bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Membrane Bending Stiffness on the Deformation of Erythrocytes
Authors: Jiao Gu Yue , Zhang Ruo Jing
Published: June 2013

The erythrocytes play an important role in delivering oxygen and carbon dioxide in the human body. They are generally believed to be highly deformable and are able to squeeze through small capillaries. The elastic rigidity of the cell is associated to the change in free energy caused by both the stretch and the bending of the erythrocyte membrane. If the curvature of a shell is changed by deformation, the bending stiffness must be considered. However, researchers usually focus on the stretch of the cell membrane while analyzing the experimental data. In this article, mechanical models were proposed to study the erythrocytes deformation during optical tweezers stretching and micropipette aspiration. The effect of membrane bending stiffness on the cells deformability was concluded using finite element modeling and simulation.
Electro-Deposition Methods Influence to Ferrosilicon Organization
Authors: Liang Jing Long , Li Hui , Li Yun Gang
Published: June 2013

Combining ferrosilicon alloy with electro-deposition method, the main phase in the deposit layer is Fe3Si, and the substrate texture is mainly distributed in γ orientation line, {111}<110> and {111}<110> is the key component. The sample is mainly the cubic texture of {100}<001> and {111}<112> in γ orientation line, with a small amount of Goss texture. {111} texture share in the sample decreases.
Supercritical Carbon Dioxide Extraction of the Fatty Acids from Pacific white Shrimp Waste (Litopenaeus vannamei)
Authors: Yang Xia , Zu Tie Hong , Zheng Qian Wei , Zhang Zhi Sheng
Published: June 2013

The content of total lipids in Pacific white shrimp head was higher than those find in other shrimps. A process to extract lipids from Pacific white shrimp waste (head) was developed. Supercritical fluid extraction was used and the effects of temperature, pressure, CO2 flow rate and extraction time on extraction yield and composition of the fatty acids were investigated. The extraction yield had little dependence on pressure, temperature and CO2 flow rate. However, the pressure and temperature conditions affected the composition of the fatty acids. Addition of entrainer can increase the extraction yield significantly (P<0.01), the maximum of the extraction yield was 80.9% with 8% ethanol at 30 Mpa, 45°C and 1 L/min.
Screening of Biosurfactant-Producing Bacteria
Authors: Wu Jing Chun , Yang Liu , Zhao Yang , Zhang Xiao Long
Published: June 2013

Firstly, two biosurfactant-producing bacteria named 1# and 2# was selected from 7 strains. Secondly, their growth and metabolism laws that the quantity of metabolic products would reach the highest and the value of surface tension would bottom out in the stationary phase of growth was found in the culture flask. Thirdly, the optimal condition for fermenting was chose by the orthogonal test which was used to study the effect of constituent of fermentation medium, culturing temperature and rotation speed of shaking table on the capability of metabolizing biosurfactants. Finally, compared the interfacial tension of strain 1# with that of strain 2# at the optimum conditions, strains 1# was chose for industrial fermentation.
Time Change Rule and Source Identification of Nitrogen and Phosphorus Pollution on Huihe River in Suzhou City
Authors: Fu Jin Mu , Gong Wei , Chen Xiao Yin , Fang Gang
Published: June 2013

For understanding the temporal variation of nitrogen and phosphorus concentrations in Huihe River, Suzhou, the observed data (including NH4+-N、 TN、TP, the temple and quantity of the water) from 2007 to 2010 were analyzed by statistical analysis including correlation, cluster and factor analysis. The results imply that the variations of concentrations of NH4+-N, TN and TP in Huihe River were significant, their concentrations are 0.05-4.22mg/L, 0.11-15.14mg/L and 0.01-1.41mg/L, respectively. Correlation and factor analysis suggest that NH4+-N、TN and TP are well correlated with water temperature, whereas there is no significant between them and water quantity. Comparative study and cluster analysis, as well as factor analysis imply that the temporal variations of nitrogen and phosphorus concentrations in Huihe River are significant, and coincide with the seasonal variation of climatic variation of the study area. The results show that either dredging project or climate factors (seasonal changes) had dramatically affected the pollution of NH4+-N, TN and TP. Moreover, the study also confirmed that NH4+-N, TN pollution is mainly anthropogenic, different with TP pollution, who is more likely to be controlled by natural factors.
Adsorption of Corncob Hydrolysis Residue on Cr (VI)
Authors: Xue Jing Wen
Published: June 2013

Corncob hydrolysis residue was milled into powder and the fraction between 100-120 mesh was used as adsorbent for Cr (VI) ion. Results showed that the optimum adsorbing condition was: pH 1-2, 120 minutes, 80°C. Effects of particle size on adsorbing ability of corncob residue were alse investigated. Particles with smaller diameter had stronger adsorbing capacity and the proper particle size was 100-120mesh, the adsorbing capacity of corncob hydrolysis residue was 10-17mg/g.
Evaluation of the Measurement Uncertainty of Monosomic Ginsenosides in Ginseng
Authors: Zhang Min , Yang Shu Lin
Published: June 2013

[purpose] Using the liquid chromatography-Ultraviolet method ,the monosomic Ginsenosides Rb1 content is detected, and evaluated the measuring uncertainty of the monosomic Ginsenosides Rb1 content. [method] Analyzing the main source of the uncertainty components, finally evaluating and calculating the uncertainty components. [result]The results shows that, when the monosomic Ginsenosides Rb1 content is in the range of 0.02-0.12mg/ml, there is a good linear relation, and the linear equation is A=13651.52c+0.1430, r=0.9999 (coefficient correlation) For example, when the content of monosomic Ginsenosides is 0.3421%, the expanded uncertainty of monosomic Ginsenosides measurement is U=0.0236%(K=2). [conclusion]This study provides a reliable theoretical basis for the effective controlling the quality of monosomic Ginsenosides Rb1 content measurement.
The Phase Transformation and Magnetic Properties in Ni-Mn-In Alloys
Authors: Yan Hai Le , Li Zong Bin , Zhang Chun Yang , Zhang Yu Dong , Esling Claude , Zhao Xiang , Zuo Liang
Published: June 2013

The phase transformation and magnetic properties of Heusler-type Ni50Mn50-xInx (x=10~16) ferromagnetic shape-memory alloys have been systemically investigated by differential scanning calorimetry and vibrating sample magnetometry. It is found that the phase transition temperatures show a linear relationship with the In concentration and the curie temperatures of austenite phases are not sensitive to the alloy composition. The existence of large magnetization change during the magneto-structural transition is the origin of magnetic-field-induced transformation effect.
First Principle Study on Mn-Doped Ceria with Different Doping Concentration
Authors: Yan Zhi Guo , Zhu Tong Jun , Xuan Ai Guo , Wu Yuan Xin
Published: June 2013

First-principle software bundle based on the density functional theory (DFT) is used to investigate pure CeOB2B and Mn-doped CeOB2B with different doping concentration. The structural model of CeOB2B crystal is constructed and geometrically optimized, the electron density of states and band structure calculated. The results are as follows: the valence band top of CeOB2B is made up with O2p and Ce5d states, and the existence of 4f unoccupied molecular orbital of CeOB2B facilitates the electronic storage. The theoretical calculation models of Mn-doped CeOB2B with different concentration are constructed and calculated, including 2*1*1, 2*2*1 and 2*2*2 supercell models. After CeOB2B is doped, hybridization happens between 4s orbitals of Mn atoms and 2p orbital of O atoms, resulting in 4s orbitals of Mn atoms lose electrons.Moreover, Mn atom is electron donor and O atoms is the electron acceptor. As the doping concentration decreases, the formation energy also decreases.And a smaller formation energy leads to a more stable structure.
Numerical Simulation and Process Optimization of Aluminum Alloy Connecting Rod Based on ProCAST
Authors: Lu Hua Feng , Chen Rong Fa , Zhao Yi Hong , Wu Long , Li Zhi Long , Yang Hua
Published: June 2013

The structural feature and technical indexes of 2A14 aluminum alloy connecting rod was analyzed. The pouring system of gravity die-casting process was initially designed according to the technical requirements. The gravity filling and solidification stages in the permanent mold were simulated by ProCAST. The simulation results show that the casting defects are predicted and the casting process are improved. The most possible section of crack defects are the transition part between the shaft and the connecting rod small or big end.
Micro Machining Simulation Analysis by Finite Element Method
Authors: Yin Zhan Min , Dai Yu Juan
Published: June 2013

Micro machining becomes more and more important with the tendency of miniaturization of components used in various fields from military to civilian applications. The finite element method software Abaqus is used to model the nonlinear thermal force coupled elastic-plastic micro machining processes. Relatively systematic simulation analysis has been introduced based on the model combining the Johnson-Cook failure criteria, element deletion strategy etc. It reveals that the size effect is dominant while the depth of cut reaches the cutting edge radius. The rake angle plays more important roles on the micro machining than that of the cutting speed.
Research Status and Development Trend of Magnetically Controlled Welding Technology
Authors: Li Hui , Sun Qing Jie , Liu Xi Ming , Zhao Hong Yun , Feng Ji Cai
Published: June 2013

The basic principle and the characteristics of magnetically controlled welding technology are introduced in this paper. The specific applications of domestic and foreign magnetically controlled welding technology in welding process are comprehensively analyzed at the moment, including the effect rule of external magnetic field on arc shape, metal droplet transfer, molten pool, weld microstructure, mechanical properties. And the key problems needing to be solved are deeply investigated. The developments of magnetically controlled welding technology in the future are also forecasted.
The Optimized Design of Manufacturing Process of Shrub Scrimber
Authors: Li Yan Fang , Hu Ying Cheng , Zhang Li , Yao Jia , Yuan Jie
Published: June 2013

In this study, the optimized manufacturing process of Shrub Scrimber has been researched by using orthogonal experiment. The dynamic mechanical properties of Shrub Scrimber were measured by Fast Fourier Transform (FFT) nondestructive testing method, and the reliability of this method was verified by the linear regression between the static mechanical properties and the dynamic one. The results showed that shrub Scrimber had excellent mechanical properties, and can be used as structure replaced natural wood. The flexural vibration test were confirmed reliable to predict the mechanical properties of Shrub Scrimber.
XPS and Spectroscopic Ellipsometry Study of Composite SiNx/DLC Prepared by Co-Deposition of RF Magnetron and Filtered Cathodic Arc
Authors: Bunnak Phuwanai , Gong Yong Ping , Limsuwan Supanee , Pokaipisit Artorn , Limsuwan Pichet
Published: June 2013

Composite SiNx/DLC films were deposited on silicon substrate by co-deposition system. The carbon plasma was generated by filtered cathodic arc source, simultaneously incorporated with silicon nitride from RF magnetron sputtering. The silicon nitride sputtering rate was maintained by fixed RF power at 100W while the arc current of FCA was varied from 20 to 80A.The SiNx/DLC film composition and optical properties were investigated by X-ray photoelectron spectroscopy and spectroscopic ellipsometry respectively. The results revealed that the atomic concentration of carbon increased while those of silicon and nitrogen decreased with increasing arc current. The oxidation was found on the film surface and related to the atomic concentration of silicon. The optical properties can be changed as a function of carbon concentration by setting different arc current. In this work, the volume percentage of carbon obtained from spectroscopic ellipsometry using Bruggeman EMA model showed good numerical correlation with the atomic percentage of carbon from XPS analysis with the range spanning across 75-95 at. %.
Research on the Processing Method of the Special Tool Pear-Shaped Needle in Spinneret Manufacturing Industry
Authors: Liu Si Yu , Feng Pei , Yang Chong Chang
Published: June 2013

Pear-shaped needle is a special tool to processing microporous on the spinneret, which is critical to the quality of the spinneret. Existing processing methods of pear-shaped needle has many disadvantages, this paper put forward a method to processing pear-shaped needle with hone grinding, and validated it by experiment.
Research on Simulation Process of Rock Broken by TBM Hob
Authors: Zhu Li Da , Wu Ji Jiang , Liu Chun Guang , Liu Wen Wen , Xu Shuai
Published: June 2013

The rock broken process was simulated by using finite element method based on the hob broken rock mechanism. The rock broken shape was analyzed by adjustment numbers of hobs and angles of hob. The destruction of rock was the presence of both compressive failure and shear failure. The main destruction of rock was compressive failure with single hob. The main destruction of rock was shear failure with multiple hobs. It could be found that the main destruction of hard and brittle rock was shear failure but shear failure of softer rock was relatively small through rock breaking process of three hob in different sequentially angles.
Research on Bending Angels of Laser Peen Forming without Confine Layer
Authors: Ding Hua , Zhang Run , Wang Yun Long , Wu Bo , Zhou Ming
Published: June 2013

As a new technology in the field of sheet metal plastic forming, Laser peening forming is a new invention which is based on the laser radiation induced shock waves. In the paper, the orthogonal experimental design is adopted to analyze the interaction of different processing parameters with the sample. Laser bending of thin 1060 pure aluminum sheet with the thickness of 0.25mm was studied by changing the laser energy, scanning velocity, and scanning times to understand the effect of process parameters. The results show that the three parameters have different effects on bending angles, scanning velocity ranks first, followed by scanning times and laser power in terms of their effects on the deformation angle.
Study of Hot Deformation Behavior in GH4169 Superalloy
Authors: Wen Dong Xu , Lin Y.C. , Chen Ming Song
Published: June 2013

In order to study the workability and optimize hot forming processing parameters for GH4169 superalloy, the hot deformation behaviors are investigated. The results show that the flow stress strongly depends on the strain rate, deformation temperature and strain. With the increase of strain rates and the decrease of deformation temperature, the flow stress increases. The flow stress exhibits an initial increase with the strain until a peak stress value, showing a obvious work hardening. After the peak stress, increasing strain results in the decrease of stress, indicating a dynamic flow softening. A revised constitutive equation incorporating the effects of temperature, strain rate and work-hardening rate of the material is established by compensation of strain. A good agreement between the measured and predicted results shows that the established model can give an accurate prediction of the flow behavior of GH4169 superalloy.
Springback Distortion Research on Offset Strip Fin Based on ANSYS
Authors: Liu Yao Lin , Zhang Shun De
Published: June 2013

ANSYS/LSDYNA is applied to simulate the sheet forming process and the springback distortion process. The springback result of sheet and stress, strain in process will be obtained. The influencing factor to the springback includes bank holder force, sheet thickness, velocity of punch, and cutting tool radius in process. The springback law can be used to compensate the mould design. Therefore, the structural parameters of the fin forming machine and the process parameters of relative mould device will be optimized. Then the accuracy of offset strip fin will be improved , it will provide a reliable basis for the Fin structure optimization design.
Thermal Deformation Property and Constitutive Model of AZ80 Magnesium Alloy
Authors: Wang Fang , Wang Zhong Tang
Published: June 2013

Thermal Deformation Property and Constitutive Model of AZ80 Magnesium Alloy had been studied with thermal simulation experiment. Dynamic recrystallization for AZ80 magnesium alloy had occurred under different strain rate at 583K(310°C). Dynamic recrystallization had occurred more completely and the grain size was reducing with increasing of strain rate. Dynamic recrystallization had occurred more completely and the grain size was reducing with increasing of strain rate. According the Arrhenius equation, a kind of constitutive equation of AZ80 Magnesium alloy which considered the strain had been put forward, and the relative errors between calculation results by the stress-strain model and experiment results are less than 10.5%.
Research and Application of Finite Element Method on the Simulation of Graded Self-Lubricating Ceramic Tools
Authors: Wang Chun Lin , Xu Chong Hai , Xu Xiu Guo
Published: June 2013

The introduction and application of common finite element method (FEM) about the modern metal cutting theory research was stated emphatically. Graded self-lubricating ceramic tool materials was briefly introduced, and problems existed about simulating the metal cutting process using FEM are pointed out and discussed in this study.
Extreme Pressure Property of Rare Metal Zirconium
Authors: Yu Hui Li , Wang Yan Wei
Published: June 2013

This article studies through experiments the anti-wearing property of the organic compound of rare metal zirconium as extreme pressure (EP) additive for lube oil. It proves the extreme pressure (EP) anti-wearing property of the rare metal zirconium is far better than that of traditional lead. We have developed a new type innocuous and highly efficient EP anti-wearing additive the organic compound of metal zirconium.
Transient Liquid Phase Bonding of T91 Steel Using Two-Step Heating Process
Authors: Wang Xue Gang , Li Xin Geng
Published: June 2013

A novel two-step heating process, consisting of a short-time high temperature heating followed by isothermal solidification at a lower temperature, was used to transient liquid phase (TLP) bond T91 steel. The interface morphology of the joint was investigated and compared with that of conventional TLP bond made at a constant bonding temperature. The results show that the two-step heating process produces a non-planar interface at the initial stage, which is different from the planar interfaces associated with conventional heating process. No interface can be found in the final joint by two-step heating process, however, a planar interface still exists in the final conventional TLP bond. Therefore, the bending ductility of the joint is dramatically improves by the two-step heating process, and the joint properties are similar to that of base metal.
Effect of Finish Rolling Deformation Conditions on Microstructure Refinement of Ultra-Deep Drawing Hot Rolled Steel Sheets
Authors: Li Xin Cheng , Zhuang Zhi Ping , Zhu Wei Xing , He Jian Hua , Jiang Tao , Yang Long Sheng
Published: June 2013

To obtain fine-grained products of ultra-deep drawing hot rolled steel sheets,effect of deformation,deformation temperature,deformation rate on microstructure refinement were investigated through multi-pass hot-rolling finish-rolling process test.Experimental results show that gain size decreased with the increase of total deformation and the first-pass deformation in a certain finish rolling temperature range.Gain size decreased with the decrease of deformation temperature and the increase of deformation rate.Through the industrial test rolling,grain size of hot rolled steel sheets was up to 8.5.
Analyse and Control Research about the Cause of Shape Defects on Hot-Rolled Strip Steel
Authors: Li Xin Cheng , Jiang Tao , Zhu Wei Xing , He Jian Hua , Li Ai Qun , Shao Ke Nan
Published: June 2013

Strip shape defects, especially the crown problem, once appeared in the production of hot-rolled strip steel in SG Company. The macroscopic characteristic is the thickness difference occurred between the center and edge cross section of hot-rolled plate. Morphological characteristics and forming reasons can be got by analyzing roll wear. Research shows that the main reason for the formation of crown is excessive attrition of work roll in later period, which leading to smaller roll shape. Therefore, shape defects have been effectively controlled after introducing CVC roll contour technology to optimize roll shape. Quality qualified rate of strip shape of hot-rolled strip steel is more than 99.6% percent, and it has been successfully put into application of hot rolling mill.
The Research on Two-Component Materials Mixed Method for Vacuum Casting
Authors: Zhang Zhuang Ya , Zhang Hai Guang , Liu Yuan Yuan , Hu Qing Xi
Published: June 2013

To solve vacuum casting process exist two-component polyurethane difficult to uniform mixing problems. A non-symmetric eccentric large blade agitator was proposed and the speed was period changed to strengthen the mixed effects. A fluid dynamics of variable speed agitator tank was proposed to numerical simulation flow behacior with Euler - Euler two-fluid model and the dynamic mesh (SM) method. Though numerical simulate to study flow field characteristics of variable speed agitator tank.. The experiment results show that the proposed method can not only achieve high viscosity polyurethane resin with uniform mixing, and shorten the processing time. Effectively solve the polyurethane resin materials difficult to uniform mixing problems.
Finite Element Analysis on Residual Stress of Laser Brazing Diamond Wheel
Authors: Yang Zhi Bo , Luo Pei Fei
Published: June 2013

The purpose of this paper is to simulate the residual field of laser brazing by FEM of ANSYS. The 2-D coupled field element is elected to create finite element model. The brazing experiments have been done by means of 45steel which is the matrix and Ni-Cr solder and the residual stress of the diamond wheel has been measured by Raman method. The results of measure show that the maximum stress value is less strength of diamond. The residual stress distribution is basically identical between the results of simulation and experiment. According to this paper, it is possible to decrease the costs of study by selecting reasonable processing parameters on laser brazing.
Study on Cross-Flow Solid-Liquid Separation Technology
Authors: Liu Xiao Xing , Pan Qi Ying , Su Hao
Published: June 2013

The technology, device current situation , theory ,applied prospect of cross-flow solid-liquid separation have been summarized. It has been studied to making several cuneiform slots on the rotator of traditional crossflow filter, allowing the rotator forms convergence space with canister's inside wall. When suspending liquid fill into the cuneiform convergence space, it will cause kinetic press and improve the efficiency of filtrating. .
Numerical Simulation for Distribution of Void Fraction in Water Model of Continuous Casting Mold
Authors: Zhang Tao , Luo Zhi Guo , Zhou Heng , Liu Chong Lin , Sun Jun Jie , Han Li Hao , Zou Zong Shu
Published: June 2013

According to the distribution of void fraction in water model of continuous casting mold, the influences of bubble size, water flow rate, and air flow rate on distribution of void fraction were studied by quasi single-phase model. The results indicated the distribution of void fraction generally showed a garlic shape. Both of the bubble diameter and the water flow rate have great influence on the distribution range of void fraction. Specifically the distribution range of void fraction increased with water flow rate and decreased with bubble diameter. And the gas flow rate has little effect on the distribution range of void fraction. The experiment results verified the authors model.
Effect of Single Pass Hot Rolling on Goss Texture Development in Twin-Roll Cast Silicon Steel Strip
Authors: Sun Chao , Sha Yu Hui , Zhang Fang , Zuo Liang
Published: June 2013

Single pass hot rolling was adopted to form Goss texture at subsurface layer after hot rolling in twin-roll cast oriented silicon steel strip. It is found that the intensity of Goss texture is affected obviously by rolling reduction and finishing temperature. Goss texture originates from adjacent texture components, and rarely from {100} component. An appropriate rolling temperature and reduced initial {100} texture are beneficial for generating sharp hot rolling Goss texture at relatively low reduction.
Numerical Simulation of Low-Permeability Fractured Reservoirs on Imbibition
Authors: Wu Yun Qiang , Li Jing Song , Zhang Xin Hong , Zhou Jian , Liu Tong Jing
Published: June 2013

Low permeability fractured reservoir is a special reservoir with complex fracture distribution and dense matrix. Low permeability fractured reservoir always have small porosity, low pore pressure and permeability. Therefore, low permeability fractured reservoir has low oil recovery efficiency. Besides, the developing complex process and higher costs lead to lower economic benefit. Low permeability fractured reservoir production mechanisms in the fracture system mainly by the capillary force of water into the matrix. Therefore, the hydrophilic blocks of dense, self-priming effect of capillary water is the main mechanism of oil. In this study, numerical simulation, the establishment of a dual media model analysis showed that the capillary suction from the oil production rate and the final volume flow channel structure, the capillary force, viscosity of crude oil and other factors.
Investigation and Design Analysis on Residential Area Lighting in Dalian
Authors: Wang Dan , Liu Ming , Zhang Bao Gang
Published: June 2013

nfluences of install and design of residential lighting on physical and mental health of residents in Dalain were studied by field investigation and questionnaire survey. Luminance simulation of the local light environment was analyzed by SM light environment test software. The results reflected that path luminance and entrance luminance are weak. There is a larger illumination gap between inside and outside of the district owing to bright commercial light. Part of landscape lights has a potential light pollution on the city ecosystem. Therefore scientific design and evaluation of light environment have a important influence on city life and traffic in the night.
Study on Large Stadium Space Layout Planning
Authors: Chen Xiao Jie
Published: June 2013

The city is a complex system. The construction of sports facilities is a subsystem of the city construction and the correct selection and construction is beneficial to promote the development of the city. It has become an important impetus for the development of city and will serve to undermine and hinder. On the other hand, stadium management and use depends on the surrounding environment support, venues and located in the region to other functional units coordination, organic intergrowth, will facilitate the system overall efficiency of each subsystem and the sustainable development.
The Role of the Media Facade Art in the Development of the City
Authors: Gu Li , Gu Fang
Published: June 2013

With the progress of science and technology, rapid development of city economy, city media facade become increasingly popular art form, its strong visual effect has great influence on city development.
Dynamic Stability Analysis of Steel Concrete Composite of Ribbed Shell under Stepped Loads
Authors: Chang Yu Zhen , Kang Yong Gang
Published: June 2013

A systemically study on the new space structure steel - concrete composite ribbed shell is made, which is loaded by stepped load. The ultimate bearing capacity and failure modes are investigated based on the characteristic response indicators. In the foundation of large number of parameters analysis, the influence of the span ratio, span, boundary conditions and initial imperfection on the ultimate bearing capacity and instable dynamic failure are discussed in details. All the results will provide mass of data to the investigation of failure mechanism and the property under complex dynamical loads.
Test Study on Fatigue Property for Forging and Casting Steels of Grade E
Authors: Zhang Xiao Peng , Zhang Cheng Cheng , Xing Huai Nian
Published: June 2013

The forging steel of grade E and casting steel of grade E are usually applied to making train coupler. The fatigue property tests have been carried out for the forging steel of grade E and the casting steel of grade E by using the up and down method and grouping method in the paper. The two kinds of steels fatigue limits have been obtained with the up and down method. With the grouping method, the P-S-N curve equations of high-cycle fatigue have been obtained. The confidence level is 90% and the probabilities of failure are 10%, 20%, 30% and 40%. The test results show that the fatigue property of the forging material are superior to the casting apparently . To some extent, the test results are valuable for fatigue reliability designating of train coupler.
Research on the Architectures and Murals of DongYue Temple in Jin Memorial Temple
Authors: Yan Zhang
Published: June 2013

DongYue Temple is an important part of Jin Memorial Temple, which has immeasurable cultural value. It is the indispensable supplement of various architecture artistic forms in Jin Memorial Temple. From the angle of the description of the hall buildings and murals, this article analyses the historical value, scientific value and aesthetic archaeological value of DongYue Temple.And fully reflects the Jin Memorial Temple is a rare ancient architectural complex, with the diversity of historical and cultural characteristics.
Gymnasium Building Materials Performance-Type Research
Authors: Chen Xiao Jie
Published: June 2013

Materials in sports building space plays not only a supporting role but also an important part of building exhibition. With the rise of intelligent and ecological buildings, as a building enclosure material properties and role will become more prominent. New advances in technology make material has been not just enclosure system, but with the external environment for building dialogue interface, visual, structure and control technique of bonding layer. How effectively function technology element integration in material artistic expressive force is the important thing in current material design.
Comparative Analysis of Different Types of Rigid-Pile-Reinforced Embankments
Authors: Huang Wen Feng , Mo Hai Hong , Fang Ying Guang
Published: June 2013

Due to the fact that the large bending moment and shearing force distributes at the upper-side pile of the available piled embankments when the embankment fill is thick, a rigid grid-pile composite foundation is presented. Using a comparative analysis, the force behaviors for the middle pile, side pile and geogrid in different types of rigid-pile-reinforced embankments are investigated. The research shows that the tension distributing in geogrid decreases by the setting of the pile head or the rigid grid. The setting of the rigid grid contributes obviously to decreasing the bending moment and shearing force at the upper-side pile.
Study of Seismic Inversion Technology Forecasting Sandstone Waterborne of Coal Roof
Authors: Ma Yong Qiang , Liu Ke , Chen Ting , Pei Gen Di
Published: June 2013

Mechanism of water Inrush indicates that water resources is the essential factor for water inrush, roof and floor sandstone aquifer is the main source of water in the shallow seam mining process, take advantage of the physical property that sandstone is porous medium, using logging-seismic-geological comprehensive prediction method to determine the position of the sandstone porosity where is rich in water, the delineation of the rich water area, provide the evidence for the work of mine Water.
Research on Longitudinal Cracking Behavior of Prestressed Cconcrete Hollow Slab due to Cyclic Loading Experiment
Authors: Zhao Wenxiu , Lu Ping , Wu Hai Jun , Zhou Zhi Xiang
Published: June 2013

Prestressed concrete hollow slab bridge is widely applied in the highway bridge in our country, this paper shows that longitudinal crack appeared earliest in the defective component parts based on the test of 30 m span real bridge under plate cyclic loading experiment. The test data show that at the initial stage when the load is low and crack width is narrow, cyclic loading does not exerts an influence crack development, and when the load increase and crack expand to a certain level, cyclic loading exerts an influence crack development visibly. The discipline between the crack width with loading process is also studied, and the conclusion is helpful to understand load cracking behavior under cyclic loading and damage accumulation and performance of bridges.
Design and Heat Transfer Property of the Warming Compound Blocks Contained Slag Concrete
Authors: Zheng Jiang San , Zhang Gao Zhan , Zhu Shao Feng
Published: June 2013

In this paper, a new type of warming compound blocks with slag concrete was designed and prepared. The effect of specification, hole pattern and form of warming compound blocks on the thermal property of the blocks was researched. The results show that, with the addition of slag, EPS and aerated concrete, the thermal property will be improved greatly. The thermal resistance of warming compound blocks with three rows of EPS would reach 1.13 m2•K/W, and the thermal resistance of warming compound blocks with three rows of aerated concrete would reach 0.83 m2•K/W.
The Study of Correction Method for Soil-Water Characteristic Curve of Swelling-Shrinking Soil
Authors: Du Peng , Liu Xiao Ling , Li Xiao Ying
Published: June 2013

The swelling-shrinking soil embodies the features of expanding when absorbing water and shrinking when drying out; its engineering properties are sensitive to water fluctuation. Mainstream test instruments of SWCC cannot accurately get its relationship between matric suction and water volume fraction. So a correction method based on the results of shrinkage test is carried out. The method is accomplished by using the volume deformation which is obtained in shrinkage test to calculate its real water volume fraction and then combining the results of SWCC test and finally constructing the relationship between matric suction and water volume fraction. Through real application, this method is proved to be feasible and essential.
Study on the Architectural Design with the Conception of Low Carbon
Authors: Guo Qi , Zhao Li Qiong , Liang Qiu Yan
Published: June 2013

Construction industry develops with the increase of energy consumption, and there are enormous impacts on the environment during the process of its design construction and use. However, the environment is the conditions for the survival of mankind and the basis of sustainable development of human society. This paper explores the ways to architecture design under the concept of low-carbon economy.
Creating Structural Analysis Model from IFC-Based Structural Model
Authors: Wang Xuan , Cui Zai Peng , Zhang Qi Lin , Yang Hui Zhu
Published: June 2013

In recent years, with the rapid development of the complex building structures, the lack of collaborative work platform for the information exchange between different disciplines results in the phenomenon of information gap and information isolated island. Realizing such a demand, a software was developed for supporting information transformation from IFC-format data model to structural model. In this paper, A case study was implemented to illustrate the method of structural model transformation, The results show that the software can extract the information of IFC structural model and form a corresponding structural model.
Numerical Simulation of Masonry Wall under Explosive Load inside
Authors: Liu Juan Juan , Lu Yong Gang , Lei Jin Song
Published: June 2013

The explosion process of masonry wall under interior explosive load was simulated by adopting the fluid-solid coupling method basing on the software ANSYS/LS-DYNA. The Von Mises stress nephograms and the contrast analysis of the numerical simulation results and test results were presented. The research indicates that mortar elements fails earlier than brick, a little difference exists between the sizes of the blasting hole in X and Y direction because of the transmission of blast wave in brick masonry, the size of blasting hole grows with the increase of weight of charge, and with the increasing charge, the rate of change declined gradually.
Study on Preparation of Construction Waste Paving Brick
Authors: Wang Lan Xi , Pan Guang Hui , Li Fu Yong , Wang Hai Ming , Li Guo Zhong
Published: June 2013

The construction waste was processed into recycled aggregate to produce paving brick with grade of Cc40. The influences of raw material ratio on the compressive strength of construction waste paving brick were studied with orthogonal analysis method. The results show that the optimum raw material ratio are as follows: mass ratio of recycled aggregate to cement is 3.0, water cement ratio 0.30, compound activator 1.1% (mass fraction of cement, the same below), interfacial agent 0.6%, and water reducing agent of 0.5%. In addition, mechanisms of the admixtures were further studied by SEM and EDS.
Research in the Preparation of Paving Bricks with Construction Garbage
Authors: Wang Lian Xi , Pan Guang Hui , Li Fu Yong , Wang Hai Ming , Li Guo Zhong
Published: June 2013

Construction garbage paving bricks were made of recycled coarse and fine aggregates which were prepared by the waste concrete. The influence of replacement rate of recycled coarse aggregates, water-binder ratio and excitation agent dosage on the compressive strength and flexural strength of construction garbage paving bricks were researched. The experimental results show that optimum replacement rate of recycled coarse aggregates, water-binder ratio and excitation agent dosage were 100%, 0.43 and 1.5% respectively. In this proportion, the 7d, 28d compressive strength of the products were 15.6MPa, 37.5MPa respectively, and the 7d, 28d flexural strength were 2.0MPa, 4.3MPa respectively, which fit the requirements of the Cc30 level of compressive strength and the Cf4.0 level of flexural strength involved in JCT 446-2000 "concrete pavers".
Probability Assessment of Analysis of High-Rise Buildings Seismic Resistance
Authors: Králik Eng Juraj , Kralik Juraj
Published: June 2013

This paper presents the probabilistic assessment to analyze the resistance of the unsymmetrical effects (accidental torsional effects, soil-structure interaction, and seismic action) to symmetrical high rise buildings. The Eurocode requires that the seismic resistance of structures must be checked to the accidental torsion effects. In order to cover uncertainties in the location of masses and in the spatial variation of the seismic motion, the calculated centre of mass at each floor shall be considered displaced from its nominal location in each direction by an accidental eccentricity due to the requirements of ENV 1998. Recent advances and the general accessibility of information technologies and computing techniques give rise to assumptions concerning the wider use of the probabilistic assessment of the reliability of structures through the use of simulation methods. The possibilities of the utilization the RSM method to analyze the extensive and robust tasks in FEM is presented in the case of the buildings with central core and columns system. The deterministic and probability analysis of the seismic resistance of the structure was calculated in the ANSYS program.
Study on Microstructure and Mechanical Properties of 35CrMnSiMo Cast Steel
Authors: Li Hong Bo , Cheng Han Chi , Wang Jing , Su Xing Jun , Li Chun Jie
Published: June 2013

In this article, the authors use of Si, Mn, Cr as the main alloying element, developed a tough wear resistant cast 35CrMnSiMo, after casting, to obtain a wear-resistant cast steel with a hardness and impact toughness mechanical performance testing, metallurgical microscope and scanning electron microscope analysis of the microstructure. The results show that, the cast 35CrMnSiMo 850 °C austenitizing insulation 30min and then quenched, the material water hardened degrees is much larger than the oil hardened degrees. The the water hardened than oil hardened degrees up 28.5%. Metallographic photo clearly see a lot of lath martensite, the small amount of lath martensite and retained austenite, the oil quenching microstructure edge outline is somewhat vague, while clear the water quenching microstructure edge contour darker, impact toughness with hardness is inversely proportional to the sample.
The Birth and Use of Concrete and Reinforced Concrete
Authors: Wang Fei
Published: June 2013

Concrete was used for construction in many ancient structures. Concrete technology was known by the Ancient Romans and was widely used within the Roman Empire. After the Empire passed, use of concrete became scarce until the technology was re-pioneered in the mid-18th century. The widespread use of concrete in many Roman structures has ensured that many survive to the present day. The development of reinforced concrete marked the dawn of a new age. For it was the first heterogeneous building material, using steel, cement, sand, gravel, and water. This composition possessed much better properties than each of its individual components.
Study of Surface Modification of Recycled Aggregate and Mechanical Properties of the Resulting Concrete
Authors: Yang Shu Qing , Peng Ting , Tang Wai Ching , Cui Hong Zhi
Published: June 2013

In this paper, a method of aggregate surface modification using cement paste with RLP (Redispersable Latex Powder) was proposed aiming to improve properties of recycled aggregates and the resulting concrete. In this study, the cement pastes with different dosages of RLP on RA surface modification were used and the effects on the mechanical properties of the resulting concretes were studied. The experiments were carried in accordance with specifications and test methods in Building pebble and gravel (GB/T 14685-2001) and Ordinary concrete mechanics performance test method standard (GB/T 50081-2002). The test results showed that the properties of recycled aggregates were not as good as those of natural aggregates, thus resulting in poorer mechanical properties of the recycled aggregate concrete. By means of aggregate surface modification, the values of water absorption of the recycled aggregate were reduced and consequently the mechanical properties (i.e. compressive strength and elastic modulus) of the resulting recycled concrete were increased. This research provides some useful practical insights to improving mechanical properties of recycled aggregate concrete.
Performance Analysis of Reinforced Concrete Structures Strengthened with BFRP
Authors: Kan Ze Bao , Li Yan Ru
Published: June 2013

The present status of reinforced concrete structure confined by FRP is introduced, and the recent technical researches of reinforced concrete beams and columns confined by BFRP are summarized. Based on those researches, the mechanical properties and calculation models are analyzed. At the same time, the seismic performance of reinforced concrete beams and columns confined by BFRP is also explored.
Guided Waves for Aircraft Panel Monitoring
Authors: Malinowski Pawel , Wandowski Tomasz , Ostachowicz Wieslaw
Published: June 2013

The reported research concerns experimental investigation toward the monitoring of an aircraft panel. Guided wave propagation phenomena were used to obtain information about the state of the monitored structure. A curved aluminium panel with rivets was investigated. Piezoelectric transducer was used to excite guided waves in chosen structural element. The generated signal was amplified before applying it to the transducer in order to ensure measurable amplitude of excited guided waves. Measurement of the wave field was realized using laser scanning vibrometer that registered the velocity responses at a points belonging to a defined mesh. This contactless measurement technique allowed to investigate phenomena related to wave propagation in the aircraft panel. In the first stage, due to high complexity of the element, baseline measurements were taken. Next, a discontinuity (additional mass) was introduced on the panel surface and the measurements were repeated. Signal processing methods for features extraction from signals were proposed. These features were applied in order to detect and localize the presence anomalies in the investigated panel. The signal processing was conducted in MATLAB with the procedures developed by the authors. The used measurement technology (vibrometer) allowed to register whole wavefield of the propagating guided waves. This allowed to visualize the interaction of the waves with rivets. After introducing the discontinuity on the panel surface wave interaction with it was investigated. Two positions of the additional mass were considered. One just before the riveted stiffener and second after the stiffener. Because of this the influence of the stiffener on the damage detection abilities could be investigated. It can be concluded that the guided wave can be used for monitoring of such complex structures. The vibrometer measurements allowed learn about the guided wave propagation phenomena and perform successful damage localization.
Time-Domain Hybrid Global-Local Prediction of Guided Waves Interaction with Damage
Authors: Gresil Matthieu , Giurgiutiu Victor
Published: June 2013

This paper presents a hybrid finite element and analytical method to predict the 1-D guided wave propagation interaction with damage for nondestructive evaluation (NDE) and structural health monitoring (SHM) application. The finite element mesh is used to describe the region around the damage (defects or flaws). In contrast to other hybrid models developed elsewhere, the interaction between Lamb waves and defects is computed in the time domain using the explicit solver of the commercial finite element method (FEM) software ABAQUS. Analytical methods can perform efficient modeling of wave propagation but are limited to simple geometries. Realistic structures with complicated geometries are usually modeled with the FEM. However, to obtain an accurate wave propagation solution at ultrasonic frequencies is computationally intensive and may become prohibitive for realistic structures. In response to today's complex cases not covered by the simulation tools available, we aim to develop an efficient and accessible tool for SHM applications. This tool will be based on a hybrid coupling between analytical solutions and time domain numerical codes. Lamb wave interaction with a notch is investigated by using this method, and the results obtained are with respect to transmission, reflection and mode conversion. Because of the symmetric mode shape, S0 is more sensitive to the shallow notch than A0. By making use of the fact that the reflection increases with increase in notch depth and mode conversion are maximized when the notch is around half through the thickness of the plate, the reflection and conversion coefficients can be used to characterize the depth of the notch.
Verification of Structural Health Assessment Method Using Full-Scale Collapse Test of Four-Story Steel Building
Authors: Shinagawa Yushi , Mita Akira
Published: June 2013

In this paper, the health status of a full-scale four-story steel building is investigated using the data of collapse test at the E-defense in Hyogo Prefecture, Japan. We extracted the features such as hysteretic characteristics, story drift angle, natural frequency and shapes using only the acceleration data of the collapse test. We evaluated the reliability and the correlation of the features with structural damage. Moreover, we proposed the preferred index for the damage detection.