bluuebunny/crossref_metadata_2025 huggingface dataset:
Antibacterial Activity of Nano Silver and it’s Application in Antibacterial Paper
Authors: Deng Jing , Li Wen , Tang Jian Xin , Wu Ruo Mei , Zhou Xiao Yuan
Published: October 2012

The antibacterial activity of nano silver against Escherichia coli was measured by the inhibition zone and minimal inhibitory concentrations. Results showed that the inhibition zone of nano silver was improved with the increase in concentration, and the MIC of nano silver was 15.6ppm. In addition, the antibacterial activity of the antibacterial paper was determined by inhibition zone method. The paper prepared by polyvinyl alcohol(PVA), sodium carboxymethylcellulose(CMC-Na) and starch adhesive had the greatest activity at a nano silver concentration of 400,800,600ppm respectively. The paper basis weight,tensile strength and elongation were all increased after coating.
Study on the MFR of HDPE/E-TMB Blends
Authors: Fan Wei Hua , Wang Ren Jie , Liu Yu Kun , Guo Kai , Chen Jin Zhou , Wang Jing Wu
Published: October 2012

HDPE/E-TMB and HDPE/E-SMB blends are prepared by thermal mechanical blending of toughening master batch (E-TMB) with HDPE and simple blending master batch (E-SMB) with HDPE, respectively. The difference of the melt flow rate between HDPE/E-TMB and HDPE/E-SMB blends was studied. The effects of the elastomer ratios and the ratios of matrix resin to elastomer of E-TMB, the types and the amount of anti-crosslinker of E-TMB, the elastomer content of HDPE/E-TMB blends on the melt flow rate (MFR) of HDPE/E-TMB blends were discussed.
Synthesis of Cationic Surface Sizing Agent and its Application
Authors: Zhu Xian Mei , Cheng Gang Hu , Wang Jia Jun , Wu Tao
Published: October 2012

Cationic styrene-acrylate latex as surface sizing agent had been prepared with the emulsion polymerization by use of styrene, dimethylaminoethyl methacrylate, 2-ethylhexyl acrylate, modified PVA 0588 as the emulsifiers. The infrared spectrum of copolymer and particle size and physical properties were separately determined. The results indicated that the obtained copolymer emulsion was very stable, the average molecular weight of copolymer approached about 45000 and polydispersity index was 1.6. The copolymer with higher quaternization degree had smaller particle size and narrower particle distribution when initiator had the same usage. The copolymer as surface sizing agent improved the hydrophobicity of paper, the water-proofing time approached 14.7 seconds at most, the copolymer with narrow particle distribution increased 7% sizing performance than the one with wide particle distribution.
Preparation of Amylase-Based Time Temperature Integrator
Authors: Qian Jing , Zheng Guang Lin , Feng Qin
Published: October 2012

The formulas on time-temperature integrator for insulating package transport within one week at storage temperature 4°Care given in this research. It also gets solution on sediment issue by application of malt dextrin. Experiments show that prepared enzyme-based TTI should be used as soon as possible to avoid TTI invalid.
Analysis of Structural Parameters of Flexible Spiral Conveyor Blades and Study of its Transmission Power
Authors: Tian Ye , Sun Zhi Hui , Zhang Li
Published: October 2012

A way of using flexible spiral blade as the executive part for spiral transportion was proposed, the mathematical model of its transportation resistance torque was set up, and the impact of structure parameter of flexible spiral blades on transportation power was analyzed. A experiment set-up was rigged, and tests were made to verify the theoretical model. The results of the experiment are in good agreement with the theoretical analysis. The research has enlightened the the parameter design of flexible spiral blades
An Improved Sliding Mode Control Method and its Application
Authors: Zhu Jian , Zhang Chang Fan , Cui Mao Zhen , Huang Gang
Published: October 2012

With the shaftless driving technology used in the packaging industry,servo motor control has become increasingly demanding. Beginning with the reasons of chattering, this article proposes a new sliding mode reaching law,adding a power attenuation term in front of the variable speed item,and then affects the shaftless gravure package printing chromatography system with PMSM as the actuator, improved servo motor speed range and efficency of the shaftless driving system.At last,the simulation results indicate the effectiveness of the proposed approach.
The Improvement of a Hybrid Genetic Algorithm for Three Dimensional Bin-Packing Problems
Authors: Zhai Zhen , Chen Li , Han Xiao Min
Published: October 2012

The multi-constrained bi-objective bin packing problem has many extensive applications. In the loading section of logistics it has mainly been transported by truck. The cost of transportation is not only determined by the bin space utilization, but also by the number of vehicles in transporta¬tion utilization. The type of items and bins is introduced in the mathematical model, as well as the volume of the items. In this paper, the hybrid genetic algorithm which tabu and simulated annealed rules are added for complex container-loading problem is studied. The effective coding and decod-ing method together with flow process diagrams are given.
Study on High-Oxygen Modified Atmosphere Packaging for Chilled Fresh Pork
Authors: Zhao Su Fen , Li Xin Fang , Liu Xiao Yan
Published: October 2012

Modified atmosphere packaging (MAP) is used CO2, O2, N2and other protective gas which have different effects to extend the preservation period. 2% salt and 0.3% lactic acid preservative-treated chilled fresh pork are placed controlled group, 45%, 55%, 65%, 75%, 85% of six different concentrations of oxygen with modified atmosphere packaging to test TVB-N and pH changes during storage. The results show that their fresh-keeping are followed by 75%> 65%> 55%> 85%> 45%> CK, and 75% group has the best fresh-keeping effect, and if we continued to increase the oxygen concentration, the fresh-keeping had been worse.
Research and Design of 3D Model Based on Bin Packing Software System
Authors: Zhai Zhen , Han Xiao Min , Chen Li
Published: October 2012

As a key technology, container loading problem plays an important role in improving the efficiency of distributing works, optimizing the cargos loading pattern and standardizing the business process. Based on the study of 3D model, a new bin-packing software, load optimization system, has been developed to solve complex combined loading problem. This paper emphatically analyzes the functions of 3D model and design of graphics system based on load optimization system. An open source visualization toolkit is applied to implement this system and a friendly user interface is developed on the Visual C++ development platform. The results show that 3D model plays a very important role to the visualization of load optimization system. Furthermore, this system can effectively solve 3D bin packing problem with objects of different dimensions.
A New-Type Package of Corrugation Paperboard Bracket on Electron Gun
Authors: Guo Yan Feng , Hou Jin Li , Ma Xian Ping , Xu Wen Cai
Published: October 2012

In this research work the moulded pulp of inexpensive and environmental-friendly advantages over plastic foams, excellent machining technique is applied into the transport packaging of electron gun. Firstly, three packaging protection models of moulded pulp (one layer, two layers, and three layers) on electron gun are developed on account of the structural characteristics of electron gun, which have the advantages of compact structure with placement, orientation and fixation, favorable stability, count, and dustproof function for electron gun. Secondly, the package cushioning and vibration-proof performances of these packaging protection models are respectively studied by six groups of drop shock experiments and sine vibration tests of comparison. All results show that, the three packaging protection models of moulded pulp have favorable packaging function, and can provide effective protection for the products of electron gun during storage and transportation.
Research on Drug Anti-Counterfeit System Based on Invisibly Encrypted PDF417 Barcode
Authors: Cao Le , Yuan Yan
Published: October 2012

This paper analyzes the defects in the common drug anti-counterfeit systems and introduces the basic principles of the PDF417 barcode. It discusses the invisible method of PDF417 by the IR invisible ink printing and the encryption method of treble barcodes based on DES, ECC and RSA. It also formulates a drug anti-counterfeit system based on invisibly encrypted PDF417 barcode, illustrating the working principles, the structure design and the software design of the anti-counterfeit system in details and analyzing its capability for anti-counterfeit. The result indicates that this system is powerful enough in anti-counterfeit and proper for the anti-counterfeit of drugs. Besides, it can effectively put an end to the spread of counterfeit drugs and fully protect the rights and interests of sellers and consumers.
Influence of Edible Oil Weight Filling Accuracy
Authors: Xu Yun , Xu Xue Meng
Published: October 2012

The article discusses the characteristics of volumetric filling and weighing filling for edible oil. Influence of filling accuracy for edible oil has been studied in accordance with weight filling. It pointes out that error of weight filling system results from load cell error, error caused by filling valve operating time delay, error by PLC response time delay and shock error by liquid flow. After analyzing the causes of each error, it puts forward how to improve weight filling accuracy.
Research of Calculating Corrugated Board Carbon Footprint Based on Energy Conservation
Authors: Nian He , Wang Xiao Min , Shi Xiao Juan
Published: October 2012

Based on the energy conservation, calculate the carbon footprint of single wall corrugated boards. By calculating the heat balance of each unit in the corrugated board production line, the steam quantity of each unit was calculated and translated into direct carbon emissions; indirect carbon emission was calculated by the electric carbon emission factor. Evaluates to: producing quantitative 140/110/170(g/m2) single wall board for 100m2, the direct and indirect emission of CO2 is 25.4kg and 9.4kg.
Numerical Simulation of Liquid Food Sterilization in a Still Can
Authors: Zhou Jian Wei , Liu Dong Hong , Li Dong Dong
Published: October 2012

Cylindrical liquid can of water and CMC was simulated by solving the governing equations for continuity, momentum and energy conservation, using “COMSOL®” multiphysical coupling field software package which based on finite element method of analysis. Through finding out cold spot of 100 °C, 105 °C，110°C and 115°C in the can and sterilization minimum value spot, temperature and sterilization value were compared. The results indicated that there were differences between cold spot and F minimum value spot. thus, in order to ensuring food safety, the original sterilization time should be moderately prolong, especially for thinlyfluid.
Analysis of the Volatile Compounds in Chinese Steamed Bread Packaged by PA/CPP Material
Authors: Zhang Guo Hua , Zhou Jian Wei , He Guo Qing
Published: October 2012

PA/CPP packaging material was used for Chinese steamed bread to evaluate its ability to improve quality and increase steamed bread shelf-life. The changes on the aroma volatiles during storage were assessed using by simultaneous distillation extraction(SDE) with dichloromethane and were analysed by GC-MS. The obtained results showed that there were 17 volatile components in fresh Chinese steamed bread, however, after 3 days of storage at 4°C tempreture, the flavor compounds significant decreased in the steamed bread without packaged, only 6 volatile components could be determinted. For the PA/CPP group storged at 4°C tempreture after 3 days, there were 21 volatile components identified, and most of components were the same to the fresh steamed bread.
CAE Analysis and Optimization Design for Mutual Flat Wooden Pallets
Authors: Jiang Chun Hua , Wang Yu Long , Xu Jie , Cai Li Na
Published: October 2012

Solid Edge software was used to conduct parametric design and CAE finite element simulation analysis for mutual flat wooden pallets, making the results consistent with the actual test data. Optimize the structure, size and material of mutual flat wooden pallets, select the best solution and verify it by experiments. The cost of the mutual flat wooden pallets was ultimately optimized under the premise of ensuring using security and life expectancy.
Research on the Shock Response of 3-DOF Tangent and Nonlinear Rigid Body Packing System
Authors: Xu Xiao
Published: October 2012

The buffering model of nonlinear rigid body packing system is established and the vibration equations are achieved. Through a series of transformation, the state variables of the oscillatory differential equation are obtained. The shock response spectrum curved surfaces of the system, which is shocked by the final peak pulse, are calculated by using the Runge-Kutta method.
Based on Image Processing of CTP and CTF Dot Area Coverage
Authors: Jiang Dong Sheng , Wu Ying
Published: October 2012

This paper describes the comparative analysis of both the CTP and CTF dot area ratio. The paper analyzes the advantages and disadvantages between the CTP and CTF. The difference between thermal CTP and photosensitive CTP is studied particular in the paper.
Preparation and Properties of Rare Earth Europium Fluorescent Falsification-Resistant Inks
Authors: Wei Jun Qing , Sun Cheng , Huang Li Qiang , Meng Jie , Meng Wei Juan
Published: October 2012

Ternary europium complex Eu(TTA)3Phen and quaternary europium complex Eu(BA)(TTA)2Phen were synth- esized in ethanol absolute with europium(Eu), benzoic acid(BA), α-thenoyltrifluoroacetone(TTA) and 1,10-phenant- hroline(Phen). Fluorescent Falsification-resistant inks were prepared with the synthesized fluorescent agents. IR spectrum analysis showed that these complexes collocate with Eu ions. The fluorescence property of the rare earth europium complexes were studied at ambient temperature. When the Eu(TTA)3Phen complex was excited by a wavelength of 382nm and the Eu(BA)(TTA)2Phen that of 383nm, they exhibited strong red emissive color and the peaks were at 612nm, the Eu characteristic peak was at 612nm. Rare earth europium complexes and fluorescent falsification-resistant inks appeared red under ultraviolet light and the fluorescence of Eu(TTA)3Phen is stronger than that of Eu(BA)(TTA)2Phen by the study of Fluorescence Property.
High-Speed Image Measurement Technology and its Application under Toner Drop Impact Test
Authors: Ji Hong Wei , Wang Yong , Wang Xin Yu
Published: October 2012

A transport package cushioning property evaluation test system is established to achieve the goal of high-precision, real-time, non-contact, and full-field measurement. It consists of a shock testing machine, a shock measuring instrument and a high-speed image acquisition and processing system. High-speed imaging measurement techniques and digital image processing method are used to make a comprehensive assessment on the cushioning properties of air-cushion package. In this paper, the developed system was used to measure the drop shock responses of the toner and air cushion deformation under drop impact test.
Influence of the Viscosity of Edible Ink to Piezoelectric Ink-Jet Printing Drop State
Authors: Sun Jing Mei , Wei Xian Fu , Huang Bei Qing
Published: October 2012

Piezoelectric Inkjet Printing is the main ink-jet printing at present, and drop state will have great influence to ink-jet printing quality, so the ink-jet drop state of edible ink is researched based on piezoelectric inkjet printing. The viscosity of the ink is adjusted by the way of adding different levels of resin, and then the samples which have different viscosity are got. Drop state is observed through drops observatory which installs Spectra Polaris nozzle (35pl), then the speed, volume, tail length and roundness of the drops are measured at certain moment in order to evaluate the influence of viscosity to ink-jet drop state. The result shows that viscosity has big influence to ink-jet drop state, when the viscosity becomes larger, the speed of drops becomes smaller, the variation of volume is not so obvious, the tail length of drops becomes smaller and roundness becomes larger accordingly, until the viscosity is 10mPa•s, the tail length is the smallest and roundness is the biggest, the drop state is the best , when viscosity is bigger than 10mPa•s, the tail length will become bigger and roundness smaller.
The Research on Ink Adhesion of Vacuum Aluminized Paper
Authors: Wang Qin Wen , Fu Shi Yu , Chen Gang
Published: October 2012

In this paper we evaluated some surface characteristics of the Vacuum Aluminized Paper (VAP) to explore the ink adhesion on it. It is shown that this performance is quite unsatisfying due to the high gloss of the VAP which results in an even weaker surface energy than the surface tension of ink. The optimal drying time for the inked VAP under UV light with 125W of power is approximately 4.5 minutes, converts to the practical production, the printing speed of the VAP should be near to 7128 sheet/hour so as to fully solidify the UV ink thus acquires the optimal adhesion of ink.
The Study of the Affect Factors on the Soaping Fastness Resistance of Inkjet Ink
Authors: Yan Ji Fang , Huang Bei Qing , Wei Xian Fu
Published: October 2012

This paper is to study factors that affect soaping color fastness of inkjet printing ink. Considering ink as a constant, discuss the affect of curing conditions on soaping fastness by altering curing temperature and curing time. Considering curing condition as a constant, study the affect of other factors on soaping fastness of ink, like particle size, the binder content and varieties of binder. The results show that: the soaping fastness is better when the curing temperature is 180°Cand curing time is 3minites; The smaller the particle size of ink is, the higher the soaping fastness is; the soaping fastness is well when the binder content of ink accounts for 20% of the total. The water-based polyacrylate and water-based polyurethane have the same effects on soaping fastness.
Study of Cushioned Package Assessment via Multilevel Grey Evaluation Method
Authors: Gong Gui Fen , Yin Ke , Lan Ming
Published: October 2012

Six steps for cushioned package development based on the fragility theory are limited in the packaging cost and environmental protection. The author considered synthetically various cushioned packaging design relevant factors and built an assessment model of cushioned package based on multilevel grey evaluation method. By using this model, the author quantized the assessment process, and made it easier to be manipulated. The results of the comprehensive evaluation will be objective and scientific. The model can be widely used in cushioned package scheme optimization.
Based on Median Pyramid Transform of the Color Image Inverse Halftoning
Authors: Zhong Yun Fei , Fu Lu Jing , Zhou Tao
Published: October 2012

In order to eliminate the halftone noise and preserve the fine edge structure features of the color printing image, a method of color printing scanned image inverse halftoning based on median pyramid transform is proposed. Firstly the scanned images were decomposed by the transform in one scale. Then the noise distribution characteristics with approximations image and details image were analyzed and median filter was applied to denoise for details image. Then an inverse halftoning image was reconstructed from the cleaned details image and approximations image. Experimental results demonstrate that algorithm has better noise separate ability and has application value to color printing screening image restoration.
Printing Quality Evaluation of Inkjet Light-Box Cloth
Authors: Yin Xing , Hao Xiao Xiu , Sun Cheng
Published: October 2012

Ink-jet light-box cloth has been widely used in municipal engineering, supermarket, exhibition, hotel and other places, and played an indispensable role of advertising and decoration. There have been no unified parameters and standards for printing quality evaluation of ink-jet light-box cloth. To solve this problem, a group of researches were carried out according to its printability, which selected light-box cloth printed by inkjet. The parameters such as solid density, dot gain, relative contrast of the light-box cloth were tested and analyzed. Based on the results, the printing quality evaluation parameters were put forward. The purpose was to provide reference data for quality evaluation in light-box cloth printing industry.
Total Ink Amount Limit of Digital Proofing Based on EFI Colorproof System
Authors: Feng Pei Yong , Du Chun Yan , Lu Chen , Zhang Shan Shan
Published: October 2012

Total ink amount were used as study object in digital proofing workflow, total ink amount limit was adjusted according to the basic linearization of digital printing press, relation of color difference and color density and total ink of digital sample were analyzed based on EFI Color proof system, principle of total ink amount limit are obtain to provide theoretical basis for setting total ink amount and software development.
Cushioning Package Design for Notebook Computer with Corrugated Cardboard
Authors: Xing Yue Qing , Li Guo Zhi , Wei Ning
Published: October 2012

In this paper, a method is proposed for the cushioning package design of notebook computers with total corrugated cardboard through the market survey currently. A way of the evaluation for cushion package design for notebook computers is mentioned as simulation technology. A simple simulation model of the cushioning package of notebook computers has been made drop analysis and stress analysis by use of simulation software ANSYS. It has verified the feasibility and practicality of the method of whole corrugated cardboard cushioning package design. It has pointed out the direction of the development of the cushioning package design for notebook computers.
FEA Forming Simulation of Thickness Nonliner Blanks
Authors: Du Ji Tao
Published: October 2012

Thickness Nonliner Blank (TNLB) is forming by flexible rolling system and is superior to Tailor Rolled Blank（TRB）,the thickness of TNLB belongs to nonperiodic, it can be used to make automobile panels for reducing material and lower light-weight. The rolling process model of TNLB was presented and rolling simulation model of TNLB was built by Deform，the better match for the rolling speed and roll vertical speed is the key to get the target curve, the comparison between simulation curve and target profile curve was discussed the influence of rolling by different parameters such angular velocity and vertical velocity aimming at decreased Zone. the factors of each sections during rolling were analyzed. This research results show that these will put forward references for TNLB rolling and widen the connotations of TRB.
Surgical Scheduling Based on Hybrid Flow-Shop Scheduling
Authors: Huang Guo Xun , Xiang Wei , Li Chong , Zheng Qian , Zhou Shan , Shen Bing Qian , Chen Sai Feng
Published: October 2012

The efficient surgical scheduling of the operating theatre plays a significant role in hospital’s income and cost. Currently surgical scheduling only considered the surgery process in operating room and ignored other stages which should not be left out in real situations. The surgical scheduling problem is regarded as the hybrid flow-shop scheduling problem in this study. Each elective surgery which need local anesthesia has to go through a two-stage surgery procedure. Beds and operating rooms are represented as parallel machines. A mathematical model for such surgical scheduling problem is proposed and solved by LINGO. A case study with its optimal solution is also presented to verify the model.
Measurement of Manufacturing System Complexity Based on Key Resources
Authors: Ma Xiang Bo , Li Guo Fu , Liu Lan Lan , Liu Yi Hua
Published: October 2012

In the previous complexity measurement models of manufacturing system (MS), all the resources in enterprise were taken into account, so the result is that the models required large amount of information, which makes the model difficult to expand in practice. As the manufacturing system efficiency is determined by key resources. Only improving the key resources production efficiency can the MS efficiency be improved. So the manufacturing system complexity has to been measured based on the key resources firstly. The Optimized Production Technology is applied to the complexity measurement of MS and a new complexity measurement was proposed. With the information entropy, a static complexity measurement model and a dynamic model are built based on key resources. A case was used to verify the feasibility of the developed model. The advantages and shortcomings of the manufacturing system's complexity measurement were deduced based on key resources at last.
Simulation of Near Infrared Spectroscopy for Laser Induced Interstitial Thermotherapy on Tumors
Authors: Zhang Hua , Hua Guo Ran , Qian Ai Ping
Published: October 2012

Laser induced interstitial thermotherapy (LITT) is a useful method for the treatment of tumors. In order to control the treatment of LITT, a new local control technique has been put forward. A functional near infrared spectroscopy (fNIRS) system was used. The temperature of biological tissue is regarded as the most important indicator for treatment of LITT. So, the propagations of near infrared laser in normal tumors and liver tumors were simulated with Monte Carlo method. Based on the distribution of light in normal tumors and liver tumors, the temperature distribution inside tissue under laser irradiation has been retrieved. Furthermore, the influences of laser power and action time on the temperature field were studied. The results show that the normal tumors and liver tumors have different light absorption with laser beam. The difference of temperature distribution in tissues with the same laser power is useful to apply in control the treatment of laser-induced interstitial thermotherapy for liver tumors. It is confirmed that the fNIRS can be a useful local control technology for LITT.
Study on the Application of an Electronic Training System of Marketing Management
Authors: Xiong Ya Zhou
Published: October 2012

In the market-management electronic training system, the students act as various roles to be familiar with the business process and learn marketing knowledge. The paper first introduces four function modules, and then expounds the operation process and the decision tasks through the figures, finally should make important strategic planning and business objectives, analyze and discuss carefully every job, use various kinds of knowledge comprehensively to operate on the companies and get the better performance.
Experimental Investigation of Polishing Character of Rotating Magnetic Polishing Fluids
Authors: Wang Zheng Cai , Lu Zhang Xian , Chen Shan Fei , Li Guo Fu
Published: October 2012

In the face of the mechanical part of shape complex, the surface is difficult to be finished by the automatic and effective methods, but the magnetic fluid mixed with the polishing and cutting particles has motion characteristics in magnetic field. This paper introduces a kind of polishing technology which can rotate magnetic polishing fluid in the influence of magnetic field. The viscosity and hardness of magnetic polishing fluid change under the magnetic field, and the magnetic polishing fluid rotates in the fluence of the magnetic stirring apparatus, when machining magnetic in the liquid in polishing, and fixed in the liquid in proper position. When we select the best position in the magnetic polishing fluids and immerse the workpiece in the magnetic polishing fluids, the magnetic fluids rotate and move relatively to the workpiece. The friction between the magnetic fluid and the surface of workpiece has the finishing efficiency. The experiment is carried out to study the relation of the roughness and polishing and location on the home-made polishing laboratory platform in detail. The experimental results show that the rotating magnetic polishing liquid can be used for polishing the workpiece in super smooth processing, which is much better than polishing abrasive alone in reducing surface roughness. The study opens a new field for the application of the magnetic fluid. However, the direction of the field, the speed of the movement, and the polishing time of the process parameters still needs further research.
Overview of Pneumatic Pump Reversing Mechanism
Authors: You Yong Sheng , Ma Zhi Yong , Lv Yu Li , Yang Zhi Fei , Zhang Xu
Published: October 2012

Pneumatic pump use compressed gas as power source, outputting straight reciprocating motion. It is widely applied in high pressure airless spray machine. Reversing mechanism is the core component of pneumatic pump. According to the different ways of distributing and reversing gas, pneumatic pump reversing mechanism can be divided into two major categories of pneumatic control type and mechanical type. We summarize the history of the development and the present situation of research and compare various reversing mechanisms in the realization principle, design of structure, manufacturing, vibration noise and cost of production etc. Then we put forward the direction of its research and development, providing theoretical basis for the subsequent development of high quality and efficient pneumatic pump.
Electrodeposited Nanocrystalline Nickel Parts
Authors: Chen Jin Song , Yang Jian Ming
Published: October 2012

The principles of jet electrodeposition orientated by rapid prototyping were introduced , The nanocrystalline nickel parts with simple shape were fabricated using jet electrodeposition oriented by rapid prototyping. The microstructure and phase transformation of nanocrystalline nickel were observed under the scanning microscope and X-ray diffraction instrument . The results show that the successful fabrication of metallic parts demonstrates the potential of the jet electrodeposition process for prototyping technology . The jet electrodeposition can greatly enhance the limited current density, fine crystalline particles and improve deposition quality. The nickel parts prepared by jet electrodeposition own a fine-grained structure( average grain size 25.6nm) with a smooth surface and high dimensional accuracy under the optimum processing parameters..The dimensional accuracy as well as the surface quality of metallic parts and tools manufactured using jet electrodeposition techniques still lag far behind those of conventionally machined parts.
The Blemish Identify System of Friction Welding Based on GA-BP Model
Authors: Yin Xin , Wen Zhen Hua , Liu Yuan Peng
Published: October 2012

Currently the BP networks which used in friction welding defect recognition existents the problem of slow convergence and easy to fall into local optimum. This text will introduce the germ arithmetic into the BP network to turn a beginning to start the power value, putting forward the improvement BP network of the blemish identify. Pass to verify the blemish signal of the some GH4169 heat metal alloys detected by a super voice C, which expresses that the method makes blemish qualitative analysis classification acquired higher accuracy, and it can lower artificial and subjective factor consumedly to the influence that the blemish identify.
Forming Limit Prediction of BCC Materials under Non-Proportional Strain-Path by Using Crystal Plasticity
Authors: Yang Mei , Zhang Xiao Yan , Wang Hao
Published: October 2012

In this paper, the forming limit of a body-centered cubic (BCC) sheet metal under non-proportional strain-path is investigated by using the Marciniak and Kuczynski approach integrated with a rate-dependent crystal plasticity model. The prediction model has been proved to be effective in predicting Forming Limit Diagram (FLD) of anisotropic sheet metal with FCC type of slip systems[1]. The same model has been used to study the FLD under non-proportional strain-path of BCC slip systems numerically and experimentally. The agreement between the experiments and simulations is good. With crystal plasticity model well describing the crystal microstructure effect, our model can be used to predict the FLD of BCC sheet metal under complicated strain path in plastic forming process with good accuracy.
The Research on the Microstructure Evolution Law of Cross Wedge Rolling Asymmetric Shaft-Parts Based on Parity Wedge
Authors: Gong Wen Wei , Shu Xue Dao , Peng Wen Fei , Sun Bao Shou
Published: October 2012

Microstructure evolution is an effective means to improve the mechanical properties of products, shaft parts formed by cross wedge rolling is not only the shape of the formed parts, but more importantly it improves the comprehensive mechanical properties of the products by deformation. Therefore, the paper sets up the coupled rigid-plastic finite element model with deformation-heat transfer-microstructure by using nonlinear finite element method, and this model is adopted to make simulation calculation for the forming techniques of asymmetric shaft parts of cross wedge rolling based on parity wedge, specifically analyzes the rule of dynamic recrystallization and grain size distribution in the asymmetric rolled parts. The results show that the grain in the wedging place of asymmetric shaft parts of cross wedge rolling based on parity wedge can be obviously refined, and the research results of this paper may provide theoretical foundation for further improving the quality and mechanical properties of asymmetric shafts parts of cross wedge rolling.
Classification of Plume Image and Analysis of Welding Stability during High Power Disc Laser Welding
Authors: Wen Qian , Gao Xiang Dong
Published: October 2012

Plume images which captured during the high power disc laser welding contain lots of information that related to the welding quality and stability. The classification of plume images is an important foundation for online monitoring during welding process. Stainless steel 304 was taken as the experiment object for the high power disc laser welding experiments. A high-speed camera was used to capture the ultraviolet band and visible light band plume images in the laser welding process. Image processing techniques were applied to get the characteristic parameters such as the ratio of the absolute value of coordinate difference between the centriod of plume and the welding point, the number of spatter, the average gray level and entropy of a spatter image, and formed a four dimension vector. Then K-nearest neighbor classification method was used to separate the poor welding quality images out from good ones. Welding experimental results confirmed that using K- nearest neighbor classification method to classify the four dimension vector samples which formed by the ratio of absolute value of coordinate difference between the centriod of plume and welding point, number of spatters, average gray level and entropy could obtain a recognition rate that close to the actual welding results.
Fuzzy-PID Control of Electronic Controlled Diesel Engine
Authors: Hu Li Yong , Feng Guo Sheng , Jia Su Mei , Zhang Wei
Published: October 2012

In order to satisfy the demand of increasingly stringent emission regulations and enhance fuel economy and increase dynamic performance of vehicle diesel engine, the working parameters of electronic controlled diesel engine should be changed properly. An electromagnetic actuator controlled system was designed based on DSP56F807. The control strategy of fuzzy-PID and fuzzy control model for electro-magnetic actuator was established. The control effect of fuzzy-PID for electro-magnetic actuator and diesel engine was validated through experiment. Experimental results showed that good static and dynamic control effect can be obtained using fuzzy-PID control method.
A Novel Method of Bonnet Polishing for Aspheric Surface
Authors: Sha Shu Jing , Wang Long Shan , Zheng Di , Han Wei
Published: October 2012

On the basis of compliant polishing device for aspheric, a new method of bonnet polishing on magneto-rheological of torque servo driver has been proposed. It has introduced the bonnet polishing composition and polishing principle. Polishing tool using the flexible bonnet, it can better adapt to the different curvature change of parts, and the stable polishing force can be get through MRT. Combining the constant torque device on MRF with CNC machine, this embodies high rigidity, higher precision of NC machine and reflects the MRT with adjustable, controllable, rapid response characteristics. The formulae of stress and relative velocity of polishing are deduced, and the material removal rate model has been set up. The experimental results show that this new method of bonnet polishing can provide stable polishing force, and the model is correct, has good prediction ability.
The Establishment and Analysis of the Laptop Bag Semantic Space Based on the Semantic Differential Method
Authors: Han Lu , Che Jian Ming , Wan Xin Ru
Published: October 2012

The user's preferences and views make a profound impaction on the public acceptance of the product. Both can be expressed through the study of product semantic. This article describes the application of semantic differential method to establishment and analysis the laptop bag products semantic space. Through the collection of 60 subjects’ evaluation of 8 laptop bags, the semantic universe is reduced to a collection of 25 adjectives semantic by using of semantic differential method. Semantic axis are defined the main component factor. The influence of subjects’ number in the semantic evaluation results is also studied. The establishment of the semantic space is the first step for introducing emotional performance in products design and interaction, which would increase the success probability of products. This statistical measurement help make decisions in terms of design expression.
Analysis of the Material Removal Rate of Nanosecond Laser Ablation of Aluminium Using a Parallel Hatching Mode
Authors: Campanelli Sabina L. , Contuzzi Nicola , Casalino Giuseppe , Ludovico Antonio D.
Published: October 2012

Laser ablation is a new, very flexible process for micro-fabrication of micro-moulds and other micro-system devices. This process is suitable for machining difficult-to-machine materials, like ceramics, dielectrics, carbide and hardened steel with excellent productivity and surface. The paper presents the investigation on the material removal rate of aluminium 5754 using a nanosecond Nd:YAG laser with a wavelength of 1064 nm.
Study on Influencing Factors of Tooth Forming Quality for Gear Shaft with Cross Wedge Rolling
Authors: Jin Mei Zhen , Li Jun Hao , Ying Fu Qiang
Published: October 2012

The feature of the gear shaft with Cross wedge rolling technology is high efficiency, low material loss and higher strength of the gear shaft forming. A research model of cross wedge rolling plastic forming adopting tri-dimensional thermal elastic-plastic finite element method is put forward. Forming mold divided into two parts as the wedge-shaped molds and tooth mold is designed. Depending on orthogonal test program, applying Deform-3D to numerical simulate for the gear shaft with cross wedge rolling, the influence of temperature, number of teeth, module and feet rate for gear shaft tooth forming quality is studied. The results are analyzed with the temperature of the workpiece, number of teeth, module and feet rate of the die movement during CWR and the best combination of produce conditions is reached.
Vibration Polishing Edge Preparation for Cemented Carbide Inserts
Authors: Wang Jiao , Wang Hao , Yu Ai Bing
Published: October 2012

Micro-cracks on cutting edge will cause early breakages on cutting tools, accelerate tool wear and reduce cemented carbide tool life. Edge preparation can improve the cutting edge quality. Vibration polishing experiments were carried out for cemented carbide inserts edge preparation. Inserts and fixtures were put into the vibration polishing equipment which forced abrasive particles to collide and polish inserts. Edge preparation for fixed type insert and free type insert were compared with three sizes of abrasive particles. And the polishing time was changed for each testing cases. Experiments were carried out by altering polishing time, abrasive particle size and tool clamping way to determine the optimum technology of vibration polishing edge preparation. The experimental results showed that edge breakage numbers of insert significantly reduced. Smooth and round cutting edges were observed by optical microscope after edge preparation. Edge preparation experiments prove that edge preparation can change the cutting edge geometry and improve the cutting tool quality.
Injection Molding Process Parameter Optimization of Food Tray for Warpage Minimization Based on Moldflow
Authors: He Hua Bo , Zhu Xue Wen
Published: October 2012

By the combination of orthogonal experiments and moldflow simulation analysis, the warpage of a food tray is analyzed under the combined effects of multi-molding process parameters. By this method, it can gain the experiment data which can basically reflect the overall situation using fewer number of simulation analysis. In addition, the effects degree of different molding process parameters for warpage are researched, and the optimized parameter combination is obtained. It can avoid the one-sidedness of individual analysis of the various factors and solve the unreasonable appearance of process parameter settings. With the help of results, it can fasten the mold developing schedule, thus shorten the cycle of product development, and improve the quality of products and the competitive ability of enterprise.
Lathing Processing Dosage Trends Identifying Based on Current Signal
Authors: Fang Teng Fei , Li Guo Fu , He Ming Teng , Ma Xiang Bo
Published: October 2012

It is extremely meaningful to identify the processing dosage which directly influence the processing time, quality and other processing factors. In order to obtain the trend of lathing processing dosage, ordinary horizontal lathe was researched using the power signal frequency spectrum method, through the frequency distribution and the differences of amplitude, the trends of lathing processing dosage was identified. The collected current signal was turned into power signal first, when the cut depth is large, it is able to identify the trends of processing dosage through the fluctuations of the power signal, but when the cutting depth is small, compared to the power signal of idling state, there is not obvious difference to distinguish them. In this case, the frequency distribution and the differences of amplitude of the power signal were introduced.
Nonlinear Dynamic Analysis of Helical Gear Considering Meshing Impact
Authors: Wang Feng , Fang Zong De , Li Sheng Jin
Published: October 2012

Comprehensive meshing stiffness and single tooth meshing stiffness are calculated by tooth contact analysis and load tooth contact analysis program. The corner meshing impact model is proposed. Nonlinear dynamic model of helical gear transmission system is established in this paper considering time-varying meshing stiffness excitation, transmission error excitation, corner meshing impact excitation, and the backlash excitation. Take the ship’s helical gear transmission system as an example, the mesh impact force is derived and the primary factors that produce noises are discussed. The effects which the mesh impact brings to vibration characteristics of the gear dynamic system are concluded. Meshing impact has an inevitable effect on the vibration of the dynamic system. Impact excitation costs 8.5% in maximum of vibration acceleration response, 31% in maximum of instantaneous acceleration, and 4.9% in maximum of spectral component amplitude.
State Analysis of Mine Hoist
Authors: Zhang Yong Sheng , Jia Yu Jing , Cheng Guang Zhen
Published: October 2012

The objective is to provide a method about equipment condition monitoring and fault diagnosis. The method could indicate equipment operating parameters, working conditions and specific status. We used CDMS system monitoring mine hoist key parts of the vibration velocity, introduces the vibration sensor reasonable decorate, in the time domain analysis of speed amplitude values, in frequency domain speed spectrum analysis, according to the monitoring signal analysis processing results, give the diagnostic conclusions that the gear of second shaft have uniform force, and a little corrosion, peel and eccentric, puts forward that we should strengthen vibration monitoring about the second shaft of speed reducer, Observe reducer wear trend using the iron spectral analysis, Supervise lubricating oil quality, change oil when necessary.
Color Image Segmentation of Plume for Monitoring Disk Laser Welding Process
Authors: Wang Teng , Gao Xiang Dong
Published: October 2012

During deep penetration laser welding, changes in the metal vapor plume contain information about the stability of welding process. A high-speed camera was used to online monitor the welding process in order to detect the laser welding defects. A color segmentation clustering algorithm based on HSI color space was proposed for processing the recorded welding sequences. The effectiveness of algorithms based on different model is discussed, welding experimental results showed that the proposed algorithm could achieve better image segmentation, and it highlighted the edge of the metal vapor details in the image.
A Study of High Intensity Focusing Ultrasonic Transducer
Authors: Liu Li , Sun Jian
Published: October 2012

High intensity focused ultrasound (HIFU) is the fourth brand-new and efficient means to cure tumour acknowledged by the medical field. Study of ultrasonic transducer is a core part of HIFU technique, In order to ensure reliability and safety of treatment, it is a key for HIFU technique to realize accurate focusing of ultrasonic energy. In the thesis, ultrasonic focusing method, studies of current situations of cell and multiplex array focusing transducers and their existing problems are illustrated based on analyzing challenges faced by HIFU treatment at present. This study suggested that phased array was theoretically easy for realizing accurate control of computer， however, unbeneficial factors and engineering technical problems still exist; How to promote intensity of the focal spot of cell array focusing transducer, enlarge scope of the focal area and improve control way of the focal spot was a bottleneck problem for publicizing and applying cell array focusing transducer and one of urgent research topics for ensuring curative effect of HIFU and avoiding heat damages.
A Failure Criterion of Friction Pair under Boundary Lubrication
Authors: Yan Yu Tao , Yang Mai , Sun Zhi Li , Liu Li Fang
Published: October 2012

The formation and lubrication mechanism of boundary lubricating film were discussed. The boundary lubricating film includes adsorption film and chemical reaction film, and has respective temperature operating range. The adsorption film adsorbed in metal surface by Van-der Wads, and the parenchyma is the external friction between adsorption molecule layers. The chemical reaction film is made by the reaction between metal and extreme pressure additive in base oil, and the anti-wear capability is realized by the low-melting point eutectic alloy. The temperature is regarded as a judge criterion for failure of boundary lubrication. The failure model for boundary lubricating film is established. According to the failure model, the failure criterion proposed is effective by analysis of the spiral bevel gear using the finite element method. These results provide a basis for the application of boundary lubrication.