bluuebunny/crossref_metadata_2025 huggingface dataset:
Proportion Design of Autoclaved Cement Concrete Based on High Strength
Authors: Ni Tie Quan , Ke Chang Jun , Zhang Li
Published: December 2011

According to the particularity of the autoclaved cement concrete that partial aggregate could participate in hydration reaction in the process of autoclaving, the optimal gradation of coarse aggregate and the optimal slurry aggregate ratio is studied, and the effect of water reducing agent for fluidity of cement paste is also studied. The optimized mix design of autoclaved cement concrete based on high strength (compressive strength and flexural strength) is done by orthogonal test with four factors (water-binder ratio, type of mineral admixture, amount and sand ratio) and four levels.
Hybrid Supercapacitors Based on Polyaniline and Carbon Aerogels Composite Electrode Materials
Authors: Jin Zheng , Zhao Dong Yu , Li Bo Hong , Ren Xiao Min , Yan Shan Tao , Qin Chuan Li , Li Rui Qi
Published: December 2011

The purpose of this paper is to develop feasible composite electrodes with a long cycle life and large specific capacitance and to investigate optimal ratio between aniline and carbon aerogels (CA) materials. The characterization of the composite electrode materials was studied by using scanning electron microscopy (SEM), electrochemical impedance spectroscopy, cyclic voltammetry (CV) and the constant charge-discharge. The specific capacitance of the composite electrode materials, measured using cyclic voltammetry at scan rate of 1mV•s-1, was found to be 1139.66F•g-1. For a simple supercapcitor, the highest specific capacitance (127.53 F•g-1 at 30mA) is obtained at ratio between aniline and CA is 1:4.
Penetration Mechanisms and Ballistic Performance of TiC-TiB2 Composite Armour under the Impact of Long-Rod Kinetic-Energy Projectiles
Authors: Yang Yu Zhong , Xin Jian Bin
Published: December 2011

Based on preparing TiC-40mol%TiB2 composite by combustion synthesis under high gravity, the ballistic targets with different-thickness ceramic tiles were achieved by lateral, cover and back confinements of shrink-fit steel. Ballistic testing showed that as the thickness of ceramic tile was smaller than 12 mm, the penetration of the ceramic tile was mainly controlled by the combination of the initial-shock and steady-state penetration, resulting in poor ballistic performance of the ceramic. As the thickness of ceramic tile was larger than 12 mm, the penetration of the ceramic tile was controlled by the combination of steady-state and third-stage (projectile deceleration and erosion acceleration) penetration, resulting in improved ballistic performance of the ceramic.
Applications of Advanced Composite Materials in Bullet-Proof Fields and their Study
Authors: Zhu Jiang , Tian Yong You
Published: December 2011

The development of bulletproof materials indicates the military and scientific strength of a country in the fields of modern national defenses and military affairs. With the advancement and development of scientific technologies in the world of human being, the bulletproof materials experienced the changes from the ordinary natural plants or simple metal substances to the synthetic composite materials with high intensity. In this work, we emphasized the applications of some advanced composite materials and their study in bulletproof fields.
Studies on the Relationship of Polymer Backbone Rigidity and Properties for Proton Exchange Membranes Derived from Sulfonated Polys(Arylene Ether Sulfone)
Authors: Liu Jian Mei , Chen Shan Shan , Rong Yi , Wang Ming Dong , Wei Song Bo , Li Dong Dong , Chang Peng , Hu Zhao Xia , Chen Shou Wen
Published: December 2011

A series of novel sulfonated poly(arylene ether sulfone) (SPAES) copolymers were successfully synthesized from hexafluoro bisphenol A (6F-BPA), 9,9’-bis(4-hydroxyphenyl) fluorene (BHPF), 4,4’-difluorodiphenyl sulfone (DFDPS) and 3,3’-disulfonate-4,4’-difluorodiphenyl sulfone (SDFDPS) via aromatic nucleophilic substitution polymerization, and subsequently used to prepare proton exchange membranes. By adjusting the ratio of 6F-BPA to BHPF, the influence of the rigidity of polymer backbone on the properties of the prepared membranes was investigated in detail. The results indicated that the SPAES membranes had better stability towards water but lowered water uptake and proton conductivity with the increase in the polymer backbone rigidity.
Disulfide Cross-Linked Hydrogel Scaffold Based on Poly (Amic Acid) with Tunable Degradation
Authors: Sun Jiao Xia , Wang Yuan Liang , Ruan Chang Shun , Dou Shu Hua
Published: December 2011

The objective of this work was to create 3D hydrogel with tunable degradability for use in tissue regeneration. Therefore, we reported the synthesis and characterization of a novel degradable hydrogel based on poly (amic acid) (PAA). Unlike previously reported degradable hydrogel, these materials contained two kind of cleavable bonds to adjust their degradation. FTIR was employed to characterize the structure of PAA and hydrogels. Swelling ratio and degradation time correlated with the molar ratio of two cross-linkers and cross-linked density. The surface microstructure of hydrogels during degradation was observed by SEM. These properties changed predictably as degradation.
Research Progress of Heat Hv Insulation Resistance of Macromolecular Composite Materials
Authors: Yu Yong Peng
Published: December 2011

Epoxy resin (EP) with excellent performance was widely used as electronic encapsulation materials, but the traditional EP can not meet require of nowadays electronic encapsulation materials in wet-heat resistance, flame retardant, insulation and other performance. So the current research progress of EP with wet-heat resistance and high-performance was summarized in the field of electronic encapsulation.
The Effects of Fiber Orientation on the Vibration Modal Behavior of Carbon Fiber Plain Woven Fabric/Epoxy Resin Composites
Authors: Pei Xiao Yuan , Li Jia Lu
Published: December 2011

The modal properties of carbon fiber woven fabric / epoxy resin composites with different fiber orientation angles were studied by using single input single output free vibration of cantilever beam hammering modal analysis method. With the same fiber volume fraction, the different fiber orientation of the laminated composite has an effect on parameters of vibration mode of composites. The experimental results show that with the fiber orientation increasing, the natural frequency of laminated composites becomes smaller and damping ratio becomes larger. The fiber orientation smaller, the peak value of natural frequency becomes higher and the attenuating degree of acceleration amplitude becomes slower.
Al2O3/ADC12 Composites Fabricated by Decomposition-Synthesis Method and their Mechanical Behaviors
Authors: Jiang Lan , Shi Yu Juan , Ding Jian , Bing Chun , Fu Gao Feng
Published: December 2011

Aluminium matrix composites reinforced by Al2O3 particles has been produced by adding NH4AlO(OH)HCO3 into molten ADC12 Al-Si alloy, where the γ-Al2O3 reinforcement particles are formed by decomposing reaction of NH4AlO(OH)HCO3 during stirring. The results show that the Al2O3 particles are distributed more uniformly in the matrix than that by direct adding of Al2O3 particles. Hardness and wear properties have also been examined and the results show that the hardness of the composites increases with increasing volume fraction of the reinforced particles. Wear rate of the composites decreases with increasing volume fraction of the reinforced particles and increases with the applied load. The mechanical properties of the composites prepared by adding of NH4AlO(OH)HCO3 are superior and more wearable than that prepared by direct adding of Al2O3 particles. Wearing mechanism of the surfaces of the unreinforced alloy and composites is dominantly abrasive.
Preparation of Two-Package Inorganic Insulation Coating
Authors: Liu Chao , Ren Rui Ming , Li Guo Jun
Published: December 2011

A waterborne two-package inorganic insulation coating was prepared by using silica sol and MTMS as raw materials, acetic acid as pH adjusting agent. The results showed the viscosities of paint were closely related to ambient temperature, acetic acid content and aging time. The coating on the treated aluminum alloy was obtained through spraying and curing. The coating was cured at 80 °C had high density, good physicochemical properties and higher resistance and electrical strength.
Adsorption Activity of Low Concentration Arsenic on Fe-Doped Titania Nanotubes
Authors: Meng Fan Сhun , Jiang Fang , Zhou Yong , Zhang Jin Hua
Published: December 2011

In order to improve the properties of titania nanotubes (TNTs), Fe-doped TNTs were prepared by impregnation method. The crystalline phase, tubular structure and special surface area of TNTs were characterized by XRD, TEM and BET. XRD spectra results revealed that the crystalline phase of TNTs was unchanged after doping iron. The TEM revealed that the materials prepared by hydrothermal method had a complete tubular structure and that structure was completely intact after doping iron. The special surface areas of Fe-doped and bare TNTs were 233.9m2/g and 298.2m2/g , respectively, which indicated that the surface area was decreased after doping iron. The adsorption amount of As(Ⅴ) results reached 35.5 mg/g at 15°C for the Fe-doped TNTs, while just 10.5 mg/g for the bare ones at the same condition, suggesting the application in the treatment of low concentrations of pollutants in water as an efficient adsorbent for Fe-doped TNTs.
Preparation of Cellulose Acetate Ultra-Fine Fibers Containing Quasi-Spherical Gold Nanoparticles by Electrospinning Method
Authors: Zhao Dong Mei , Sun Li Guo , Lv Li Li , Li Jian
Published: December 2011

Quasi-spherical gold nanoparticles(Au NPs) prepared by trisodium citrate reduction of HAuCl4were dispersed into cellulose acetate(CA) ultra-fine fibers by electrospinning. The optical properties of Au NPs before and after electrospinning were measured by UV-vis spectrometer. The morphology and distribution of Au NPs in CA ultra-fine fibers were observed by transmission electron microscopy (TEM). The morphology and diameter of Au NPs/CA fibers were studied by scanning electron microscopy (SEM). The crystallinity change of CA fiber before and after adding Au NPs was characterized by X-ray diffraction (XRD).
Study of Aging Treatment on the Coating with 3%Cu/Fe-Based Alloy Fabricated by Laser Cladding
Authors: Zhou Fang , Zhu Tao , Li Gao
Published: December 2011

The composite coating with 3%Cu/ Fe-based alloy was fabricated on Q235A steel by laser cladding. The effect of aging treatment on the microstructure and properties of laser-cladded coating was investigated. The results show that there is α-Fe phase accompanied by the M7C3 with an orthorhombic crystal structure and M23C6 in the cladded coating. The preferred direction at (110) crystal plane exist in the α-Fe. The TEM observation shows that the high density dislocations exist in the martensite. When the cladded coatings are aged at 550 for 20 h and 30 h respectively, the ε-Cu particles precipitate dispersedly from the supersaturated α-Fe solid solution along the M7C3. The ε-Cu particles play the role of anchoring dislocation. The microhardness and the wear resistance of coatings are increased greatly after the aging treatment. The coating aged for 20 h at 550 presents the best wear resistance in the tested coatings. With aging time, the microhardness and the wear resistance of cladding coating are decreased.
Microstructure and Mechanical Properties of Laser Welding Joint of Inconel 718 Super Thin Sheet
Authors: Zhang Shu Guo , Chen Yu Hua , Cui Jun Hua
Published: December 2011

Nd-YAG laser welding characteristics of Inconel 718, microstructures,tensile properties,and hardness of welding joint were researched. Nd-YAG laser welding was carried out on super thin Inconel 718 sheet(0.2 mm thick) with 6 specimens. The welding parameters of these specimens are varied expect for the welding speed(0.3mm/s), gas-flow rate (5L/min) and clearance between focal point and (plate) surface(0).In this research,the tensile strength of welding joint was found to be inferior to base metal and the ductility of welds was considerably lower than base material,the microhardness in weld zone is higher than the base material hardness and the hardness is highest in center zone of welding joint. These conclusions will be in favour of the manufacture with super thin Inconel 718.
The Cohesive Energy of W and Mo Nanoparticles Based on Wulff Construction
Authors: Ma C.Y. , Han P.D. , Li H.
Published: December 2011

The cohesive energy of W and Mo nanoparticles is modeled by considering W and Mo nanoparticles as Wulff construction. The energetic characteristics of Wulff construction is described by accounting for bond number in a system. The model predictions are consistent with the corresponding experimental results, especially when the diameter of nanoparticle is smaller than 1nm, which implies the closed packed structure for small nanoparticles.
A New Method for Manufacturing Composite Ingot of 4045/3004/4045 Aluminum Alloy
Authors: Qin Ke , Cui Jian Zhong
Published: December 2011

A method for manufacturing composite ingot of 4045/3004/4045 aluminum alloy using direct-chill (DC) casting was introduced. The casting process, the temperature distribution near the composite interface and the macro- and microstructures were investigated. The results show that composite interface is well-bonded, planar and clean with little evidence of porosity, which belongs to a kind of metallurgical bonding. Also semi-solid layer with a certain thickness is formed under the effect of cooling plate, which can ensure the realization of casting process of composite ingot.
Influence of Electric Current Pulses on the Microstructure and Mechanical Properties of X70 Pipeline Steel
Authors: Dai Wen Bin , Wang Xin Li , Chen Li Li , Zhao Lin , Yu Jing Kun
Published: December 2011

The effect of high electric current pulse on the microstructure and macroscopic mechanical behavior of X70 pipeline steel was studied. With the increasing of current density, the grains become refined and the tensile strength has an evident improvement without a decrease in elongation rate. The theoretical analysis shows that two kinds of refinement mechanisms, recrystallization and phase transformation, compete when the exerted current densities differ. Therefore, the ECP treatment should provide a promising method to refine materials and to improve their physical properties by using different current densities.
Experimental Research on Bonding Intensity of Iron Ores in the Sintering Process
Authors: Long Fang Yi , Wu Sheng Li , Zhu Juan , Du Yuan , Zhang Guo Liang
Published: December 2011

The bonding intensity of four kinds of ores from Brazil, Australia and South Africa is researched in this study, and the influence factors are analyzed. The results show that, the ores of different types have apparently differences in bonding intensity, ores from Brazil and South Africa have high bonding intensity, while ores from Australia have low bonding intensity; The foundation of generation of effective liquid is adequate liquid phase fluidity and the lower porosity of core ore; The ratio of porosity of core ore and the index of liquid phase fluidity has negative correlation with the bonding intensity.
Influence of Rubber Crumb Addition to Portland Cement Concrete
Authors: Zhang Hai Bo
Published: December 2011

In this paper, two kinds of rubber surface modifying methods were studied. One was bis[3-(triethoxysilyl) propyl] tetrasulfide (Si-69) silicon alkane coupling agent and the other was crylic acid coupling agent. The mechanical properties of cement concrete with modified rubber crumb and with non-modified rubber crumb were tested respectively. The results show that as the rubber crumb addition rises, the toughness of concrete with non-modified rubber crumb increases while the compressive strength decreases, and both thoughness and compressive strength of cement concrete with modified rubber crumb increase. The chloride impermeability of the rubber concrete are much better than that of the Portland cement concrete. After surface modification the chloride impermeability can be improved more. The thermoanalysis proves that the surface of modified rubber crumb is grafted by polar function groups, so the surface changes from hydrophobic to hydrophilic. The scanning electron microscopy (SEM) analysis confirms that the interface between rubber crumb and cement matrix is improved.
Experimental Study on Residence Time Distribution of New Type Multi-Tubular Stirred Reactor
Authors: Zhao Qiu Yue , Zhang Ting An , Liu Yan , Lv Guo Zhi , Wang Shu Chan
Published: December 2011

Multi-tubular stirred reactor is an efficient pressure reactor. It is designed and developed to strengthen the mixing and mass transfer process. In order to research the flow characteristics in this reactor, the residence time distribution is measured at different rotation speeds from 50rpm to 350rpm and different flow rates from 1.8m3/h to 3.9m3/h. The relationship among mean residence time, flow flux and rotate speed is obtained.
Analysis on Residue Stresses in Coating of Thin-Wall Parts by Plasma Spraying
Authors: Niu Li Ping , Zhang Ting An , He Ji Cheng , Dou Zhi He
Published: December 2011

Residual stresses are determined by different materials and processing parameters so that it is hard to systematically carry on the experimental testing, and it also spends a plenty of time and running costs. Therefore, it is necessary to estimate the residual stresses by mathematical techniques. In this paper, a mathematical method is proposed, and the calculating results are compared with the testing results of alumina and W coatings on various matrixes (process: plasma spraying) that are highly consistent. The calculating results show that the thermal expansion coefficient, substrate preheating temperature and thickness of coating have significant effects on the residual stresses.
Numerical Simulation of the Temperature Field During DP1000 Dual-Phase Steel Resistance Spot Welding
Authors: Yu Yan , Zhou Rong Ji , Wang Feng Xue
Published: December 2011

Dual phase steel resistance spot welding process is transient, rapid, invisible, complex, which makes the physical process of welding not yet be fully understood. Both the preprocessing contact stress field and thermo - electric transient process under alternative current(AC)load of the resistance spot welding of DP1000 dual - phase steel are analyzed by ANSYS12.0 finite-element analysis software. The fusion zone formation process and the contact situation of electrode and workpiece, between workpieces, lamination surface is investigated through numerical simulation. The project can help understand the phenomenon and essence of the DP1000 spot welding optimize the structure design and process design, quality control, for the dual-phase steel in vehicle body spot welding quality control to provide theoretical guidance.
Electrolysis Process for Preparation of Solar Grade Silicon
Authors: Zou Xiang Yu , Xie Hong Wei , Zhai Yu Chun , Lang Xiao Chuan , Zhang Jun
Published: December 2011

Studied on electrorefining metallurgical grade silicon to prepare solar grade silicon(SOG-Si) with electrochemical method in molten KCl and NaF mixture salt. Molten KCl and NaF mixture salt as electrolyte, the metallurgical grade silicon as anode and little metal nickel crucible for collecting silicon powder as cathode, electrorefining experiments were performed at 800 and 2.0V for 14h under dry argon atmosphere. The results showed that the metallurgical grade silicon could be dissolved and deposited on the cathode through molten potassium chloride (KCl) and sodium fluoride (NaF) mixture salt electrolyte. The nickel crucible was full of deposit, which was pure silicon by XRD and EDS. Purity of refined silicon was close to 99.99%, most of impurities like B and P were reduced significantly. Impurity level of silicon was reduced to the desired range for SOG-Si by advancement of the materials for the cell components.
Preparation of Coal Briquette by Using Coal Waste and Coal Slurry
Authors: Lu Guang Jun , Cheng Fang Qin
Published: December 2011

Coal waste and coal slurry are the largest industrial waste generated from coal preparation plants. This paper describes a method to make clean coal briquette with coal waste and coal slurry. Two binders were used during the coal briquette making process. In addition, a mixture of cacium hydroxide and coal fly ash was added into the formulation acting as a sulfur retention agent. The results show that coal briquette strength and sulfur retention were significantly improved. For example, both wet strength and falling strength reached 99%. The sulfur retention is about 55.41%.
Study on Weldablity of Dissimilar Steel between 16MnR and S31803
Authors: Yang Li , Zhang Zhan Zhe
Published: December 2011

The weldablity of dissimilar steel between 16MnR and S31803 was analyzed and researched. By means of optical microscope (OM), the microstructure of the weld joint was investigated, which is welded by tungsten inert gas arc backing welding (GTAW) and manual arc filling welding (SMAW). The mechanical properties and corrosion resistance of the welded joint was also tested and studied. Results indicate that austenite and acicular ferrite distribute uniformly in the weld metal, which strengths the toughness and ductility of the joint. The austenite content in weld is higher than that in over-heated zone of S31803.The SMAW joint structure is coarsening than that of GTAW and has more austenite content. It is also observed that there are a decarburization layer and a carbon-enriched zone nearby the fusion line. And very small amounts of the third phase of harmful metal phase are found in the fusion zone of S31803 side. The welded joint shows the excellent mechanical properties and corrosion resistance. The impact toughness of the weld metal is higher than in HAZ of 16MnR side, and the impact toughness at GTAW side and in HAZ is superior to the SMAW side.
Effect of Amount on Expansion Property of MgO-Type Expansive Agent Used in Cement-Based Materials
Authors: Zhang Zhi Bin , Xu Ling Ling , Liu Fang , Tang Ming Shu
Published: December 2011

Previous research indicated that the expansion property of MgO-type expansive agent (MEA) strongly depended on the amount. However, the quantitative effect of amount on expansion property of MEA has not been clearly demonstrated. In the present the expansion value of cement paste with 3%, 4%, 5% and 6% MEA calcinated at 850°C and 1200 °C, and then relative expansion value was introduced to investigated the relationship between the mount and expansion of MEA. The results indicated The relative expansion of MEA calcinated at 850°C was relative invariant to curing temperature and proportional increased with the amount ratio. The relative expansion of MEA calcinated at 1200°C proportional increased with curing age, and the increasing rate rose with the amount ratio of MEA and curing temperature.
Mechanical Strength and Resistance to Ultraviolet Radiation of Repairing Mortars Based on Epoxy Resin
Authors: Liu Fang , Zhang Zhi Bin , Xu Ling Ling , Tang Ming Shu
Published: December 2011

The epoxy resin based repairing material(REM) is suitable for repairing cracks and holes in concrete or broken concrete due to its high bond strength and high durability. The compressive strength and flexile strength are 76.4MPa and ＞12.5MPa at 28d, and the retest strength still remain 73.4MPa and ＞12.5MPa respectively. The fracture location of cement mortar specimen bonded by RME is at cement mortar, that is, the bond strength between REM and cement mortar is more than mortar itself. The compressive strength of RME keeps 93.3% under ultraviolet light radiation (Peak Value 308nm, 49.5 W/m2) for 1700h.
Preparing of the Nano ATO Heat-Insulation Glass Coating
Authors: Huang Zhi Xiang , Zhang Xiang Yu , Liu Xiao Yun , Zhuang Qi Xin
Published: December 2011

In this paper, a kind of nano ATO heat-insulation glass coating was prepared by using silicone emulsion and nano tin dioxide (ATO) powder with ethanol as solvent. The properties of glass coating, such as transmittance, as well as thermal and mechanical properties, and the optimization of the ATO level were discussed. The results showed that this glass coating had good transmittance of visible light and good heat-insulation performance. The transmittance of visible light was above 75% and the highest temperature difference between the heat insulating and ordinary glass is 17°C. It had good energy-saving effect and could be widely used as architecture glass and automobile glass coating.
Preparation of Acicular γ-FeOOH by Liquid-Precipitation and Air-Oxidation Method
Authors: Meng Jin Hong , Wang Wen Ju , Tan Yu Zhuo , Sun Jie , Cao Xiao Hui
Published: December 2011

The acicular γ-FeOOH powders were synthesized by liquid-precipitation and air-oxidation method using FeCl2•4H2O as raw material. The affecting factors, which consist of alkaline ratio (OH-/Fe2+), reaction temperature and dropping speed of alkaline, were discussed. From the results, it was shown that when the ratio of OH-/Fe2+ was controlled in the range of 0.6-1.2 in the crystal seeds formation process, the pure phase of γ-FeOOH can be formed. When the ratio of OH-/Fe2+ was lower than 0.6, the γ-FeOOH crystal seeds could not be formed. While the ratio of OH-/Fe2+ was higher than 1.2, the phase of Fe3O4 appeared. According to the principle of chemical kinetics and chemical thermodynamics, the phases of α-FeOOH and Fe3O4 appeared when temperature was higher than 30°C. In the process of the crystal seeds growth, the suitable reaction temperature was at 50°C.
Preparation of the AC/TiO2 Composite Particles in Normal Temperature and Degradation of TNT
Authors: Cui Hai Ping , Yan Jun , Du Shi Guo , Wang Ming Qiu
Published: December 2011

AC/TiO2 composite particles were prepared by sol-gel method in normal temperature. Three kinds of particles were obtained by adding Phytic Acid (ab. PA), Benzoyltrifluoroacetone (ab. BTA) and SnCl4 during the preparation. The photo catalytic activity and adsorptive capability of different particles were compared. Raman analysis showed TiO2 grain on the surface of the AC carrier was anatase. FE-SEM photos showed particles with PA were homogeneously coated by TiO2, but more fine TiO2 particles were formed with BTA. The results showed that the adding of PA and BTA helped to get fine grains. The degradation ratio of the TNT solution showed that the photo catalyses activity and adsorptive capability of all composite particles were higher than that of single AC, and the accumulated degradation ratio of TNT solution reached 99.3 % (repeated by 20 times). The degradation of single AC to TNT solution is thought mainly by physical adsorption, but for other composite particles the degradation is by both of the adsorption and photo catalysis. The interface between AC carrier and TiO2 crystal may be affected by PA or BTA, and helping to form synergic effect of AC and TiO2.
Properties of LiNi0.5Mn1.5O4 /Li Cell in Ionic Liquid Electrolyte Based on N-methyl-N-propylpiperidinium Bis(trifluoromethanesulfonyl)imide
Authors: Mao Jing , Dai Ke Hua , Zhai Yu Chun
Published: December 2011

LiNi0.5Mn1.5O4material was synthesized by PVP-assisted gel-combustion method and examined as a cathode material for lithium-ion batteries, working together with a room temperature ionic liquid electrolyte and a lithium metal anode. The LiTFSI-Pp13TFSI ionic liquid electrolyte was obtained by dissolution of solid lithium bis(trifluoromethanesulfonyl) imide (LiTFSI) in liquid N-methyl-N-propylpiperidinium bis(trifluoromethanesulfonyl) amide (Pp13TFSI). The LiNi0.5- Mn1.5O4/LiTFSI-Pp13TFSI/Li cell was tested by galvanostatic charging/discharging and compared with standard carbonate/LiPF6electrolyte. At low current (0.05 C) density, the LiNi0.5Mn1.5O4/ LiTFSI-Pp13TFSI/Li cell exhibited stable cycling for 11 cycles, but it degraded rapidly in subsequent cycles. Preliminary tests showed that both the cathode and anode interfacial reaction contributed to the rapid degradation.
Effect of Sr Addition on the Microstructure of Mg-6Zn-2Al-2Ca Alloy
Authors: You Jun Hua , Zhang Wei Gang , Qiu Ke Qiang
Published: December 2011

The effect of Sr addition on microstructure evolution of Mg-6Zn-2Al-2Ca-xSr (x=0.5, 1, 2, 3）alloys were investigated by using scanning electron microscope (SEM), X-ray diffraction (XRD) and optical microscope. The result show that Sr constitutional under cooling can significantly refined microstructure of alloys and formed rod-shaped Al4Sr phase in Mg-6Zn-2Al-2Ca alloys, while alloy microstructure turned to be coarse with further increase in Sr content. The addition of Sr slows down the precipitation power of Mg-6Zn-2Al-2Ca alloys and inhabits the β phase continuous precipitation.
Precision Machining of Ceramics Plunger Matching Parts with Double Helix Groove
Authors: Tian Xin Li , Guo Fang , Wang Jian Quan , Zhang Bao Guo , Mao Ya Tao , Lin Ke Ling
Published: December 2011

In order to improve the performance of the engine oil pump, a growing number of engine designers are employing ceramic plunger matching parts instead of metal plunger matching parts due to its excellent properties. We compared the stress and deformation change of the metal and ceramic couplings by Finite Element Method (FEM), and the advantages of ceramic plunger matching parts were validated in this paper. After determining the machining technology of plunger and sleeve, the machining processes of difficult-machining positions such as inlet and outlet oil holes, spiral grooves and so on, were analyzed in detail. The results of measurement and test show that the ceramic plunger matching parts are fully suitable for the design and work requirements.
Finite Element Simulation of Linear Friction Welding
Authors: Wu Xiao Yu
Published: December 2011

The complete process of linear friction welding of titanium alloy TC17 is simulated using the finite element analysis software ANSYS in this paper. A full structural-thermal coupled transient model is also developed. The results of the temperature field and stress field are discussed. The influence of welding parameters on the temperature field is analyzed. The method will provide guidance for the development of the linear friction welding process.
Research of Tool Wear Monitoring Based on Hurst Exponent Extraction of Cutting Surface Texture
Authors: Sun Lin Li , Zhao Li
Published: December 2011

A new approach using Hurst exponent extracted from the texture of cutting surface was proposed to characterize the nature of the observable long-term-memory power system function of cutting process. Hurst exponent extraction algorithm was given. The cutting images were gotten from the experiment of tool wear monitoring system. Then the Hurst exponent is extracted from the images during the cutting process. Experiments show that the reduction of Hurst exponent reflected the tool wear process and the Hurst exponent can be a monitoring feature.
Classification Inversion Algorithm of Spheroidal Particle Size Distribution Based on the Light Extinction
Authors: Tang Hong , Zheng Wen Bin
Published: December 2011

In light extinction particle sizing, a classification inversion algorithm is proposed for the non-spherical particles. The measured spheroidal particle system is inversed with different particle distribution functions and classified according to the inversion errors in the dependent model. Simulation experiments illustrate that it is feasible to use the inversion errors to inverse the spheroidal particle size distribution in the light extinction particle sizing technique and the inversion results are steady and reliable, which avoid the defects that the type of the size distribution must be assumed beforehand for the light extinction method.
Investigation of Mass Sensitivity for the Piezoelectric Diaphragm Biosensor
Authors: Li Shao Kang , Ren Wei , Chen Xiao Feng , Yao Xi
Published: December 2011

The mass sensitivity of a piezoelectric diaphragm biosensor has been investigated. The piezoelectric diaphragm utilizing a flexural vibration mode is an acoustic wave device which can be immobilized with a bio-molecular recognition layer on its surface. The mass sensitivity of the sensor was analyzed by the approximately theoretical and FEM methods, respectively. The sensitivity formula expressed by the structural parameters and the material parameter was educed for easy computing. The procedure utilizing Rayleigh method for the analytic solution of the sensitivity was introduced. The expression was verified by using a commercial FEM software package, ANSYS. The simulations are well consistent with the theory.
Design of Interpolation Algorithm in the Multi-Axis Motion Control System
Authors: Shen Hai Ming , Wang Kun Qi , Tian Yong You
Published: December 2011

This paper describes an interpolation algorithm in the multi-axis motion control system, which can achieve six-axis interpolation operations, greatly improving the processing efficiency. Using modular design idea on the Quartus II platform, by DDA interpolation theory, interpolation modules are built through VHDL. And these interpolator modules are connected into schematic diagrams. By those schematic diagrams a linear interpolator, a circular interpolator and a composite interpolator are formed. The corresponding functions of those interpolators have been simulated on the Quartus II platform. The simulation shows that this interpolation algorithm is effective to complex multi-axis motion control system.
The Design of an Intelligent Tracing Car Controller
Authors: Li Dang Juan
Published: December 2011

We focus on the design of an intelligent tracing car controller based on analog circuits. In this work, detectors, processing unit and driver module are acted as the Infrared tube, LM393 and the switch of transistor circuit respectively. The voltage comparison and filtering are finished after analyzing and processing the track information acquired. And the signal controls the driver circuit action. Therefore the intelligent tracking process was realized. The physical test results show that the design is simple, stable working and good following mark ability.
Dynamic Analysis of Three-Dimensional Flexibility of Gear Structure Based on Finite Element Method
Authors: Chu Miao , Tian Shao Hui , Zhang Yan Chao , Pan Xiao Chun
Published: December 2011

The paper established a three-dimensional flexibility dynamical model of gear structure based on the theory of finite element method. It presented the natural frequency of the gear elastomer and the analytical expression of natural functions and the simulative results. The results showed good agreement. This provided a study method for the vibration analysis of the gear structure body, and established the basis for studying the characteristics of acoustic radiation and the dynamic design of gears.
Current Research Progress of Micro Electrochemical Machining Technology
Authors: Zhang Chang Fu , Xu Shi Yu , Wang Fa Guang
Published: December 2011

Micro electrochemical machining (micro ECM) is one of the most important micro manufacturing technologies. It’s recent advancements are summerized and elaborated based on large amounts of latest research documents and its future development trends are concluded. Study shows that micro ECM with nano-scale or micron-scale will get great progress when some unsolved problems are addressed.
Modular Process Planning in Sheet Metal CAPP System
Authors: Bai Yu , Li Chang Ye , Cao Yan , Sun Bo
Published: December 2011

The shape of metal part is complicated, and its process planning requires high standardization in sheet metal manufacturing. Sheet metal can be modularized for its diversification and succession feature. Modular process planning is discussed by contrasting traditional process planning, and modular process development steps are described. The modularity of process can improve the efficiency and accuracy of process planning for sheet metal computer aided process planning.
Key Technology and Application of Workshop Production Management System
Authors: Fang Ya Dong , Wang Fang , Sun Bo
Published: December 2011

Abstract. In order to resolve problem of production plane and dispatch problem in manufacturing plant, a new production management system is proposed, and the key technology and application of system is discussed. Generation technology of dynamic structure tree is firstly introduced. More ever, dynamic report generation technology is also discussed and based data, and information management is realized based on JSP technology. Lastly, typical interface of workshop production management system is described.
Research on CNC Process Parameters Optimization Based on Process Planning Knowledge
Authors: Gao Xiao Bing , Xue Yan , Wu Fu Jia
Published: December 2011

CNC milling process parameters is the key issue to improve quality and productivity of product and save cost. Especially, in the end milling of the pockets, the radial depth and real feed vary as the end mill moves along the corner. This will result in the unstable of the cutting force and the bad accuracy of the milled pockets. In this paper, according to analysis of CNC machining process, the model of dynamic cutting force based on knowledge in the end milling of the pockets is established, which is predicted by the model of cutting force coefficient. The optimization milling parameters can be calculated in terms of the model of dynamic cutting force in the pockets, work piece material properties. In the end, the experiment proves the process of optimization.
The Assessment of Product Information Quality in Digitization Manufacturing Processes
Authors: Yu Guang Wei , Deng Dong Hua , Zhao Jing Jing , Xu Xian Long
Published: December 2011

Information quality of product plays a very important role in digitization manufacturing. In this paper, firstly, the content of product information in digitization manufacturing processes is analyzed in detail. Then, assessment index system of product information quality is constructed. Thirdly, assessment method of product information quality based on fuzzy comprehensive evaluation is also proposed. Finally, an investigation of product quality inspection and measurement information in one enterprise proves that the method can assess product information quality in digitization manufacturing effectively, which lays a foundation for decisions-making.
Failure Analysis and Design Improvements of MEMS Explosive Interrupter
Authors: Tian Zhong Wang , Zhao Xu , Fan Cheng Yang
Published: December 2011

Due to deformation of the cantilever and lock, the MEMS explosion interrupter used in fuze often cannot move properly. An explosion interrupter with improved strength is proposed. The caudal shape of the cantilever is improved and its structure is changing from the straight hook to the bend hook. The thickness and the patulous angle of the lock is enhanced. Simulation results show that the improved caudal shape of the cantilever is not stuck by the baseplate boss and the improved lock could enter into the locker successfully. The explosion interrupter moves in-position under centrifugal force and be locked.
Lightweight Design and Analysis of Beer Packaging Material
Authors: Yuan Wei , Yao Hui , Xie Li Hua
Published: December 2011

The main ways of Beer packaging lightweight design were explained. ANSYS was applied to carry on the simulation analysis of PET beer bottle. The influence of bottle's thickness was introduced. The results provided the valuable method and reference for the structural optimization design and application of PET beer bottle.
Simulation and Analysis of Measurement Method for Projectile Axial Acceleration by MEMS Sensor
Authors: Huo Peng Fei , Wang Chao , Qi Ke Yu
Published: December 2011

Measurement of axial acceleration is necessary for projectile range prediction. Three measurement methods, dual-accelerometer configuration, dual-accelerometer filtering and direct filtering, are used to eliminate acceleration measurement errors caused by accelerometer configuration location, installation errors and space rotating of projectiles. Based on six-degree ballistic trajectory model, the three measurement methods of projectile axial acceleration are simulated, and the simulation results show that standard deviation of dual-accelerometer configuration measurement error is 35.7318, while standard deviation of dual-accelerometer filtering measurement error is 2.2958 and direct filtering measurement error is 0.3344.
A Rapid Separation Method for Nonuniform Image Segmentation
Authors: Liu Jun Qiang , Wu Fu Jia , Tian Jun Wei , Gao Xiao Bing
Published: December 2011

It is difficult to separate objects from an image when its background is nonuniform. Traditional methods tend to get obvious targets by using many different algorithms, such as Ostu, morphology, etc. But it frequently fails in extracting objects with different size and shape in nonunfirom background. A new method is proposed for nonuniform image segmentation in this paper. First, on an initial image, grid sample method is performed to reduce data space and prepare for background estimation and an example image is formed by those grids. Then, Gaussian Low Pass Filter (GLPF) is used to filter the noise point in the small image. Then, the next step is to magnify the area of this example image through an interpolation algorithm. Facet Model is used to estimate the background image. Finally, the object image can be acquired by the initial image substracting this estimated background image. Experiments are performed and according to the results, the validity and adaptability of the method is enhanced obviously, compared with conventional image segmentation algorithms.
Design of High Speed and Parallel Compression System Used in the Big Area CCD of High Frame Frequency
Authors: Liu Yan Yan , Gao Yin Han , Li Guo Ning , Wang Wen Hua , Zhang Ran Feng , Jin Long Xu
Published: December 2011

According to the area CCD camera of characteristics, such as high resolution capacity and high frame frequency, this paper puts forward a high speed and parallel image compression system of high integration degree. Firstly, according to the work principle of the area CCD, FPGA is adopted to realize the timing driving and multichannel and parallel analog signal handling to raise the export frame frequency of the area CCD. Secondly, with an image compression scheme based on FPGA embedded processor MicroBlaze and ADV212 compression chip, real time image compression and the high speed area CCD are realized. Finally, by detecting the analog signal of the area CCD output, the real time compression of the big area CCD image is carried out in different compression ratios and the compression performance is analyzed. Experiment result shows that this scheme can realize real time image compression with the biggest data rate of 520Mbps. When compression bit ratio is 0.15, the signal-to-noise ratio of peak value can reach 36 dB. Image collection and image compression are integrated, which reduces the data transmission between them and improves systematic integration degree.
Structure and Properties of Bi0.5Na0.5TiO3-BaTiO3 Compound Ceramics
Authors: Li Xiao Juan , Xi Zeng Zhe , Long Wei , Zhang Zhi Gang , Zhang Jia
Published: December 2011

The Bi0.5Na0.5TiO3-xwt%BaTiO3 compound ceramics were prepared. The influence of different BaTiO3 content on structure was evaluated by scanning electron microscopy and X-ray diffraction analysis. The results show oriented is induced by plate-like BaTiO3 template. Signficant improvement of the piezoelectric (d33 = 112 pC/N) and dielectric properties ( max ≈ 5500) was observed. The improvement was attested to the apparent alignment of the BaTiO3 templates and grain oriented growth.
Application of Multi-Scale Morphology Gradient in the Foreign Fibers Recognition
Authors: Jin Shou Feng , Yuan Jian Chang
Published: December 2011

The extraction of edge feature is a key technology in the foreign fibers recognition. The traditional algorithm of edge detection operator is more sensitive to noise, which is unable to extract complete edge information. Based on the morphological edge detection, we can get the ideal foreign fibers edge characteristics under the condition of noise for the multi-scale structure elements, combining with inflation and corrosion operator to structure morphology gradient operator, the adjustment of morphology structure elements dimensions. Experiment results show that it has a certain feasibility and effectiveness compared to classic edge detection algorithm in the respect of restraining the noise and improving the testing precision.
Key Technologies of Computer Aided Color Design System for the Color Blind
Authors: Zhou Xian , Zhao Qing
Published: December 2011

The paper analyses the feature of the color blind when they distinguish colors, and according to their physiological feature, a new strategy of designing color based on mapping arithmetic and thesis of designing color are proposed, and a model for the color blindness to choose color in contrast is realized. Finally, the system is proved effectively through merging into the solid works software.
Research on Web Press Printing without Ink Detector
Authors: Chen Yi Jun , Kou Er Gang , Zhao Qing Hai
Published: December 2011

Printing press manufacturers need to detect assembled machine whether the printing is qualified. This wastes a lot of paper, ink and human, and is not conducive to business efficiency. In this paper, through analysis of web press, the instrument is developed that takes the paper to detect the offset with non-printing ink on the printing press, through high-precision optical sensors, it can get the offset of conveyor belt material in the course of the amount of deviation. The amount of assembly precision machine is detected based on deviation; Then design a circuit tester hardware and software; Finally, the detector was tested, the results show that the detector is designed to achieve the design requirements.
Design and Research of High-Speed CNC Platform Based on DCG
Authors: Xia Tian , Liu Peng , Jiang Xiao Yang , Huang Ying
Published: December 2011

A simplified version of the high-speed CNC platform model based on DCG is got by using the analysis software ADAMS, and then a motion simulation and vibration analysis of the simplified model and the Y axis slide carriage of traditional NC cross-shaped sliding table is carried out. The displacement of the X and Z directions from the above process can form a DCG structure which has the minimum vibration in that direction.
Static and Dynamic Characteristics Analysis of Precise Composite CNC Grinding Machine
Authors: Zhao Hong Lin , Sun Yun Fei , Chen Rui , Huang Yu Mei , Zhang Guang Peng , Wang Bo , Mu Dong Hui , Li Wei Hua
Published: December 2011

The parameters of joint parts must be included in the finite element model of a whole grinding machine. The subject investigated in this paper is B2-K3000 high-precision composite flexible grinding machine. Through finite element modeling, the joint part parameters are integrated into the whole grinding machine model to establish a dynamic model and then analyze its static and dynamic characteristics. The result shows that the whole grinding machine possesses good features, but it still needs to be improved. This paper gives suggestions for its structure development and application.
In the kingdom everybody has enough – A social-scientific and realistic reading of the parable of the lost sheep (Lk 15:4–6)
Authors: Van Eck Ernest
Published: December 2011

This article presents a social-scientific and realistic interpretation of the parable of the lost sheep (Lk 15:4–6). Attention is given to the history of the interpretation of the parable, its integrity and authenticity, and verisimilitude. It is argued that the Lukan-version (Q 15:4–6) of the parable represents the earliest layer of the historical Jesus-tradition. Specific attention is given to the social and economic registers presupposed in the parable, as well as certain cultural norms and values of the first-century Mediterranean world in which Jesus told the parable. The conclusion reached is that the parable exemplifies several aspects of the kingdom of God, aspects that are also present in several other parables that Jesus told about the kingdom.