness matrix is proposed in this paper. The linear models of electro-hydraulic servo system and mechanical system are built by considering the shaking table moving in a small range around the zero point. Internal forces are given through a transformation of cylinder forces which can be acquired from the pressure sensors. By meshing top platform of the shaking table in different directions, the stiffness matrix between the redundancy displacements and internal forces are given through dynamics equations including inertia and shear parts. The IFDC controller is designed to feedback the redundancy displacement caused by internal forces to the input current of the servovalve. Simulation results show that the proposed method is capable to reduce internal forces effectively.
A Model for Planning of Generalized Power Source in Active Distribution Network Based on the Glowworm Swarm Optimization Algorithm
Authors: Pan Chao , Meng Tao , Yin Hang , Su Kuo
Published: October 2014

The problem of generalized power sources planning in distribution system is researched. Meanwhile, the active and reactive power of generalized power source are treated as control variables. In this paper a generalized index for probabilistic optimal planning is presented. Based on this, a new probabilistic assessment model being setted up, a new glowworm swarm optimization algorithm is used to optimize the generalized power source. Finally, the model and algorithm are tested and improved by modified IEEE 33-node example. The calculation result shows that the proposed model and algorithm are feasible and superior.
Simulation of SVPWM in PSCAD/EMTDC
Authors: Deng Yuan , Gao Yang
Published: October 2014

There is not a component which can implement the algorithm of space vector pulse width modulation (SVPWM) in the PSCAD/EMTDC. The principle of SVPWM is explained firstly. Then the creating process of the self-defined component and the program flowchart of SVPWM are presented. The algorithms of the subroutine are also discussed in detail. Finally, the simulation is performed by using the self-defined component in the system. Simulation results demonstrate the correctness and validity of the inverter and self-defined component.
Study of System Stability Based on the Combination of Low Voltage Protection and Security Automatic Device
Authors: Liu San Ming , Wang Zhi Jie , Lin Cheng Ying , Wang Hong , Chen Shu Ting
Published: October 2014

Large disturbance stability of the system was greatly affected by the way of a lot of wind power centralized access to high voltage transmission network. We could use the traditional operation control scheme of controlling the wind farm and the nearby generator system operation output, but the wind farm and conventional power plant's interests would be seriously affected. Therefore, this paper put forward the control strategy by using the combination of low voltage protection and security automatic device. Large disturbance stability level could reach or close to the level before the wind, so as to minimize the impact of wind power integration on large disturbance stability of power system.
The Electrical Properties and Impedance Analysis of ZnO Varistors Doped with Different Cu2O Contents
Authors: Fan Ji Wei , Zhao Hui Jun , Zhang Xiao Li
Published: October 2014

The Cu2O addition deteriorates the electrical properties of ZnO varistors, which is a good agreement with similar findings on Ag2O additions. The best fitted impedance analysis reveals that the Cu2O addition increases grain resistance and lowers the grain boundary resistance, results in low nonlinearity and higher leakage current of ZnO varistors.
The Setting Calculation of the Current Increment Protection of the Traction Power Supply System for High-Speed Railways
Authors: Zhao Chen , Gao Shi Bin
Published: October 2014

In order to study deeply the cause of mal-operation of the current increment protection and then redo the setting calculation, the all-parallel AT traction network model and the simulation model of Electric Multiple Units (EMU) are established. Using the model that has been established and Simulink simulation tool, the situation while the EMU is being started, passing neutral section or the traction network has grounding fault with interruption was simulated. The simulation result show that the current increment when the EMU starting is significantly different from that situation when fault occurring. While the situation when the EMU passing neutral section is the opposite. So we can draw a conclusion that the current increment protection will not appear mal-operation when the EMU starting and when passing neutral section may appear mal-operation. Finally, the current increment protection setting principle has been improved, and its feasibility has been verified.
A Comparative Study between Welding and High-Tensile Vertical Bolt Methods in PHC Pile Coupling Work
Authors: Shin Yoon Seok , Kim Gwang Hee
Published: October 2014

Few studies have been conducted on the constructability or economic feasibility of the coupling of Pre-tensioned Spun High Strength Concrete (hereinafter PHC pile). For this reason, before applying it to actual construction sites, an analysis of constructability and economic feasibility is necessary. Therefore, this study aims to compare the welding method with the high-tension vertical bolt method. It is found that the use of the high-tension vertical bolt method can reduce expenses by 25 percent on average compared with the welding method.
Experimental Study on the Effect of Road Rollers Construction Vibration
Authors: Chen Fa Ben
Published: October 2014

Rollers are widely used in the construction of infrastructure; the influence of vibratory on surrounding environment caused by roller in construction is increasingly prominent. In order to solve this problem, a monitoring experiment was conducted in a compacted subgrade construction site to show how the vibratory of roller impact on surrounding environmental. Through the analysis of compacted subgrade monitoring data show that the peak fast decline rapidly with distance attenuation, the prediction formula is: a = 1657.85 * R ^ (-1.1), Based on the impact of compacted subgrade vibration velocity, frequency, and duration on the surrounding buildings is analyzed and found that the vibration velocity and frequency are less impact on the housing, but the duration of the construction will have an impact. Lastly, from Z vibration level and seismic intensity angle, the effects of vibration on personal feelings and building structures caused by vibration acceleration is analyzed. Furthermore, the way of excavating vibration attenuation ditch to control effect of vibration is proposed to the greatest impact of vibration on the residential buildings.
Discuss on Key Techniques of Salvage of Foundation Pit
Authors: Wu Xin Xing , Cheng Qun , Ye Hai Long
Published: October 2014

With regards to the foundation pit problems our company encountered in several excavation, a brief introduction and analysis are made, and the corresponding innovative solutions are elaborated so as to provide a reference for High-rise building deep excavation design, construction and emergency treatment scheme.
The Study on the Cathodic Protection Effect of the ICCP Anodes with Exposed Conditions
Authors: Jeong Jin A , Jin Chung Kuk
Published: October 2014

This paper presents the results of the effects of anodes for impressed current cathodic protection (ICCP) system on reinforced concrete. Experimental tests were carried out on reinforced concrete specimens with 3 different kinds of commercial anodes that are used for ICCP in order for comparative study. Results have shown that the type of anodes is irrelevant to the effectiveness of cathodic protection. CP current similarly flowed to the anodes regardless of anode types in seawater condition. In addition, current was much higher in seawater condition than freshwater and air condition. The results show that titanium rod anode was slightly more effective in fresh water, and titanium mesh anode showed a better performance in atmospheric condition. The potential drop caused by concrete resistance in atmospheric condition should be considered at depolarization potential measurement.
Service Selection Based on Rule and Statistics Model in WoT Smart Home
Authors: Wei Dan , Zhang Chun Hong , Zhu Xin Ning
Published: October 2014

As the development of WoT(Web of Things), a large mount of services emerge. How to make full use of these services is a hot research area nowadays. This paper focuses on making these services more valuable in WoT Smart Home scenario. In this paper, we propose a model called service selection model based on rule and statistics into WoT Smart Home scenario. It is a combination of rule model and statistics model. It not only automatizes the service selection process by adopting statistics algorithm, but also dramatically improves the accuracy of this process by combining rule and statistics. Further more, it saves efforts of the annotation of service rules greatly. We carry out some experiments to verify the efficiency of this model by comparing with rule model and statistics respectively. The results show that the combination model can efficiently and precisely select services.