bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on a New-Style Air-Condition System Driven by Combination of Exhaust Heat of Engine and Solar Energy
Authors: Zhong Ji Xiang
Published: February 2011

Comprehensive utilization of Exhaust Heat of Engine and Solar Energy is a revolutionary technique. There is seldom literatures focusing on this scope. The mechanical compressor using chemical refrigerant principle is the core driving component of traditional car air conditoner. However, the issues such as engergy-comsuming, transmission efficiency, pollution etc. remains a great challenge. A new driving scheme is put forward in this paper, in which primary exhaust heat sources is used to drive the air conditioner. There requires quite a few moving parts in this new scheme. If the low power engine is mounted in the car, addional solar energy can be combined to drive the air conditioner. The principle of the new air-condition system and its structure are illustrated in this paper.The automatic control system for this new Air-condition System driven by combination of Exhaust Heat of Engine and Solar Energy is described in detail as well. This new system is energy-conserving, environment-protective, low-carbon, and high efficient. It has a promising application prospect.
Interoperable STEP-NC Enabled Process Planning for Intelligent Machining
Authors: Qiu Xiao Li , Xu Xun , Liu Xiao Jun
Published: February 2011

As the next generation of CNC standard, STEP-NC can be used to solve the current problem of information integration in digital manufacturing. With the characteristic of the STEP-NC data structure, the key technologies to approach the process planning by workingstep features based on STEP-NC are studied. Geometric information translating, feature information extraction, process planning, STEP-NC file generating are all involved. The detail of the lexical analysis of the AP203 files, the operating of the geometric information database and the translating from AP203 to geometric information database are studied. Applied the STEP-NC enabled technology, the system of process planning by features is established. The conclusion is useful for 3D process planning and the intelligent machining. The interoperable and integrated information between CAD/CAM is reached.
Model Based Design and Implementation of Hierarchical and Distributed Control for Robotic Flexible Manufacturing System Cells Using Petri Nets
Authors: Yasuda Gen’ichi
Published: February 2011

This paper deals with the modeling and control of discrete event robotic manufacturing cells using Petri nets, and proposes a methodology of model based design and implementation of hierarchical and distributed control. Hierarchical Petri net models are adopted; conceptual Petri net model and detailed Petri net model. The overall detailed Petri net model is decomposed into local Petri net models which are used by the local machine controllers. The upper level station controller coordinates the distributed local controllers so that the aggregate behavior of decomposed subnets is the same as that of the original Petri net. The overall control system is implemented using multithreaded programming based on Petri net based multitask processing. Simulation experiments show that the distributed Petri net model based control system can perform the overall multitask processing control by coincidence of the behavior of the real system with the local Petri net models.
Design and Implementation of Debugging Structure in Full-Custom CPU
Authors: Zhang Ping , Xing Zuo Cheng
Published: February 2011

With the development of integrated circuit technology, it is more and more difficult for debugging circuits. Generally, to achieve a powerful debugging capability of circuits is often at the expense of larger cost of hardware overhead .This paper propose a method of debugging structure designed in full-custom CPU based on scan-set testability methods and combed with the boundary-scan technology. This debugging structure can reduces much scan chains hardware overheads and is applicable to all general-purpose CPU chips. Moreover, it owns a powerful debugging capability which is observing and controlling the internal registers of circuits from JTAG port. This structure only increases the difficulty of the circuit logic design, but greatly decreases the cost of hardware.
Graphic Representation on Algebra Concepts of University Students Based on Clustering Approach
Authors: Lin Yuan Horng , Yih Jeng Ming
Published: February 2011

The purpose of this study is to integrate a knowledge management which provides graphic representation on concept structures based on clustering technique. The polytomous student problem chart (S-P chart) is adopted to classify students into proper learning styles according to response pattern with caution index and score. Furthermore, weighted polytomous ordering theory (OT) is used to construct graphic concept structure of each learning style. The integration of polytomous S-P chart and weighted polytomous OT could help knowledge management for students. In the study, the empirical data is the assessment of linear algebra from university students. The results show that each learning style has its own features of cognitive characteristics. In short, the integrated methodology can improve knowledge management for students more feasible. Finally, some recommendations and suggestions for future studies are discussed.
Comparison of Silk Structure and Fabric Testing Performance of Ordinary and Puffed Tussah Silk
Authors: Jiang Shu Yuan
Published: February 2011

The ordinary silk was puffed, the morphological structure of puffed silk was changed by testing, long diameter was shorter, short diameter was thicker, and the length to diameter ratio was changed. The properties of ordinary and puffed silk fabric were tested and compared, some performance of puffed silk fabric improved, means that the puffing treatment of Tussah silk is a useful way which can improve the performance of fabric and develop the silk product.
Design and Simulation of Capacitive Micromechaned Gyroscope
Authors: Shi Yun Bo , Zhao Xing Juan , Tang Jun , Liu Jun , Wang Rui Rong
Published: February 2011

By researching and investigating the structure of capacitive gyroscopes, A novel capacitive micromachined gyroscope is proposed and the structure is designed. The method of electrostatic comber drive, capacitive detection of bar structure is used for the structure, and these make the gyroscope high sensitivity. The main air damping of the drive mode and detection mode is slide film damping, it is possible to make the gyroscope achieve high Q-values at atmospheric pressure. The decoupled gyroscope is designed, too. By large numbers of simulation analysis， frequencies of the first six steps mode are gained, nature frequencies of drive mode and sense mode of gyroscope are a close match, and rationality of the structure is validated. At last, the structure encapsulated is presented.
Temperature Field Simulation Analysis of High Temperature Box
Authors: Qian Wen Xue , Yin Xiao Wei , Xie Li Yang
Published: February 2011

High temperature box is wildly used in many fields. Alone with the increasing of the requirement temperature, the temperature of it becomes more and more high. But it is difficult to test the temperature when the temperature is greater than 2000°C. In this paper, the thermal field of high temperature box is analyzed by finite element method, the result show that the temperature satisfies the design objects.
Analysis of Self-Balance Characteristics of OPOC Engine
Authors: Huo Ping , Wang Jian Ping , Sun Qiu Yan
Published: February 2011

Considering the structure feature and working principle of Opposed Piston Opposed Cylinder engine, mathematical model of kinematics relationship for internal-external piston is build. Using ADAMS software to process kinematics characteristics simulation study and comparing the simulation results with traditional diesel engine, it indicate that the OPOC two-stroke engine has better self-balancing character, less kinematics inertial force and cylinder lateral pressure, and is helpful in reducing the frictional power consumption, and improving the noise-vibration smoothness.
Design and Application of Automatic Inspection System of Car Seat Performances Based on Virtual Instruments
Authors: Zhong Xiao Qin , Shi Gang , Chai Shao Kuan , Hu Ting
Published: February 2011

According to the requirement of car seat performances, an automatic inspection system of car seat performances based on virtual instruments is developed and put into real production. The paper introduces the hardware configuration, module functions, implementation and application of the system. The system has high accuracy, reliability and stability with multi functions.
Comparison of Methods for Time-Frequency Analysis of Oil Whip Vibration Signal
Authors: Xiang Ling , Sun Hao
Published: February 2011

The signal analysis is important in extracting fault characteristics in fault diagnosis of machinery. To deal with non-stationary signal, time-frequency analysis techniques are widely used. The experiment data of oil whip vibration fault signal were analyzed by different methods, such as short time Fourier transform (STFT), Wigner-Ville distribution (WVD), Wavelet transform (WT) and Hilbert-Huang Transform (HHT). Compared with these methods, it is demonstrated that the time-frequency resolutions of STFT and WVD were inconsistent, which were easy to cross or make signal lower. WT had distinct time-frequency distribution, but it brought redundant component. HHT time-frequency analysis can detect components of low energy, and displayed true and distinct time-frequency distribution. Therefore, it is a very effective tool to diagnose the faults of rotating machinery.
The Direct Oxidation of CO on the Highly Active Pt-Skin Pt3Ni(111) Surface: a First Principles Study
Authors: Yang Zong Xian , Yu Xiao Hu , Lu Zhan Sheng , Dai Xian Qi
Published: February 2011

The catalytic properties of the Pt3Ni(111) surface with Pt-skin [denoted as Pt-skin Pt3Ni(111)] are investigated through the adsorption and oxidation properties of CO on the Pt-skin Pt3Ni(111). It is found that, on the Pt-skin Pt3Ni(111), the adsorption of CO and O is weaker than that on the Pt(111) due to alloying with Ni. The CO reacts with the coadsorbed O atom and forms a CO2 species which binds weakly to the surface and can easily desorb from the surface, indicating that the CO can be oxidized directly on the Pt-skin Pt3Ni(111).
Base Pressure Effects on the Structure, Surface Roughness and Electrical Resistivity of Mo Thin Films by RF Magnetron Sputtering
Authors: Jeng Ming Jer , Lei Wen Kai , Ku Wei Lun , Chang Liann Be , Wu Ching Wen , Lu Yong Tian , Hu Sung Cheng
Published: February 2011

Molybdenum (Mo) thin films were deposited on soda-lime glass substrate by using RF magnetron sputtering. As is well known, base pressure in sputtering is a processing parameter for preparing high quality Mo films, in addition to RF power and working pressure. The structure, surface roughness and electrical resistivity of Mo thin films were investigated at three base pressures of 1.8×10-7, 5.8×10-7and 2.7×10-6 torr. Experimental results indicate that the Mo films deposited at a low base pressure of 1.8×10-7 torr exhibit a low electrical resistivity of 8.910-6 –cm, a low root mean square value of roughness of 4.92nm and a stronger peak intensity of (110) plane than that of the other two pressures. This finding suggests that Mo films sputtered at a low base pressure have higher crystallinity, larger grain size, smoother surface morphology and lower electrical resistivity than those sputtered at a high base pressure.
A Study of Mixed Media Art Creation for Children’s Picture Books
Authors: Lin Rui Lin
Published: February 2011

The purpose of this study is to create art media of picture books for children using mixed media coatings. In the beginning, through document analysis, the types, characteristics, and styles of current picture books were discussed as references for the creation. Then through interactive teaching with discussions, the teacher and students started to plan for the content and the storyboard of the picture book. And the graphic script had been discussed and revised several times. And delicate sketches were completed, scanned, and edited with the software Photoshop. Finally, the art creation for picture books using both hand drawings and computer graphing with mixed media was completed.
The General Solution for Torsional Circular Shaft of Cubic Quasicrystal
Authors: Zhao Bao Sheng , Shi Jia Lian , Zhao Ying Tao , Gao Yang
Published: February 2011

Gregory’s decomposed theorem of isotropic plate is extended to investigate torsional circular shaft of cubic quasicrystal with homogeneous boundary conditions, and the theory of equivalence that Cheng’s refined theory and Gregory’s decomposed theorem is extended to the cylindrical coordinate. The general solution of torsional circular shaft on cubic quasicrystal with homogeneous boundary conditions is proposed on the basis of the classical elasticity theory and stress-displacement relations of cubic quasicrystal without ad hoc assumptions. At first expressions are obtained for all the displacements and stress components in term of some 1D functions. Using Lur’e method, the exact equations were given. And the exact equations for the torsional circular shaft on cubic quasicrystal without surface loadings consist of four governing differential equations: two harmonic equations and two transcendental equations. Using basic mathematic method and the general solutions, an example is examined.
Shell Body Nose Forming by Rotary Swaging Process
Authors: Jang Jeong Hwan , Joo Byeong Don , Mun Sung Min , Moon Young Hoon
Published: February 2011

Studies on the forming characteristics by a rotary swaging process using the sub-scale specimens have been carried out to obtain a shell body nose of desirable quality. To analyze the changes of the nose thickness and length at the respective reduction of inside diameter, the finite element simulations were carried out. As a result, the desired target dimension is satisfied with the diameter reduction of more than 64 % for the given preform. The thickness of nose area increased up to 56.1 % from initial thickness of 2.62 mm to 4.09 mm after swaging. The values of the hardness before and after swaging were 208 HV and 325 HV, respectively. To analyze the dimensional changes (length and thickness) of nose area with decreasing inside diameter, the rotary swaging test was carried out for two different diameter reductions such as 65 % and 67 %. The lengths of nose area for the diameter reductions are 11.79 mm in 65 % and 12.53 mm in 67 %, respectively. At the diameter reduction of more than 67%, the crack occurs when the localized strain hardening reduces ductility in internal area. Therefore, the nose area should be formed from 64% to 67% reduction in target inner diameter.
The Multi-Objective Optimization Design of Leaf Spring of few Piece Variable Cross-Section
Authors: Fan Qin Man , Fan Qin Man
Published: February 2011

Being the ability of global optimization, MOPSO algorithm have some virtue such as high calculate velocity, good solution quality, great robustness, and so on. In allusion to a leaf spring of few piece variable cross-section, its multi-objective optimization mathematical model was built regarding minimum mass and minimum stiffness deviation as sub-objective functions. Taking the leaf spring of front suspension of a light truck as an example, the Pareto optimal solution set of optimization problem was obtained by using MOPSO algorithm. The optimization results show that the mass of the leaf spring reduced by 24.2% and the stiffness deviation is only 0.32% after optimization by using MOPSO algorithm.
Influence of Substrate Material on Tensile Behavior and Fracture Characteristics of SiC by Chemical Vapour Deposition
Authors: Liu Cui Xia , Yang Yan Qing , Luo Xian
Published: February 2011

SiC filament was prepared by Chemical Vapour Deposition method using W wire as the substance material. The combination between W wire and SiC became a key element influencing tensile strength of SiC. In this paper, tensile fracture morphology of SiC filament was analyzed, from which interface combination between SiC and W wire was discussed under different deposition temperature and the influence of interface layer’s thickness on final tensile of SiC filament was given. How to control the thickness of interface layer is a key factor for improving performance of SiC filament.
Numerical Simulation of Residual Stress Distribution Produced by Shot Peening
Authors: Zeng Yuan Song , Huang Xia , Cao Li Juan , Li Shou Ju
Published: February 2011

The shot peening process is largely used for the surface treatment and forming. The residual stress distribution developed within material may induce distortion of the component. The residual stress formed during the shot peening process is simulated numerically. The elastic-plastic constitutive model is adopted to describe the plastic behavior of the target material. The influence of shot peen speed on residual stress and deformation distribution is discussed.
Convolution PHD Filtering for Nonlinear Non-Gaussian Models
Authors: Yin Jian Jun , Zhang Jian Qiu
Published: February 2011

A novel probability hypothesis density (PHD) filter, called the Gaussian mixture convolution PHD (GMCPHD) filter was proposed. The PHD within the filter is approximated by a Gaussian sum, as in the Gaussian mixture PHD (GMPHD) filter, but the model may be non-Gaussian and nonlinear. This is implemented by a bank of convolution filters with Gaussian approximations to the predicted and posterior densities. The analysis results show the lower complexity, more amenable for parallel implementation of the GMCPHD filter than the convolution PHD (CPHD) filter and the ability to deal with complex observation model, small observation noise and non-Gaussian noise of the proposed filter over the existing Gaussian mixture particle PHD (GMPPHD) filter. The multi-target tracking simulation results verify the effectiveness of the proposed method.
Parametric Simulation Modeling Approach for Mobilization Production Plan
Authors: Wang Guo Xin , Wang Lu , Yan Yan , Chen Su Min
Published: February 2011

Mobilization production is an effective model to respond to emergency situation, which can organize all kinds of production resources and enlarge production capacity in short time. The design of mobilization production plan needs numerous data and to be revised repeatedly. Therefore, it is very difficult for the traditional design approach to work out right results and forecast the performance of mobilization production plan. A parametric simulation modeling approach is presented in this paper to solve those problems. The approach separates the control logic from modeling elements through creating simulation database, typical model base and control logic base. A model generator is built to automatically create the finial simulation model based on those kinds of bases. The simulation software of AutoMod is applied to realize the modeling process above. Finally, a case study is presented to illustrate the application of the proposed approach.
Resolution and Analysis for Quasi-Stable Frost Forming Model
Authors: Wang Jun , Wang Hai Xia
Published: February 2011

The quasi-stable state model of one-dimension frost forming process is introduced and solved using numerical methods. The effect of the velocity and relative humidity of wet air and the temperature of the cold surface on frost forming process is discussed in length. The calculation results indicate that interfacial and inner sublimation jointly contribute to frost forming process. Higher velocity, higher relative humidity and lower the cold surface temperature correspond faster frosting. There is a critical point on the increment of frost density, after which deeper frosting dose not necessarily lead to acceleration of heat transfer deterioration therein.
Ethylene Polymerization by Thioether Bridged Dinuclear Zirconocene Complex
Authors: Nie Yu Jing , Yang Ming
Published: February 2011

The thioether bridged Zirconocene complex [(C5H5)Cl2ZrC5H4CH2CH2]2S has been synthesized by treating the dilithium salts of the thioether bridged cyclopentadienyl ligand with two equivalents of C5H5ZrCl3(DME) and characterized by 1HMNR and elemental analysis. Homogenous ethylene polymerization by this complex has been conducted systematically in the presence of methylaluminoxane (MAO). The influence of the molar ratio [MAO]/[Cat], the catalyst concentration, time and temperature have been studied in detail. The catalytic activity of 1 is 6.46×105 g PE/mol•Cat•h. Higher temperature is favorable for increasing the catalytic activity for 1. A high concentration of the catalysts drops the catalytic activity as well as the molecular weight of polyethylene for the complex. High temperature gel permeation chromatography (HT-GPC) proves the production of polyethylene with a broad molecular weight distribution (MWD).
A New Numerical Method for the Riesz Space Fractional Diffusion Equation
Authors: Ding Heng Fei , Zhang Yu Xin , He Wan Sheng , Yang Xiao Ya
Published: February 2011

Firstly, using matrix transform method, we transform the Riesz space fractional diffusion equation into an ordinary differential equation, and get its analytic solution. Secondly, we use (2,1) Pade approxiation to the exponentinal matrix of the analytic solution and obtain a new difference scheme for solving Riesz space fractional diffusion equation. Finally, we prove that the difference scheme is unconditionally stable.
The Investigation of Conformational Change and Water Permeability of Poly(acrylic Acid)-Graft-Polypropylene Membrane in Cross-Flow Microfiltration
Authors: Liu Yan Jun , Lv Chun Ying , Yang Jia
Published: February 2011

A series of poly(acrylic acid)(PAA)-graft-polypropylene membranes was prepared by UV-irradiation.The water flux of original PP membrane shows independence on pH and a linear increase with the rise of operating pressure. While the grafted membranes present great sensitivity to pH and a nonlinear relationship with operating pressure. As pH rises, grafted membranes are observed a rapid drop in flux since grafting PAA chains change from coiled to extended and then cause the decrease of pore size. It is evaluated by the change ratio of pore size that pH-sensitivity of grafted membranes increase with the rise of grafting degree till 17%. Furthermore, during Cross-flow microfiltration, the grafting chains on membrane surface tend to be bent at high operating pressure, so that membrane pores are partly blocked to cause a nonlinear rise of flux with operating pressure. In a conclusion, water permeability of grafted membranes greatly rely on the conformational change of grafting chains. These conformation alteration caused by pH or pressure may provide a new approach to control membrane filtration behaviors.
Production of Activated Carbon from Ligin: Optimization Using Response Surface Methodology
Authors: Jiang Li , Ma Fei , Gu Ai Jun , Zhang Li Jun
Published: February 2011

Activated carbon（AC）were prepared from lignin by chemical activation with sodium hydroxide（NaOH）. The influence of activation temperature，activation time and impregnation ration on the BET surface areas were investigated. Based on the central composite design (CCD) and response surface methodology(RSM)，the optimized technological parameters were as follows: temperature 751°C， time 57min and impregnation ration 2.06, BET surface areas was up to 1437.20 m2/g.The adequacy of the model equation for predicting the optimum response values was verified effectively by the validation.
Application of Imprinted Functionalized Silica Gel Sorbent for Selective Removal of Cadmium (II) from Industial Wastewaters
Authors: Li Zhan Chao , Fan Hong Tao , Sun Ting
Published: February 2011

This study investigated the application of an ion imprinted polymer (IIP) with (3-mercaptopropyl) trimethoxysilane (MPS) functionalized the surface of silica gel as a potential sorbent (IIP- MPS/SiO2) for the selective removal and recovery of Cd2+ from industrial wastewaters. IIP- MPS/SiO2 was prepared by a sol–gel method and characterized by IR. Batch studies were performed to evaluate the adsorption process and it was found that the sorbents were found to adsorb selectively Cd2+ in the presence of Co2+, Ni2+, Zn2+ and Cu2+ interferences in the same medium. IIP-MPS/SiO2 sorbent show the selectivity order under competitive conditions: Cd2+ > Co2+ > Ni2+ > Zn2+ > Cu2+. The removal rate of IIP- MPS/SiO2 sorbent for Cd2+ was about 80 % from synthetic wastewater and mine wastewater spiked with 10, 20 and 50 mg•L-1 Cd2+. This work proved that can IIP-MPS/SiO2 sorbent be used as an efficient adsorbent material for selective removal of Cd2+ from wastewaters.
Analysis of Influence Factors on Anti-Rutting Performance of Fiber Asphalt Mastic and Fiber Asphalt Mixture
Authors: Chen Bao , Wen Chang Fu
Published: February 2011

In order to improve the rutting performance of asphalt mastic and asphalt mixture, taking rutting factor, phase angle and dynamic stability as the target, the influence on anti-rutting performance of asphalt mastic and asphalt mixture and its variation law are systematically studied by filler-asphalt ratio, filler type, fiber type, fiber content, aging degree and gradation type using dynamic shear rheometer test, rutting test and rotating thin film oven test. The results show that: The filler-asphalt ratio should not be more than 1.4. Fiber to improve the anti-rutting performance of asphalt mastic is better than cement and mineral powder. The improvement of Dolanit fiber on anti-rutting performance of asphalt mastic and mixture is the best. With temperature rises and fiber content increases, the influence of fiber on anti-rutting performance of asphalt mastic decreases. As fiber content increases, the anti-rutting performance of asphalt mixture first increases and then decreases. The anti-rutting performance of asphalt mastic after aging is better. The anti-rutting performance of SMA asphalt mixture is the optimal. Research results have great guiding significance for fiber type selection, fiber content selection and improving asphalt pavement performance.
Preparation of Steel Slag Adsorbent and its Removal Phenol Property
Authors: Liu Sheng Yu , Gao Jin , Xu Yuan Yuan , Lu Cheng Wei , Yang Yi Jin
Published: February 2011

Steel slag is a industry solid waste which come from steel making factory，and is easy to solid-liquid separation, so it posses some adsorption capacities and can be used as adsorbent. Adsorption phenol onto steel slag was investigated by the oscillating adsorption experiments and the effect of different operating parameters on these adsorption processes, such as initial concentration phenol and the pH value were studied. The surface characterization were gained by SEM, X-ray diffraction, IR Spectroscopy and BET.
Determinition of Optimal Coiling Temperature and Cold Reduction Ratio of Adding P High Strength if Steel
Authors: Wang Min Li , Zheng Zhi Wang , Xiao Li
Published: February 2011

Hot rolled adding P high strength IF steel sheet was used to study the effect of coiling temperature and cold reduction ratio on the microstructures , mechanical properties and textures of experimental steel. The experimental results showed that the recrystallization has finished after cold rolling followed diffrenent cold reduction ratio and coiling temperature was from 550 °C to 600 °C under experimental condition. When the cold reduction ratio was increased, the grain changed fine and uniformity under diffrenent coiling temperature; The yield strength, tensile strength and elongation percentage were approximate 160 MPa, 345 MPa and 35.0 % respectively, under coiling temperature 600 °C and diffrenent cold reduction ratio condition, the plastic strain ratio r value and the strain hardening exponent n value were reached the maximum, respectively, the r value was approximate 1.5, the n value was approximate 0.30. When the coiling temperature was increased, the {111}＜110＞ texture of α skeleton lines was stronger. Therefore, the suggested the optimal coiling temperature is 600 °C, cold reduction ratio was 60 % to 70 %, and it obtains optimally match of high strength and punching property.
A Study of Mixed Media Creative Artwork Designed with Computer Software
Authors: Lin Rui Lin
Published: February 2011

A case study was conducted to explore the mixed media creative artwork, a picture book hand-drawn by an 8-year old child. First, the documentary analysis of materials related to children's picture books was conducted to understand the features of materials and the essence of stories. After rounds of discussion teaching, the parents guided the author to create a story, characters, items, and sets, and to arrange colors. This process took 6 months. 14 hand-drawn works were completed. Then those drawings were scanned with Photoshop and the layout was arranged with Adobe Illustrator. Finally, discussions of the problems encountered during the process of creation were conducted and suggestions were proposed.
Study of Strain and Temperature Simultaneous Measurement Technology Based on Sampled Grating
Authors: Zhu Dan Dan , Wang Peng
Published: February 2011

Choice appropriate parameters of the sampled fiber Bragg grating base on the influence of the sampled fiber Bragg grating length, sampling rate, refractive index modulation depth and sampling period to the reflective spectrum of sampled fiber Bragg grating. Get the reflective spectrum of sampled fiber Bragg grating by using transmission matrix method, form the sampled fiber Bragg grating suitable for sensing. Get the strains of the sampled fiber Bragg grating and the data from Temperature-sensor through simulation experiment, then determine the sensing-parameters A, B, C, D by using SPSS13.0 statistics software in regression analysis. Strain measurement ranged from 0με to 1800με，temperature measurement ranged from 0°C to 180°C.
Improvement of a Novel MEMS Bionic Vector Hydrophone
Authors: Zhang Guo Jun , Xue Chen Yang , Wang Xiao Yao , Xiong Ji Jun , Zhang Wen Dong
Published: February 2011

A novel MEMS vector hydrophone with bionics structure was introduced in 2007. As the acoustic-electric transducer infrastructure and the acoustic package of hydrophone have been optimized, the performance of the hydrophone has been greatly improved compared with the previous. This hydrophone calibration was finished in National Defense Underwater Acoustics Calibration Laboratory of China. According to the test results, the sensitivity of the hydrophone is -165dB（including pre-amplification 20 dB）, the frequency response ranges from 20Hz to 2kHz (±5dB). And this hydrophone has a good directional pattern in the form of "8"-shape.
Optimization of High Performance Engineering Plastics in Thin Wall Part Injection Molding
Authors: Su Te Li , Kung Fu Chen , Kuo Yu Lin
Published: February 2011

The purpose of this study is to improve the qualities of thin wall part injection molding using polypropylene. The shape of injection molding products is getting more and more complex now, and the requirement for accuracy is also getting higher. The traditional trial and error method and rules of experience cannot be used well at all. This study applied Taguchi method and grey relational analysis to optimize the injection molding process for obtaining multiple quality characteristics of thin wall parts. The experimental results verify the reliability of optimum conditions via confirmation experiment.
Study on Photo-Electro-Chemical Catalytic Degradation of Reactive Brilliant Red X-3B
Authors: Li Ming Yu , Wang Kun Kun , Su You Wu , Song Lin , Cao Gang , Ren Gang
Published: February 2011

A new type of photo-electro-chemical catalytic reactor was designed. The cathode of the reactor was made of highly pure graphite and the anode was made of titanium dioxide. A saturated calomel electrode (SCE) was so used as the reference electrode that the electric potential of the cathode was determined. Under the condition of ultraviolet radiation and anodic bias-voltage, reactive brilliant red X-3B was degraded in the reactor synchronously by the process of photoelectrocatalysis with titanium dioxide anode and electrogenerated hydrogen peroxide through reducing dissolved oxygen with graphite cathode. With the cooperation of the cathode and the anode, impressive decolorizing efficiency of reactive red X-3B has been achieved. The results showed that, when the concentration of reactive brilliant red X-3B was 25mg••L-1 and the inert supporting electrolyte concentration was 0.005 mol•L-1 (1000mg•L-1) sodium sulfate, initial solution ph=4, and cathodic potential -Ec = 0.60 V, under UV radiation as well as constantly pumping air into the reactor, decolorizing efficiency of 79% has been achieved.
Study on Bonding Performance of Interlayer Materials between Old Cement Slab and Asphalt Overlay
Authors: Zhang Jian , Lu Wen Liang
Published: February 2011

Aiming at work condition between the layers for repaving bituminous surface on old cement concrete pavement, this paper put forward bond strength of the "black and white" depends on three factors which are asphalt membrane in asphalt concrete, bonding layer (bonding oil and interlayer), surface condition of cement slab; through methods of the indoor molding specimens and on-site coring and sampling, direct drawing contrast test was conducted for the three typical overlay bonding layer structure (setting fiberglass grid, setting APP felt, without interlayer), results showed that: bond strength sorting of the "black and white" interface based on surface condition of the old cement slab: rough surface> smooth surface>original surface; setting fiberglass grid decrease bond stability between layers, but the "notch groove ", to a certain extent, compensate for the decline in bond strength, while setting APP felt interlayer has great beneficial to bond performance of the "black and white" interface . Through the analysis of the mechanism of bond strength and drawing test, research results have very important value for guiding construction and design of asphalt overlay.
Research of Process Planning Based on Similarity Theory under Reconfigurable Manufacturing System
Authors: Song Shi Gang , Hu Xia Xia , Liu Jian
Published: February 2011

For dynamic process planning under reconfigurable manufacturing system (RMS), the method of process planning based on similarity theory was presented. Part feature description was built as well as case index structure. Procedure combination principia suited for reconfigurable machine tool (RMT) and sort rule based on relation among features were given. Similarity process information was created by comparability judgment of part feature multiple-tree, procedure was combined by the agglomerative hierarchical clustering method, and every working-step was sorted in procedure group. Moreover, the process planning system was developed with Visual C++ and verified through example test.
Demonstration of Modification from AlF3 Re-Deposition to Polymer Re-Deposition on Air Bearing Surface (ABS) Etched Sidewall of Fluorine-Based Plasma Etch on Al2O3-TiC Substrate
Authors: Pakpum Chupong , Siangchaew Krisda , Limsuwan Pichet
Published: February 2011

In this work, C-F polymer rich re-deposition are generated on the etched side wall of the patterned Air Bearing Surface (ABS). This C-F rich polymer is a by product from using a Surface Technology Systems Multiplex-Pro Air Bearing Etch (ABE) tool that utilizes fluorine base plasma. The morphology of the re-deposition and elemental composition are investigated via scanning electron microscope. The chemical bonding information is characterized via attenuated total reflected infrared spectroscopy. The purpose of this work is to demonstrate the modification of AlF3 re-deposition to polymer rich re-deposition allows complete re-deposition removal with isopropyl alcohol base solution. This offers advantage as the re-deposition removal is incorporated during the resist strip process offering superior cleanliness of slider head without additional process steps.
Tensile Tests of Glass Powder Reinforced Epoxy Composites: Pilot Study
Authors: Ku Harry , Wong Peter , Huang J. , Fung H. , Trada Mohan
Published: February 2011

Epoxy resin was filled with glass powder to optimize the strength and of the composite for structural applications by a research centre in the University of Southern Queensland (USQ). In order to reduce costs, the centre wishes to fill as much glass microspheres as possible subject to maintaining sufficient strength and fracture toughness of the composites in structural applications. This project varies the percentage by weight of the glass powder in the composites. After casting the composites to the moulds, they were cured at ambient conditions for 24 hours. They were then post-cured in a conventional oven and subjected to tensile tests. It was found that the best percentage of glass powder by weight that can be added to the epoxy resin to give an optimum yield and tensile strengths as well as Young modulus and cost was five percent. It was also found that the fractured surfaces examined under scanning electron microscope were correlated with the fracture toughness. The contribution of the study was that if tensile properties were the most important factors to be considered in the applications of the composites, glass powder is not a suitable filler. It is also hoped that the discussion and results in this work would not only contribute towards the development of glass powder reinforced epoxy composites with better material properties, but also useful for the investigations of tensile properties in other composites.
A Study of Art Creation for Picture Books Painted with Mixed Media
Authors: Lin Rui Lin
Published: February 2011

This study aimed to use mixed media as paint, through case study with interactive discussion teaching method between the teacher and the students, to plan for and design a storyboard as the script. Current papers used for painting and characteristics of mixed media paint were introduced to the students to help them choose papers and mixed media according to their own specialties, so that they could come up with a picture book with richer and more delicate content. Furthermore, documentary analysis was conducted with current documents related to picture book creation in order to provide students references for their creation. Finally, the students were guided to use computer graphing software to edit the scanned hand-drawings and perform typesetting. Eventually, the art creation of a picture book with both hand-drawing and computer graphing was completed.
Research on Modeling Method of Runway Frictional Coefficient Measuring Vehicle Based on Impedance Diagrams
Authors: Shi Xu Dong , Shi Shou Wen , Zhang Lu , Li Jian Li
Published: February 2011

Airport runway friction coefficient is an important parameter to evaluate the quality of runway which is usually measured by runway friction coefficient measuring vehicle. In order to reduce the airport runway friction coefficient measuring error which comes from runway vibration caused by road roughness and vehicle its own structural characteristics, an impedance diagram is used to model the suspending system and measuring system of the measuring vehicle. The power spectral density of pavement and inverse discrete Fourier transformation are introduced to model runway surface roughness as excitation input. The rationality of the stimulating established model is validated by comparing with an airport runway surface roughness measurement data. Runway friction coefficient measuring vehicle′s measuring error can be reduced and the measurement accuracy can be improved by using the impedance diagram modeling method.
Research of Aircraft Cable Fault Detecting Method Based on Hilbert Huang Transformation
Authors: Jing Tao , Zhang Lu , Shi Xu Dong , Wang Li Wen
Published: February 2011

Aircraft cable fault diagnosing is considered to be most important for engineering maintenance. Several methods for cables testing have been developed, such as TDR, FDR and TFDR. Time Domain Reflectometry (TDR) relays much on impedance changes on the fault position, which is hard to using in detecting high resistance defects, intermittent defects; Time Frequency Domain Reflectometry (TFDR) method is used to locate intermittent faults, continuous faults and cross-connection faults aircraft wire, however, the algorithm of TFDR is complex. To the "Hard Fault"(short circuit and open circuit), the Hilbert-Huang Transform method is used in determining the optimal bandwidth of the incident reference signal and analyzing the phase and amplitude difference of superimposed signal which from the incident signal and the reflected signal on defects. To the "Fray Fault", Time and Frequency Domain Reflectometry method can be used with the signal processing method with Hilbert-Huang Transform. The experimental results indicate that this method effectively detect all types of aircraft cable fault, particularly for short lengths of cable.
Effect of Nanosized Al2O3 as Additive on the Sintering Characteristics and Vickers Hardness of Al2O3/Si3N4 Compound Ceramics
Authors: Wang Hui Fang , Hao Shi Ming , Bi Yu Bao , Yu Ren Hong
Published: February 2011

In order to enhance the density and decrease the sintering temperature，Al2O3/Si3N4 compound ceramics were sintered by pressureless using β- Si3N4 as raw materials and Al2O3 as sintering additives. The effects of Al2O3 as additive on the Vickers hardness and the sintering characteristic of Al2O3/Si3N4 compound ceramics were studied. The results shows that adding 9-15% nano- Al2O3 can get Al2O3/Si3N4 compound ceramics only in 1650°C by pressureless sintering because of nano- Al2O3’sintered. As a consequence, the relative density increases from 89% with micro alumina to above 97% with nano- Al2O3, the Vickers hardness increases from 1043.5MPa to 1356.0 MPa.
Mode III Stress Intensity Factors of Surface Crack in Round Bars
Authors: Ismail Al Emran , Ariffin Ahmad Kamal , Abdullah Shahrum , Ghazali Mariyam Jameelah , Daud Ruslizam
Published: February 2011

This study presents a numerical investigation on the stress intensity factors (SIF), K of surface cracks in round bars that were obtained under pure torsion loadings or mode III. ANSYS finite element analysis (FEA) was used to determine the SIFs along the crack front of surface cracks embedded in the solid circular bars. 20-node isoparametric singular elements were used around the crack tip by shifting the mid-side node ¼-position close to a crack tip. Different crack aspect ratio, a/b were used ranging between 0.0 to 1.2 and relative crack depth, a/D were ranged between 0.1 to 0.6. Mode I SIF, KI obtained under bending moment was used to validate the proposed model and it was assumed this proposed model validated for analyzing mode III problems. It was found that, the mode II SIF, FII and mode III SIF, FIII were dependent on the crack geometries and the sites of crack growth were also dependent on a/b and a/D.
Radiation Shielding Lead-Free Glass Based on Barium-Bearing Glass Using Thailand Quartz Sands
Authors: Won-In Krit , Sirikulrat Narin , Dararutana Pisutti
Published: February 2011

Lead glass that shows a high refractive index is the best known and most popular for radiation shielding glass. Due to the toxic of lead compounds on the human organisms as well as the environmental issues, lead free glass was fabricated by using some heavy elements such as barium and bismuth to replace lead. In this study, colorless lead free glass samples were prepared from 40 wt% local quartz sand and various concentration of BaCO3 (20-40 wt%) as the main compositions in order to study radiation shielding property. The glass mixtures were melted conventionally using electric furnace at the maximum temperature of 1250°C with 4 hr dwelling time. The gamma attenuation characteristics were studied for the photon energy of 662 keV from Cs-137. Density and refractive index were also determined. It was found that a variation of prepared glass samples can be produced both in terms of clarity and radiation shielding properties. The attenuation coefficients were linearly increased as the increase of BaCO3 content. The density and refractive index were also increased. The linear and mass attenuation coefficients of the glass sample containing 40 wt% BaCO3 were 0.234 cm-1 and 0.0726 cm2g-1. In conclusion, a low density glass samples will give rise less attenuation than a high density ones. It can be concluded that the lead-free high refractive index glass that is one of the environmental materials can be used as the gamma radiation shielding glass.
Numerical Study on Laser Cladding Process of Magnesium Alloys
Authors: Chang Qing Ming , Chen Chang Jun , Chen Xia , Bao Si Qian
Published: February 2011

In this paper, a three-dimensional simulation model for laser-cladding processes of magnesium alloys is proposed. The applied loading is a moving heat source that depends on process parameters such as power density, laser beam diameter and scanning speed. The effects of process parameters on the melt pool are quantitatively discussed by numerical analysis. In these parameters, Marangoni force is the most important in affecting the molten metal flow and the contour of the melt pool. Both the length and depth of the melt pool vary sharply with temperature dependence of surface tension when the absolute value of this temperature dependence is at lower value.
Dislocation Distribution Model of Mode I Dynamic Crack
Authors: Wang Yun Tao , Lü Nian Chun
Published: February 2011

Dislocation distribution functions of mode I dynamic crack subjected to two loads were studied by the methods of the theory of complex variable functions. By this way, the problems researched can be translated into Riemann-Hilbert problems and Keldysh-Sedov mixed boundary value problems. Analytical solutions of stresses, displacements and dynamic stress intensity factors were obtained by the measures of self-similar functions and corresponding differential and integral operation. The analytical solutions attained relate to the crack propagation velocity and time, but the solutions have nothing to the other parameters. In terms of the relationship between dislocation distribution functions and displacements, analytical solutions of dislocation distribution functions were gained, and variation rules of dislocation distribution functions were depicted.
Digital Printing Performance of Cashmere Fabric under Acid or Alkaline Conditions
Authors: Yan Yi Nong , Zhang Xiang Ru , Li Dan , Xu Jian Jian
Published: February 2011

Pretreatment solution which was obtained by many experiments who had a good printing effect was used to do the digital printing experiment on the cashmere fabric. Printing performance of the cashmere fabric in different pH value was compared to improve the printing quality of the cashmere fabric. Digital printing experiments in the alkaline environment were carried out for the first time and the best pH value was found out which could ensure dye uptake, color fastness, anti-seepage property and minimal damage to cashmere fabric. The paper provided basic reference to the actual production.
The Control Policy for Environmental Abnormal Variation in the Lower Yellow River
Authors: Yan Jun , Zhang Ju , Yang Xian Bo , Zhang Yu Hua
Published: February 2011

Analyzed the variation reasons and its influence factors of the Lower Yellow River (LYR), the characteristics of typical water environment abnormal variation caused by human activities and the natural influence factors are put forward. The concept of environmental abnormal variation has been proposed in analyzing the processes of environmental change, and the types of water environment abnormal variation have been defined according to the characteristics of different reaches and human activities. Further more, the reparation methods for the environment abnormal variation in the Lower Yellow River are stated.