bluuebunny/crossref_metadata_2025 huggingface dataset:
Numerical Analysis of Bi-Adhesive Boded Single Lap Composite Joint with Mechanics Analysis
Authors: You Min , Wang Peng , Yu Hai Zhou , Li Mei , Zhao Ya Lan
Published: March 2013

The effect of dual adhesives with different length ratio on the stress distributed in adhesively bonded single lap steel joint was investigated using elasto-plastic finite element method (FEM). The results from the numerical simulation showed that the peak stress along the bondline moves from the ends of the overlap to the middle part of lap zone. Compared with the results from the mono-adhesive system, appropriate bond-length ratios is beneficial to optimize the stress distribution and it is 0.4 for bi-adhesive bonded single lap composite joint.
Fuel Leaking Analysis of Fuel Tank by Projectiles Impact with Mechanical Properties of Projectiles
Authors: Cai Hai Liang , Song Bi Feng , Pei Yang , Shi Shuai
Published: March 2013

For making sure the dry bay ignition and fire, it’s necessary to calculate the number and the sizes of the droplets and determine the mass flow rate of the fuel induced by high-speed impact and penetration of a rigid projectile into fuel tank. An analytical model is founded and the method for calculating the initial leaking velocity of the fuel is determined. It gives the equation for calculating the drop size distributions of fuel and the Sauter mean diameter (SMD) of droplets, through the Maximum Entropy Theory and the conservation for mass. Using the Harmon’s equation for SMD,the fuel droplets SMD can be calculated. Results shows that the initial leaking velocity of the fuel is about linearly increasing with the velocity of the projectile, the SMD of fuel droplets increases with the hole size of the fuel tank which induced by the penetration of the projectile and linearly decreases with the velocity of the projectile. The results can be used for the ignition and fire analysis of the dry bay adjacent to fuel tanks.
Free Vibration Analysis of Composite Wings Using Differential Quadrature Method with Mechanical Properties
Authors: Xiao Yan Ping , Yang Yi Ren , Qian Yu
Published: March 2013

In this study, the natural frequencies of composite wings are investigated using the differential quadrature method (DQM) with Mechanical Properties. DQM is an efficient discretization technique for obtaining accurate numerical solutions to initial and/or boundary value problems using a considerably small number of grid points. In this way, a theoretical DQM model for the laminated composite beam has been developed. Some of the results obtained from DQM are compared with the results obtained in the literature. It has been seen that all of the results considered are very close to each other. It is also been concluded that the bending-torsional coupling rigidity of the composite beam has great and different influence on the first three natural frequencies.
Common Failure Analysis of Diesel Engine Fuel Supply System Based on Mechanical Properties
Authors: Shi Hong Xia , Wang Gui Qiang , Liu You , Zhou Xian Jiang
Published: March 2013

The performance of diesel’s fuel-supply system is the key to ensuring the normal operation of diesel and there are many kinds of causes to the same fault phenomenon. In order to ensure the sound performance of the diesel, the fuel-supply system of diesel is made research of as the main object. The components of the fuel-supply system, common fault of the components and the fault-detection methods are analyzed. What’s more, the common fault phenomenon and fault-elimination methods are further analyzed. Emergent treatment to system fault is set forth so as to improve the efficiency in the process of equipment maintenance, reduce the time consumption of maintenance and finally achieve the purpose of reducing costs.
Research on Movement Stability of Robotic Arm Driven by Antagonistic Pneumatic Artificial Muscle with Mechanical Properties
Authors: Zhu Jun Xian , Wang Yu , Tong He Ting
Published: March 2013

This paper presents a method how to implement stable rotation of an 1D robotic arm driven by antagonistic pneumatic artificial muscles (PAM) based on SIMULINK platform. Through simulation analysis, the optimal values of the torque from tensile difference of PAM, damping coefficient and rotational inertia were determined to ensure that the robotic arm can smoothly turn from starting point to target one inside an limited interval of time. The results of the study provide a useful reference for the rational design of mechanical characteristics and structure features of the dynamic system. And they also provide more ideal system parameters for successive control of the system.
Semantic Representation of Space Device and Material for Remote Sensing Satellite
Authors: Jiang Hao , Sun Heng , Massawe Richard Happson Joseph
Published: March 2013

Nowadays, with the significant application of remote sensing satellite in military and civil use, how to intelligentize space devices and materials has become a huge challenge. Traditional retrieval methods usually focus on the optical properties of the devices and materials and lack in semantic description. Therefore, a semantic-based query method of remote sensing data is proposed in this paper. With the ontology, the intelligent mechanism is used to infer complex interrelationships among the data. Inference results then are put forward to prove that our approach is effective.
Research on Expansion Technique of Lateral Supporting Structure in Explosive Neutralization System Based on Mechanical Mechanics
Authors: Hu Yang , Zhang Han
Published: March 2013

This paper is focused on the lateral supporting structure of the explosive neutralization system, using the massive gas produced by double base propellant burning in an instance as the expanding power of the lateral supporting structure, which drive the structure to expand smoothly due to the prescribed requirements. In order to accomplish such a complicated physical and chemical process, we choose proper double base propellant and analyses the theory of the burning of double base propellant, build the model instant burning; then calculate parameters such as the force of push, expansion time, make a prototype based on theoretical calculation and make a plan of the experiment. The results of the experiment indicate that the reliability and security of the double base propellant, which is the expanding power of the structure, and that the expanding time of the structure basically tally with the theoretical calculation results.
Kinematic Analysis and Simulation of a Novel Continuum Robot for Search and Rescue
Authors: Meng Guang Zhu , Sun Ling Yu , Zhang Ming Lu , Meng Xian Chun , Wang Hong Mei
Published: March 2013

In this paper, a novel continuum robot for search and rescue is presented. A detailed formulation of fundamentally new kinematic model is then introduced. Kinematic analysis adopt product of exponentials formula, compare with conventional D-H method, this method is concise and simplicity. Finally, the forward kinematic simulation is completed by Matlab software.
Numerical Simulation of Unsteady Aerodynamic Loads over an Aerofoil in Transonic Flow
Authors: Qian Yu , Yang Jun Li , Xiang Xiao Jun , Chen Ming Qiang
Published: March 2013

The unsteady aerodynamic loads are the basic of the aeroelasitc. This paper focuses on the computation of the unsteady aerodynamic loads for forced periodic motions under high subsonic Mach numbers. The flow is modeled using the Euler equations and an unsteady time-domain solver is used for the computation of aerodynamic loads for forced periodic motions. The Euler equations are discretized on curvilinear multi-block body conforming girds using a cell-centred finite volume method. The implicit dual-time method proposed by Jameson is used for time-accurate calculations. Rigid body motions were treated by moving the mesh rigidly in response to the applied sinusoidal motion. For NACA 0012 airfoil, a validation of the unsteady aerodynamics loads is first considered. Furthermore, a study for understanding the influence of motion parameters, the Mach number, mean angle of incidence, reduced frequency, amplitude, was also conducted. A reverse of the trend of hysteretic loops can be observed with the increasing of the Mach number. Nonlinear hysteretic loops are turned up when increasing the amplitude and the reduced frequency during the applied pitch sinusoidal motion.
PLM-Oriented Interactive 3D Virtual Exhibition of Special Vehicle
Authors: Liu Sheng , Liu Shu Mei , Li Xia , Liao Qiu Hui , Wang Lei
Published: March 2013

Analyzes some usual technologies and design tools that support virtual exhibition of product, the dynamic interactive 3D browsing method in the PLM system is proposed .On the web browser, the 3D-model and 2D-drawing are expressed by the ActiveX control, user can rotate ,pan and zoom the 2D and 3D documents. The online dimension drive is realized by calling secondary development interface of 3D-CAD software .Finally, The System of 3-D interactive issue oriented is developed.
Study on the Online Detecting Technology for Partial Discharge of Power Equipment with Mechanical Properties
Authors: Chen Guo Jin , Xu Ming , Liu Tin Tin , Ni Jing , Xie Dong , Zhang Yan Ping
Published: March 2013

From the physical characteristics of the partial discharge, this paper analyzed the UHF signal’s characteristic parameters for the partial discharge of the power transmission equipment, used synthetically the detecting technology which combines the ultra high frequency (UHF) and the acoustic emission (AE), and established the online monitoring system for the partial discharge of the power equipment. On the premise ensuring the integrity of the partial discharge signal, the acquisition, amplification, analysis and storage of the partial discharge signal are implemented. The case-based reasoning technology determines the fault type and fault degree of the partial discharge to make the accurate judgment for the operational state of the equipment and improve the intelligence level and the operational reliability for the state diagnosis of the power equipment. The structural optimization design of the power transformer makes the no-load loss down by 50%, and the load loss down by 15%. That improves greatly the mechanical and electrical properties of the transformer.
Research on Electronic Expansion Valve Opening Mechanical Properties of Multi-Link Inverter Air-Con Based on Neural Network
Authors: Guo Li Hui , Hu Wan Qiang
Published: March 2013

The effects are unsatisfactory to adopt plain control mode for air-con refrigerating system with large lagging and nonlinearit features. The mechanical properties of electronic expansion valve are not sensible. In this article, BP-PID controller is adopted to control the system’s electronic expansion valve opening mechanical properties. The controller is designed. The experiment results show the controller is simple and effective, and well fulfills the users’ actual needs.
Application of Fuzzy Neural Network to Fault Diagnosis of Sensor with Mechanical Properties in Nuclear Power Plant
Authors: Li Jin Yang , Xia Hong
Published: March 2013

In view of the sensor fault in nuclear power plant, it puts forward a method to fault diagnosis of sensor with mechanical properties based on fuzzy neural network. The method would be fuzzy logic control combined with neural network. It adjusted and corrected membership function parameters and network weights with back propagation algorithm. After the completion of fuzzy neural network training, it could get the credibility of sensor with mechanical properties real time. Taking pressurizer water-level sensor as the case, the simulation experiment results showed that the method is valid for the fault diagnosis of sensor with mechanical properties in nuclear power plant.
Intelligent Control of Valve-Controlled Electro-Hydraulic System in Erecting Device Based on Mechanical Mechanics
Authors: Deng Biao , Su Wen Bin , Song Bo Shi , Guo Qin Yang , Liu Chong Rui
Published: March 2013

According to the fast and stable requirements of erecting device, the characteristic of dynamics was analyzed and several common law of motion curve was discussed. The erecting curve was optimized and different stress and impact problems of Multi-stage Cylinder were studied to establish the system model. Fuzzy PID control algorithm was used to co-simulate in erecting process to optimize the control parameters, which can weaken impact when the working parts was in place in erecting process. The experiment shows that the erecting time is about 50s and collision is decreased when the Multi-stage Cylinder is stickled out in grade change to reduce hydraulic impact. So it may be have an important guidance and application value in engineering.
Finite Element Analysis and Design of Cylinder Shell Resonant Density Meter Based on Mechanical Vibration and Fluid-Solid Interaction
Authors: Sui Xiu Mei , Sui Xiu Wu , Ren Da Lin
Published: March 2013

In order to solve the problem of choosing vibration mode of the cylinder shell resonating density meter, this paper analysis the dynamics of the resonator by ANSYS. The modal analysis result shows that the transverse n=2 and n=3 all meet the requirement, the fluid-structure interaction result shows that the transverse n=2 is more sensitive to the changing of fuel density than n=3. Final analysis of the influence by temperature and pressure on the vibration frequency shows that the influence by pressure is very little which can be omitted, but the influence by temperature is remarkable and needs to be compensated. The conclusions and methods of finite element analysis can be used for resonant liquid density meter design.
Four Synchronous Transfer Mode of USB in Mechanical Engineering
Authors: Liu Xue Peng , Zhao Dong Mei
Published: March 2013

The basic knowledge of USB in mechanical engineering is mainly introduced. The data acquisition is convenient and fast. The problem the synchronicity of the data collection is solved. USB transfer has the Characteristics of high speed, high precision, the multiple synchronous collection and real-time processing. Four feasible transfer software schemes are proposed
The Design of Cutting Tools Database in Mechanical Engineering
Authors: Liu Xue Peng , Zhao Dong Mei
Published: March 2013

The standardization of the tools cutting parameter in NC machine is studied. The organization scheme of tools information in database, tools code, the intelligent selection of tools and machine parameter are analyzed. Tools database are built up
Synthesis and Self-Assemble Behavior of Block Copolymerization of Vinyl Acetate and N-Vinylacetamide
Authors: Lou Yu , Shi Dong Jian , Dong Wei Fu , Chen Ming Qing
Published: March 2013

Polymerizations of VAc was carried out using AIBN as the initiator and DIP as the MADIX agent precursor. Then, block copolymer PVAc-b-PNVA had been synthesized by RAFT radical polymerization in the presence of PVAc-DIP as macro CTA. The length of blocks could be tuned by changing the molar ratio of NVA and VAc. Block copolymer PVAc-b-PNVA self-assembled into micelles in solution, and underwent microphase separation in bulk state.
The Effect of Oxygen in ∑3(114) CulnSe2 Grain Boundary
Authors: Feng Chun Bao , Nie Jin Lan , Zu Xiao Tao
Published: March 2013

Using density functional theory calculation, we show that oxygen (O) exhibits an interesting effect in CuInSe2. The Se atoms with dangling bonds in a Se-rich ∑3 (114) grain boundary (GB) create deep gap states due to strong interaction between Se atoms. However, when such a Se atom is substituted by an O atom, due to their smaller atomic size and stronger electronegativity, the deep gap states are shifted to lower energy regions close or even below the top of the valence band, which is beneficial to CuInSe2 solar cell.
Microstructure and Electrical Properties of MnO2-Doped ZnO-Pr6O11-Based Varistor Ceramics
Authors: Han Xiao Xing , Huang Si Chao , Liang Ying , Shi Yu
Published: March 2013

The effect of 0~1mol% MnO2 doping on microstructure and electrical properties of the Zn–Pr–Co–Cr–Mn-based varistor ceramics was investigated by means of SEM, XRD and standard current-voltage property tests. The increase of MnO2 doping level strongly decreased the relative density (99%-91.5%) by the effect of pining of Pr0.96Mn0.98 2O3. The nonlinear coefficient increased from 17.4 for MnO2-undoped sample to 54 for MnO2-doped sample up to 0.5 mol%, whereas the further doping resulted in decrease.
Tribological Properties of the Overbased Calcium Sulfonate Complex Greases Containing Different Lubricant Additives
Authors: Qiao Peng , Xia Yan Qiu , Ge Xiang Yu
Published: March 2013

Overbased calcium sulfonate complex greases have excellent friction and wear properties and have been widely used in metallurgy and mining equipment. The effects and tribological performance of molybdenum dialkydithiocarbamate (MoDTC) and ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium bis (triﬂuoromethylsulfonyl) imide ([C2OHMim][NTf2]), 1-(2-hydroxyethyl)-3-hexylimidazolium bis (triﬂuoromethylsulfonyl) imide ([C2OHHim][NTf2s]), added in overbased calcium sulfonate complex grease as additives were investigated by using reciprocating ball-on-disk sliding friction tester. The results showed that the two kinds of additives with a certain range of concentration could improve the tribological properties of greases.
Tribology Performance of Compound Synthetic Lubricant Containing MoDTC
Authors: Shu Zong Ying , Xia Yan Qiu , Ge Xiang Yu
Published: March 2013

In this paper, dialkyl dithiocarbamate molybdenum (MoDTC) as a friction reducing additive was used for compound synthetic lubricant. The tribological properties of MoDTC were investigated using the MFT-R 4000-high-speed reciprocating friction and wear tester. And the results showed that the PAO +10wt% PEG +0.3wt% MoDTC have the best friction reducing and anti-wear properties.
Optical Spectrum Analysis of CuInSe2 Materials Applied in Solar Cell
Authors: Wang Xue Wen , Deng Zhou Hu , Zhang Yuan
Published: March 2013

Since CuInSe2 (commonly called as CIS) materials has become one of most important photovoltaic materials, they are investigated with optical spectroscopies in this paper. The crystal structure, surface microstructure morphology and composition of the samples are analyzed in XRD and SEM with EDX, and the surface electronic state and optical properties of the samples are characterized in X-ray photoelectron spectroscopy (XPS) and Ultraviolet-visible Spectrum instruments. The results show that CIS phase is very uniform, some impurity phases appear in the samples， the atomic distributing percentages of the surfaces of bulk samples are very consistent in the composition ratio forming the crystal phases of the samples, and the atomic electrons are more active than ones in the relevant elements. Furthermore, the thin film of the sample has high solar energy absorptivity, and is suitable for to be manufactured as solar cell.
New Type of Industrial Floors with Secondary Raw Materials
Authors: Tůmová Eva , Drochytka Rostislav
Published: March 2013

Dry shake screeds are characterized by high durability. It is a modern way of improving the mechanical and aesthetic properties of concrete floor surfaces. It is the so-called “wet-on-wet” method – i.e. a method of applying cement mixtures for floor screed. Stirred cement mixture is spread, in the prescribed thickness, onto the setting fresh cement mixture surface that was arranged and compacted before.
Parameter Optimization in the Simulation Package of Hydraulic System
Authors: Xu Li , Lu Qian Qian , Shao Wei
Published: March 2013

The paper discusses the optimization technology and algorithm features in the hydraulic system simulation. It presents the realization in the package. Detailed description of the principle and development is shown, focused on parameter optimization by parameter error integration and genetic algorithm which are realized in the optimization module. The application is an example of hydraulic system of injection molding machine which showed the efficiency and capacity of the module. The comparison between curves of simulation and experiment indicated the achievements, to find optimized hydraulic parameters efficiently and quickly so as to shorten the design cycle.
The System Architecture Design about Test Platform of Battery Management System
Authors: Zeng Jie , Sun Jia Jia , Ma Yuan
Published: March 2013

The battery management technology is one of the key technologies in new energy battery promotion and application, and it is related to the security and life of the battery. For the convenience of a battery management system scale production in the future, a kind of test platform architecture is proposed according to the developed battery management system. The architecture includes a battery management system test platform and the tested battery management system, the battery management system test platform consists of the battery simulation signal source and the man-machine interface of the host computer. The required various battery condition simulation signals produced by the battery simulation signal source are controlled by the calibration parameters of the host computer; The man-machine interface is completed based on LabVIEW development environment, which is used to control the output of the battery simulation signal source, meanwhile it can collect, analyze and process operating parameters from the tested battery management system and diagnose self, thereby the test results and evaluation are given. The test results show that the test platform can achieve the calibration control function of battery simulation signal source as well as the test function to the battery management system, which has good real-time performance and reliability, and has certain significance to the industrialization of the battery management system.
Analysis and Research of Humanoid Robot Facial Expression Behavior Simulations
Authors: Zhang Yu , Wang Xiao Jiao
Published: March 2013

By analyzing the motion of eyes, eyebrows, mouth, and lower jaw in typical facial expressions, it obtains the motion scopes of each organ. Base on the humanoid head mechanism design, a robot model is created with existing software, which blends head mechanism model and facial elastomeric model. It simulates four typical facial expressions of the humanoid robot (happiness, sadness, surprise, anger) by using finite element method to analysis and simulation; and discuses under different displacement load, the degree of realizing facial expressions. It provided data for humanoid robot to be farther designed and developed.
Novel Approach against Reverse Bandwagon Profile Inject Attack in Recommender Systems
Authors: Liao Xiao Hong , Chen Ping Hua
Published: March 2013

Due to the simplicity and high recommending quality, collaborative filtering algorithms are the most successful recommender techniques and wildly used in e-commerce recommender systems. However, such systems are vulnerable to profile inject attack which is employed by inserting biased profiles into systems in order to influence the recommendations. In this paper, we propose a novel method against reverse bandwagon profile inject attack model. Our method is basing the standard collaborative filtering algorithms. Experiment results show that our method has better performance against reverse bandwagon attack model.
Research on Methods of Improving Platinum Resistance Sensor’s Temperature Measurement Precision
Authors: Chen Hai Xiu , Tang Hui Qiang , Li Yuan Yuan
Published: March 2013

Platinum resistance sensor is widely used in meteorological observation. In order to ensure the quality of temperature observation data, a number of experiments in different humidity, different working current, and in a constant temperature water tank and dry oven and other environments are completed with platinum resistance sensors. The experimental results are analyzed to investigate the influence factors of platinum resistance temperature measurement accuracy. The experiments can provide basis for objective evaluation of platinum resistance temperature sensor’s performance index, and for platinum resistance temperature sensor’s production, test, use and other areas, and can ensure quality of meteorological observation data.
Construction of the Mine Safety Knowledge Management Information Platform
Authors: Wang Wen Sheng , Sun Qian Ying , Dai Wei
Published: March 2013

This paper analyses the concepts and features of Agent, builds an architecture of the mine safety knowledge management information platform based on the Agent and a data-driven model which under the distributed network environment. It studies the functional demand of the platform, puts forward the functional frame of the platform and describes the function of related modules.
Due-Date Assignment on a Single Machine Scheduling Problem with Nonlinear Deterioration Function
Authors: Wu Hua Ping , Huang Min , Cho Vincent , Ip W.H. , Wang Xing Wei
Published: March 2013

The paper considers the due-date assignment problem with a non-linear deterioration in which the due dates are determined by the equal slack method. Here, the processing time of a job is defined by a non-linear function of total normal processing time of jobs in front of it in the sequence. The objective is to minimize the total tardiness penalties. According to the needs from the real world, the problem is divided into two cases, i.e., allowing with early jobs and no early jobs respectively. The related lemma, corollary and theorems for the problems are proposed and proved. At the same time, it shows that the problems in this paper can be solved in the polynomial times.
Modeling and Simulation of Petri Net in Iron-Making System
Authors: Yue You Jun , Yu Shui , Zhao Hui , Wang Hong Jun
Published: March 2013

The logistics system of iron-making is a very complex production system, and it is characterized by continuity and discreteness in combination. It is difficult to establish the model of the complex system for a long time. The model of Petri net can not only characterize the structure of complex system, but also can describe the dynamic behavior of it, these features make the Petri net a wonderful tool to build the model of production process. Based on that, this paper sets up the model of the logistics system of iron-making by the Petri net. And then simulate this model by Stateflow which is an ideal tool of simulation. All these works is the foundation for the further analyzing of the logistics system.
Decay Characteristic of Fiber Bragg Grating and Fabrication of High Temperature Resistance Grating Temperature Sensor
Authors: Li Jie Yan , Zhang Dong Sheng
Published: March 2013

Thermal decay characteristic of fiber Bra gg Grating (FBG) written into hydrogen-loaded optical fiber by exposing to ultraviolet (UV) laser irradiation through a phase mask is presented and experimentally demonstrated. Results of the experiment show that the FBG has a high temperature sustainability of 600 °C with main taining 26.6% of initial reflected light power after annealing for 24 hours. High temperature resistance grating based on the hydrogen-loaded conventional FBG has been fabrication and the shift of the Bragg wavelength w ith temperature is investigated over a range from -60 °C to 700 °C. The relationship between the wavelength of the FBG and te mperature indicates its feasibility as temperature sensor for high temperature.
Investigation of Sensor Fault Diagnosis in Air Handling Units Based on Wavelet Energy Entropy
Authors: Li Su Ping , Fan Yao Ling
Published: March 2013

This paper presents a novel fault diagnosis method for sensors in air-handling units based on wavelet energy entropy. Instead of directly comparing the numerous data under noise conditions, the wavelet energy entropy deviation is used for the fault detection and diagnosis. The actual Three-level wavelet analysis is used to decompose the measurement data captured from sensors first and then the concept of Shannon entropy is referred to define the wavelet energy entropy. Once the wavelet energy entropy is obtained, whether the sensors are faulty can be confirmed through comparing the deviation of the wavelet energy entropy residual of the measured signal and the estimated one to the preset threshold. Testing results show that the wavelet energy entropy is a sensitive indictor to diagnose the sensor faults. The deviations of wavelet energy entropy of sensors under fault-free conditions and faulty ones all exceed the threshold. The severer the fault is, the larger the residuals of the wavelet energy entropy will be. The results prove that the proposed method is valid and effective for the fault detection and diagnosis of the sensors.
Application Research of Fiber Bragg Grating for Sensing Finger Pressure Detection on High Voltage Isolate Switch
Authors: Yang Tong Yao , Shen Chao , Zhou Ya Ping , Li Ying Na , Xie Tao , Li Chuan
Published: March 2013

The sensing finger pressure does not meet the requirements can cause isolation switch overheating, even lead to accident in the operation of high voltage isolate switch. According to the structure of isolating switch, FBG pressure sensor and FBG displacement sensor are installed on isolate switch, which constitute the sensing finger pressure detection system. The sensing finger pressure detection experiments indicate that, when the moving contact’s closing position of isolate switch changes from 0.267mm to 29.040mm, the sensing finger pressure ranges from 30.378N to 32.970N.However, when spring pressure changes from 42.776N to163.827N, the sensing finger pressure ranges from 29.033N to 111.193N.The sensing finger pressure measuring system can realize real-time and online monitoring of the sensing finger pressure.
Appropriate Boundary Conditions for Nonlocal Elastic Beams
Authors: Xu S.P. , Xu M.R. , Wang C.M.
Published: March 2013

This study is concerned with the boundary conditions of elastic beams within the framework of nonlocal elasticity th eory. The general solutions of the plane stress problem are, firstly, discussed. Through which and by employing the decaying analysis technique proposed by Gregory and Wan, a set of necessary conditions on the edge-d ata, other than the pure displacement one, for the existence of a decaying solution are formulated. A novel method in constructing the auxiliary regular state is also demonstrated, which is different fr om that we used before. Finally, the appropriate boundary conditions for the interior solution are obtained, which are not altered by the nonlocal parameter and take the form as these for their local elastic counterparts.
Design of Constant Current Source Based on Pulse Width Modulation
Authors: Sun Li Hui , Wang Shu Jing , Chen Wei
Published: March 2013

Design of the constant current source based on pulse width modulation, and its working principle are discussed. The design can adjust the output current through pulse width modulation (PWM), and realize micro regulation by feedback output which stabilizes current output. The constant current source has some advantages of high precision, stable work, high conversion efficiency.
The Modal Analysis of 16V240 Diesel Engine
Authors: Li Ming Hai , Hong En Zhe , Zhang Yu Guang
Published: March 2013

In order to understand the dynamic characteristics of 16V240 type diesel, established its solid model and finite element model. And conduct the modal analysis of 16V240 diesel with Lanczos method to get the natural frequencies and vibration mode. And then, find the weak points of 16V240 diesel for its structural redesign and improving.
The Online Prediction of the Low Carbon Ferrochrome Terminal Composition in Smelting Process
Authors: Zhang Niao Na , Wang Ying Ying , Bai Yong Jun
Published: March 2013

The online prediction of the low carbon ferrochrome terminal composition in electro-silicothemic smelting process plays a key role in guiding the determining the tapping time, the smelting process of the power supply system, the production quality and the energy consumption and so on. By introducing the multi-scale wavelet kernel function in the support vector machine (SVM) algorithm, and according to the Bayesian classifier to certain different smelting conditions, we chose different decomposition scales. In this way, the accuracy of the terminal composition prediction during the smelting process is improved greatly. Experiments show the effectiveness of the proposed method.
Facile Synthesis of Stearoyl Diethanolamide and its Excellent Corrosion-Inhibiting Properties for Carbon Steel Protection
Authors: Han Tian Li , Jiang Ting , Shan Dong Fang , Liu Jin Yun
Published: March 2013

A facile approach for prepar ing stearoyl diethanolamide was reported. The as-synthesized product was further applied for the protection of car bon steel from corrosion solution. On the basis of orthogonal experiments, optimal reaction conditions were investigated. The results show that the yield rate can be up to 84.6% under a condition of molar ratio of stear ic acid to ethylenediamine is 1:1.7, the reaction time and temperature are 4 h a nd 175 °C, respectively. The optimal concentration and potential corrosion-inhibiting mechanism were al so investigated by using scanning electronic microscopy, weight loss and electrochemical analysis. The presented synthesis route is facile which enable it to be promisingly applied for production widely. Furthermore, the excellent corrosion-inhibiting properties of st earoyl diethanolamide also indicate that it can be a fascinating candidate for protecting steels from corrosion in oil exploration and transportation.
Silver Metal Pattern Fabrication on a Glass Substrate Using a Conformal Contact Printing
Authors: Lee Da Hyeok , Park Se Geun , Kim Myoung Soo , Cha Young Hwan , O Beom Hoan , Park Dong Wha
Published: March 2013

This paper describes a simple metal pattern transfer method on glass substrates. Ag metal films were transferred by the conformal contact method at 150°C, which did not require higher pressure than the conventional nano-imprinting method. The important factors affecting quality of transferred metal patterns on glass were the usage of anti-sticking layer on mold surface, thickness of transferred metal films and temperature during contact printing step. Various Ag patterns were transferred onto glass substrate.
Comparison of Human Jogging and Walking Patterns Using Statistical Tabular, Scatter Distribution and Artificial Classifier
Authors: Yong Ching Yee , Sudirman Rubita , Mahmood Nasrul Humaimi , Chew Kim Mey
Published: March 2013

This study investigates and acts as a trial clinical outcome for human motion and behavior analysis in order to investigate human arm movement during jogging and walking. Three methods were proposed to differentiate and separate both of the jogging and walking data set, they are statistical tabular, scatter distribution and artificial classifier recognition. Linear decision boundary and radial basis function kernel (RBF) were proposed to perform the separation works for artificial classifier recognition section. It aims to establish how widespread the movement and motion of arm will bring to effect of human in life. An experiment was set up in a laboratory environment with conjunction of analyzing human motion and its behavior. The instruments demonstrate adequate internal consistency of optimum RBF kernel for jogging and walking pattern classification. RBF used in this study was successfully differentiate and classify the jogging and walking patterns of a human arm movement during performing these activities.
Kinematics Analysis and Design of a Novel Robot Shoulder Joint
Authors: Cui Bing Yan , Jin Zhen Lin
Published: March 2013

Kinematics research of mechanism is very important, the dynamic analysis and the design are based on kinematical analysis. In this paper, a novel robot shoulder joint based on 3-RRR orthogonal spherical parallel mechanism is proposed, and the kinematics transmission equation of shoulder joint is derived by using the kinematics inverse solution, and Jacobin matrix is established. Then Jacobin matrix is introduced into the global performance index, and the velocity of global performance evaluation index is defined. Furthermore, the shoulder joint dimensions are changed, and the global performance index is analyzed, then a performance atlas is given at the work spaces of shoulder joint with different dimension. It is found that the Jacobin matrix has more important influence on the kinematics performance of the shoulder joint. Having a good kinematics performance, structure dimensions ranges of shoulder joint are gained, thus the evaluation of kinematics of shoulder joint is more comprehensive. Finally, a novel robot shoulder joint is designed with the kinematics performance evaluation index.
Analysis of Static and Optimization of Structural Parameters for a Novel Leg Mechanism
Authors: Cui Bing Yan , Jin Zhen Lin
Published: March 2013

In order to increase wosrkspace and carrying capacity of leg mechanism and improve popularity and adaptability of leg mechanism, a novel mechanism is proposed which has three branches of 6-DOF, which used 3-UPS parallel mechanism as the prototype of the mechanism. The static performance of the leg mechanism is analyzed and the structure parameters are designed. First, the static transmission equation of the leg mechanism is established by using the principle of virtual works which simplifies the calculation process of the leg mechanism. Further, the static performance evaluation index and the global torque performance evaluation index are defined, and the performance atlas of the static performance evaluation index is plotted at the work spaces of the leg mechanism. Moreover, by using of the space model theory, the structural dimensions parameters are optimized of the leg mechanism. Finally, using a set of optimal structural dimensions parameters and the virtual prototype of leg mechanism is designed. The research provides a theoretical basis for further investigation on leg mechanism.
Primary Methods of Decreasing the Pollutant Emissions in an Industrial Furnace of Liquid Fuel of 100 MW
Authors: Călugăru Florentina
Published: March 2013

The paper is focusing on two primary methods used for pollutant emissions decreasing at power plants, the modernisation of the power plant units with low NOx burners installation and the possibility to use the regenerable energy sources (mixtures of biofuels and liquid fuels) in energy field. CO2 emissions reducing is the result of computation of the mixtures combustion on an industrial furnace. By experiments with vegetable oils and by CO2 computations on an industrial furnace it can be proved the possibility to use the mixtures of biofuels for the heat and electricity production.
Thermal Stability of Thiolate Self-Assembled Monolayers on Copper Surface
Authors: Kongsumrit Pacharaporn , Kheawhom Soorathep
Published: March 2013

The formation of self-assembled monolayers (SAMs) of organothiol is one of the excellent methods for corrosion protection. This work studies the thermal stability of thiolate SAMs coating on a copper surface. Three types of thiolate SAMs including 1-octanethiol (OTT), 2-ethylhexanethiol (2-EHT), and 2-phenylethanethiol (2-PET) are investigated. These chemicals are similar in terms of the chemical formula but different in chemical structure. Contact angle, AFM, FT-IR, XPS, and potentiodynamic polarization are used to analyze hydrophilic and hydrophobic features, roughness, decomposition of SAMs, and corrosion inhibition efficiency, respectively. The optimum condition of oxygen plasma treatment is determined. The results show that the optimum time for the treatment is 15 s. The oxygen plasma increases roughness of the Cu surface and induces the hydrophilic feature, which is suitable for SAMs to form on the Cu surface. The Cu surfaces coated by each SAMs are annealed at the temperature ranging from 25 to 250°C. The OTT is decomposed at 80°C while the 2-EHT is decomposed at 140°C. The 2-PET is not decomposed at 140°C, because the 2-PET consists of aromatic rings that are more stable than other functional groups in OTT and 2-EHT structures. These results also refer to improvement of thiolate bond stability aided by aromatic ring in the 2-PET molecule. All SAMs are completely decomposed at 250°C. In conclusion, the 2-PET is the most favorable in terms of thermal stability.
A Novel Dual-Band Planar Wilkinson Power Divider
Authors: Liang Li Ming , Liu Yuan An
Published: March 2013

A two-way symmetrical modified Wilkinson power divider with shifted output ports and wide range frequency-ratio is proposed for dual-band application. The symmetrical Wilkinson power divider consists of one section coupled line, one section microstrip line, the shifting of two output ports to the middle, two open stubs at the input port and an isolation resistor. The corresponding nonlinear design equations are derived by using the even- and odd-mode analysis. Moreover, solving the nonlinear design equations by optimization algorithms, accurate numerical design parameters along with different frequency ratios are obtained. Finally, the proposed structure and design method are validated by simulation and experimental results of microstrip planar Wilkinson power divider.
Biased AC Electroosmosis Device for the Detection of DNA Molecules with Piezoresistive Microcantilever
Authors: Arefin Md Shamsul
Published: March 2013

This work represents active DNA concentration on piezoresistive microcantilever using biased AC electroosmosis. Two different sizes of DNA molecules, -phage DNA (48.5 kbp) and single-strand DNA of 20 nucleotides are concentrated on separate piezoresistive microcantilever sen- sor for detection. Before concentration, mixing of DNA molecules is performed using the same device for efficient concentration. During concentration of DNA molecules, biased and unbiased AC elec- troosmosis are needed to concentrate single-strand DNA and -phage DNA, respectively. Moreover, dielectrophoresis is induced by biased AC electroosmosis that can generate attractive force to trans- port negatively charged single-strand DNA. This paper represents a device configuration to integrate biased and unbiased AC electroosmosis and dielectrophoresis with piezoresistive microcantilever sen- sors for the detection of -phage DNA and single-strand DNA.
Performance Evaluation of 32-nm CNT-OPAMPs in Analog Circuits: Design and Comparison of Leapfrog Filters
Authors: Ilyas Ikram , Fatema Niger , Shama Refaya Taskin , Rahman Fahim
Published: March 2013

In this paper, we have presented the design and characteristic performance evaluation of a 6-order Leapfrog Filter. First we designed the filter by using Silicon-based CMOS Operational Amplifiers (Si-OPAMPs). Then we designed the filter with Carbon Nanotube-based Operational Amplifiers (CNT-OPAMPs) using a benchmark nine-transistor Operational Amplifier (OPAMP) model with single-walled Carbon Nanotube Field-Effect Transistors (SW-CNTFETs) as primary building-blocks for 32nm technology. We compared the performance between the two and achieved higher phase margin, improved power dissipation, and significantly higher input resistance for the CNT-OPAMP based filter. Then we further evaluated the performance of the CNT-OPAMP based filter by changing the number of SWNTs used in the intrinsic channel region of the CNTFET, keeping all other design parameters the same. Our simulation-based assessment has shown a satisfactory superiority for CNT-OPAMP filter design in comparison with Si-based CMOS filter design. The results obtained suggest that the CNT-OPAMP has a promising potential for low-power, high-speed applications in both analog and mixed-signal nanoelectronic circuits.
Design and Performance Evaluation of a 10GHz 32nm-CNTFET IR-UWB Transmitter for Inter-Chip Wireless Communication
Authors: Rahman Fahim , Das Prodyut , Hossain Md. Forhad , Khan Sazzaduzzaman , Chowdhury Rajib
Published: March 2013

In this paper, we have presented the design and performance evaluation of a 10GHz 32nm-CNTFET IR-UWB transmitter for inter-chip wireless transmission. We have designed the transmitter using a VCO-based high speed clock generator and a positive and a negative monocycle Gaussian pulse generator. RF compatible Carbon Nano-Tube Field Effect Transistors (CNTFETs) have been used as the building blocks of the oscillator and the logic gates. The final design has resulted to a 7-channel-SWNT CNTFET-based transmitter for optimum 10GHz data rate with a promising 650mV pulse amplitude and only 1.069mW power consumption with a -32.27dB output. This transmitter can also operate satisfactorily upto 15GHz. The results show promising superiority over existing transmitters regarding high data rate, low power loss and high pulse amplitude.
The Analysis of Database Security Requirements for Cryptographic Algorithm
Authors: Do Hana , Jeong Hoon , Choi Eui In
Published: March 2013

The cloud environment is recently emphasized when we save a large amount of data with a minimum of maintenance. But the cloud is a variable environment that data is likely to be changed when which is transferred, and even doesn't permanently store. Besides it has the risk of phishing from a third party. A scalable storage space as one of the features of the cloud has to consist as more proactive access control, secure encryption, and key management in the aspect of the size of the database and the number of users. In this paper, we analyze about database security requirements of these environment and the provided encryption technologies of until now. And, even anyone who don't have the expertise for security assessment and management or CC could be easily accessible it.
Modeling of Interaction Layers from Conductive Microparticles with TE Electromagnetic Wave
Authors: Anzulevich Anton , But’ko Leonid , Moiseev Sergey , Zotov Il’ya
Published: March 2013

Dependences of distribution, penetration, reflection and absorption of microwaves in the layers of conductive micro-particles on the frequency of the incident radiation and size of particles are obtained and investigated. Layers of conductive spherical particles as the shell, and without it are accepted in our work as the most common model of powder metals. So, this study allows to describe and classify features of electromagnetic wave heating of various metal powders and to predict the performance, in which it will be effective heating of metal powders by electromagnetic radiation.
Study on the Effect of Matrix Properties on the Mechanical Performance of Carbon Fabric Composites
Authors: Shao Yong Zheng , Phong Nguyen T. , Okubo Kazuya , Fujii Toru , Shibata Ou , Fujita Yukiko
Published: March 2013

Carbon fiber (CF) reinforced compositesusing different types of vinylester (VE)resin includingconventional VE resinhave been prepared. The mechanical performance were characterized by different tests, such as tensile, mode-I interlaminarfracture toughness, tension-tension fatigue and scanning electron microscope (SEM).The experimental results showed that the tensile strength of CF/VE composites changed at a wide range from 22.3% to 37.8% in comparison with the CF/conventional VE composite due to resin type, where the strain at failure was varying. The tensile strength increased with an increase of adhesive strength between carbon fiber and VE resin characterized by the microdroplet test. Namely, a good correlation between the tensile strength of composites and the adhesive strength was found. On the other hand, almost an inverse correlation was found between the tensile strength of composites and the interlaminar fracture toughness of composites obtained by DCB (double cantilever beams) tests. There was no apparent correlation found between the strain at failure for pure resins and the tensile strength of composites.Thefatigue life of CF/VE compositesincreased as well as the tensile strength with an increase of the adhesive strength between carbon fiber and the resin. The samples sometime survived 1000 times longer than that of CF/conventional VE compositewhen the maximum cycle stress was 70% of the tensile strength of the strongest composite.