bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on the ZnO-B2O3-SiO2 Glass-Ceramic with DTA, XRD and SEM
Authors: Li Mei , Wang Ming , Wang Mi Tang , Hao Mao Rong , Liu Zhao Gang , Hu Yan Hong , Yue Peng
Published: April 2013

The ZnO-B2O3-SiO2 base glass was prepared with high temperature melting method. The base glass powder was investigated by differential thermal analysis (DTA) and the glass-ceramic was investigated by X-ray diffraction (XRD) analysis and scanning electron microscope (SEM). The results indicated that the structure adjustment of the base glass appeared around 595°C and the exothermic peaks turned up around 740°C and 860°C in the DTA testing. But the strength of the structure adjustment and the exothermic peaks was weak. The XRD results showed that the non-crystal glass was amorphous form without diffraction peaks appearing. The crystallization glass obviously contained crystals, which were more amount of ZnAl2O4 crystal and a small amount of NaAlSiO4 crystal. Through the SEM, the surface morphology of the glass-ceramic showed that the amount of the crystal was dense.
Experimental Research of Foaming Concrete Performance at Different Water Temperature
Authors: Wang Yong Feng , Wang Yu Jing , Yue Jian Wei
Published: April 2013

Low-density foam concrete is inorganic silicate material that can replace traditional organic materials for external wall insulation system. Based on the analysis of structure formation mechanism of foam concrete prepared with chemical method, investigation by a large number of comparative tests and quantitative analysis, quantitative relationship of foaming concrete 3d, 7d and 28d compressive strength and thermal conductivity at different water temperature are analyzed. The relationship between water temperature and foam concrete strength and thermal conductivity is revealed and that finds out the best production of foam concrete temperature. And further, independent sealing pores, high mechanical strength of pore wall, pore structure approximate to sphere and pore diameter with similar and small size were all favorable factors for higher strength of foam concrete.
Influence of Load and Rotation Speed on Life of PPS Radial Bearings under Water Lubricant Conditions
Authors: Oyama Shunsuke , Koike Hitonobu , Kashima Yuji , Kida Katsuyuki
Published: April 2013

Influence of load and rotation speed on life of PPS radial bearings under water lubricant condition was investigated. RCF tests were carried out at different loads and rotation speeds until 1.0×106 cycles. After testing, rolling contact surfaces were observed by using a laser confocal microscope. From the observation, it was concluded that the life of PPS radial bearings under water lubricant condition was dominated by cracks and flaking failures. The failure of PPS bearings was caused by the flaking failures. The cracks were observed prior to the flaking failures. The life when flaking failure occur depends on the load and the rotation speed.
Environmental Assessment of Production of Thermal Insulation Block from Secondary Raw Materials
Authors: Struhala Karel , Stránská Zuzana , Matějka Libor , Pěnčík Jan
Published: April 2013

The aim of the research carried out under the grant FAST-J-12-1773 is the optimization of the proposed mass production of newly developed thermal insulation composite material in terms of its impact on the environment without causing a disproportionate increase in costs. This paper presents current results of research - life cycle assessment (LCA) of the production of thermal insulation block made of composite plastic. LCA methodology that was used for this assessment is contained in international standards ISO 14040 and ISO 14044.
Isothermal Transformation of Wustite for Low Carbon Micro-Alloyed Steel
Authors: Liu Sheng , Tang Di , Wu Hui Bin , Cai Zheng Xu
Published: April 2013

The isothermal transformation of wustite (FeO) in the range of 650~350°C was studied using Gleeble 3500 thermal simulated test machine, electron back-scatter diffraction (EBSD) and scanning electron microscopy (SEM). A wustite layer was initially formed by oxidizing low carbon micro-alloyed steel in air at 880°C for 20 seconds. The layer was then isothermally annealed at 650-350°C in argon for up to 10000 seconds. The transformation of FeO was comprised by a proeutectoid reaction and a eutectoid reaction. FeO initially transformed to Fe3O4 by proeutecioid reaction and then the retained FeO transformed to lamellar mixture Fe+Fe3O4 by eutectoid reaction. The proeutectoid and eutectoid reactions both followed a C-curve trend and the nose temperatures were 475°C and 425°C, respectively. An isothermal transformation (IT) diagram was summarized based on our results.
The Research of the Application of Smart Coatings on Architectural Ornaments
Authors: Wang Jing Jing , Hu Wei Ping , Yang Xiao Ping
Published: April 2013

The understanding of the coating material is the premise and guarantee of conducting architectural ornaments. However, the traditional ornaments have the disadvantages of high pollution, monotonouscolor, weak functionality and poor formative nature. The paper is aimed at researching about smart coatings and its application on architecture ornaments and trying to solve these problems. As an important material, it has great significance for improving people’s living environment and protecting environment.
Research on Sol-Gel Transition Process of Gelatin
Authors: Chen Xi Liang , Shi Qing Nan
Published: April 2013

As a kind of functional material, gelatin gel is widely used in controlled drug release, biological tissue engineering, photographic and food industries. Plenty of studies on the gelatin gel have been carried out by researchers, which include gelation mechanisms, gelation kinetics, analysis on the crosslinked structure and macroscopic performance during the gelation process. Numerical simulation is a new method used in the study of gelatin sol-gel transition process, which can make up for the deficiency of the experimental research. E.g., the dynamic gelation process makes it difficult to measure the structural and performance parameters in time and space scales in experiments. However, these problems have been solved by numerical simulation method in our previous work. The experimental, theoretical and numerical simulation research on sol-gel transition of gelatin is reviewed, and the progress and difficulties in this field are discussed.
Study on the Preparation and Catalytic Property of Sulfonated Ordered Mesoporous Carbon
Authors: Zhang Xiang Jing , Wang Yuan Yuan , Hao Cong , Wu Peng Tao , Jiang Zi Chao
Published: April 2013

Sulfonated ordered mesoporous carbon (SOMC) has been used as a new catalytic material in heterogeneous reactions for it can replace many conventional homogeneous acid catalysts. At present, it was obtained mainly through sulfonating the surface of mesoporous carbon by post-processing method, which contained relatively complex process and rigorous condition. In this work, SOMC was prepared directly via pre-processing method. The structure and morphology of SOMC were characterized by means of FT-IR, XRD, TEM and BET, the catalytic performance was investigated by the acetalization reaction between benzaldehyde and n-butyl alcohol as a model reaction. The result showed that SOMC has excellent high surface area and uniform mesostructure when the mole ratio of phenolic resin: sulfuric acid: F127 was 1: 2: 0.0238 and carbonization temperature was 600°C. In the acetalization reaction, the yield of acetal of using SOMC material as catalyst was 87.1%, much higher than that of using HY zeolite, which shows that the SOMC has excellent catalytic property in the catalytic reaction of acetalization.
Effect of Sb Substitution on the Crystal Structure and Multiferroic Properties of BiFeO3
Authors: He Bin , Xing Jie , Zhang Zi Yang , Cao Jian , Duan Yan Ting , Gu Jiang Fan
Published: April 2013

The single-phase multiferroic Bi1-xSbxFeO3 ceramics were fabricated using traditional solid phase reaction technique and the effects of Sb3+ doping on their crystal structure and ferroelectric behavior were studied. X-ray diffraction (XRD) measurement revealed that 830°C is an appropriate sintering temperature for forming a pure-phase of Bismuth ferrite structure. The average crystalline grain size of doped ceramics becomes smaller as the doping concentration x increases. The leakage current of doped sample was much reduced compared with that of BFO. The electric hysteresis loops were obtained in the Bi1-xSbxFeO3 (x=0.02), and the residual polarization and saturated polarization are 0.03 μC/cm2 and 0.337 μC/cm2, respectively.
The Influence of Tread Material Oil Aging on Tire Performance
Authors: Wang You Shan , Cui Zhi Bo , Liu Qiang , Jiang Sha Sha
Published: April 2013

In this article, tire tread rubber is analyzed. An experiment is designed to investigate the oil resistance property of the material. The micro-morphology is studied by using SEM. The hardness, size, permanent deformation and modulus are tested on the aged specimens. The DMA is used to investigate the change of dynamic mechanical parameters. At last, rough analysis for these changes’ influence in tire performance is done correspondingly. The results show that there are very great influence on tire performance when tread rubber aged by oil. Few studies in this aspect, the result is very precious and has a high value of practical application.
Preliminary Research on Brazability of SiC Particulate Reinforced Aluminium-Based Composites
Authors: Xu Dong Xia , Chen Long , Xu Bin , Han Fei
Published: April 2013

SiCp/A356 composites containing 20% (volume fraction) SiC and three kinds of different filler metals were investigated by vacuum brazing process. Brazability of SiCp/A356 composites was analyzed after nickel plating on the surface of composites and without nickel plating process. The effects of holding time on microstructure of the brazed joints of SiCp/A356 composite were studied by metallographic microscope, SEM and Energy spectrum analysis. The results showed that nickel plating on the surface of composite contributed to improve brazability of SiCp/A356 composites prominently, while inferior brazability displayed without nickel plating on the surface of composites. Hardness of joints brazed at holding time of 6 min, 8 min and 10 min were studied, consequently the hardness of the weld seam region is the highest when the holding time was 8 min.
The Impact of Porphyrin Meso-Position Steric Effect on Porphyrin Density on TiO2 Surface of DSSC
Authors: Zeng Zhe , Zhang Bao , Liu Xiu Jun , Peng Xiao , Meng Shu Xian , Feng Ya Qing
Published: April 2013

We have synthesized three novel porphyrin-based sensitizers, in which different substituents were introduced to meso- position. The relationship between meso- substituent and cell performance was investigated. We find porphyrin density could be a key point that affect cell device performance. The highest cell performance was obtained with 4-trans-vinyl- (2'-(5',10',15',20'-tetra (4''-isobutylphenyl) porphyrinato zinc(II))yl) benzoic acid, a short circuit photocurrent density of 10.25 mA cm-2 , an open –circuit voltage of 0.74 V, a fill factor of 68%, and a power conversion efficiency of 5.15% under standard AM 1.5 sunlight.
Calculating of the Beating-Up Force for 3D Weaving
Authors: Li Jia , Chen Ge , Li Shu Jia
Published: April 2013

During beating-up process in plain weaving, the weft is resisted by two forces: frictional resistance between the weft and the warp, and elastic resistance from the warp. In the process of 3D weaving, several ends of warps are inserted in multiple sheds simultaneously, the resistance force of 3D weaving is much bigger than that in traditional weaving. A beating-up mechanism should work out the range of resistance, since the movement can only be realized when the beating-up force exceeds or equals the resistance. A theoretical foundation for 3D weaving mechanism is provided in this paper by calculating the resistance force in flat weaving using integral method and then deriving the resistance in 3D based on its structural characteristics.
Kinetics and Thermodynamic Investigation of Phosphate Adsorption on AlCl3 Modified Palygorskite
Authors: Zhang Yan , Lv Xian Jun , Kou Xiao Yan
Published: April 2013

The potential of AlCl3 modified palygorskite was assessed for adsorption of phosphate from aqueous solutions. The Langmuir isotherm adequately described adsorption with an R2 goodness of fit of 0.9683. The process kinetics was found to follow the pseudo-second-order model. Positive △H and △S values indicated that the adsorption of phosphate onto AlCl3 modified palygorskite was endothermic. Negative △G showed that the adsorption of phosphate onto this sorbent is feasible and spontaneous.
Preparation of Hydrotalcites Derived Ni/Co/Cu/Fe Nanocomposite Oxides and their Catalytic Activities for Thermal Decomposition of Ammonium Perchlorate
Authors: Liu Hong Bo , Huang Zhi Yong , Guo Bing Zhi , Jiao Qing Ze
Published: April 2013

Ni/Co/Cu/Fe nano-composite oxides (Ni/Co/Cu/Fe–NCOs) were prepared by calcination of Ni/Co/Cu/Fe hydrotalcites (Ni/Co/Cu/Fe–HTs) precursors. Ni/Co/Cu/Fe–NCOs were used as new catalysts on improving thermal decomposition of ammonium perchlorate (AP). Their catalytic activities were investigated using DTA and TG–MS. The results revealed that Ni/Co/Cu/Fe–NCOs exhibited NiO and spinel phase with high specific surface areas of 90–120 m2 g–1. They have homogenous particles with average crystallite size in the range of 50–60 nm. The thermal decomposition process of AP can be accelerated by the addition of Ni/Co/Cu/Fe–NCOs. Ni/Co/Cu/Fe–NCOs achieved the purpose of improving thermal decomposition of AP based on the presence of superoxide ion (O2–) on the surface of Ni/Co/Cu/Fe–NCOs.
The Research of Konjac Glucomannan Fracturing System
Authors: Su Ying , Shen Yi Ding , Wang Lei , Wang Xiao Rong , Lai Xiao Juan , Zhang Feng San , Liu Guan Jun , Wei Zhong Qiang
Published: April 2013

Fracturing fluid was obtained by putting the organic borate and organic titanium crosslinkers into the base fluid of konjac glucomannan. The properties of the fracturing fluid were also discussed. The system was very stable until the temperature reach to 90°C. The system also performed good shear resistance ability when the shear rate was 170s-1 at 80°C for half an hour. The residue content after gel breaking and the suspended sand performance both satisfied the requirements of the operation.
OPTIMALMOULD | Cooling System Influence in Injection Moulding Cycle Time Optimization
Authors: Ramos Carina , Carreira Pedro , Bártolo Paulo J. , Alves Nuno
Published: April 2013

Most works undertaken on injection moulding cooling time optimization aimed at reducing the time required to produce plastic parts, this way minimizing industrial costs. An optimal cooling system is proposed to improve the injection moulding design. A multi-objective genetic algorithm called NSGA-II is used, to obtain the optimal parameters in the optimal-mould design. This new design method is an efficient tool to get optimal parameters for injection moulding design. A real case study was carried out to test the optimization platform.
Finite Element Simulation on Tire Rubber Extrusion Process
Authors: Wu Jian , Liu Qiang , Wang You Shan
Published: April 2013

Tires are a key part of the vehicle, mainly constituted by rubber materials. Extrusion is one of the important processes of rubber part, which is critical to the quality of the tire. Therefore, it is necessary to study the extrusion process of rubber material. In this paper, a finite element model of the rubber extrusion process was developed by using the Euler-Lagrange coupling method based on the research on rubber constitutive model. Results indicated that: extrusion expansion phenomenon existed in rubber extrusion process, which was consistent with the reality; rubber extrusion process parameters can be optimized by finite element method, and the quality of tire was also improved.
Influence of Forming Velocity on Service Performance of Resistance Wall Structural Die
Authors: Li Lu , Wang Fang
Published: April 2013

A crankshaft pre-forging with the resistance wall structural die is analyzed by the finite element method. The influence of forming velocity on the filling capacity, the maximum forming load, die surface temperature and wear depth is discussed. The results show that the values of the maximum forming load, die surface temperature and wear depth increase, while the minimum unfilled distance decreases as the forming velocity increases. It is found that increasing the value of forming velocity is benefit for improving the filling capacity. However, excessive forming velocity increasement may results in poor service life of tools. When die wear, production efficiency and cost be considered, it is indicated that the range of the forming velocity is 10-100 mm/s, the process has the optimal service performance. The analysis and conclusions in this paper are helpful in developing the technology specification of newly developed resistance wall structural die.
Modeling and Simulation of High Speed Intermittent Cutting Based on the Finite Element Method
Authors: Jiao Bin Bin , Yu Fu Sheng , Li Yun Jiang , Zhang Rong Lu , Du Gui Lin , Li Tao
Published: April 2013

In order to study the distribution of the stress field in the high-speed intermittent cutting process, finite element model of high-speed intermittent cutting is established. Exponential material model of the constitutive equation and adaptive grid technology are applied in the finite element analysis software AdvantEdge. The material processing is simulated under certain cutting conditions with FEM ( Finite Element Method ) and the distribution of cutting force, stress field, and temperature field are received. A periodic variation to the cutting force and temperature is showed in the simulation of high-speed intermittent cutting. Highest value of the milling temperature appears in front contacting area of the knife -the chip.and maximum stress occurs at the tip of tool or the vicinity of the main cutting edge. The analysis of stress and strain fields in-depth is of great significance to improve tool design and durability of tool.
Room Temperature Magnetocaloric Effect of the Cox(MnSb)1-x Compounds
Authors: Lin Jian Hua , Li Shan Dong , Wang Li Li , Qiu Jie , Cai Zhi Yi , Cao Xiao Qin , Du Hong Lei , Xue Qian , Xie Shi Ming
Published: April 2013

The room-temperature magnetocaloric effect (MCE) of Cox(MnSb)1-x (x=0.07, 0.15, 0.24) alloys has been investigated. It is revealed that the Curie temperature TC and the magnetic entropy change ΔSM are sensitive to the Co content x. When x=0.15, the MCE of Co0.15(MnSb)0.85 alloy is optimal with ΔSM=1.8 J/kg.K at 324 K under an applied magnetic field of 3 T. A second-order phase transformation occurs around TC, and the magnetic hysteresis loss thermal lag is negligible. These features demonstrate that Co0.15(MnSb)0.85 alloy is a promising room-temperature magnetocaloric materials.
Choice of Materials and Application of New Materials in Industrial Design
Authors: Chen Wei
Published: April 2013

From the perspective of industrial design discusses that product materials have the appearance feeling, processing forming, surface processing and environmental durability and other characteristics, and elaborates that in the choice of materials need to consider some factors: product function, product structure, product safety, product surface, the sense of the times of product, the using environment of product. Progressiveness of modern industrial product is not only embodied in its function and structure, but also in the application of new materials. It pointed out that material is the material basis of industrial design. With the rapid development of science and technology, the new materials emerge in an endless stream. The rich varieties and excellent performance of the new materials created good material condition for the development of new products.
Study on Melting Properties of CaO-Al2O3-SiO2-MgO System Calcium Aluminate Flux
Authors: Li Wen Ping , Chen Jun Hong , Wohrmeyer Christoph , Guan Hong Yan , Sun Jia Lin
Published: April 2013

Melting properties of CaO-Al2O3-SiO2-MgO system calcium aluminate (CA) flux were investigated through orthogonal design on three levels of four factors (content of CaO, Al2O3, SiO2 and MgO, respectively) to explore a reasonable chemical composition of CA flux. Results show that the softening temperature (Ts), hemispherical temperature (Th) and flowing temperature (Tf) of CA flux are influenced by the flux components in the order of SiO2 > MgO > CaO > Al2O3. The optimal chemical composition of flux is 3 wt.% SiO2, 6~12 wt.% MgO, 45 wt.% CaO and 40 wt.% Al2O3. Additionally, mineralogy composition analysis of flux clinker shows that the CA flux is mainly composed of 12CaO•7Al2O3 (C12A7), 3CaO•Al2O3 (C3A) and 6CaO•4Al2O3•MgO•SiO2 (C6A4MS, Q phase).
Effect of Spark Plasma Sintering Temperature on Microstructures and Properties of Copper-Diamond Composites
Authors: Niazi Abdul Rehman , Li Shu Kui , Wang Ying Chun , Liu Jin Xu , Hu Zhi Yu , Zahid Usman
Published: April 2013

Temperature being one of the most important parameters of Spark plasma sintering (SPS) and its effects on the microstructures as well as on the physical properties of copper diamond composites fabricated by mechanical mixing of copper with 70 vol.% diamond powders, precoated with 1 wt% chromium has been studied. Experiments were performed at 900°C, 1000°C and 1100 °C for 10 minutes under 50 MPa. The results reveal that sintering temperature highly influences the copper/diamond interface bonding and microstructures. The composite’s properties like thermal conductivity (T.C), specific heat (Cp), diffusivity (Dff) and relative density (ρr) were also highly influenced by temperature variations. Except the relative density, all the other properties increased respectively with increasing sintering temperature.
Study on the Formation Mechanism of Micro-Arc Oxidation Layer in Aviation
Authors: Song Li Min , Li Song , Liu Xiu Juan , Jin Dun , Hu Tie Yu
Published: April 2013

Since the inception of micro-arc oxidation technique, the research on the mechanism of micro-arc oxidation has never stopped. During this period, the research on micro-arc oxidation process of breakdown phenomenon is in depth, and the breakdown model also has been established. Because the micro-arc oxidation process involves many complicated phenomena such as heat, light, electricity, there are a lot of difficulties to deal with. Therefore it has not the perfect qualitative and quantitative model to explain all the phenomena. This paper reviewed the research progress of the mechanism of micro-arc oxidation, observed and analyzed the phenomena and the possible reactions of micro-arc oxidation process at all stages. This paper also discussed plasma’s important role in the process of micro-arc oxidation.Since the inception of micro-arc oxidation technique, the research on the mechanism of micro-arc oxidation has never stopped. During this period, the research on micro-arc oxidation process of breakdown phenomenon is in depth, and the breakdown model also has been established. Because the micro-arc oxidation process involves many complicated phenomena such as heat, light, electricity, there are a lot of difficulties to deal with. Therefore it has not the perfect qualitative and quantitative model to explain all the phenomena. This paper reviewed the research progress of the mechanism of micro-arc oxidation, observed and analyzed the phenomena and the possible reactions of micro-arc oxidation process at all stages. This paper also discussed plasma’s important role in the process of micro-arc oxidation.
Technical Principle and Working Properties of Sludge Dredging by Airlift Water Jet
Authors: Yang Xiao Feng , Kang Yong , Wang Xiao Chuan , Li Deng , Liao Zhen Fang
Published: April 2013

The sludge in rivers, dams and municipal facilities have caused increasing attentions. The airlift water jet can make density difference between sludge and the environment, and make the sludge float automatically. A kind of airlift water jet dredging system is designed and its work properties are analyzed. Mechanical structure analysis shows that the airlift water jet dredging device is low energy consumption and easy of maintenance with low cost. Numerical Simulation shows that the bubble volume ratio will affect the flow performance: the bigger bubble volume ratio will generate higher transport capacity.
Thermal Stress Analysis for Local Heating Variable Cross-Section Roll Forming
Authors: Gao Jin Feng , Li Qiang , Zhao Wei
Published: April 2013

This paper makes thermal stress analysis for local heating variable cross-section roll forming with ABAQUS finite element software. On the basis of traditional cold roll forming, local heating variable cross-section roll forming uses laser device to heat the sheet partly and employs ABAQUS to do thermal-mechanical coupling finite element analysis. This paper, adopting sequence thermal-mechanical coupling method, obtains the temperature field with heat transfer analysis step firstly, and then regards the obtained temperature field as known condition and employs static implicit algorithm to do thermal stress analysis, then the stress-strain field is obtained, which will be helpful in forecasting the stress-stain law of the local heating variable cross-section roll forming.
Finite Element Analysis and Fracture Forecast of U Channel Flexible Roll Forming
Authors: Zhao Wei , Yan Yu , Wang Hai Bo , Gao Jin Feng
Published: April 2013

Focus on fracture defect of DP980 in Flexible roll forming, this research have done a finite-element analysis based on explicit solver and shear damage criterion, and using element deletion of finite element software ABAQUS to realize the fracture evolution of sheet damaged area. During the modeling, parameters of fracture evolution are set, and finally gain the conclusion about the relationship between stress, strain, energy density and fracture. The research provides theoretical guidance for practical production.
Analytical Investigation on the Aging Process of Vegetable Insulating Oil
Authors: Zhang Ning , Han Ying Hui , Yang Xue , Zhang Shuo , Wei Song
Published: April 2013

Development and improvement of environment-friendly insulating oil is one of the hot topics in electric industry and academic field. Vegetable insulating oil (VIO) has the higher ignition temperature and higher flash point .The biodegradation rate of VIO is also higher, while its electrical properties are equal to mineral insulating oil. A lot of technologies, including the addition antioxidants, hydrogenation, microwave, and other related technologies, can enhance the aging resistance and improve the practicability of the VIO. In this paper, the aging mechanism of VIO was analyzed and the related modified measures were summarized, which lays the foundation for further studies.
Sapphire Substrate Ring-Belt Magnetorheological Polishing Processing
Authors: Guo Wei Jin , Guo Zhong Da
Published: April 2013

Using the ring-belt magnetorheological polishing equipment to do polishing experiments on sapphire substrate, analyzed the influence of the main process parameters on polishing, focus on the influence of the polishing liquid PH value on material removal. Experimental results show that, with the increase of the PH value of the polishing liquid, sapphire substrate material removal rate increased, the roughness value was convergence trend, roughness will increases when the PH value is greater than 12.5. In optimal conditions, the maximum material removal rate of sapphire substrate was 5.6μm/h, after polishing the original surface roughness was decreased from 11nm to 0. 84nm. The ring-belt magnetorheological finishing applicable to sapphire efficient and ultra-smooth processing.
Selection of Process Parameters for Laser Assisted Machining of Al2O3 Ceramics
Authors: Zhang X.H. , Yan C. , Chen Gen Yu , An Wei Ke , Huang Tai Ming , Liu Wei
Published: April 2013

Case Based Reasoning (CBR) is a novel paradigm that uses previous cases to solve new, unseen and different problems. However, redundant features may not only dramatically increase the case memory, but also make the case retrieval more time-consuming. In order to enhance the processing accuracy, the surface quality and the processing efficiency of laser assisted machining (LAM) of Al2O3 ceramics, a processing parameters selection was proposed. By test analysis, optimizing process parameters scope can be obtained. Such as laser power is 260 ~ 290 w, cutting depth of 0.32 ~ 0.5 mm, workpiece speed of 186 ~ 398 r/min, feed rate for 0.12 ~ 0.15 mm/r.
Comparative Study of Different Types of Flashes on the Flange Open-Die Forging
Authors: Li Lu , Wang Fang
Published: April 2013

The type of flash has great influence on the open-die forging. Comprehensive performance of different types of flashes in the same part is analyzed by the finite element method. Comparative Studies show that the resistance wall structure has the optimal filling performance, the expansion-shaped flash has the minimum deformation load and tool wear depth and the typical structure has excellent overall performance in the studied flange forging with narrow rib and deep cavity. These results are significant to the theoretical research and practical applications.
Effect of Premelted Calcium-Magnesium-Aluminate Flux on Magnesia Carbon Brick
Authors: Li Wen Ping , Chen Jun Hong , Wohrmeyer Christoph , Guan Hong Yan , Sun Jia Lin
Published: April 2013

The novel Calcium-Magnesium-Aluminate (CMA) based premelted fluxes with different concentrations of MgO are developed and their corrosion to MgO/C brick is compared with traditional fluxing practice based on CaF2 addition. Results show that the corrosion of the MgO/C brick can be reduced obviously with initial high content of MgO employed in CMA. Additionally, the corrosion could be decreased correspondingly with the increase of MgO content in CMA fluxes, and the working lifetime of ladle slag zone can be extended by adding CMA flux.
Controlled Synthesis of Calcium Carbonate Crystals with Superstructure on the Templates of Bamboo Leaves /Mg2+
Authors: Wu Yi Ping
Published: April 2013

In this paper, a kind leaf of fresh plant  bamboo, was used as template to control the growth of calcium carbonate at room temperature. The products were characterized by SEM, XRD and FTIR. The nucleation and growth of aragonite crystals were induced by making use of the bamboo leaves containing a lot of biomacromolecules in the presence of Mg2+. Different morphologies and structures of the products were obtained by adjusting the concentration ratio of Mg2+ to Ca2+. The results show that crystal morphologies of CaCO3 produced on the bamboo leaves and glass in the presence of Mg2+ were changed. The products with self-assembly and self-similarity superstructures were gained in bamboo leaves/Mg2+ system. This study may supply a new method for the synthesis of inorganic materials with superstructures.
Hardware System Design of the Control System for Three Dimensional Variable Cross-Section Roll Forming
Authors: Wang Guan Jun , Li Qiang , Qian Bo , Guan Yan Zhi
Published: April 2013

Three dimensional variable cross-section roll forming need single pass linkage and multi-pass cooperative movement to realize sheet metal forming. These movements need complex control system to be realized. So the control system hardware system design becomes an important part. This paper based on the motor drive SINAMICS S120 and motion controller D445,Constructs control system hardware system that can realize multi-axis linkage and multi-pass space-time cooperative movement, which realize the three-dimensional variable cross-section roll forming products manufacturing and provides basic support to produce parts with higher precision, less-weight and more complex components shape.
Analysis on Factors to Cause the Price Change of Building Materials
Authors: Zhou Huan , Zhao Jian Huan
Published: April 2013

Building material cost accounts for about 65% of the engineering cost, and some even reach more than 75% in the current formation of the construction installation engineering cost in our country, so the price of materials determines the engineering cost to a great extent. It is essential for proprietor to master the price fluctuations of building materials to control engineering cost, and it is also important for contractor to determine the bid price. According to the market price theory and the basic characteristic of the building materials, this paper analyses and summarizes the influencing factors of building materials price changes, and provides some reference basis for the parties of building to give a investment decision and control cost.
Monitoring of Blast Furnace Hearth Erosion
Authors: Kong Feng
Published: April 2013

The distribution function of temperature in blast furnace satisfies a series of equations. The location and shape of hearth erosion line of blast furnace can be calculated by the data from thermocouple. We use the method of perturbation solution to solve the inverse problem and estimated the error by using related mathematical theories.
A Design Method Using SOA Paradigm for Mobile Cloud Computing Services over Multimedia Convergence Networks
Authors: Kim Jeah Wan , Park Byung Joo
Published: April 2013

The Smart Phone market is gradually being extended, and Mobile communication devices in the form of a miniaturized computers has evolved. However, there are limitations due to the nature of the smart phone devices, operating systems and applications is an obstacle in driving. A solution to solve these problems for mobilecloudcomputing technology is attracting attention. However, low compatibility between services without clear standards and specifications is Free. In this paper, in order to solve these problems, utilizing SOA, mobile computing, integrated interface to configure a methodology for cloud services is proposed.
Research on Auto Matching of Measuring Points Data with CAD Model for Hull Blocks
Authors: Ren Gang , Qin Pin Le , Lin Yan
Published: April 2013

Precise matching of measurement data with CAD model for hull block is the key to accurately analysis manufacturing errors and rationally evaluate manufacturing precision. A algorithm to automatically match measurement data with CAD model is proposed. The measurement data is measured by total station, which is currently used in the shipyard. The algorithm is divided into two steps. One is rough matching and another is refined matching. Rough matching that adopts PCA algorithm can narrow the dislocation between measurement data and CAD model. The pair-wise points are matched by searching minimum distance. Initialized by the former result based on rough matching, refined matching that adopts Euler rotation theory leads to perfect matching by translating and rotating the measured points. Experimental results show that the proposed algorithm can automatically match measurement data with CAD model without prior information on transformation, and evaluates manufacturing precision of hull blocks accurately, and provides an instructive basis for subsequent assembly.
Magnetic Concentration Phase Transitions in Ultrathin Films
Authors: Afremov Leonid , Ilyushin Ilia
Published: April 2013

Modeling study of magnetic and concentration phase transition in ultrathin films of diluted magnet has been carried out under approximation of random interaction between atomic magnetic moments of nearest neighbors and within the framework of Ising model. The dependence of Curie temperature on concentration of magnetic atoms was formed. It is shown that with increasing of thickness of ultrathin film the critical concentration of transition from unordered to ordered magnetic state decreases down to the value equal to the percolation threshold.
Experimental Device of Drilling String Dynamics in Horizontal Well and its Application
Authors: Shao Dong Dong , Guan Zhi Chuan , Wen Xin
Published: April 2013

According to the principle of similitude, a simulation experimental device for investigating drilling string dynamics in horizontal well was designed and set up. The rotary speed, WOB, drilling string lateral displacement, bottom hole WOB fluctuations and lateral force of the bit, etc. can be measured under different WOB and rotary speed by the experimental device; Some debugging experiments have been done by means of the device under different weights on bit and rotary speeds. The simulated experiment has many advantages comparing to the actual experiment, such as less operators, less times and moneys. It is easy to operate, the drilling string movement can be visually observed and all of the experimental results can be used to the actual drilling.
Research on Experiment Modal Parameters Identification of Parallel Manipulator
Authors: Zhu Chun Xia , Liu Bo , Chen Zhi Wen , Wang Jing
Published: April 2013

The dynamic characteristics of parallel 3-TPT machine tool are researched by experiment in this paper. Firstly, the parameters of dynamic characteristic were identified by theoretical analysis. Then vibration model of Parallel Manipulator was built and formed vibration system for experiment analysis. Then, the modal experiment method and steps were introduced, and the experiment parameters also were identified according to the experiment results. The result dates showed that the result dates are validated. So the method is feasible by experimental verification, which provides reference for dynamic optimal design
A Reconfigurable MES Model Based on Hierarchy
Authors: Dong Rong , He Wei Ping , Li Ya Jie , Chen Jin Liang , He Yan Li
Published: April 2013

The reconfigurability of Manufacturing Execution System (MES) means that it can adapt to different manufacturing environment and application requirements rapidly and easily. A Reconfigurable MES Model (RMM) is discussed with a hierarchical architecture including Production Object Level, Business Activity Level, Business Function Level and Organization Level. The elements of each level are defined, and the implementation mechanisms of reconfigurations are analyzed in detail. Finally, an example is presented to prove the validation of RMM.
Microstructure and Magnetic Properties of Fe-Si-Al Soft Magnetic Composite
Authors: Peng Yuan Dong , Ma Jian , Zhang Wen Jun , Bao Chong Xi , Nie Jun Wu , Ruan Jian Ming
Published: April 2013

In this paper, the Fe-9Si-6Al soft magnetic composite has been prepared via powder particles coated with aluminum oxide and silicone. The magnetic properties and microstructure of Fe-Si-Al SMC has been investigated. Results showed that the powder particles surface contained a thin insulating layer made of aluminum oxide and silicone. After annealed at 800°C for 60min, the particles of component are all by themselves and the insulating layer is not destroyed. The Fe-Si-Al SMC has excellent magnetic properties. The magnetic permeability is steady with the frequency changing at 5kHz-100kHz range.
Dynamic Simulation Analysis of the Vibratory Sinking Piling System Based on AMESim
Authors: Li Xiao Peng , Zhao Guang Hui , Ju Xing , Yang Hao Tian , Liang Ya Min
Published: April 2013

The dynamic model of pile-soil system has been established, the numerical simulation has been made with AMESim, and the effect of excitation frequency and soil condition on vibration friction characteristics of pile-soil system has been studied in the process of pile driving. Comparing the curves of pile tip resistance and side frictional resistance on different parameters, the influence law of work efficiency has been obtained. With the work, the most efficient exciting frequencies can be obtained, that the efficiency of pile-soil system in civil building construction can be improved.
Optimization of Multiresponse Performance Measure in Slider-Rocker Compliant Mechanism Using Fuzzy-Taguchi Method
Authors: Dao Thanh Phong , Huang Shyh Chour
Published: April 2013

This paper focuses on the application of fuzzy logic-Taguchi method for multi-objective optimization of the flexible segment in slider-rocker compliant mechanisms. The input parameters such as input torque and crank angular are optimized with considerations of the multiple performance measures as angular displacement and stress of the flexible segment. The results found that the input torque at level 3 of 60 Nm and crank angular at level 1 of 70 degrees are favorable parameters for compliant flapper mechanism. Based on analysis of variance (ANOVA), the results revealed that input crank angular is the most significant with hightest contribution of 48%.
The Influence of Material Optical Properties on Temperature Distribution in an Automotive Lamp
Authors: Fei Zhong Xiu , Tong Shui Guang , Wei Chao
Published: April 2013

In order to improve thermal performance of an automotive lamp, heat transfer and flow process was studied and numerical simulation was carried out using NX thermal flow module. A finite element calculating model of CFD was established coupled radiation and natural convection to accurately predict lamp surface temperatures. Simulation results were consistent with the experimental data, and the validity of the computational model was confirmed. The influence due to different optical properties was researched by calculating the former model with other materials substituted. This paper presents that thermal analysis for products made by polymer material is feasible and effective.
Underwater Wet Weld Seam Tracking Based on Passive Visual Sensor
Authors: Chen Bo , Jia Chuan Bao , Feng Ji Cai
Published: April 2013

Weld seam tracking system is urgently needed in weld automation process, but it has not been well studied in underwater weld applications. This paper used visual sensor to automatically monitor the weld seam in underwater wet weld process, and image processing algorithms were developed to remove the influence of water environment on the captured image and automatically obtain the weld torch deviation, and the weld torch was adjusted automatically according to the deviation obtained by the image, experiment results showed that the system could meet the requirements of underwater wet welding process.
Characterization of Metal-Semiconductor Schottky Diodes and Application on THz Detection
Authors: Liu Hai Rui , Yu Jun Sheng
Published: April 2013

This paper presents a kind of air-bridged GaAs Schottky diodes which offer ultra low parasitic capacitance and series resistance in millimeter and THz wavelength. The Schottky barrier diodes have several advantages when used as millimeter wave and terahertz video, or power detectors. These include their fast time response, room temperature operation, simple structure and low cost. This paper describes the characterization of the metal-semiconductor Schottky diodes including principle, diode structure, non-linear voltage-current characteristic and signal-rectifying performance. For application, a quasi-optical THz detector was made by using the proposed Schottky diodes. It utilized a hyper hemispherical silicon lens to coupleand THz radiation to the diodes by integrating on a broadband planar bow-tie antenna. The measurement results of the Schottky diode based detector show a good room temperature performance.
Synthesis and Characterization of Surface Modified Red Pigment 48:2 for Electrophoretic Display
Authors: Sun Cui , Zhang Bao , Li Xiang Gao , Feng Ya Qing
Published: April 2013

Red Pigment 48:2 (PR 48:2) was coated with polyethylene (PE). The chemical constitution of the modified pigments was identified by fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and field-emission scanning electron microscopy (FE-SEM). The modified particles have good dispersity and high electrophoretic mobilities. For a simple EPD device, the contrast ratio of red-white electrophoretic fluid reached 2.60.
Graph-Theoretic Models for the Module of Safe Planning for Control Systems of Mobile Robots
Authors: Gorbenko Anna
Published: April 2013

In this paper, we propose an approach to the creation of safe planning module for control systems of mobile robots. Our approach is based on some graph-theoretic models. In particular, we consider models of monochromatic and alternating paths for edge-colored graphs.
Structure Design of a Novel Triaxial Micro-Accelerometer
Authors: Yang Fan , Yuan Ye , Ma Zhong Yi , Liu Xue
Published: April 2013

This paper reports a new capacitive triaxial micro-accelerometer which consists of four identical dual beam-mass structure. Considering the temperature characteristic, beam consistency and zero bias and other factors of the accelerometer, the arrangement and anchor position, as well as matching capacitor are studied using ANSYS software to complete the design of the overall structure of the accelerometer. The research methed having been uesd is significant for optimizing structure of the micro-accelerometer.
The Comparative Model Analysis of Electronic Button-Sewing Machine Shell Based on Simulation and Experiment
Authors: Zhang Li , Nie Guang Yuan , Wu Hong , Chen Jie
Published: April 2013

In this paper, by using finite element method and hammering pulse-inspirit method, the simulation and experimental modal analysis of a electronic button-sewing machine shell is carried out. The experiments are taken in an original condition. With both methods, the fundamental modal parameters, including natural frequencies, damping and mode shapes, are estimated and identified. Comparative analysis shows that the main mode shapes of the shell are essentially the outward-expanding and inward-contracting vibrations.
Cybernetics in Planning and Design
Authors: Sun Ke Zhen
Published: April 2013

Cybernetics in landscape architecture planning and design are discussed in this paper. There are many differences and characteristic in the area of design products compared with other industrial products. The control stages or steps include: information collection in previous designs, information feedback in the planning and design, information feedback in a building construction or in a partly-finished building, information feedback in the use of a finished building. The article studies integrated ecology and design, integrated uses in urban and landscape areas, the method of interdisciplinary working. System theory is involved in this paper to discuss relevant problems. The paper also discusses the major controllable factor in the ecological strategies, and then examines effective planning and design. This article argues the problem of ecological strategies in the landscape design and planning, and the main contents of ecological strategies. It includes the strategy of landscape sustainable development, which is in conflict with rapid economies and historic preservation, ecological conservation.
System Dynamics Mechanism Analyses on Building Materials Enterprise Factoring Risk
Authors: Cheng Guo Ping , Tang Di
Published: April 2013

Now, more and more building materials enterprise has carried out factoring bussiness. However, factoring in our country has just started, the existence of the risk formation mechanism research is still placed in the exploring stage. This paper, by using the theories of system dynamics to the enterprise factoring business risk of endogenous factors and mechanism of action was studied and analyzed, for building materials enterprise factoring business risk factors classification and research laid the foundation.
Research on Co-Branding Strategy in New Materials Industry
Authors: Wang Gen , Chen Wei Yu
Published: April 2013

In many areas of business, brand joint has been used for many large multinational corporations. This article ，firstly, it reviews the evaluation factors for brand joint. Then, it reviews the brand joint feedback effects. Then, it reviews the relative contribution factors of brand joint problems. Finally, it stated the business opportunities to the new materials industry brought by the co-branding strategy.