bluuebunny/crossref_metadata_2025 huggingface dataset:
An Acoustic Study on Focus in Chinese: The Variation of Intensity
Authors: Wang Mao Lin , Huang Xue Jiao , Liu Yi Si , Li Jia Yun , Xiong Zi Yu
Published: June 2013

In this paper, the average intensity and the effect of focus on it for disyllabic words in Chinese is analyzed. It is found that, under focused condition, the average intensity of rhyme in the first syllable is comparatively great, while for the onset, due to intervocalic voicing, that in the second syllable is great. Focus has great effect on intensity. Under focused condition, the overall intensity will increase. The results from this study will be applicable in speech engineering.
Building and Clustering Analysis of Brain Functional Network in Acupuncture
Authors: Liang Dong Dong , Wang Hai Yang , Zhong Li Jun
Published: June 2013

Aimed at exploring the mechanism of acupuncture therapy, we develop functional brain networks using electroencephalogram (EEG) data, and use the methods cluster coefficient to analyze the functional networks. We develop the following result: during the acupuncture, the structure of network becomes tighter, the relativity grows stronger and the structure of the networks becomes complex. Our conclusion is that acupuncture is able to affect the firing properties of the central nervous system, and make the information transmission in the brain functional sections stronger.
The Research of Information Interaction between PHP and JavaScript
Authors: Zhang Zeng Ping , Li Shu Hua
Published: June 2013

As one HTML embedded scripting language, PHP (Hypertext Preprocessor) is a powerful computer programming language which is a remarkable tool to enhance the expression of webpage. JavaScript is a client-side technology that is processed by the client-side software. But PHP is completely the server-side scripting language. It is a critical issue that how to effectively complete the clients request and transfer the information between two languages. The form is adopted in this paper. And based on that, the information transfer between two languages is tested. The result proves that in web project the interaction via form is an effective and reliable method.
Research on General Design of HLA Based Communication Command Equipment Operation Simulation System
Authors: Chen Gang
Published: June 2013

The general design of HLA based communication command equipment operation simulation system is given to solve the difficulty of large equipment operation training. Firstly, the simulation system and its constitution are introduced. Secondly, two different federation runtime structures including single federation basic structure and multiple federations structure are designed according to system architecture. Thirdly, information interaction mode of training and FOM are concluded. Finally, two kinds of system application modes consisting of communication skill training and communication command training are presented.
Synthesis and Gas Sensing Property of Poly(m-aminophenol)
Authors: Tang Wei Ping
Published: June 2013

Poly (m-aminophenol) (PmAP) was synthesized chemically from aqueous solutions of the monomer meta-aminophenol in the initially basic medium by using ammonium persulfate as an oxidant. The synthesized PmAP was characterized by Fourier transform infrared spectroscopic. The film of PmAP was formed by dissolving PmAP in the dimethyl sulfoxide followed by solvent removel. The morphology of the film was obeserved by laser scanning confocal microscope (LSCM) and the ethanol sensing property was studied by testing the resistance of the PmAP film when purged air and ethanol alternately.
Hot Corrosion of T122 and 347HFG Steels in Na2SO4 Salts at 800 and 900 °C
Authors: Xu Chun Yu , Lee Dong Bok
Published: June 2013

The T122 steel (ferritic Fe-Cr-W alloy) and 347HFG stainless steel (austenitic Fe-Cr-Ni alloy) were corroded in the Na2SO4salt at 800 and at 900 °C, and their hot corrosion behavior was studied. They displayed good corrosion resistance owing to the formation of the protective Fe3O4and (Fe0.6Cr0.4)2O3scales. These oxides effectively suppressed sulfidation by the Na2SO4salt. The oxide scales that formed were thin and loosely adherent. The displayed good corrosion resistance was mainly attributed to the large amount of Cr in the alloys.
Prehistoric Effect of the Stamping Process on the Crash Analysis of an Automobile under Frontal Impact
Authors: Kim Se Ho
Published: June 2013

In this paper, a frontal crash analysis is carried out with a full vehicle model in order to investigate the influence of stamping effects of auto-body members on the crash characteristics of the vehicle. Stamping effects are considered for load carrying members such as the front side member and the rear lower. From the analysis result considering stamping effects, it is conformed that stamping history has to be considered for longitudinal members simultaneously that transfer the impact load under the frontal impact. Comparison of simulation result with experimental one also shows that the prediction accuracy of the crash analysis is remarkably improved.
Application of Full Factorial Design for Post Weld Heat Treatment Parameters on Duplex Stainless Steel UNS31803
Authors: Peasura Prachya , Duangsrikaew Narasak , Nansaarng Santirat
Published: June 2013

In this research, the post weld heat treatment (PWHT) of duplex stainless steel (DSS) was study. The PWHT process can be affected by differing parameters. The specimen was duplex stainless steel UNS31803 grade sheet of 10 mm thickness. The PWHT parameters were analyzed by application of full factorial design. The factors used in this study were PWHT temperature of 650, 750, and 850๐C with PWA time of 1, 2, 4 and 8 hours. The welded specimens were tested with micro vickers hardness and ferrite content testing according to ASTM E3-11 code. The result showed that both of PWHT temperature and PWHT time interaction on hardness and ferrite content for 95% confidential (P value < 0.05). The factor in most effect of hardness was the PWHT temperature of 850๐C and PWHT time for 4 hour at the hardness of 277.73 HV. The ferrite was the most ferrite content for 77.39% resulted in corrosion resistance due to suitable of PWHT temperature 750๐C and PWHT time for 8 hour. Finally, form PWHT process with the information was used choosing the appropriate for PWHT parameters to duplex stainless steel welds.
Experiment Design with Full Factorial in Gas Tungsten Arc Welding Parameters on Aluminium Alloy 5083
Authors: Peasura Prachya
Published: June 2013

This research was to study of gas tungsten arc welding (GTAW) welding parameters that affects to the mechanical properties of aluminum alloy AA5083 welding with GTAW. The full factorial design was experiment. The factors was study in type of polarity on alternating current (AC), direct current electrode negative (DCEN) and direct current electrode positive (DCEP), levels of welding current for 180,200,220 and 240 amp. The specimen to analyses the physical properties has microstructure and hardness of weld metal and heat affected zone. The result showed that type of welding current and levels of welding current interaction hardness at the level of confidence 95% (P-value<0.05). The factor hardness maximum of weld metal was alternating current at level of current 240 amp. and hardness of 136.53 HV. The factor hardness maximum of HAZ value was alternating current at level of welding 220 amp. and hardness of 169.43 HV. The welding parameters can result in increasing Mg2Si intensity in parent phase. It can also be observed that Mg2Si at the parent phase decreased due to high welding current in HAZ.This research can be used as information in choosing how to welding parameter for gas tungsten arc welding of aluminum alloy.
Synthesis of Closed Cell Aluminum Foam Using the Compression Method
Authors: Sopha Suthiphong , Nansa-Arang Santirat , Peasura Prachya
Published: June 2013

This research was to study the synthesis of aluminum foam with pure aluminum and its mechanical properties. The synthesis varied at 1% - 5% of TiH2 and mixed with 99.7 % aluminum powder size of 44 µm. then compressed by hydraulic at 25, 30 and 35 tons in the diameter 27 mm, high 60 mm molded. The Aluminum foams were produced by using heat treatment at 800 °C for 10 minutes then cool to room temperature and tested its mechanical properties. The results showed that aluminum foams which lowest bulk density (0.958 g/cm3) was 2% TiH2 synthesized, compressed at 35 tons and highest bulk density (1.393 g/cm3) was 1% TiH2 synthesized, compressed at 25 tons. Moreover, the highest compressive strength (847 kg/cm2) showed at 2% TiH2 synthesized and compressed at 35 tons. Thus, this research contributes to a body of knowledge that informs the application of aluminum foam.
Study on Compound Processing of Oil Tube Inner Wall Ion-Nitriding and the PCVD
Authors: Yin Zi Wu , Yang Jun Jie , Fu Le Rong
Published: June 2013

As the oil field enters into later phase of oil exploitation, more and stricter requirements have been put forward on oil tubes in terms of anti-corrosion performance in the oil exploitation, therefore, in this paper, a new compound processing method will be introduced, which carries out ion-nitriding and the plasma chemistry vapor deposition (PCVD) for oil tube inner wall. Through function extending of equipment specific to ion-nitriding of oil tubes, PCVD could also be carried out at the same time. Through the above compound processing, not only can the high hardness and the high-wearing feature of ion-nitrided oil tube be retained, but also the anti-corrosion performance can be improved substantially.
Effect of Increasing Wick Evaporation Area on Heat Transfer Performance for Loop Heat Pipes
Authors: Wu Shen Chun , Gao Jhih Huang , Huang Zih Yan , Wang Dawn , Huang Cho Jeng , Li Hsih Shing , Su Sheng Jwu , Lee Ya Wei
Published: June 2013

This study investigates the effects of increasing the evaporating area of wick in a loop heat pipe (LHP). This work attempts to improve the performance of the loop heat pipe by increasing the number of grooves and thereby the surface area of the wick. The number of grooves is increased from eight to twelve. Experimental results show that increasing the number of grooves not only increases the surface area of the wick but also enhances LHP performance. When the evaporating surface area increases by 50%, which corresponds to increasing the number of grooves from eight to twelve, the heat transfer capacity increases from 310W to 470W and the thermal resistance is reduced from 0.21°C/W to 0.17°C/W. According to preliminary measurements, increasing the number of grooves in the loop heat pipe is highly promising for improving the heat transfer performance.
Improving of Energy Density in Welding Arc and its Mechanism Study
Authors: Xiao Tian Jiao , Song Yong Lun , Hu Qiu Shi , Li Chao
Published: June 2013

As to traditional single electrode free welding arc, changes about energy density of the ionizing region in the center of arc column is not obvious with current increases due to structural limitations. In this paper, we developed parallel multi-electrode arc discharge torch which is based on the mechanism of self-magnetic contraction effect in welding arc, the torch effectively improve energy density of ionization region in non-melting inert gas arc, which is proved by experiments, and we discussed, effect of the pulse input energy and pulse frequency to energy density of the arc with parallel multi-electrode torch. This study demonstrated the approach of improving the energy density of arc ionizing region by self-magnetic pinch effect is feasible.
Study on Improvement of Surface Temperature Uniformity by Bubble Stabilization in Flat-Plate Heat Pipe Hot Chuck
Authors: Kim Dae Hyeon , Cha Kyung Il , Rhi Seok Ho , Lee Kye Bock
Published: June 2013

In the precision hot plate for wafer processing, the temperature uniformity of upper plate surface is one of the key factors affecting the quality of wafers. Precision hot plates require temperature variations less than ±1.5% during heating to 120°C. In this study, we have manufactured the flat plate heat pipe hot chuck of circle type (300mm) and investigated the operating characteristics of flat plate heat pipe hot chuck experimentally. Various screen mesh (40, 80, 120) were used as the structure and chamber was changed.
Investigation on the Electrochemical Delignification of Pulp with Syringaldehyde
Authors: Zhong Ya Jie , Kong Fan Gong , Wang Shou Juan , Xu Lei , Wang Wen Bo
Published: June 2013

The low molecular syringaldehyde was found to be a preferred natural mediator for pulp delignification in the electrochemically mediated delignification system (EMD-system). Electrochemical treatment of poplar kraft pulp with syringaldehyde results in the reduction of kappa number of about 28%, but the loss of viscosity is only 6.6%. During the process of electrochemically mediated delignification , the delignification efficiency is dependent on the voltage, the dosage of syringaldehyde , reaction temperature , pH value, reaction time and the composition of electrolyte solution. The optimum operating parameters of electrochemical delignification with syringaldehyde are obtained as follows: syringaldehyde 1mmol/l, voltage 1.8v, temperature 45°C, reaction time 4.5h, the pH-value in the range from 4.0 to 5.0, sodium sulfate 0.05mol/l.
Experimental Study on Instability Behavior of Thermosyphon and Grooved Heat Pipe with TiO2-Nanofluid
Authors: Shin Dong Ryun , Rhi Seok Ho , Cha Kyung Il
Published: June 2013

In the present study, TiO2-nanofluid with different volume ratio was used as working fluids of thermosyphon and grooved heat pipe to investigate working stability. The stability behavior of system was studied with various parameters such as volume concentration of nanoparticle, orientation, heat flux, and cooling media were investigated. Specially, the present experimental unstable working behaviors between TiO2-nanofluid and pure water were compared. In the present study, the TiO2-nanoparticles were dispersed into pure water with each of cross blended concentrations of 0.05%, 0.1%, 0.5%, and 1%. In the present study, the rate of growth of unstable disturbances is expressed in terms of temperature perturbation. The best stable operation was observed with thermosyphon of 0.5 % TiO2-nanofluid. The best operation state with nanofluidic TS was observed in the 90° inclination and α = 0.5. In the present study, the enhancement of heat pipe performance with TiO2-nanofluid is presented. The both heat pipes were fabricated from the straight stainless pipe with the inner diameter and length of 10, 500 mm, respectively.
Study on Formation Rule of Seismic Wavelet in Kelvin Medium
Authors: Hu Shi Li , Sun Chun Yan , Long Ping , Wang Guan Shi
Published: June 2013

Seismic wavelet plays an important role in the processing and interpretation of seismic data. And wavelet is also the premise of forward modeling and inversion of seismic wave. So it is important to study the formation process and formation rule of seismic wavelet. The viscoelastic properties of geologic body can be represented using Kelvin medium. The formation rule of seismic wavelet was analyzed using the mathematical model of propagation process of rectangle pulse in Kelvin medium. The experimental results have shown that characteristic frequency and band width were major frequency spectrum parameters causing the variation of waveform. The characteristic frequency and band width decreased with the increase of propagation distance. The characteristic frequency decreased in negative exponential law and became stable finally. The change of characteristic frequency and band width was related to the mechanical parameters of medium. With the increase of propagation distance, characteristic frequency decreased more slowly as elastic modulus increased than as viscous coefficient increased. The correlation coefficient increased with the increase of propagation distance, i.e., waveform became stable at last. Ratio of stability distance to characteristic wave length increased with the increase of elastic modulus and the decrease of viscous coefficient, then tended to become stable.
Antifreeze Compounds to Allow Survival at Temperatures below 0 C Deg.
Authors: Wiśniowski Zdzisław , Banach Mateusz , Roterman Irena
Published: June 2013

The possible mechanism protecting the organisms against the freezing is shown. The presence of highly soluble proteins with no specific interaction allows the organism surviving the temperature below zero Celsius degree. The role of hydrophobic core and its structure (recognized as accordant with the idealized one) appears to be critical for antifreeze function of protein. The possible application of the model for biotechnological preparation of compounds protecting the solutions against freezing is discussed.
The Effect of the Numerical Wind Tunnel Simulation Results of Arched Roof for Different Turbulence Models
Authors: Wang Cai Hua , Wu Jian Feng , Wang Wei Ling
Published: June 2013

Using the FLUENT software, this paper taking the wind load shape coefficient in the current code for the design of building structures as the comparison standard, have numerical wind tunnel simulation of the wind the surface wind pressure on arch roof. It focused on the effect of the different turbulence models on the numerical simulation, such as Spalart-Allmaras, Standard k ε, RNGk ε, Realizablek ε, Standard k ω, SST k ωand RSM. It provided reasonable reference for selection of turbulence model.
The Research and Design of a New Shield Cutter Wear Detection System
Authors: Guo Jing Bo , Wang Yong Jie , Liu Jin Zhi , Niu Jing Chuan
Published: June 2013

In this paper a new type shield cutter wear detection method based on ultrasonic thickness measurement theory was presented. Its working principle was introduced. Its hardware and software were designed. Compared with the existing detection methods, the new method is more accurate and more intuitive, and the method can also provide technical support for the project very well.
Neuro-Fuzzy Sliding Mode Control of Inverted Pendulum
Authors: Kherraz Khedoudja , Hamerlain Mustapha , Achour Nouara
Published: June 2013

In this paper we develop a robust controller based on sliding mode, neural network and fuzzy logic for the control of a class of under-actuated systems. The stability of the proposed controller is proved with the Lyapunov function method. Simulation results are made on an inverted pendulum.
Tensile Behavior Stability of Basalt and Polysulfonamide Composites in High-Temperature Flue Gas Purification
Authors: Wang Zhen Hua , Shen Heng Gen , Wang Li Bo , Liang Zhen
Published: June 2013

This study focused on the basic performance and analysis of a newly developed composite filter media used in high temperature filtration for bag house. It consists of basalt and polysulfonamide fibers. Thermal dimensional stability, heat resistance, air permeability and chemical corrosion resistance were tested to reveal the properties. Based on the experimental results, possible analysis showed that the new filter material had excellent performance in heat resistance, air permeability and acid corrosion.
Discrete Manufacturing Plant Quality Control System Based on SPC
Authors: Fang Ji Tao , Deng Wei Wei , Wang Hui
Published: June 2013

The discrete manufacturing plant is the basic of executing enterprises agile manufacture strategy, between enterprise upper management systems and manufacturing process control systems. The constitute structure and the software model of a workshop integrated quality control system is introduced by this paper. The methods and technologies of traditional workshop management cant meet current needs of enterprises. The field management and workshop information integration are given more and more attention by enterprises. In contrary to conventional SPC applications, manufacturing plant based unmanned manufacturing environments require automation of the quality control process. The system is suitable for the production process quality analysis and judgment in the discrete manufacturing plant environment. It can significantly increase the product quality and economic efficiency of enterprises.
Fiber Bragg Grating Force Sensing System with Temperature Compensation Scheme
Authors: Hsieh Min Yuan , Chiang Chia Chin , Chao Jian Cin
Published: June 2013

Current study presented a simple, temperature-insensitive fiber Bragg grating (FBG) force sensing system. It is based on an optical intensity modulation scheme with a corrugated long-period fiber grating (CLPFG) filter. The temperature effect of signal variation is about 6%. Through FBG temperature compensating scheme the average temperature sensitivity is improved obviously (0.06 mV/°C).
Energy Efficient Temperature Control with Particle Swarm Optimization for Smart Buildings
Authors: Kim Jeong Hyuk , Boo Chang Jin , Kim Ho Chan
Published: June 2013

In this paper, the energy efficient temperature control algorithm in smart buildings is proposed using particle swarm optimization (PSO). A control horizon switching method with PSO is used for optimal control, and the TOU tariff is included to calculate the energy costs. Simulation results show that the reductions of energy cost and peak power can be obtained using proposed algorithms.
Design of Real-Time Detection Software System Oriented Press Mounting
Authors: Lee Ming Gui , Wan Xiang Kui , Wang Pei Bin , Fan Wen Jun
Published: June 2013

The guide assembly procedure of the engine cylinder, design a software system for real-time monitoring to improve the engine performance. Used pressure sensor and AD acquisition card for acquisition and processing the pressure and displacement data; the software system for controlling and detecting ,which adopts mechanisms of multi-thread provided by Linux OS and programming techniques of Qt, is established on the computer, make the detection oriented press mounting; Completed the functional by modular design approach, the pressure and displacement data displayed as a curve and stored the diagnostic analysis results in database. Practice shows, the software system was proved to be stable working, easily operated, enhance efficiency greatly and guarantee the assembly quality.
General Cartridge Shape Detection System Design
Authors: Zhang Peng Jun , Bo Yu Cheng
Published: June 2013

According to present question about low precision detection of cartridge's geometric shape and not high level of automatic detection ,designer has designed multiple detection system about geometric parameters of the cartridge .Use the optical triangulation as a basic theory, and measure the cartridge's shapewall thicknessbottom thickness and so on at the same time by adopting Laser Range Finder Sensor with d high level of precision. Adopt servo motor to drive detection arm to realize the generality of all kinds of cartridge's detection. When test system collect data in real-time to make a report, it use a OPENGL tool to create the 3d graphics of objects being detected and see their defects directly as well as analysiscalculate the system's testing error. Experiment shows, that this method's fasterhigher level of detection can meet the demands of cartridge's geometric parameters.
MEMS: Its Distinct Advantages and some New Applications
Authors: Xie Hong , Chen Ying Jian
Published: June 2013

In this paper,we first discuss the main distinct advantages of MEMS as well as the important differences between MEMS and IC,then some latest research progresses on biomedical, optical and automotive applications of MEMS are briefly reviewed. Finally, possible future developments of MEMS are prospected.
Liquid Crystal Display Digital Clock Based on SCM
Authors: He Juan , Yuan Song Yue
Published: June 2013

The single chip microcomputer with digital clock has been designed based on AT89C52, through the design ideas of multi-function digital clock, we have described the system hardware, software and the realization process.The display design and implementation of a year, month, day, time and second is achieved using C language. And the simulation is used by Proteus software. By comparing the actual clock, we have found out the source of the error and have determined the method of adjusting error, and we reduce the error as much as possible, so we can achieve the allowable error range for a practical digital clock in this system.
Adsorption of BP-A onto Modified Zeolite and Main Influencing Factors
Authors: Ren Gang , Du Yao Ming , Yu Yan
Published: June 2013

Due to the hazard bringing to human, Bisphenol A pollution problem has drawn more and more attention in water treatment field. This study has developed a kind of modified zeolite as absorbent to remove it. Natural zeolite and chitosan were adopted in experiments. Results indicated that the modified zeolite bore more pore volumn and specific area than natural zeolite. To modified zeolite, natural zeolite and chitosan the adsorption of bisphenol was finished in 6-8h. Modified zeolite showed relatively excellent adsoptive capicity in batch and column experiments. The Freundlich isotherm was suitable in describing the sorption behaviour. Organic matters in water might be an important factor to debase the adsorption. To practice application velocity of 4.2-6.1 m·h-1 was suitable and the form of several column connected in serious was recommended.
A Determination of the Engineering Characteristics in QFD Based on Sensory Quality Evaluation
Authors: Zhang Dong Ling , Zhu Xiu Zhi , Xing Lian Qun , Yang Xue
Published: June 2013

Quality function deployment is an important product development method, dedicated to translating client requirements into activities to develop products and services. The determination of customer need and engineering characteristics include sensory quality evaluation. This paper presents a proposed method for the sensory evaluation methods in QFD planning system, and shows the application of the linguistic information processing model and its advantages. It involved several steps: gathering of sensory information from experts; computing a collective evaluation for each feature; computing collective evaluations for each object; dynamic aggregation; sensory evaluation and quality certification with global evaluation result.
A Product Innovation Study of the White Cane Engineering Creativity
Authors: Lin Rui Lin
Published: June 2013

Walking is very important in our daily lives. However, for blind people, current facility and environment are not convenient for them to walk. And due to some current problems, white canes require more attention from the society and need to be improved. This study combined the engineering creativity theory with the creative thinking process. And interviews and records were referenced for the design improvement of white canes. Secondly, techniques from the creative design methodology were applied. After discussing and making some adjustments, this study proposed an auxiliary tool within white canes offering hints in different frequencies based on actual conditions and requirements when blind people cross a street with traffic signs, in hopes of assuring their safety when crossing a street.
A Study of the Innovative Produce Design with the Laser Engraving Technology
Authors: Lin Rui Lin
Published: June 2013

This study applied the idea of innovative design to integrate design aesthetics into models and colors of products through brain storming to help proprietors develop new products, for the purposes of reaching the breadth of processing material applications and the depth of innovative product development and improving creativity and aesthetics of laser-engraved products. Secondly, the idea of knowledge management was applied in this study. Some experts lead the creative teams to propose delicate graphics and creative ideas based on proprietors requirements in innovative products, for systematical categorizations and analyses to build a design knowledge base as a future reference of innovative product design for enterprises to improve their competitiveness in markets.
A System Framework of Dynamic Coupled Quality Control Based on Complex Network
Authors: Diao Guang Zhou , Zhao Li Ping , Yao Yi Yong
Published: June 2013

Due to the demands of dynamic quality control in manufacturing process, a system framework of dynamic coupled quality control (DCQC) was proposed. The framework analyzed the coupled relation between quality attributes (QAs) of product, and established the weighted coupled network (WCN) model by defining the nodes properties formalized. According to the model, the coupled mechanism was analyzed and the monitoring technique of key quality points was put forward based on brittleness analysis and autocorrelation analysis. Furthermore, the dynamic quality improving mechanism was performed to realize the real-time control. Finally, an application analysis was presented to demonstrate the rationality and validity of the method.
Research on the Elements of Cost Management in the Engineering Project Construction
Authors: Niu Dong Xiao , Liu Tong , Zhou Shu Yi , Chen Ting Ting
Published: June 2013

In the process of engineering project construction, cost management should be closely around three big targets: cost control, quality control and progress control. This paper analyzes the interacting relationship of these factors, then discussing the elements of engineering cost management based on the earned value method. Finally, it proposed some corresponding suggestions and measures for the developing of cost management.
Inspiration of Food Packaging Design from Environmental Protection Materials
Authors: Liu Shao Hua , Shen De Kun , Hu Rui Ling
Published: June 2013

In today's society, with the widely promotion of green food, the philosophy of environmental protection has become the normal way of thinking for green packaging design. Call for green, advocation on green and low carbon life are becoming the inevitable trend of green packaging. Therefore, to use the superiority of environmentally friendly materials, to select the environmentally friendly materials which are natural, healthy and pollution-free and to fully apply environmentally friendly materials in food packaging design have become the goals that the green food packaging design must achieve.
Thermodynamic Analysis and Observation of Inclusions in 10PCuRE Weathering Steel
Authors: Liu Xiao , Liang Jing Long
Published: June 2013

The effect of RE on modifying inclusions of 10PCu weathering steel was studied by metallographic examination, SEM and electron spectroscopy. Thermodynamic calculation was used to analyze the formation of RE inclusions in 10PCu weathering steel. The result shows that aluminosilicate inclusions are modified to round RE complex inclusions after adding RE to 10PCuRE steel.
Effect of Ce on Microstructure and Mechanical Properties of 21Cr-11Ni Austenitic Stainless Steel
Authors: Liu Xiao , Liang Jing Long
Published: June 2013

The effect of Ce on structure and mechanical properties of 21Cr11Ni austenitic stainless steels were studied by metallographic examination, scanning electron microscope (SEM), tensile test. The results show that the proper amount of Ce can refine microstructure of austenitic stainless steel. Fracture is changed from cleavage to ductile fracture by adding Ce to austenitic stainless steel. 21Cr11Ni stainless steel containing 0.05% Ce can improve its high temerature strength, and the strength is increased 21.81% at 1073K respectively comparing with that of 21Cr11Ni stainless steel without Ce.
Static Characteristics Research of Bed with Three-Point Support Using Bionics
Authors: Zhang Hao , Shi Y.G.
Published: June 2013

In order to meet the requirement of small deformation of "T"-shaped bed with three-point support, based on the idea of meta-structure, making use of bionics, a new unit structures - hollow hexagonal prism is put forward. Through the analysis of the static characteristic of the different unit structures, it is shown that hollow hexagonal prism has strong advantages as unit structures. Thereafter, using hollow hexagonal prism of different cross-section circumcircle diameter and wall thickness as unit structures of "T" shaped bed, through the bed static characteristics analysis, the design principles of bed designed by the use of hollow hexagonal prism is summarized.
FEM Analysis of Hydraulic Dismantling Feasibility on Shaft-Sleeve Interference Fits
Authors: Shen Jian , Rao Shu Lin , Liu Guang Fu , Zhou Dan , Du Xiao Dong
Published: June 2013

According to different diameter of shaft, sleeve thickness, contact length and groove width, various FEM contact analysis calculations were carried out by orthogonal test method in two states -the initial state and the pressurized state- at the oil groove. Then, regression analysis method is applied for data processing to the total deformation and different positions of axial, radial deformation about the model. The analysis result shows that hydraulic dismantling feasibility can be achieved under the precondition of ensuring the strength requirements.
Research on Precise Constraint Reconstruction of Section Data
Authors: Zhang Xu , Zhang Hai Bo , Zhang Xue Chang
Published: June 2013

Since the features are not prominent and the algorithm is complex during whole reconstruction of section data, a step-by-step optimization reconstruction method is proposed. The order of reconstruction is optimized: line features are reconstructed firstly; Then arc features are reconstructed (constraints are satisfied between the arc and known lines); finally freeform features are reconstructed (constraints are satisfied between the B-spline and known lines/arcs). In this way, the reconstruction accuracy of the line/arc features is ensured in the first. Since freeform features have more freedom, it is convenient to be adjusted to meet the more constraints. Linear boundary constraints are constructed and the algorithm becomes optimization problem of the quadratic objective function under the linear constraints. The examples show that the reconstruction accuracy is improved greatly under satisfying constraints; the expected goal is achieved in real application.
A Simulation Platform for the Development of Vehicle ACC Systems
Authors: Zhang Su Min , Liu Hai Zhen , Han Fei , Wang Shan Shan
Published: June 2013

The paper presents a simulation platform for the development of vehicle adaptive cruise control (ACC) systems. The simulation platform has the ability to simulate traffic driving conditions and critical driving conditions and covers software-in-the loop and hardware-in-the-loop test capabilities. First, the system architecture of the simulation platform is introduced. All components of the platform are defined. Those components build the basis for the entire simulation. Special emphasis is given to the interaction between the simulated vehicle and its traffic environment. Second, this paper provides a radar sensor model framework and a vision sensor model framework to establish virtual sensor models to enable high-fidelity simulation on environmental sensing and perception for virtual development, testing and validation of ACC system. Finally, this paper gives an example of ACC under traffic conditions to verify the simulation platform.
Parametric Design System of Precision Forging Gear Die
Authors: Wang Zheng Ru , Zhang Qing Ping , Wang Cheng , Cai Gao Xiang
Published: June 2013

Powerful function in three-dimensional design, SolidWorks now has found a wide range of applications in industrial design. The parametric design system of precision forging gear die in this paper is developed with VB language based on SolidWorks environment. It is described in detail that the establishment of important components of gear die in the three-dimensional model, the relation between parameters of the interface and model, and parameters drive mechanism. Input parameters in windows of VB interface, are automatically calculated the precise parameters of the gear part and geometric dimensions of the important components of the gear die. According to the input arameters, the three-dimensional model of the gear die’s assembly drawings is generated on SolidWorks environment. The parametric design system is able to shorten the time for constructing the 3D model of the precision forging gear die and improve the quality of the die design.
BIM-Based Integrated Design Software for the Steel Structure of Industrial Plant
Authors: Chang Zhi Guo
Published: June 2013

The developed BIM-based integrated design software system is composed of two seamlessly integrated modules: structure calculation module and post-process module, the interface between the modules is clear. Using object oriented programming technology, a series of intelligent solid classes are abstracted to describe parts with deferent geometric information, structure properties and design requirements in real structure. Objects which are instances of these hierarchical C++ classes and logical links between them were integrated into the AutoCAD drawing database to construct a three-dimensional model. Several key functions including parametric shortcut modeling, frames analysis and member checking, three-dimensional solid construction, node design and editing, and drawing are implemented. IFC interface and the interface with common software are also implemented.
Study on Numerical Simulation and Performance of the Secondary Throttle Choke Used in the Oil Field
Authors: Zhao Hai Feng , Xu Yan
Published: June 2013

The numerical simulation method is adopted to calculate the flow field of the secondary throttle choke used in the oil field. The relationships among the flow of the secondary throttle choke, differential pressure and diameters are studied. The results of numerical simulation coincide with the experiment values, which verify that the method is correct. The results show that the flow increases with the increasing of differential pressure of the throttle choke at both ends, but the increment of the flow gradually decreases. The structure could maintain the flow not to change basically when differential pressure change in a certain scope. When the throttle diameter turns out to be small, the flow decreases, and flow-pressure curve gradually becomes aclinic. Compared with the first-class throttle diameter, the second-class throttle diameter is the main factor which effects flow changes.
Finite Element Analysis about the Influence that High-Speed Motorized Spindle Spindle System Material has on its Temperature Field
Authors: Zhang Ke , Ma Xiang Nan , Zhang Li Xiu , Yu Wen Da , Wu Yu Hou
Published: June 2013

The article has analyzed the changes of temperature of different materials of the spindle, and considered 170SD30 Ceramic Motorized Spindle and the same model Metal Motorized Spindle as the research objects, analyzed the inside heat source and heat transfer mechanism of the high-speed motorized spindle; used finite element software to set up the model of the motorized spindle, and did simulation and analysis. Verified by simulation, heat transfer rate of ceramic materials is slower than the metallic materials, in actual operation of the process, due to different materials have different heat transfer rate, so the temperature distribution of the different materials of motorized spindle are different. This conclusion provides the basis to solve motorized spindle temperature field distribution.
Analysis on the Error of Semi-Infinite Body Model in Roll Flattening Calculation
Authors: Yuan Zheng Wen , Xiao Hong , Xie Hong Biao , Zhang Shao Kun
Published: June 2013

To improve the accuracy of roll flattening calculation based on semi-infinite body model, a more accurate roll flattening model is proposed in this paper, which is derived basing on boundary integral equation method. The lateral surface displacement decay functions are established. Based on the boundary integral equation method, the numerical solution of the finite length semi-infinite body under the distributed force is obtained and verified by Finite Element Method (FEM). Based on the new model, the error of semi-infinite body model is analyzed in different length-diameter ratio and non-contact barrel length. Quantitative relationship and the scope of semi-infinite body model are obtained.
Design of Amplitude Transformer for Ultrasonic Vibration Milling System Based on ABAQUS
Authors: Gao Yan Feng , Wang Shun Qin , Lu Dong
Published: June 2013

Amplitude transformer is an important part of the ultrasonic vibration milling system. In this paper, a conical amplitude transformer is designed by the analytic method preliminarily firstly. Then its vibration modal is analyzed based on the finite element software ABAQUS in order to find the natural frequency of the amplitude transformer. At last the dimensions of the amplitude transformer with tools are modified through finite element method, so that an optimal vibration frequency is found, which makes sure that the amplitude transformer in the work vibration in longitudinal reliably.
Hybrid MPI + OpenMP Parallelization of Scramjet Simulation with Hypergraph Partitioning
Authors: Zeng Yao Yuan , Zhao Wen Tao , Wang Zheng Hua
Published: June 2013

As one of the most significant methods to study hypersonic flight vehicle, the numerical simulation of supersonic combustion ramjet has drawn an ever increasing attention at present. Nevertheless, the traditional serial simulation cannot satisfy the practical needs because of high calculation precision, avaricious memory overhead and overlong computation time. In this paper, we study on a general algorithm for scramjet simulation, and bring about parallelization by using a hypergraph partitioning algorithm and a two level hybrid parallel model. The whole computing domain is decomposed into several sub-domains based on hypergraph partitioning, and each sub-domain is assigned to a MPI process. A single step of computation operates in the inter loop level, where a compiler directive is used to split MPI process into several OpenMP threads. Finally, speedup and parallel efficiency of our hybrid program testing on a China-made supercomputer with 4 to 256 cores is compared with pure MPI program. And, the hybrid program exhibits better parallel performance than the pure MPI program in the main, roughly as expected. The result indicates that our hybrid parallel strategy is effective and practical in scramjet simulation.
Impact Factors Analysis of Buildup Well Test in Low Permeability Reservoir
Authors: Chen Xiao Hong , Liu Tong Jing , Liu Rui , Diwu Peng Xiang
Published: June 2013

With low permeability reservoir into the scale of development, well test gets further attention and application. But in the field application, well test interpretation model, interpretation methods of choice still exist more problems in low permeability and extra-low permeability reservoir. In this paper, with low permeability reservoir build-up well test process, we established mathematical model of the low permeability reservoir build-up well test, and deduce the analytical solution of the mathematical model. Using the deduced theoretical formula, analyze the impact factors. The results of the study show that: well storage coefficient, inner zone permeability and outer zone permeability are sensitive factors; skin coefficient is not sensitive factors.
Experimental Research on Belt Type of Precision Seed-Metering Device
Authors: Geng Duan Yang , Du Rui Cheng , Zhang Dao Lin , Dan Li
Published: June 2013

Based on the fact of low single seed plant rate, high seed damaged rate and low seed adaptability for conventional and mechanistic precision seed-metering device, a new belt type of seed-metering device was designed (patent No.20101020638.7). both of the 1/4 spherical shape and its size was first established by analyzing the working process of the seed-metering combination the material character of the tested corn seed, and the structure size 6mmX6mm of the seed scoop of this type of seed-metering was then determined by the frame test in agricultural lab, which was tested to own the good work performance. At last, the working adaptability tests were operated, the conclusion showed that the following character indexes were single seed plant rate 98.6%, repeated plant rate 6.3%, leakage plant rate 0.8% and seed damaged rate 0.05% when the size of seed-scoop is 8mmX12mm and the belt speed is1.05 m/s.
Designing Piezoelectric Harvesting Unit from Road Vibration
Authors: Sun Chun Hua , Shang Guang Qing , Zhang Yong Kang , Du Jian Hong
Published: June 2013

To open up a new way of green energy, the piezoelectric harvesting technology from road vibration is proposed. Research status at home and abroad is reviewed, some existed problems are pointed out. With the software of ANSYS, the arrayed space between piezoelectric vibrators and the material and thickness of substrate are chosen in the light of higher harvesting energy and better coupling properties. From the simulation results, can a unit of 280*280*20mm be determined. When it is embedded under 40mm asphalt concrete pavement, 1.785MW electric power can be harvested from each traffic lane and per kilometer. This shows that application of the piezoelectric harvesting unit has very nice optimistic prospects.
A Cosserat Rod Model of Multi-Symplectic Structure and its Numerical Treatment
Authors: Zhang Hou Bin , Jiang Mao Sheng , Wu Ying
Published: June 2013

In this paper, a Hamiltonian formulation of the Cosserat rod model is proposed. The model, based on the Cossert rod theory incorporates shear, elongation, flexure and twist deformation, is of multi-symplectic structure. A multi-symplectic algorithm is employed to discretize the equation and a numerical example is giving.
Vibration Analysis of Complicated Rotor-Bearing System by Beam Element and Strain Energy Method
Authors: Long Wu , Qi Yuan , Xin Liu
Published: June 2013

In this paper, a two-node beam element (as a simplified modeling approach) has been presented to investigate the vibration characteristic of rotor system with a complicated geometry. The decline of stiffness near the region of discontinuity is investigated on the basis of stain energy, and the conclusion is applied to the 2-node beam element analysis. In addition, the bending critical speeds and corresponding mode shapes of an integral rotor of 1000MW turbine have been investigated as an example. Verification results show that the simplified modeling approach by this 2-node beam element meets the accuracy requirement.
Review on the Dynamics of High-Speed Motorized Spindle System
Authors: Dai Xiao Ming , Wang Hong Jun , Han Qiu Shi
Published: June 2013

The research on the dynamics modeling in theory and experiment for the rolling bearing-motorized spindle system including bearing modeling and spindle-bearing system modeling is reviewed. The main factors influencing the motorized spindle system dynamics are analyzed combined with the pratical engineering, which include thermal characteristics, high-speed effects and electromechanical coupling. The methods for dynamics modeling including the transfer matrix method and finite element method are related. Finally, the research directions on the dynamics of rolling-bearing motorized spindle system are forecasted.
Structural Non-Probabilistic Reliability Analysis Based on Imperialist Competitive Algorithm
Authors: Hao Yan , Meng Guang Wei , Li Feng , Zhou Li Ming
Published: June 2013

A structural non-probabilistic reliability analysis model based on the imperialist competitive algorithm (ICA) is proposed. In practical engineering, the independent variables of the limit state function are usually the structural responses, which, together with the gradients, need to be resolved. The proposed model could find out the global optimum solution through the competition among the empires, without any additional gradient information, showing a good feasibility in many kinds of optimization problems. When utilizing the penalty function method, the constraint domain is enlarged to the failure domain, overcome the difficulties of searching the optimum due to the former narrower constraint domain. A numerical example verifies the high precision and good feasibility of the model.