bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical Properties and Morphology of Plasticized Poly(vinyl chloride) Nanocomposites Filled with Nanosilica
Authors: Chuayjuljit Saowaroj , Sukkasem Nuttapol
Published: March 2012

The mechanical properties (tensile properties, tear strength) and morphology of plasticized poly(vinyl chloride) (PVC) nanocomposites filled with varied loadings of nanosilica (nano-SiO2) (3-9 phr) were investigated. It is found that the addition of nano-SiO2 into the plasticized PVC by melt mixing process results in the increase in the Young’s modulus and tear strength, but the decrease in the tensile strength and elongation at break in a dose dependent manner. The SEM micrographs show ductile fractured surfaces for the neat plasticzed PVC and for the nanocomposites with low nano-SiO2 loadings (3 and 5 phr). As the nano-SiO2 loadings are 7 and 9 phr, SEM images illustrate smoother surfaces, caused by the reduction in the flexibility of the plasticized PVC nanocomposites.
Effects of Fiber Surface Treatment on Mechanical and Thermal Properties of Coir-MCC/Polylactic Acid Composites
Authors: Tayommai Tanawat , Aht-Ong Duangdao
Published: March 2012

Biodegradable plastic reinforced natural fiber composites are finding applications in many fields ranging from construction industry to food industry. The use of natural bio based fillers as reinforcements in composites has several advantages over inorganic fillers including lower density, renewability, and biodegradability. In this research, polylactic acid (PLA)/ microcrystalline cellulose (MCC) composites were investigated as a means to reduce the material cost and enhance the material properties. The coir fibers were used to prepare microcrystalline. Subsequently, the prepared MCC was treated with 3-amiopropyl triethoxysilane (APS) to improve interfacial adhesion between fiber and polymer matrix. Treated and untreated MCC were then mixed at 0-10 wt.% with PLA by twin-screw extruder and fabricated into test specimens by compression molding. The effects of MCC loading and surface treatment on morphology, mechanical properties, and thermal properties of PLA/MCC composites were investigated. The results showed that the PLA with 5 wt.% of MCC exhibited the best mechanical properties compared with all prepared composites. Thermal stability of PLA composites were decreased with increasing MCC content but it can be improved by treated the MCC with APS.
Properties and Nonisothermal Crystallization Behavior of Nucleated Polylactide Biodegradable Composite Films
Authors: Phetwarotai Worasak , Aht-Ong Duangdao
Published: March 2012

Polylactide biodegradable composite films were prepared via melt extrusion using a twin screw extruder. The effects of type and content of nucleating agent and cooling rate on the thermal and tensile properties of these films were investigated. Two types of nucleating agent, talc and nano precipitated calcium carbonate (NPCC), were studied at various contents from 0 to 2.0 phr. Nonisothermal crystallization behavior of composites was characterized by a differential scanning calorimetry (DSC). The cooling rate was varied from 1 to 10°C/min. The results indicated that the presence of nucleating agent significantly influenced on thermal and tensile properties of the PLA composite films. DSC thermograms revealed that the addition of nucleating agent on the PLA films led to an increase of crystallization temperature (Tc), crystallization rate, and degree of crystallization (χc) compared to the neat PLA. These behaviors could be noticed in both the nucleated PLA films with NPCC and talc. In contrast, the Tc and crystallization half-time (t 1/2) of these films significantly decreased when the cooling rate increased from 1 to 10°C/min. However, thermal stability of the films decreased when the nucleating agent content increased, especially that of the composites with NPCC.
Study on Machinability Behaviour of Carbon Fibre Reinforced Plastics (CFRP) Using PCD 1500 Grade Insert
Authors: Guru Neelakandan S. , Lakshmanan A.R. , Lakshminarayanan V.
Published: March 2012

The applications of composite materials based on Carbon Fiber Reinforced Plastic (CFRP) have been increasing considerably in aerospace industries, because of their good physical and mechanical characteristics. It is necessary to develop new manufacturing process and production techniques to ensure good surface quality of the components. As a result of this manufacturing scenario, it is necessary to study the machining process. This study reports practical experiments in turning, to study the performance of Poly Crystalline Diamond (PCD) inserts of 1500 grade. The results show that diamond tools are suitable for use in finish turning. The tests were carried out with PCD insert at various cutting speeds on a medium duty lathe of spindle power 2KW. In the optimization method, turning was done by grade (PCD 1500) for 30 seconds duration for each trial at different cutting conditions by using design of experiments. Parameters such as power consumed by main spindle, surface roughness were measured. Graphs were drawn to analyze the performance of1500 grade on various parameters.
Mechanical Behaviour of Chemically Treated Reshira-Epoxy Composite at Cryogenic Temperatures
Authors: Vasumathi M. , Vela Murali
Published: March 2012

Natural fiber composite has already proved its worth in various mechanical applications. Natural fibres with attractive properties such as low density, environment-friendliness and less processing work are widely available and provide an alternative to the conventional fibres. In this paper, the fibre reshira has been tried for the first time for cryogenic applications. Initially, the fibre is given chemical treatment with sodium hydroxide solution to enhance the adhesion between the fibre and the resin. The treated fibre is reinforced with epoxy resin and its properties such as storage modulus, loss modulus and Glass Transition Temperature are evaluated both at room temperature and under cryogenic conditions and these are compared to see which condition produces better mechanical performance.
Tool Wear of Polycrystalline Cubic Boron Nitride Compact Tools in Cutting Hardened Steel
Authors: Wada Tadahiro
Published: March 2012

Using polycrystalline cubic boron nitride compact (cBN) tools, which have different cBN contents and cBN particle sizes, the influences of both the cBN content and the cBN particle size on tool wear in turning of hardened steel at various cutting speeds was experimentally investigated. Three types of cBN tools (a cBN content of 45-55% and 75%, and a cBN particle size of 0.5 μm and 5 μm, respectively) were tested. Furthermore, three kinds of chamfered and honed cutting edges were also used. The main results obtained are as follows: (1) In the case of the cBN tools with the same cBN particle size of 5.0 μm, the tool life of the cBN tool with a cBN content of 75% was longer than that of the cBN tool with a cBN content of 45% at low cutting speed. However, at high cutting speed, the tool life of the cBN tool with a cBN content of 75% was shorter. (2) The tool life of the cBN tool with both a cBN content of 55% and a cBN particle size of 0.5 μm was the longest. (3) The tool wear of cBN tools decreased with a decrease in chamfer width.
Synthesis and Properties of Sb Layered Te/Cd Stack Prepared by Elemental Stack Method
Authors: Shanmugan Subramani , Devarajan Mutharasu , Ibrahim Kamarulazizi
Published: March 2012

Sb layered Te/Cd thin films have been prepared by using Stacked Elemental Layer (SEL) method. The presence of mixed phases (CdTe and Sb2Te3) in the films was confirmed by the x-ray diffraction technique. The calculated structural parameters demonstrated the feasibility of Sb doping via SEL method. The topographical and electrical studies of the synthesized thin films depicted the influence of Sb on both surface morphology and conductivity. The values of conductivity of the annealed films were in between 2 x 10-3 and 175 x 10-2 Scm-2. A desired chemical composition of films was confirmed from spectrum shape analysis using energy dispersive x-ray.
Kinetics of Thermal Degradation of Ionic Liquid Regenerated Cellulose
Authors: Muhammad Nawshad , Man Zakaria B. , Khalil M. Azmi Bustam , Rafiq Sikander
Published: March 2012

In the present work ionic liquid has been used for the regeneration of cellulose from waste writing paper. The regenerated cellulose was characterized by TGA, FTIR and XRD analyses. Kinetics of thermal degradation of this cellulose was carried out under dynamic condition using thermogravimetry. Coats-Redfern kinetic model was used to determine the kinetic parameters for the degradation process. The activation energy for the thermal degradation of the regenerated cellulose has been found to be less than the precursor waste paper.
Monoaromatic Pollutant Removal by Carbon Nanotubes from Aqueous Solution
Authors: Pourzamani Hamidreza , Bina Bijan , Amin Mohammad Mehdi , Rashidi Alimorad
Published: March 2012

The removal of monoaromatic (benzene (B) and toluene (T)) from aqueous solution by multi walled, single walled, and hybrid carbon nanotubes (MWCNTs, SWCNTs, and HCNTs) was evaluated for a nanomaterial dose of 1 g/l, concentration of 10-100 mg/l, and pH 7. The equilibrium amount removed by SWCNTs (B: 9.98 mg/g and T: 9.96 mg/g) was higher than for MWCNTs and HCNTs. Toluene has a higher adsorption tendency on CNTs than benzene, which is related to the increasing water solubility and the decreasing molecular weight of the compounds. The SWCNTs performed better for B and T sorption than the MWCNTs and HCNTs. Isotherms study based on isofit program, indicate that the Generalized Langmuir-Freundlich (GLF) isotherm expression provides the best fit for benzene sorption and Brunauer-Emmett-Teller (BET) isotherm is the best fit for toluene adsorption by SWCNT. SWCNTs are efficient B and T adsorbents and possess good potential applications to water and wastewater treatment and maintain water of high quality that could be used for cleaning up environmental pollution.
Modeling and Analyzing the Voltage-Displacement Performance of Cymbal Piezoelectric Transducers
Authors: Gao Quan Qin
Published: March 2012

Voltage-Displacement Performance (VDP) is one of the most important characteristics of cymbal when it is used as actor. Based on analyzing the piezoelectric ceramic sheet stress of cymbal transducer, the piezoelectric equations with boundary stress conditions are given. And a VDP function of cymbal transducers is established. It is validated that the calculation results by the VDP function agree with the results by experiments. Through analyzing the VDP function, some curves of the relationship between the parameters of cymbal transducer and equivalent piezoelectric constant de33 are given. These curves are useful to cymbal transducer errors controlling, batch producing, and consistency performance controlling.
MFL Detection Defect Reconstruction of Pipeline Based on Conjugate Gradient Methods
Authors: Yang Li Jian , Sun Xiao , Gao Song Wei
Published: March 2012

For the problem of MFL (magnetic flux leakage) inner detection signal reconstruction for pipeline, a method based on the FR conjugate gradient iterative was introduced to solve the inverse problem of electromagnetic field. The physical model of magnetic flux leakage inner detection in pipeline had been established by the finite element analysis software named ANSYS. 90 groups of different parameters of defects had been simulated in MFL. Fundamental function had been found by fitting curve. FR conjugate gradient iterative had been programmed by MATLAB in order to solve nonlinear equations. Comparing with Newton, conjugate gradient can get reconstruction defect parameter more accurately and better reconstruction results.
A Multi-Role Particle Swarm Algorithm for Numerical Optimization
Authors: Quan Hai Yan , Liu Zeng Li
Published: March 2012

the paper proposes a stochastic differential search operator (SDSO) which can traverse the numerical object space (eg. ), and a Multi-Role particle swarm which can be differentiated into the different roles to search the objective space using the different strategies. Based on the SDSO and the Multi-Role particle swarm, a Multi-Role particle swarm algorithm (MRPSA) for numerical optimization is proposed. In the test experiment, 6 unconstrained benchmark functions are used to demonstrate the performance of MRPSA. The results show that MRPSA can find the optimal or close-to-optimal solutions of those benchmark functions efficiently.
Application of Shaft Lining Monitoring System in the Deep and Thick Overburden
Authors: He Peng Li , Zhang Dong Xiao
Published: March 2012

The vertical additional force could make the shaft lining in deep topsoil fracture. The force is caused by the bottom aquifer drainage settlement. In order to analyze the mechanical state of shaft, a shaft lining automatic monitoring system is built. The overall safety can be valuated by it. When monitoring data show that the shaft lining will be fractured, management measures can be timely taken to prevent more damage. In the process of ground grouting treatment to prevent shaft fracture, the monitoring data can be as the shaft lining stability and grouting parameters adjustment basis, to ensure safety and grouting reinforcement effect.
Control System Design of Braking Energy Regeneration of Miniature Electric Car Based on Super Electric Capacity
Authors: Lian Lan Xiang , Gao Li , Chen Xue Mei
Published: March 2012

The paper mainly introduced the merit of taking the super electric capacity as the main energy- stored installation, the basic principle of braking energy regeneration system, the designed scheme, the hardware along with the operation mode of electric vehicle. The design of hardware circuit and operation mode had been carried on.
Intelligent Digital Voltage Meter Design and Implement Based on AD7715
Authors: Li Xiao Zhen , Zhang Jian Lin , Zou Wen Sheng , Kang Yao Ming
Published: March 2012

AD7715 is a high accuracy A/D converts chip made by American company Analog – Devices which involves a programmable gain amplifier, a programmable digital filter. It employs the Σ-Δ ADC technology to realize the 16-bits accurate measurement. The voltage meter uses 89C55 SCM as control, uses analog switch to conduct multi switch for measured voltage through signal conditioning, uses new 16-bit A/D convert to sample measured voltage being conditioned, uses 128 X 64 dot-matrix LCD as display screen to show the wave and Chinese words. This article mainly introduces the means of applying AD7715 chips to design accurate voltage meter.
Influence of Strip Wave-Shape upon Running Deviation inside Continuous Annealing Line
Authors: Zhang Yan , Yang Quan , He An Rui , Yao Xi Jiang , Guo De Fu
Published: March 2012

In order to enhance the running deviation during the production of continuous annealing line (CAL) unit, the author conducted a research and revealed that the wave shape of incoming strip had significant effect on the deviation based on the statistic analysis of production data. Via finite element method analysis, a strip-furnace-roller dynamic simulation model was established, in which the perturbation of incoming strip to operation in contact zone was simulated to qualitatively research on effect trend of incoming wave shape on deviation. The result indicates that the strip with single edge wave causes more deviation than strips with other types of wave; in addition, wave height, wave length and wave width have contribution to the influence on the deviation. Accordingly, methods were adopted to optimize the upstream work procedure, and control single edge wave of incoming cold rolls can reduce accidents of slow-down and emergency shutdown caused by deviation.
Geometric Calibration of Machine Tool Based on Auto-Trilateration
Authors: Wang Hai Tong , Wang Li Ping , Guan Li Wen , Han Jian
Published: March 2012

In this paper, an innovation method to describe the geometrical error of the machine tool based on trilateration is proposed. This method can be carried out by measuring the interferometric displacement between reference point and offset point of spindle. The experimental result has been compared with that of laser interferometer under the same CNC machine-tool, and both of them can achieve the satisfied result. Therefore this scheme can be applied to a more sophisticated situation. What’s more, there is no limitation to the maximum size of the working volume. Without the calibration equipment, it can be easily evaluated with simplified data structure.
Full-Column Rank Solutions to a Nonlinear Matrix Equation
Authors: Wang Yan Tao , Yang Xin Rong , Zhang Rui Zhi
Published: March 2012

This paper concerns full-column rank solutions to the nonlinear matrix equation XA+XBX=HX, which is proposed from the so-called regulation problem of continuous-time (descriptor) linear systems with constrained states and controls. Sufficient and necessary conditions under which the nonlinear matrix equation has at least one full rank solution are investigated, and thereby, a mistake in [1] is pointed out by constructing a counterexample. Moreover, one full-column rank solutions to the nonlinear matrix equation is constructed.
Design of Developing Platform for Equipment Management Based on Workflow Technology
Authors: Wang Shu Rong , Dong Gao Feng
Published: March 2012

Due to equipment management status in power plants, a developing platform for equipment information management is suggested, including implemented functional modules: authority management, workflow management and business module management, etc. Based on this developing platform for equipment management, a variety of application programs corresponding with equipments can be developed flexibly, and information integration among applications can be carried out fluently.
Designing and Simulation Testing of Kilowatt Switching Power Supply Transformer
Authors: Zhao Zheng Quan , Wang Zhong
Published: March 2012

Introduce when designing high-frequency transformer the issues which must take into consideration. Meanwhile make use of area product method (AP), designed a high-frequency transformer which apply to inverter power supply, and conducted experiments
Battlefield Acoustic Target Localization in Electronic Sentinel System
Authors: Liu Guang Yu , Zhang Cheng , Liu Tie Lin
Published: March 2012

The problem of battlefield acoustic target localization is studied based on an array model of a uniform circular array (UCA) mounted on a rigid cylinder including beamforming technology and high resolution direction of arrival (DOA) estimation algorithm. The influence of various facts to the discussed localization algorithms is analyzed. It is concluded that the direction of the battlefield acoustic target can be achieved by the proposed high resolution DOA estimation algorithm. The performance of the eigen-beam beamforming array and the high resolution DOA estimation algorithm can be improved by the rigid cylinder.
Application of Combination Forecast Model in the Medium and Long Term Power Load Forecast
Authors: Zhao Ke , Gan Lin , Wang Zhong , Xiong Yan
Published: March 2012

For seasonal and long-term power load forecasting problem, this paper presents an optimal combination forecasting method, which can optimize the combination of multiple predictive models. Optimize the combination of the two model predictions with two models as an example, which are the gray GM(1,1) model and linear regression model, and finally compare the predicted values of combination with the real values. The results show that: the combination forecasting method has a high prediction accuracy, and the error is very small.
An Improved Covering Fuzzy Rough Set Model
Authors: Wang Qing Hai
Published: March 2012

In this paper, we proposed the covering fuzzy rough set model based on multi-granulations and discussed some interesting properties about the model. The research may enlarge the application range of the rough set theory in real life. The lower and upper approximations of fuzzy set are defined by multi-covering relations on the universe, and some basic properties are introduced. It is shown that the fuzzy rough set model based on multi-covering relations is an extension of the rough set model based on multi-granulations.
A Method of Multi-Classifier Combination Based on Dempster-Shafer Evidence Theory and the Application in the Fault Diagnosis
Authors: Lv Feng , Du Ni , Du Hai Lian
Published: March 2012

A problem is aroused in multi-classifier system that normally each of the classifiers is considered equally important in evidences’ combination, which gone against with the knowledge that different classifier has various performance due to diversity of classifiers. Therefore, how to determine the weights of individual classifier in order to get more accurate results becomes a question need to be solved. An optimal weight learning method is presented in this paper. First, the training samples are respectively input into the multi-classifier system based on Dempster-Shafer theory in order to obtain the output vector. Then the error is calculated by means of figuring up the distance between the output vector and class vector of corresponding training sample, and the objective function is defined as mean-square error of all the training samples. The optimal weight vector is obtained by means of minimizing the objective function. Finally, new samples are classified according to the optimal weight vector. The effectiveness of this method is illustrated by the UCI standard data set and electric actuator fault diagnostic experiment.
A Method of Fault Detection and Diagnosis Based on Time-Frequency Analysis
Authors: Liang Ying Bo , Zhang Li Hong , Li Jin
Published: March 2012

In the paper the authors propose a combination of the EMD (empirical mode decomposition)method and the wavelet analysis to suppress the noise and fault detection and diagnosis, It adopts empirical mode decomposition to current signal ,obtained a series of IMFs(Intrinsic Mode Function),removing the first IMF component to denosing,and then analyzed multi-scale ,using signal become mutated have the maximum modulus determine the time that the failure appeared ,the results show that this method determine the time that the failure appeared.
Study on High Frequency Hydraulic Exciter Based on Rotary Valve Control
Authors: Zhang Jian Zhuo , Guan Li Zhe , Li Kang Kang
Published: March 2012

A kind of hydraulic exciter based on rotary valve control was studied in this paper, the composition of the exciter and its working principle were introduced, and the mathematical model of the system was established. The characters of the system were simulated using MATLAB. From the results of the simulation, we get the relationship of the amplitude of Vibration oil cylinder between the system’s pressure and the exciting frequency. The results can provide theoretical bases to design the hydraulic exciter.
The Study on Signals Control System of Wet Dual-Clutch Automatic Transmission Shift Process
Authors: Ma Jin , Sun Wei , Liu Guo Qiang
Published: March 2012

To ensure the dual-clutch automatic transmission shift quality, signals processing is required to be fast and stable. This paper designed a signal real-time monitoring and acquisition system for wet dual-clutch automatic transmission with Stateflow and LabVIEW8.6 development platform based on wet dual-clutch automatic transmission electronic control system. Experimental results show that the system is flexible control and responses fast.
Analysis of “Distance-Loss” Model Influence Factors in Vehicular Ad Hoc Networks
Authors: Wang Jiang Feng , Yan Xue Dong , Nie Shuo
Published: March 2012

In vehicular ad hoc network(VANETs), it is crucial for obtaining more accurate position information which variation rules between “distance-loss” model influence factors and distance measurement error is analyzed. Based on qualitative analysis of “distance-loss” model, field experimental scene and scheme are proposed. Using experimental sample data, the relation of environmental factor and shelter factor and distance measurement error is studied quantitatively. The experimental results show that distance measurement performance of optimized “distance-loss” model is significantly improved, and 6.7% is the largest reduction proportion of distance measurement error.
Calculation of the Branching Ratio of the Process μ→eγ in a Model of Electroweak-Scale Right-Handed Neutrinos
Authors: Bu Jian Ping , Jia Bei
Published: March 2012

Rich phenomenology is generally expected if the heavy neutrinos responsible via the seesaw mechanism for the small neutrino mass observed in neutrino oscillations are not much heavier than the electroweak scale. A model with this feature built in has been suggested recently by Hung. We analyze the lepton flavor structure in gauge interactions and calculate the branching ratios for the rare decays due to the gauge interactions in this model.
The Study of SPWM Controller Based on TMS320F2812 DSP
Authors: Gao Yu
Published: March 2012

The paper gives an introduction to a generation method of SPWM, based on TMS320F2812 DSP developed by the IT Company to adapt to the situation that the SPWM is widely used in the medium voltage inverter. It discusses the SPWM generation principle, and shows the System hardware architecture and its Software implementation. By experiments, this method is feasible to generate SPWM, and successfully applied to cells in series medium voltage frequency conversion system.
The Control System Design Based on PLC for Low-Pressure Sealed Cabin
Authors: Xiao Lu , Yang Xu Dong , Sun Dong
Published: March 2012

The air pressure, flow, temperature and humidity, carbon dioxide, oxygen and other environment variables in a sealed cabin are regarded as the simulated and measured objects in this control system. Siemens S7-200PLC is used as control core and Smart 700 touch screen is used as host computer, communication between them is accomplished through the PPI Protocol. The low-pressure sealed cabin mainly used to study the reaction mechanism and the resistance of human who living in the plateau. Meanwhile, it has extensive application value in mountaineering, sports, clinical medicine and many other fields.
Study on Processing Quality Monitoring Technology for Gun Barrel Caliber
Authors: Jia Chang Zhi , Liu Guang Sheng , He Yao Xin , Zhang Jing Bo
Published: March 2012

At present, the production and processing of the gun barrel caliber are mostly small batch. If the processing quality is controlled using the traditional SPC method directly, it is difficult to ensure the required sample size. For this situation, the small batch quality control theory and international basic ideas were introduced. The control model of the gun barrel caliber processing quality was established based on X—Rs control chart. Finally, taking the processing of a certain type of gun barrel caliber for example was analyzed.
Tool Wear Prediction Based on Fuzzy Cluster Analysis
Authors: Chen Hong Tao , Li Deng Wan , Fu Pan
Published: March 2012

There are several stages of tool wear in turning process. The theory and the algorithm of the fuzzy cluster analysis (FCA) are applied in the research of the CNC turning tool wear State.We collect of the force signals and vibration signals at each stage. Using wavelet filtering and power spectrum methods, typical parameters changes are detected. We extract the signal feature for fuzzy clustering. Experimental results show that the tool wear prediction is achieved in turning by using this pattern recognition method.
The Grey Relational Analysis of Driving Forces for Water Consumed Structure
Authors: Lv Cui Mei , Du Fa Xing
Published: March 2012

Grey Relational Analysis is a method of analysis and calculates the relational degree of evaluated object, which can characterize the relational degree between object with viral object. In this paper it was used to analyze the driving forces of water consumed structure change, and YiChang city was selected as an example. Adopted grey relational degree analysis, the main factors were found out. The results showed that industry water utilization rate, irrigation area, urbanization level are the main driving forces, and corresponding water-saving measures were put forward. This study can provide reference for the construction of water-saving society and sustainable utilization of water resource.
Research and Application of Reverse System Based on Bluetooth Technology
Authors: Liu Pin Xiao
Published: March 2012

Research on reverse system based on bluetooth was carried out in order to overcome the dependence on CMM and to cut down a large amount of auxiliary time. The system applied the bluetooth technology in the reverse engineering for the first time. Not only the dependence on CMM in reverse engineering was solved, but also was the error term decreased. The reverse precision was up to 0.001mm. Machining and Measuring on the same machine tool cut down the operation cost, reduced operator, improved process control, decreased auxiliary time of offline measuring, increase utilization ration and saved resources and cost
Analysis on Fatigue Damage of Metal Rubber Vibration Isolator
Authors: Cao Feng Li , Bai Hong Bai , Yang Jian Chun , Ren Guo Quan
Published: March 2012

The fatigue damage test of metal rubber vibration isolator is performed, the result of which shows that fatigue damage performance of metal rubber is different from conventional solid materials. The damage of metal rubber which is accumulated with its inner partial broken and wore wires, results in deterioration of its macro-mechanical characteristic, macro-cracking and final fatigue failure, so it does not rupture as sudden failure of solid material. It is difficult to describe damage evolution of metal rubber in the microscopic perspective, and from a macro point of view, it is feasible method to describe degree of fatigue damage which bases on the changes of mechanical properties. In order to reflect the incremental cumulative damage degree of metal rubber, the stiffness damage and damping damage are used to accurately describe the fatigue damage process of metal robber, and the comprehensive damage factor is proposed to be the fatigue failure criterion. Damage factor can predict fatigue life of metal rubber specimen accurately, so it has reference significance to design of metal rubber
The Statistic Definition and Research of the One Class Similar Special Curve
Authors: Wang Pin
Published: March 2012

This paper use the statistical method to give the similar definition of common broken line. This is the first derivative function of the Linear correlation analysis which is based on the history data of Shenhu Securities Market and through the RSI index line and the closing quotation price line of the financial trading products, which reaching a result of relative analysis coefficient that all bigger than 0.8. This speak volume for that both of the height of the broken line is similar. By using the fitting nature of RSI index line and closing quotation price line, we reach the price predictor formula of financial trading products and make an empirical analysis, which will provide math support for the extreme price of financial trading products by using RS index to judge.
The Management Cost Forecasted of Retaking Expired Operating Highway Based on the Grey Model GM (1,1)
Authors: Zhang Quan , Zhou Wei , Wen Hui Ying
Published: March 2012

For retaking expired operating highway, in order to maintain and enhance the normal operation condition of the highway, we still need continue to operate on highway management and maintenance, relevant departments must also be accurately measure the highway management cost. The paper is on the basis of the analysis of the construction of expired operating highway cost, builds expired operating highway’s management cost prediction model based on the grey model GM (1, 1), and examples verify the effectiveness of the model.
The Optimization Design of Vacuum Chamber in Vacuum Electron Beam Welding Machine
Authors: Yue Wei Wei , Song Yi Mei , Zhou Dong Bo , Liao Cai , Liu Dan Ping
Published: March 2012

Chamber deformation in vacuum electron beam welding machine directly affects the processing precision of whole equipment.In order to further improve performance of the welding machine,by the use of the computer simulation software, the Chamber structure in some type of vacuum electron beam welding machine,was optimized designed. And the optimized results were verified in a actual vacuum chamber. The results of deformation measurement show that the vacuum chamber optimization design is successful.
Simulation Analysis of Production Control Methods in Manufacturing Systems
Authors: Feng Shao Wei , Zhang Jing , Ding Shao Chun
Published: March 2012

It is very important to improve shop production performance in manufacturing process. The main manufacturing management methods include Kanban and Drum Buffer Rope (DBR) systems. In this paper computer simulation is used to evaluate the performance of these manufacturing systems. A simulation model was developed to collect and analyze some key performance indexes including total system output, flow time and average WIP invention. The optimal buffer size was found out by studying the two manufacturing systems at different capacities. The systems were also compared with and without machine breakdowns. The simulation model provided a significant insight into the two systems and the benefits of both the systems were realized
The Study on Starting Control of ER Clutch for Vehicle
Authors: Wang Jian Hua , Xu Hao , Xie Fei
Published: March 2012

This paper proposed a new design scheme for automatic clutch of AMT which is based on electrorheological (ER) fluid. Through analyzing the working principle and its transfer characteristics of ER fluid, it discussed the start process of vehicle and control strategy of ER Clutch. By changing the control voltage, ER clutch satisfied the requirements of evaluation indexes such as start time and impact degree. The simulation results showed that the control strategy can realize starting rapidly and steadily which would meet the start requirements of economical automobiles
Surface Acoustic Wave Based Radio Frequency Identification
Authors: Sun Qiu Ming , Tian Feng , Zhang Yan Jun
Published: March 2012

In this paper, a novel SAW RFID tag based on UWB chirp spread spectrum theory was proposed. The tag designation is in accordance with FCC standards of UWB wireless communications. The combination of UWB for SAW RFID has the characteristic of short delay due to large bandwidth and low energy required for the reader. Moreover, the encoding and detection for UWB SAW tag, which replaced the universally employed pulse position and on/off encoding methods in SAW tags with its central frequency of 2.45GHz and bandwidth of 82.5MHz, offers an effective way for multi-access SAW RFID tag system. Implementation of UWB CSS SAW RFID tag was demonstrated.
New Hardware Engine for New Genetic Algorithms
Authors: Ahmadi Fariborz , Tati Reza
Published: March 2012

Genetic algorithm is a soft computing method that works on set of solutions. These solutions are called chromosome and the best one is the absolute solution of the problem. The main problem of this algorithm is that after passing through some generations, it may be produced some chromosomes that had been produced in some generations ago that causes reducing the convergence speed. From another respective, most of the genetic algorithms are implemented in software and less works have been done on hardware implementation. Our work implements genetic algorithm in hardware that doesn’t produce chromosome that have been produced in previous generations. In this work, most of genetic operators are implemented without producing iterative chromosomes and genetic diversity is preserved. Genetic diversity causes that not only don’t this algorithm converge to local optimum but also reaching to global optimum. Without any doubts, proposed approach is so faster than software implementations. Evaluation results also show the proposed approach is faster than hardware ones.
A Kind of Spatial Angular Magnetic Gear Transmission
Authors: Man Yong Kui , Zhang Jun Feng , Zhang Yi Sheng , Zhang Shuo , Hao Wen Sheng , Li Hua
Published: March 2012

Gear exciting is of vital importance in modern power transmission systems. But when the requirements of angular gear transmission are needed, the shortcomings of the current mechanical and magnetic gear transmission are even more obvious. The traditional mechanical gear boxes have the construction of direct mechanical contact, whose disadvantages are low efficiency, noisy, apt to lubricate, easy to produce vibrations to be damaged and so on. And the existing magnetic gear is coaxial which can’t meet the need of angular transmission. In this paper, the construction of a kind of spatial angular magnetic gear, which has no direct mechanical contact between the driven axis and load axis, is proposed. Besides, the principle of the gear ratio is introduced and a concrete magnetic gear is analyzed. The results show that the range of the angle of this magnetic gear can be very large.
A Data Warehouse Cleansing Approach Based on Mathematical Association Rules
Authors: Song Yu Xiang
Published: March 2012

The alliance rules stated above based on the principle of data mining association rules provide a solution for detecting errors in the data sets. The errors are detected automatically. The manual intervention in the proposed algorithm is highly negligible resulting in high degree of automation and accuracy. The duplicity in the names field of the data warehouse has been remarkably cleansed and worked out. Domain independency has been achieved using the concept of integer domain which even adds on to the memory saving capability of the algorithm.
A Linear Algorithm of Spatial Straightness for Five Points
Authors: Meng Fan Wu , Xu Chun Guang , Hao Juan
Published: March 2012

It is a non-linear problem to evaluate the minimum zone spatial (3-D) straightness. Because of the disadvantages of evaluating spatial straightness error with traditional method, such as difficulty in solving the non-linear equation, the evaluating precision is lower. This paper develops a solution that can transform the non-linear problem into a linear problem. The solution can obtain more exact results than traditional method using results of LSC as initial conditions. This methodology can also be applied to the problems of computing the minimum circumscribed cylinder and the maximum inscribed cylinder. The effectiveness and efficiency of the novel approach are illustrated by two examples.
A Clonal Selection Algorithm Based Optimization of Activated Sludge Process
Authors: Du Xian Jun , Hao Xiao Hong , Yu Ping
Published: March 2012

A Clonal Selection Algorithm (CSA) was used in this article to the wastewater biological treatment activated sludge process optimization with the lowest operational costs by limiting total substrate discharge mass. A simulation result shows that the method is efficiency, and it also provides a new approach for other optimal control problem.
An Approach Dealing with Wrist Singularity of Six-DOF Industrial Robots
Authors: Huang Yu Chuan , Qu Dao Kui , Xu Fang , Zhang Wen Xiang
Published: March 2012

This paper presents an engineering method for analyzing the kinematics and inverse kinematics of a kind of Six-DOF industrial robots. Firstly, we build an engineering coordinate system for this kind robot, and then get expressions of closed-form solutions to both kinematics and inverse kinematics. From the process of deducing the expressions of closed-form solutions, we can analyze common singularities existing in workspace. Lastly, we design programs for both kinematics and inverse kinematics and simulate the movement of this kind robot. This method, compared with the structures of traditional solutions, is easier and understandability by leading into two conceptions- the position end and the tool end. What is more significant is that the robot can move safely when the wrist is under the singularity by using transitional stage. The transitional stage can make the tool of the robot move a line without join angel sudden change. The program solves the problem that all domestic industrial robots can not move when the wrist is under the singularity. This program is realized successfully on the welding robot of SIASUN Corporation.
A System Approach to Risk Management in the Age of Supply Chain Complexity
Authors: Yu Zhong Qiu
Published: March 2012

A risk management system is put forward to handle the risks raised from supply chain complexities. The system puts emphasis not only on risk precautions and control but on continuous development plan of the system as well to ensure the safety, continuity and high efficiency of the flexible and agile supply chain.
A Study on the Controllability of Deepwater Manifold during Launch through Pendulous Installation Method
Authors: Cao Song Rong , Yu Jian Xing , Zhang Gui Zhen , Ma Wei Lin
Published: March 2012

Pendulous Installation Method is fit for the installation of subsea facilities in Liwan 3-1 field. In this paper, non-liner coupling time domain analyses of the hull, the sling and the manifold are conducted, combined with an investigation into the critical factors affecting the lowering process, to improve the controllability of the lowering process and to make proposals about Liwan project.
A Supply Chain Collaboration Model Based on System Dynamics
Authors: Wang Wei Peng
Published: March 2012

This paper used the tool of system dynamics to build an evolutionary model of self-organization for the supply chain collaboration. By solving and the analysis of applications, we know that the two order parameters of supply chain collaboration and profitability determine the self-organized evolution of the system. If the supply chain collaboration has not reached the critical region, the deviation caused by random fluctuations will continue to decay until it disappears, and finally return to the original state. When the system parameters meet to the conditions of non-stability, random fluctuations will lead to the changes of the orderly structure of the system. The model reveals the evolutionary processes and nature of supply chain collaboration, and provides a basis for the development of the supply chain enterprises
Application of Apriori Algorithm in Diagnosis of Stroke
Authors: Zhang Wei Peng
Published: March 2012

To apply Apriori algorithm to analysis on association of stroke and hemorheology, and obtain the meaningful medical information. A large number of hemorheology data of patients with stroke were collected, including whole blood viscosity low cut, whole blood viscosity medium cut, whole blood viscosity high cut, blood sedimentation, hematocrit, plasma viscosity, thrombus, age, sex. Minimum support was 0.2 and minimum confidence was 0.8 as experience for analysis of association rules with apriori algorithm. Four strong association rules were screened by the objective and subjective interestingness, which contained the relation between the stroke and age, sex, whole blood viscosity, plasma viscosity. The results show that Apriori algorithm can be used to study the the diagnosis and prevention of stroke.
Application of Improved Analytic Hierarchy Process in Industrial Design Evaluating for Product Design
Authors: Li Pu Hong , Yang Li Na
Published: March 2012

Traditional evaluation methods of industrial design are more qualitative and hard to be applied to product development. Quantitative methods centralize the fuzzy evaluation. In this paper, an improved analytic hierarchy process (IAHP) is applied to evaluate industrial design, whose mathematical model and steps are described detailed. At last, an intelligent home service is used in a case of industrial design evaluation to explain the IAHP. This method can be improved to guarantee the accuracy of the evaluation results, but also be benefit for the implementation and outspread of product design.
Analysis of Trust Chain Transitivity in TCG
Authors: Zhang Ce , Cui Gang , Fu Zhong Chuan , Xu Yong Dong
Published: March 2012

Trust chain is fundamental technology of Trusted Computing facing many problems. This paper points out that trust chain is made of two stages, analyses different trust relation building mechanism of two stages, and also thinks and proves that trust loss during trust transitivity process comes from composition loss and so on, describes behavior of trust chain transitivity quantitatively. After discussing key factors affect the trust, this paper defines the general trust transitivity model and trust loss measurement function, and discusses trust loss of Stage1 in TCG.
Application of Fiber Optical Sensor in Thickness Measurement of Mechanical Seal
Authors: Zhai Jing Jing , Liu Ying , Gao Zhi , Lin You Bin
Published: March 2012

Due to film thickness is one of important parameters which has great influence on the performance of mechanical seal, the accuracy of thickness measurement is significant on mechanical seal condition monitoring and performance study. Some limitations were faced when common sensors were used under water of seal face. As new type sensor, FOS has many advantages such as smaller diameter, higher sensitivity, better anti-jamming ability, larger applicable scope than common sensors. In this paper, an enclosed and rotatable calibration test-bed was designed to imitate seal structure by which the feasibility and specifications of FOS application to measuring the seal film thickness had been discussed
ANSYS Simulation Analysis of the Tri-Axial Pipeline Magnetic Flux Leakage In-Line Inspection
Authors: Yang Li Jian , Su Yan Xiu , Gao Song Wei
Published: March 2012

In order to improve the detect performance of the traditional pipeline magnetic flux leakage(MFL) in-line inspection tools, the method of tri-axial pipeline MFL in-line inspection is advanced. By the three leakage magnetic field components: axial, radial and circumferential, the pipeline defects are recognized. Applying finite element method to build the simulation model of pipeline MFL in-line inspection, then proceeding 3-D simulation analysis. The three components of leakage magnetic field (axial, radial and circumferential) can be obtained by using ANSYS 3-D simulation, and the pipeline defects’ existence as well as the change of the defect’s size can be estimated by the three components’ graph. The simulation results indicate: By the ANSYS 3-D simulation, it proves that the tri-axial pipeline MFL in-line inspection can be achieved and the inspection can be used to improve the level of traditional pipeline MFL in-line inspection.
Design Method of Fly Ash Concrete Mix Proportion Based on Stable Paste-Aggregate Ratio
Authors: Sun Qing Wei , Zhu Han
Published: March 2012

According to problems with the paste to aggregate ratio increases significantly and lack of recognition to cementitious materials effect of fly ash in current design method of fly ash concrete mix proportion, the paper introduces a new design method of fly ash concrete mix proportion that completely bases on the stable paste to aggregate ratio. The thoughts of parts of cement replaced by equal fly ash or by excessive fly ash in traditional method are not used in this method that starting from the stable paste to aggregate ratio directly, and using the connections of water-binder ratio and concrete strength to deduce the calculation formula of fly ash concrete mix proportion with method of absolute volume. The paper sums up the calculation steps of this new method, and combines with an example to verify the feasibility and effectiveness of this method.
Customer Requirement Driving New Product Concept Generation Method Based on Naïve Bayes Cluster and RST
Authors: Lin Li , Guo Gang
Published: March 2012

Product concept generation and concept design are major activities for obtaining an optimal concept in new product development (NPD). A customer requirements driving new product concept generation method is addressed in this paper. This study proposes a new method to generate product concept, through which NPD team acquire customers’ requirement and product attributes. The new method is based on integrating of Naïve Bayes cluster and rough set theory (RST). It takes marketing strategy, business strategy into consideration, which makes new product development more effective compared with the traditional method. We believe that the proposed method will have a positive significance on the future new product development