bluuebunny/crossref_metadata_2025 huggingface dataset:
Conceptual Design of Wireless Anti-Theft Alarm System Based on Antenna Array and Wave Transmission Model
Authors: Dang Shu Ping , Zhang Min , Ridge Joseph , Bristow Jordan , Gholamzadeh Amin
Published: January 2015

With the development of our society, electronic devices, such as laptops, tablets and mobile phones become increasingly widespread. An accompanying problem of this is the increase of theft aimed at these devices. Even though the proper administration and policy plays an important role to mitigate this crime, they still occur ubiquitously. Therefore, for the sake of eliminating this crime, not only the aspects of administration, policy and legislation should be enhanced, but also the corresponding techniques need to be reinforced. In fact, technology plays a dominant role in preventing crimes. In this paper, a conceptual design of an anti-theft alarm system based on antenna array and wave transmission models will be introduced piece by piece. By implementing a series of electronic components embedded into a protecting wireless network, the location of the protected object can be detected in real time. Once a theft occurs, the computation center will instantaneously obtain the data related to this behavior and assess its authorization and then determine to report or ignore it. This alarm system is specifically suitable for use in public places, for example, libraries, cafes, and holiday villages.
Comparison of Glass Transition Temperature Values of Composite Polymer Obtained by TMA and DSC
Authors: Bandeira Cirlene Fourquet , Montoro Sérgio Roberto , Espindola Elton Luiz , Botelho Edson Cocchieri , Costa Michelle Leali , Cioffi Maria Odila Hilário
Published: January 2015

In recent years a number of studies were conducted in order to obtain polymer composites with superior performance when compared to the metallic alloys. However, these new materials must meet a series of rigid project requirements. One way to evaluate the polymer composites is through their transition temperatures, especially the glass transition temperature (Tg). It is possible to evaluate the Tg of a polymeric material through the study of changes in dimensions of a sample as a function of temperature. These measurements can be made on an equipment of thermomechanical analysis (TMA), however, despite great sensitivity, this technique is basically unknown by most users when compared to others such as DSC or DMA. Even with different technical principles of operation, the results show similarity. Thus, this study aims to compare the results of Tg polymer composites obtained via TMA with those obtained from DSC curves in epoxy resin/carbon fiber laminates.
Formal Specification of RTL-Level Digital System Using Projection Temporal Logic
Authors: Zhang Peng Fei
Published: January 2015

An approach to specify a RTL-level system using Projection Temporal Logic (PTL) is proposed in this paper. With this approach, a digital system described with Register Transfer Language can be translated into PTL formulae, and properties of the system can be specified by PTL either. Then MSVL(Modeling, Simulation and Verification Language) can be used for detecting the error of the design formally.
The Image Processing Algorithm of Surface Topography Based on Laser Interference Measurement
Authors: Yang Lian Gen , He Lang , Wang Xuan Ze
Published: January 2015

In the measurement methods of microcosmic surface topography, laser interference microscopy with high precision and non-contact advantages, has been widely used. Based on the current processing algorithms of interference image, this paper studies principally the processing algorithms of single-wavelength laser interferometry and analyses the image processing algorithm of two-wavelength laser interferometry. On the basis of the original measurement precision, the two-wavelength measurement method can extend the depth measurement range and restore effectively the tested surface topography.
Numerical Simulations and Experiments on Changes in Erythrocyte Morphology under Continue Flow Ventricular Assisted Devices
Authors: Gu Kai Yun , Zhang Ya , Gao Bin , Zhuo Zheng , Chang Yu
Published: January 2015

Ventricular assist devices (VADs) implanted in human body produce different levels of shear stress due to mechanical structure, causing damage for erythrocytes. The study is focusing on the morphology changes of erythrocytes causing by continue flow VADs. This study used a Hemodynamic Shearing Device (Thermo Electron Corporation) to expose erythrocytes to shear stress produced by VADs. Then free hemoglobin of plasma is measured and blood smears are respectively made to count the number of abnormal erythrocytes. The results show that the correlation coefficient of the percent of abnormal erythrocytes (PAE) and shear stress is 0.725 (p=0.027, <0.05). After blood shearing experiments the number of abnormal erythrocytes has increased with shear stress under constant exposure time, and both shear stress and exposure time contribute to morphology changes in erythrocytes. The conclusion indicates that low shear stress (lower than 450 Dynes/cm2) damage of erythrocyte is an important factor in the application of VADs.
Dynamics Simulation of Particles of a Smoke Generator Based on SPH Method
Authors: Xu Xing Chun , Gao Xin Bao , Zhao Bo Bo
Published: January 2015

With the increasingly wider use of smoke in informationized warfare, the evaluation of combat effectiveness has become a new research focus in the realm. Hence, there is a need to investigate the dynamics regulation of smoke particles. In this paper, the authors construct a simulation model by analyzing the expanding process of initial smoke cloud. Further, the SPH method was employed in the dynamics simulation. The curves of velocity, displacement and pressure with time were presented after calculation in AUTODYN. The curves from the dynamics simulation show a good consistent when compared to the theoretical model. It proves that the dynamics simulation of smoke particles based on SPH method is feasible.
Smooth Blasting Construction Technology of Urban Shallow Subway Tunnel
Authors: Zhou Qing Fu , Wang Lu Jie , Wang Wan Ren , Wang Hai Liang
Published: January 2015

The article combined the existing theory of smooth blasting and the in situ construction experience. From the viewpoint of smooth blasting in the practical engineering application, a research was initiated on how to put smooth blasting construction technology of urban shallow subway tunnel into use, based on the example of the construction of the small mileage segment of the left tunnel line of 2# shaft of Hai-pi tunnel interval of Qingdao Metro Line 2, which provides the reference for other section construction of Qingdao subway.
Simulation and Analysis of the Failure for the Water Stop Curtain of Building Pit in Round Gravel Level
Authors: Wang Dong , Feng Chun Lei , Mao Zi Chun
Published: January 2015

The failure of the water stop curtain is a hot engineering problem which is usually seen in deep building pit constriction. In this paper, the SEEP/W module in Geo-Studio is adopted to simulate and analyze the failure of the water stop curtain and the geological condition in a certain project. The curtain defect existed in the round gravel level and its effect on the filtration is also studied. Finally, the strategies for controlling the quality of the water stop curtain are summarized.
The Effect of the Pile’s Diameter on the Bearing Capacity of Different Pile-Anchor Support Structures
Authors: Chen Kang Long , Huang Hua , Zeng Zhi Cheng , Liu Bo Quan
Published: January 2015

The bearing capacity of both separated and integrated pile-anchor support structures with different pile diameters was studied through the ABAQUS software. The results show that the integrated pile-anchor structure can improve the synergy and integrality of anchor bolts and anti-slide piles, the structure’s force and deformation are significantly smaller than that of separated structure. Besides, the maximum differences in both displacement and bending moment of the pile are 21.36% and 16.05% respectively. The deformation and internal force of the support structures can be reduced by increasing the diameter of the anti-slide piles, and the decreasing extent of the separated support structure is particularly noticeable. However, when the pile’s diameter is larger than a certain value, its effect on the mechanical behavior of the two support structures is no longer significant.
Analysis on Thermal Stresses Adaptability to High Grade Asphalt Pavement Structure in Qinghai-Tibet Plateau
Authors: Li Ning , Zhou Xue Yan , Tian Yu Xiang , Liu Peng Wei
Published: January 2015

Permafrostregions have harsh climate conditions, continuous low temperature, abrupt cooling, large temperature difference, winds, etc. It has an extremely obvious influencetoasphalt pavement structures and materials. Take Lhasa-Gongga airport highway as an example to analyze the low temperature cracking problem of asphalt pavement caused by the climatic conditions. Using finite element method to contrast and analyze the thermal stresses variation of different asphalt layer, and recommend suitable asphalt pavement structure for Qinghai-Tibet plateau permafrost regions.The results indicate that the thermal stresses of asphalt layer gradually reduce along with the thickness direction of structure, moment of maximum and minimum value also been delayed and thermal stresses of base cause is fairly few. It can reduce thermal stresses of base cause and asphalt layer effectively while using the AC-25, and 4cmAC13 + 6cmAC20 + 8cmAC25 is recommended for Lhasa-Gonggaairport highway pavement structure type.
The Effect of Expanded Perlite on the Performance of the Lightweight Wall Materials
Authors: Ji Ru , He Yang , Zhang Zuo Tai , Liu Li Li , Wang Xi Dong
Published: January 2015

This paper studied the produce process of the lightweight wall material (LWW). The main components of LWW were expanded perlite (EP) and Portland cement (PC). An experimental investigation was carried out to study the effect of EP on the performance of LWW, such as the bulk density, the strength property and thermal conductivity. The experimental results indicated that the products can be divided into lightweight structural materials and lightweight thermal insulation materials.
Preparation of ZrO2-Silica Microspheres by Layer-by-Layer Self-Assemble Technique
Authors: Yue Chun Xiao , Ding Peng , Shi Li Yi
Published: January 2015

The uniform nanoparticle multilayers micrometer-sized silica particle have been fabricated by consecutively assembling of surfactant C12H25SO4Na (SDS) and nanoparticles onto Silica microspheres and subsequently removing the surfactant by calcinations. The samples were characterized by X-ray diffraction, FT-IR,TG and SEM. Presence of the FT-IR bands with frequencies ranging from 800 to 900 cm-1 can be assigned to Si–O vibration, and to Zr–O–Si stretching vibration. XRD analysis showed obviously the characteristic diffraction peaks of tetragonal (T-ZrO2) and nanoscale of ZrO2. The SEM image showed that the surface layers of silica microspheres were coated by nanoparticles.
Preparation and Properties for Solid Solution Ce0.8Pr0.2-xSmxO2-δ(x=0.02, 0.05, 0.1)
Authors: Zhu Li Li , Lin Xiao Min , Qi Li Jing
Published: January 2015

Ce0.8Pr0.2-xSmxO2-δ(x=0.02, 0.05, 0.1) solid solutions were synthesized by the sol-gel method. The XRD results show that all powders calcined at 800 °C are crystallized in a single cubic fluorite structure. The average grain sizes are between 19 nm and 28 nm. The Raman spectra analysis reveals that the solid solution Ce0.8Pr0.2-xSmxO2-δhas a cubic fluorite structure with oxygen vacancies. The oxygen vacancy concentration is increased by doping Sm in Ce0.8Pr0.2-xSmxO2-δ. Impedance spectra shows that the conductivity of rare earth co-doped ceria Ce0.8Pr0.15Sm0.05O2-δis higher than that of single rare earth doped ceria Ce0.83Sm0.17O2-y. The results also show that Ce0.8Pr0.15Sm0.05O2-δpossess maximum conductivity. At 600 °C, the conductivity is 1.20×10-2S/cm, which is assigned to the higher oxygen vacancy concentration and the hopping electron transition of small polarons in the sample Ce0.8Pr0.15Sm0.05O2-δ.
Coil Failure Mode Analysis for Fiber Carbon Composite Core Rod Used in Overhead Stranded Wires
Authors: Li Rui , Yu Hong Yun , Qian Miao , Yu Min Bo , Li Guo Yong , Li Zhou Xuan
Published: January 2015

This paper studies the mechanical performance of fiber carbon composite core rod under coiled condition by finite element simulation and analyzes the failure modes by coiling test, providing technical support and theoretical basis for the manufacture technique, test method, and application of fiber carbon composite core rod.
Molecular Dynamics Numerical Simulation on Heat Capacity of Bi-2223
Authors: Bi Ke , Wu Gang , Ma Ji , Zhang Qing Zhi
Published: January 2015

The heat capacity for anisotropy of high temperature superconducting material is hard to calculate. This paper analyze the structure characteristics of Bi superconducting material , build polymolecular Bi-2223 system, simulate the specific heat of the Bi system high temperature superconducting material based on the molecular dynamics method. And then obtain the material parameters of the specific heat of the Bi - 2223 range of 20~40K.
A Trimming Algorithm of Refined Meshes in Sheet Metal Forming
Authors: Zhang Qiu Chong , Zhang Zhi Bing , Liu Yu Qi
Published: January 2015

A trimming algorithm is presented for trimming process of refined meshes in sheet metal forming simulation. Firstly, trimming line is pretreated to guarantee it smooth enough for trimming process. Secondly, the elements around the trimming line are found and refined to the highest adaptive level. Thirdly, the intersection points between trimming line segment and the element edge can be obtained using an Advancing Inciting and Adjustment method. Then new number is distributed to nodes of elements on one side of trimming line so that the meshes can be divided into several parts by the trimming line. Finally physical quantities of the remained elements are inherited from the original elements. At last the validity, practicability and speediness of the algorithm are verified with a numerical experiment. And the algorithm is integrated into a sheet metal forming simulation program, FASTAMP.
Using the Lattice Boltzmann Method to Simulate the Heat Conduction in a Thin Film Induced by Ultra-Fast Laser
Authors: Mao Yu Dong , Xu Ming Tian
Published: January 2015

Ultra-fast laser heating technology has been widely used in the micro-/nanodevices. The Lattice Boltzmann method (LBM) is employed to simulate the heat conductions of laser heating appeared in a thin film. The results obtained by the LBM show that a wavelike behavior is appeared, but it can not be found in Fourier prediction. Comparing the results obtained by the Fourier law and LBM, we find that the LBM solution shows higher temperature than the Fourier prediction. Moreover, simultaneously heating both surfaces of a thin silicon film by ultra-fast lasers can induce two thermal waves traveling in the opposite directions, and when they meet together, the energy will enhance significantly.
Research on Camber Correction Method of Heavy Plate
Authors: He Chun Yu , Jiao Zhi Jie , Wang Jun , Meng Jing Zhu
Published: January 2015

In the rolling process of heavy plate mill, the longitudinal extension will result in differences at different positions in the lateral direction of rolling pieces. This difference is affected due to some asymmetric rolling conditions, which lead to the camber. Lateral direction of the plate which is based on image processing algorithm is measured by using plate images acquired during rolling process with the help of linear array camera. In combination to camber correction model deducted and camber feedback control system is developed to realize the automatic correction control for camber of plate during production in this paper. Field applications show that this control method is able to reduce human interference and camber curve rate, which is significant in improving the yield of product.
Complex Wettability and Self-Cleaning Performance of Butterfly Wing Surface
Authors: Fang Yan , Sun Gang
Published: January 2015

The microstructure, hydrophobicity and chemical composition of butterfly wing surfaces were investigated by a scanning electron microscope (SEM), a video-based contact angle meter, and a Fourier transform infrared spectrometer (FT-IR). Using CaCO3 particle as simulated pollutant, the self-cleaning performance of the wing surface was measured. The wing surfaces possess complicated micro/nanostructures. According to the large contact angles (140.2~156.9°) and small sliding angles (1~3°) of water droplet, the butterfly wing surface is of high hydrophobicity and low adhesion. The average rate of CaCO3 pollution removal from the wing surface is as high as 86.2%. There is a good positive correlation (r=0.89) between pollution removal rate and roughness index of the wing surface. The coupling effects of hydrophobic material and rough microstructure contribute to the special complex wettability and remarkable self-cleaning property of the wing surface. Butterfly wing can be used as a template for design of superhydrophobic surface and self-cleaning material. This work may offer inspirations for biomimetic fabrication of novel interfacial material with multi-functions.
Fatigue Strength Study on Radial Bogie Vice Frame Based on Finite Element Analysis
Authors: Wang Xiao Wei , Lang Mao Xiang
Published: January 2015

The vice frame bears and transfers the forces and loads between the bogie and the vehicle body.The strength of the vice frame relates directly to the stability and smoothness of the vehicle. In this study, finite element analysis is utilized first to analyse the structural strength and fatigue life of the vice frame, and the recognize the weak parts of its structure in order to enhance its structural strength in the following design work.The finite element analysis is performed on a simulation software Ansys. Then an experiment is designed to test the fatigue strength of the vice frame. The experimental result indicates that the fatigue strength of the object corresponds to the standards and the finite element analysis has high feasibility in solving this kind of problem.
Numerical Calculation for Temperature Field in Two Exits Tundish
Authors: Ma Tian Fei , Li Hong Xia , Wang Xin Fu , Liu Guo Qi
Published: January 2015

According to the operating parameters of a tundish for continuous casting in a steel mill, the temperature distribution of molten steel in tundish was studied by the method of numerical calculation. Change the flow orifice area of slag wall, simulation calculation for the effect of various slag walls on the temperature distribution of molten steel in tundish was done. Through the calculation and analysis of tundish longitudinal section and the surface temperature distribution, temperature uniformity of molten steel in tundish was determined. The calculation results show that: the slag wall can obviously deduce temperature difference between the top and the bottom of molten steel in tundish; small flow orifice area of slag wall can promote the temperature uniformity of molten steel after slag wall.
Theoretical and Experimental Model for the Analysis of a Cardan Cross
Authors: Avrigean Eugen , Stetiu Mircea
Published: January 2015

The work presents the aproach of initial moddeling and calculus in order to prepare an finite element investigation of the cardan transmission joint. For this, it is necessary to develop a flexible informational system that would connect the constructive design of cardan transmissions to the technological design within a unitary structure. Due to the typodimensional diversity of cardan transmissions, the design and manufacturing of the various components for a certain application domain (medical aparature, dental and agricultural machines, lifting and transportation machines etc.) has been typified. In order to study the problems that occur in the practice of using cardan transmissions, there has been realised a questionnaire-based descriptive research. We insisted on calculation of the cardan transmission for Dacia 1304/1307.
The Research of the Large Reservoirs Combined Forecasting and Scheduling System of Liaoning Province
Authors: Liu Heng , He Jun Shi
Published: January 2015

The existing problems of large reservoir forecasting model In Liaoning Province are cumbersome and time-consuming, false report and not standard. This paper in view of the weak links, established a set of large reservoir flood forecasting and scheduling system of province administrated. Determining the research target, the function structure and business flow of the system were summarized. The key technology research was focused on the system platform construction, GIS, station control, model management, daily forecast, flood forecast and flood control etc. Research shows that: The system can provide fast, accurate forecasting and dispatching reference for 9 large reservoirs and realize the change from "distributed" forecast model to the "distributed and lumped coexist" forecast model.
Fuzzy Comprehensive Evaluation of Safety Culture in Coal Mining Enterprises
Authors: Liu Can , Liu Jie , Wang Jing Xian
Published: January 2015

Evaluating safety culture of coal mining enterprises can promote effectively their safety management. This paper introduces an improved fuzzy comprehensive evaluation model specially designed for the safety culture evaluation of coal mining enterprises. Evaluation index system which is comprised of 4 first-layer indexes and 15 second-layer indexes is established based on ANP, and then the weights of indexes are calculated by Super Decisions software. The FCE model for safety culture of coal mining enterprises is built to assess accurately the safety culture of coal mining enterprise S based on the indexes system. The evaluation results indicate that the evaluative value of enterprises S is “71.979”, which stays in the “generally good” level. Thus, enterprises S should implement timely rectification measures to reach the “better” or “very good” level. The method of fuzzy comprehensive evaluation is a practical and efficient way to assess safety culture of coal mining enterprises.
Research on Lightweight Multi-Objective Optimization for Closed Body-in-White Structure
Authors: Wang Chuan Qing , Wang Deng Feng , Zhang Shuai
Published: January 2015

The 100% frontal crash and side impact performances of a passenger car are analyzed and compared with tests. The structural optimization of the Closed Body-in-White (BIW) is divided into two stages which are 100% frontal crash safe part optimization and side impact safe part optimization. Use the Optimal Latin hypercube (Opt LHD) design method to generate sample points. Take the Radial Basis Functions (RBF) neural network method to establish optimization approximation model. The non-dominated sorting genetic algorithm (NSGA-II) was used to conduct multi-objective collaborative optimization design. The results show that the total mass of the closed BIW is reduced 9.745kg; the light weight rate was 10.27%. The Crashworthiness performance of the closed BIW does not change obviously.
Quantile Regression for Partially Linear Models with Missing Responses at Random
Authors: Zhao Pei Xin
Published: January 2015

In this paper, we propose a weighted quantile regression method for partially linear models with missing response at random. The proposed estimation method can give an efficient estimator for parametric components, and can attenuate the effect of missing responses. Some simulations are carried out to assess the performance of the proposed estimation method, and simulation results indicate that the proposed method is workable.
Microstructure Characterization and Mechanical Properties of a Zn and Rare Earth Modified Mg Alloy
Authors: Sheng Li Yuan , Yang Fang , Xi Ting Fei
Published: January 2015

In the present paper, the Mg-Zn-Y-Nd alloy is fabricated by as casting and hot extrusion. Microstructure and mechanical properties of the as-cast, heat treated and hot extruded alloys are investigated. The results exhibit that Mg24Y5 phase with eutectic structure forms in the as-cast alloy, which has an orientation relationship with matrix of . The precipitating phase separates the matrix semi-continuously. The heat treatment results in most precipitates solid soluted into matrix, but there are still some nanoscale particles and residual phase along grain boundary. The hot extrusion refines the microstructure and leads to the formation of stacking faults in the matrix. Compared with the as-cast and heat treated alloy, the hot extruded alloy obtain great improvement in mechanical properties, which should be attributed to the grain refinement, solid solution and fomation of crystal defects
Effects of the Repetition Number on Static and Dynamic Magnetic Properties of Metal/Native Oxide Multilayer Films
Authors: Zuo Hua Ping , Ge Shi Hui , Xu Min , Wu Chun Hua
Published: January 2015

The [Fe-Co-Si (2 nm)/native oxide]N multilayer films weredeposited on glass substrate by DC magnetron sputtering. The effect of repetitionnumber N on static and dynamicmagnetic properties of the multilayer films was investigated. Good soft magnetic properties have been obtained inthe multilayer films with repetition number more than 30. Relatively highvalues of the complex permeability and ferromagnetic resonance frequency wereobtained and they can be adjusted by changing the repetition number of themultilayer films.
Effects of K Factor on the Length of Aircraft Sheetmetal Material Preparation under Unfolding State
Authors: Zong Kai , Zhang Shuang Shuang , Zhang Lu
Published: January 2015

To prepare materials for sheetmetal unfolded based on CATIA software became an important link in processing and forming of sheetmetal parts. In this paper through the research of practical problem encountered in the process of sheetmetal unfolding preparation in aircraft manufacturing enterprises, introduce and prove the influence of sheetmetal unfolding coefficient on the preparation of raw materials; through analysis of external factors like the characteristics of materials and ductility of sheetmetal, developed a suitable method to calculating the length of sheet metal stocks. It greatly enhanced the level of sheetmetal manufacturing in aircraft manufacturing enterprises, meet the requirements needed on sheetmetal processing, and bring about the technology expand from theory to practice.
Evaluate Planar Feature with a Material Condition Using Convex Hull
Authors: Guo Chong Ying , Liu Jian Hua , Jiang Ke , Liu Hai Bo
Published: January 2015

In order to obtain an orientation error of planar feature accurate, a method to evaluate it using convex hull is proposed. Firstly, a convex hull is established based on a set of measured points on the planar datum feature by the coordinate measurement machine (CMM). Then, the datum simulator is determined by the vertices of the convex hull with taking maximum material requirements (MMC) into consideration. Afterwards, allowable variation range of the locating features is derived with relative to the datum simulator. Finally, orientation error is evaluated based on convex hull constructed by measuring points of the location feature.
Investigation of Micro Holes Fabricated by Femtosecond Laser on S136
Authors: Zhang Lei , Cao Xiao Wen , Huang Deng Peng , Ran Dong Wei , Tian Shuo , Sun Hui Chao
Published: January 2015

Femtosecond laser is now widely used in micro holes drilling because of its unique advantages, such as high efficiency, high precision and non-contact. Femtosecond laser is the best choice to fabricate micro holes. This paper makes a systematic study of the influence of laser power and number of pulses on diameter and depth of micro holes on S136 die steel through the focusing lens with focal length of 35 cm. A series of high-precision micro holes with different diameter and depth are fabricated. The relationship between the dimension of fabricated micro holes and the process parameters is determined.
Preparation and Properties of Edible Packaging Film Based on Potato Starch
Authors: Zhang Xin Lin , Luo Shi Yong , Zhang Wen Yu , Xu Wen Cai
Published: January 2015

Low price of potato starch as a wide range of sources of edible film substrate, glycerol as a plasticizer, pullulan as a film-forming agent, prepared by solution casting of potato starch-based edible environment-friendly packaging materials. Tests were run on potato starch-based edible films to determine mechanical properties, transparency and color evaluation. It was observed that the increase of the glycerol content in the films increased the macromolecular mobility, the potato starch films became less stiff and more flexible. Meanwhile the transparency and yellow index are both increased, obviously.
Study on Middle Annealing Process of HSn88-1 Alloy
Authors: Huang Guo Jie , Ma Ji Miao , Zhao Yang , Wang Dong Ya , Peng Li Jun
Published: January 2015

The tensile strength, elongation and microstructure of alloy are respectively tested and observed after annealing treatment. The results show that the working rate the larger, the initial recrystallization temperature the lesser. The proper middle annealing process of HSn88-1 alloy with 80% deformation is 460°C×5h.
Study on the Effects of Molar Ratio of MgO and MgCl2 on the Properties of Magnesium Cement Straw Board Based on Experiment
Authors: Wang Xian Li , Zhang Chun Yang
Published: January 2015

Magnesium cement-based straw board is made of chloride-oxy-magnesium concrete as gel phase, a new building material with straw as reinforcing phase. The effects of molar ratio of MgO and MgCl2on the static bending strength, softening coefficient and start time back to halogen moisture absorption of magnesium cement-based straw board are analyzed in detail. The result showed that,when n(MgO)/n(MgCl2)=7(molar ratio),the mechanical properties and water resistance are the best, hydration products at this time is dominated by 518 phase.
The Finite Element Analysis of Waste Fiber Recycled Concrete Column Compression Performance
Authors: Zhou Jing Hai , Lin Qing Zhe , Shu Yun Cong
Published: January 2015

Through the ABAQUS software to simulate the compression performance of waste fiber recycled concrete column of the different fiber length and amount of fiber volume under the monotonic load, the ultimate carrying capacity and load - concrete strain curve of waste fiber recycled concrete eccentric compression column are concluded, and compare them with experimental results. The results show that the finite element analysis results and experimental results are basically in agreement with, which proves the feasibility and correctness of the finite element analysis.
Effect of PP-g-MAH on Properties of ABS/PP Blends
Authors: Li Hai Ling , Zhang Lai Xiang , Ding Xiao Ling
Published: January 2015

Research of ABS and PP were mixed design, preparation and formulation of gold for the production process, performance test. Discussed in PP - g - MAH as computerize of cases, in the process of ABS blended with PP, ABS/PP blend formulas and the determination of process parameters is analyzed. Through performance test and analysis different composition ratio of computerize on the ABS/PP alloy performance impact. Finally concluded that, in the ABS/PP/PP blend - g - MAH, when PP-g-MAH is 4, 16 for PP, the impact of the blend with good performance, thermal deformation temperature is increased.
Mechanical and Electrical Properties of TiN with Stacking Fault: A DFT Study
Authors: Wu Guo Xun , Wang Zhen Qing , Li Chen Liang , Wang Chao Ying , Yang Yong , Wang Bao Lai
Published: January 2015

Using the density-functional theory, the mechanical and electrical properties of TiN crystal with stacking faults have been evaluated. The formation energy of stacking faults are calculated. It is found that the stacking faults can increase the strength of TiN crystal but attribute little effect for the electrical properties. The uniaxial tensile stress can lower the Fermi surface of the TiN crystal, and the metallic characteristic is weakened with the stress increasing.
Optimization of Cutting Parameters for Face Milling of Cast Iron by Reducing Specific Cutting Energy and Machined Surface Roughness
Authors: Schlüter Melissa , Hübner Henrique Butzlaff , de Souza André João
Published: January 2015

The search for continuous improvement of the processes and products offered to the market combined with continuous efforts to reduce energy consumption stimulates the development of techniques and tools geared towards their optimization. Thus, this manuscript describes the application of multivariate optimization in the process of face milling of DIN GGG 50 nodular cast iron by means of experimental design techniques, regression models, and Taguchi loss function. Three input parameters (axial “ap” and radial “ae” depth of cut, and feed-rate “f”) were used as controllable factors of the process and two output parameters (specific cuttingenergy “es” and roughnessaverage “Ra”) were considered as response variables. The output obtained as a result of optimization wases= 1.41 J/mm3andRa= 0.85 µm by applying the input parametersap= 2.34 mm,ae= 33.4 mm andf= 0.44 mm/rev.
Industrial Design Evaluation of Coal Mine Machinery Based on Fuzzy AHP
Authors: Liu Yu Rong , Hao Ming Rui
Published: January 2015

For many fuzzy factors in the industrialdesign of coal mine machinery and subjectivity in the process of evaluation,introduces the method of fuzzy AHP (Analytic Hierarchy Process) comprehensiveevaluation into the coal mine machinery. In thedecomposition of the evaluation index and its evaluation model of coal minemachinery industrial design. Through an example of an underground specialvehicle design scheme evaluation calculation, it verifies that this method isfeasible and effective.
Extreme Research on the Order Motion of the Hoisting Two-Stage Hydraulic Cylinder
Authors: Li Cheng Liang , Su Ming , Xie Zhi Ping
Published: January 2015

The motion order of thehoisting two-stage hydraulic cylinder will be affected by load. The paperresearches the script development of the AMESim based on python language, putsforward the numerical method of solving the maximum load of the hoistingtwo-stage hydraulic cylinder in the hydraulic system: set the preliminaryvalue, compare the simulation results whether the displacements of thetwo-stage hydraulic cylinder are equal, adopt "the dichotomy" theoryto iterate and in the end seek out the maximum load quickly. And paves a newvenue for predicting the maximum load two-stage hydraulic cylinder canwithstand in the hydraulic system design stage.
Characteristic Analysis in Combustion Process of Marine Dual Fuel Engine
Authors: Qu Ping , Yu Hong Liang , Zhang Feng Bo , Zhao Wen Juan , Li Feng , Wan Jia Lin
Published: January 2015

Currently, the research of marine dual fuel engine is rare, while the combustion process of marine dual fuel engine is no precise conclusion. This paper built a combustion model of dual fuel engine by AVL FIRE software, and compared experimental data to prove the accuracy of the model, analyzed the characteristics in combustion process of marine dual fuel engines, provided a theoretical basis for the further optimize and design of marine dual fuel engine.
Crash Simulation of New Car Rear Under-Run Protector
Authors: Li Zhang Hong , Qiao Wei Gao
Published: January 2015

According to a brand of heavy truck’s under protection device, using CATIA surface modeling functions , this article assessed the performance of the rear under-run protection device. Study the performance of the rear under-run protection device by doing width offset collision simulation. A new energy absorption type under-run protection device is designed which can improve the energy absorption property. By vehicle rear-end collision simulations the optimized feasibility of protective devices is verified.
Design on Book Sorting Device Based on the TRIZ Theory
Authors: Kang Ming Xia , Yuan Ming Hai , Yan Shu Yang , Liu Ya Zhou
Published: January 2015

Dueto the shortage of domestic and foreign books sorting machine, the innovativedesign for the book sorting device is carried out with a small volume, lowcost, high efficiency characteristics by using TRIZ theory. The sorting deviceconsists of lifting platform device and trolley rail unit, and it greatlyreduces the size and cost of production and sorts books into 22x9 categories, soit has larger applications prospect in college library. Research andapplication of TRIZ theory in mechanical product innovation design has a veryimportant theoretical and realistic significance.
Thick Nickel Coating on Surface of Quartz Optical Fiber by Electrochemical Deposition Method
Authors: Mei Xin Dong , Jiang Bo Quan
Published: January 2015

Electrochemical deppsition methods (electroless plating and electroplating) were used to deposit a thick nickel on surface of quartz optical fibers. A thin Ni--P film was firstly to be deposited on the fiber by electroless plating. Then a thick Ni coating with thickness of about 1.7 mm was deposited on the Ni-P film,as a substrate, by electroplating. The effects of the concentrations of NiSO4·6H2O, NaH2PO2·H2O , C3H6O2 , H3BO3 , pH value and temperature on the quality of Ni-P coatings were investigated and their optimal values were determined by orthogonal test method..The effects of concentrations of NiSO4·6H2O and C12H25―OSO3Na and current density on Ni deposition were studied and the optimum technical conditions were discussed. Under the optimal conditions, the thin Ni-P film possessed good smoothness and strong adhesive force and the Ni-coating had good quality with fine Ni crystals and uniform surface.
The Use of LOLP Operation Design Method in Optimize the Design of Independent Photovoltaic System Based on PVsyst
Authors: Zhao Chun Lei , Li Tian , Liang Yun , Zhang Xu
Published: January 2015

In recent years, energy and environment problems are becoming more andmore serious, become people present and solve the energy crisis in the futurean important way of effective development and utilization of solar energy.Independent photovoltaic system is an important form of effective utilizationof solar energy. On the independent photovoltaic system research andoptimization design is of great significance for the effective use of solarenergy in the future. This paper takes Jilin Province Household independentphotovoltaic power generation system as an example, by using the design methodof the traditional formula and LOLP arithmetic design method are the design ofthe system, the simulation results of PVsyst analysis and comparison of thedata, obtained by LOLP arithmetic design in photovoltaic panels, power andstorage battery capacity is more reasonable, can to meet the needs of users ofthe premise, reduces the investment cost, improving the utilization rate of theequipment.
The Multiobjective Design Optimization of pMUT Hydrophone
Authors: Chang Shun Hsyung , Wang Fu Tai , Wu Jiing Kae , Shevtsov Sergey N. , Zhilyaev Igor V. , Shevtsova Maria S.
Published: January 2015

The paper presents some results of multi-objective optimization for the multilayered membrane-type piezoceramic MEMS based transducers with perforated active PZT and intermediate diaphragms, covered by the protective plates, and a vacuum chamber. An influence of the protective plate elastic and viscous properties, the dimensions and the relative areas of the perforated holes on the sensitivity’s frequency response of the hydrophone was studied for the broadening and equalizes the operating frequency band. We optimize the key design’s parameters using the Pareto approach with the finite element (FE) model of coupled piezoelectric-acoustic problem for the hydrophone.
Inadhesion Property of Aluminum Surfaces with Bionic Morphology
Authors: Li Jing , Li Qiang , Du Feng , Zhang Wei , Shang Chun Min
Published: January 2015

The bionic inadhesion structures have been built on aluminum alloy substrates by the method of pressing based on the bionic reducing adhesion theory. The factors influenced inadhesion property were studied. The microscale morphologies of bionic surface were observed on the stereomicroscope. The adhesion property between aluminum bionic surface and viscous medium were evaluated by measuring adhesive force by the test system of adhesive force.
Study on Switch Mode of Bus Coupler Protection in 330kV Substation of Zambia
Authors: Xiong Zai Bao , Lu Wei , Long Xiao Hui , Chen Xiao
Published: January 2015

In order to switch line protection to bus coupler protection when bus coupler circuit breaker is in place of by pass state for line bay efficially and reliable, according to experience of Chinese substation building. this paper presents 3 switch modes. At last, reference with the habits of Zambia , this paper presentsone better mode for Zambia substation through comparing the effectiveness and reliability of the 3 switchmodes.
Based on Rub a Drum of Four Axis Programming and Virtual Machining Optimization Research
Authors: Ye Xuan Lin
Published: January 2015

Analysis of the features of Mastercam, Solidworks and Vericut software and their respective advantages, Proposed by Solidworks, MastercamX and VERICUT three software are combined as the optimization platform to build the NC machining program integrated modeling, assembly, processing, simulation and Optimization in one. Author take rub a drum processing for an example, in the Solidworks modeling, assembly, in the Mastercam X programming and generate the NC program, through VERICUT for the simulation and optimization of NC program, Examples show the rationality of optimization, avoiding the collision, the production and processing of the interference, the over cut phenomenon, Three software effectively combined, play a very high efficiency, improve the using efficiency of NC machine tool, has the certain reference significance to the actual production.
Simulated Study for OOK Modulation in the Mud Pulse Telemetry
Authors: Xu Bo Qin , Zhang Zhu Jun , Hu Jun Wei
Published: January 2015

Mud pulse telemetry (MPT) transmits data from borehole to surface during the drilling process. Pressure wave is generated in the drilling channel and is used as carrier of the downhole data. Through numerical simulation, this paper analyzes the bit error rate (BER) of mud pulse telemetry under different signal to noise ratio (SNR) based on on-off keying (OOK) modulation scheme. By observing the effect of waveform error on BER, the allowed variation ranges in signal amplitude and period are obtained.
A Blind Detection Method of Video Steganography Based on Feature Fusion
Authors: Wang Wan Qing , Zhang Deng Yin , Shi Guang Shuai
Published: January 2015

Due to lack of generalanalysis method in video digital steganalysis research area, a blind detection method which is based onfeature fusion aimed at the video steganography is proposed in this paper.Compared with special steganalysis method, the method has better detection rate,lower false alarm rate, and more extensive applicability.
Research of Fault Diagnosis Method Based on Improved Extreme Learning Machine
Authors: Na Wen Bo , Jiang Qing Feng , Su Zhi Wei
Published: January 2015

In order to improve the accuracy of diagnosis pumping, and accelerate the speed of diagnosis, a fault diagnosis model based on improved extreme learning machine (RWELM) was proposed. Firstly, it extracted the energy characteristic eigenvector of dynamometer cards of an oilfield in northern Shanxi by using wavelet packet decomposition method. Then through simulation of fault diagnosis, and compare with the extreme learning machine (ELM), RBF neural networks and support vector machine (SVM). The experimental results show that the accuracy and the speed of fault diagnosis based on the RWELM are better than the ELM, RBF neural network and SVM.
The Research of Algorithm to Obtain High Precision of Angle Sensor
Authors: He Gang , Gao Guo Wei , Hao Rong
Published: January 2015

This paper introduces how to use the testing circuit board of measuring accuracy ofthe sensor, testing circuit board is made by the SCA100T - D01 biaxialanglesensor, ATmega8 MCU, ADS8344AD converter, MAX232 and other related components.Through the three axis turntable to rotate a precise angle, which makes thesensor in the testing circuit board has the output value, the output value indata processing, to find out the best coefficient, so as to achieve therequirements of high precision.
An Elasto-Plastic Constitutive Model for Unidirectional Fiber Reinforced Metal Matrix Composites
Authors: Yang Lei , Huang Wen
Published: January 2015

A statistical constitutivemodel, which takes account the effect of strain rate, was presented to describethe stress-strain relationship of unidirectional fiber reinforced metal matrixcomposites (UFRMMC). To verify its reliability, tensile tests on a unidirectionalSiC/Al composite wire, were carried out at different strain rates, and thestress-strain curves were obtained. The testing results show that both thestrength and ductility of the composite wire all increase with increasingstrain rate. Simulated stress-strain curves, derived from the constitutivemodel, fit the tested results well, which indicates that the model is valid andreliable.
Mainly Talks about the Electronic Communication System Key Technology Analysis
Authors: Zhao Wei , Li Fang Yun
Published: January 2015

electronic communicationtechnology today belong to a sophisticatedand highly applied technology, thekey technology development level and theprogress of a country's level ofelectronic communication technology.Electronic communication industry is a partof information industryindispensable, progress and the development ofelectronic communication technology to directly drive the advanced productiveforces and the strength of science and technology. The field and scope ofelectronic communication technology widely, especially prominent in two aspectsof mobile phone and satellite communications, this article will also throughthese two aspects to analyze the key technology of electronic communicationsystem problem.
The Design of Communication Interface for Profibus-DP Slave Based on SPC3
Authors: Miao Guang Xiang
Published: January 2015

A Profibus-DP transform interface was designed. TakingAT89S52 and SPC3 as core, hardware of interface, software flow and GSD file were designed. The interface implemented access of Profibus-DP for traditional instrument and field equipment which weren’t provided with Profibus communication ability. Test results show that the interface can run data communication with main station at high speed, with high reliability and versatility.
Android-Based Smart Access Control System for Open Laboratory
Authors: Liu Kan , Ai Zhao
Published: January 2015

In order to protectproperty of laboratory, restricted access to laboratory, this paper focuses onthe development of smart access control system for open laboratory by using theAndroid system and embedded technology. This system uses three key parameters ofthe Android phone's Wi-Fi signal strength, GPS positioning information andidentification number to achieve access control certification, personnelorientation and personnel information collection. Then the laboratory personneldata would be updated and storage in database in real-time via PC LabVIEWapplication. The access control system is stable and have well real-time. Thissystem will be able to meet the university laboratory management requirementsand greatly improving the management level of the laboratory.