bluuebunny/crossref_metadata_2025 huggingface dataset:
Morphology, Nature and Formation Mechanism of Packet Plate Martensite in Medium and High Carbon Steels
Authors: Ma Yue Xin , Liu Yue Jun , Wang Long , Zeng De Chang , Tan Yu Hua
Published: October 2011

The microstructures of 11 kinds of commercial steels quenched from high temperature were deeply studied by optical microscope and canning election microscope. It was proved that packet martensite in medium and high carbon steels is not lath martensite, but rather packet plate martensite. Through the analysis of crystallography，it was found that four change rules of crystal orientation may arise during the process of martensite transformation. Two inner interfaces spontaneously formed were only discovered in martensite transformation process: small-angel boundary (misorientation angle is 0 ~ 10º) and twin boundary (misorientation angle is 70º32’). The former mainly appeared in low carbon martensite, and the latter principally formed in medium and high carbon martensite. The twin boundary packet mechanism in medium and high carbon steels has made in detail in this paper.
The Principle of the Electro-Optic System in Passive Synthetic Aperture Lmging
Authors: Yan Yi Fei , Bai Ming , Xie Chen Guang , Miao Jun Gang
Published: October 2011

As the synthetic aperture has been widely used in remote sensing and imaging system. Various methods have been used to enhance the imgaing speed of the system. Optical method has been proved to have the high imaging speed in processing microwave signals. The received signal can be modulated in optical carrier by the electro-optic amplitude modulation. The optical signal is processed by relevant optical instruments. The article compares the new electro-optic imaging system with the original system. The principle of the new system has been proved to be similar with the original system. The structure of the new system has been verified to have the possibility to realize real-time imaging. The key point of the new system has been analysed and the main challenge in the new system has been checked in the article.
The Research on Tax Risk Monitoring and early Warning System in Xi'an Local Taxation Bureau
Authors: Ma Xu Bu , Guo Ju E , Ma Xu Tao , Wang Zhan Hao
Published: October 2011

By combining the domestic and overseas research experience in tax risk management, based on all personnel and whole flow thought, this paper divides tax risk into tax sources risk, enforcement risk, administrative risk and independent risk according to objects and processes of occurrence, and designs tax risks early warning system to dynamically monitor, early warn four types tax risk and constantly provide various risks analysis reports. This paper provides a information means for the post personnel at various levels of Xi’an Local Taxation Bureau to prevent tax risk.
Multifactor Stress Life Model of Polyimide Film Used in Inverter-Fed Traction Motors
Authors: Cui Yi , Wu Guang Ning , Luo Yang , Cao Kai Jiang
Published: October 2011

The inverter-fed traction motor is one of the key components in the locomotive. However, the motor insulation failures have repeatedly occurred in premature. The failure mechanism for insulation under continuous impulses is different from that under sine waves. The single stress approach in design stage and also in ageing studies offers relative simplicity, but it is inapplicable to real life operating conditions which mostly are of multi-stress type. In this paper, a novel test apparatus of insulation failure time was designed for accelerating aging test. Meanwhile, electrical breakdown experiments on magnet wire insulating polyimide film (FCR 100) used in the inter-turn insulation of JD117 inverter-fed motor was conducted. The effects of multi-stress including impulse amplitude-temperature and impulse frequency-temperature were investigated respectively. The test results under different conditions were analyzed based on statistic analysis of Weibull distribution. Finally, insulation life models under combined thermal and electrical stresses were proposed using the multi-stress approach. A fitted formula for ageing life was presented which had two independent variables of voltage and temperature. The generality of the model lies in the fact that it can be used for designing of insulation system of all electrical components containing solid insulating materials surrounded by gas. Since the model is based on the probability of insulation deterioration under the action of the stresses applied, that gives us the opportunity to calculate the life time of insulation system for given system of stresses, the materials selected and the requested probability of failureless system operation.
Abnormal Behavior Recognition Based on Multi-Information Decision in Power Generation
Authors: Wei Zhen Hua , Li Xue Sen , Song Shi Bo , Zhang Le
Published: October 2011

So far most research of human behavior recognition focus on simple individual behavior, such as wave, crouch, jump and bend. This paper will focus on abnormal behavior with objects carrying in power generation. Such as using mobile communication device in main control room, taking helmet off during working and using umbrella in high place. In global environment, there are some almost fixed features for portable objects of workers, such as clothes. So we adopted edge detecting by color tracking to recognize object in worker. The sequence of 3D human behavior data would be expressed by geometric character of skeleton and its angle. Since specific time and space of behavior definition, it is of importance for recognition system using describing information in a comprehensive way. Take account of information complementary perspective, this paper introduced a method of making decision from multi-information by spatial pyramid and fisher score discretion for behavior recognition. And the method was proved to have advantages than some previous algorithms.
Description and Verification of Supply Chain Business Process Based on Pi-Calculus
Authors: Huang Yong Tao , Wang Gang , Ren Bing Yin , Zhang Hao Yun
Published: October 2011

To formally verify the correctness of supply chain business process model (SCBPM), a model validation scheme was proposed based on Pi-calculus. In this scheme, the interaction structure of SCBPM was described by UML sequence diagram. The corresponding rules were defined between UML sequence diagram and Pi-calculus. Based on these rules, the formal process model was established. Its validity was verified by MWB, a model checker of pi-calculus. The result shows the scheme proposed could effectively verify the consistency of SCBPM and customer requirements.
Micro Plasma Arc Welding of AM 350 Precipitation Hardening Alloys
Authors: Tseng Kuang Hung , Chen Yung Chang , Chen Yung Chuan
Published: October 2011

Micro plasma arc welding (micro PAW) was carried out AM 350 precipitation hardening alloy to produce an edge-joint weld. The application of micro PAW technique was also demonstrated in the present work. The results indicated that the arc voltage increased with increasing quantity of added hydrogen in the argon atmosphere. The collimated shape of low current plasma arc was mainly responsible for the low sensitivity of weld shape to variations in arc length. The edge welded bellows of AM 350 alloys have been successfully welded using the present micro PAW technique.
2-D Magnetic Field Analysis of Air Cylinder with MR Sensor
Authors: Jiang Dan , Yang Ping , Jiang Kun
Published: October 2011

As a type of solid state switch, MR (magnetoresistive) sensor detects the air cylinder piston’s position in pneumatic control system. The construction and working principle of the air cylinder with MR sensor are introduced. Using 2-D magnetic field finite element analysis (FEA) method, the magnetic field distribution of air cylinder with piston motion is analyzed. Simulation results are given. The magnetic flux density characteristics are compared between piston wear or not.
Imposing Essential Boundary Conditions in Isogeometric Analysis with Nitsche’s Method
Authors: Chen Tao , Mo Rong , Gong Zhong Wei
Published: October 2011

Isogeometric Analysis combines the NURBS technology and finite element approaches into a unified framework. Regrettably, the NURBS basis functions don’t interpolate at the control points, which lead to the difficulty for imposing the essential boundary conditions. A new approach inspired by Nitsche’s notion was proposed in order to remedy this issue. The essential boundary constraints are enforced by the consistent penalty terms. It has some notable advantages than the other methods, such as (i) the symmetric and positive definite bilinear formulation when the stiffness matrix is symmetric and the stabilization parameter is large enough; (ii) the well-conditioning coefficient matrix of the linear system. Finally, the numerical experiment was performed to verify the optimal rate of convergence of the present method.
Study of Seasonal Storage in Ground-Source Heat Pump with Solar Collector
Authors: Wang Fang , Niu Lian Jing , Liu Zhi Long , Zheng Mao Yu
Published: October 2011

Aimed to ground source heat pump’s low coefficient of performance in severe cold climate areas, solar assisted GSHP system with seasonal soil heat storage has been advanced. Simulation analysis was done for the underground heat exchanger using finite element method. Changing types of soil and material of U-tube, suitable kind of soil and material of U-tube were found for GSHP system. The analysis result shows that seasonal soil storage can solve the problem of large heat load in heating period and little cold load in cooling period for severe cold areas. It provides theoretical basis for residential use.
Study on Mountainous Shallow-Buried Coal Seam Mining Working Face Strata Behaviors and Overlying Strata Movement Features
Authors: Liu Guo Lei , Fan Ke Gong , Xiao Tong Qiang
Published: October 2011

Through testing the mountainous shallow-buried coal seam mining working face strata behaviors in Faer mine field, it got the strata behaviors: it was of large roof pressure, high rate of safety valve opening in hydraulic support, and even some supports crushed or took separation between top beams and tail beams. Traditional method of calculating supports’ resistance can not be applied to mountainous shallow-buried coal seam mining working face. With the discrete element simulation software UDEC it analyzed the strata movement feature, and got that the overlying strata took collapse and horizontal displacement after mountainous shallow-buried coal seam mined, and the strata movement feature was different between reverse slope mining and positive slope mining.
The Improvement about Performance Assessment of Local Taxation Bureau of a Area in Chengdu
Authors: Ren Wei Jin
Published: October 2011

This paper attempts to find out a performance evaluation method that is suitable to the entire workflow characteristics through the analysis of the Current Situation about Performance Assessment of grass-roots local tax departments with the theory of performance evaluation, which provides some suggestion for local tax authority to improve management and service level.
The Pneumatic Feeding System of Electrospinning Based on Numerical Simulation and System Identification
Authors: Wang Qiang Gao , Liu Da Li , Han Lin Nan , Liu Yuan Yuan , Hu Qing Xi
Published: October 2011

Electrospinning, which is a technology to make nano fiber, has quite high requirements of the speed of feeding. In order to solve the unstable phenomenon, salivation, and achieve the stability of quality, numerical simulation is used to compute the nozzle exit pressure and exit velocity, while recursive least squares is used to identify of the results of the simulation. At last, PID algorithm and recursive least squares methods are combined together to form a model for the feeding system controller. And the pneumatic device and pressure sensor are used to build electrospinning feeding system. Finally, experimental verification PEO solution is used to verify this method, no drooling electrospinning phenomenon happens
Using Multi-Function Constructed Wetland for Urban Stream Restoration
Authors: Wu Chun Yi , Fu Yu Tung , Yang Zong Han , Kao Chih Ming , Tu Yao Ting
Published: October 2011

In 2007, a 2.8-ha multi-function constructed wetland was successfully built in Pingtung County, Taiwan to improve the water quality of local stream and ecosystem of the surrounding environment. The mean inflow rate was approximately 1,350 m3/day. The major influents of the wetland come from the local drainage ditches and streams mainly containing returned water from upstream farmlands and secondary wastewater from hog farms located in the upper catchment of the wetland. Thus, the influents contain moderate to high concentrations of organics and nutrients. The mean measured hydraulic loading rate, hydraulic retention time, water depth, and total volume of wetland system were 0.1 m/day, 5.5 days, 0.7 m, and 7,800 m3, respectively. In this study, water, sediment, and plant samples were collected and analyzed quarterly for each wetland basin during the two-year investigation period. Results show that more than 77% of total coliforms (TC), 78% of biochemical oxygen demand (BOD), 88% of total nitrogen (TN), and 96% of ammonia nitrogen were removed via the constructed wetland system. Thus, the wetland system has a significant effect on water quality improvement and is able to remove most of the pollutants from the local stream through natural attenuation mechanisms. Except for stream water quality improvement and rehabilitating the natural ecosystem, this wetland also offers more water assessable eco-ponds and eco-gardens for public. This constructed wetland has become one of the most successful multi-function constructed wetlands in Taiwan.
Development and Application of ZY6400/25/53 Two-Leg High Cutting Hydraulic Shield Supports
Authors: Ma Li Qiang , Zhang Dong Sheng , Jia Jin Long , Li Yong Sheng
Published: October 2011

We have independent developed ZY6400/25/53 two-leg high cutting hydraulic shield supports firstly, which width was 1.5 m could adapt to much complicated geological conditions, reduced the hydraulic support and accessories costs, and solved the problems of supports’ stability efficiently. Industrial tests showed that the supports application were successful and effective. We realize the high efficient production, the average yield reach to the level of 10000 t/d, if mine system have working conditions, the coalface have the ability produce 5Mt coal annually. This hydraulic support greatly improve the coal resources mining rate, broaden the application range of the high cutting fully mechanized mining technology in China, and led the upgrade of mechanized equipment.
Evaluation of Equivalent Circuit Parameters for Permanent Magnet Linear Synchronous Motor with Low-Speed
Authors: Cheng Zhi Ping , Jiao Liu Cheng , Chen Yong
Published: October 2011

Based on the linear theory of permanent magnet linear synchronous motor with low-speed（PMLSMLS）. Equivalent circuit parameters are derived. This equivalent circuit is in the same form for either salient-pole machine or non-salient pole machine without trouble of d-q axis, which can be used to analyze and evaluate the performance of PMLSMLS conveniently.
Prediction and Analysis for Chinese Machinery Manufacturing System Based on the ARMA
Authors: Hu Lei
Published: October 2011

The mechanical manufacturing is the most important index to measure national economic hard power, this study forecast machinery manufacturing output of china in 2011 by combination time series model ARMA. Meanwhile its influential factors were analyzed through creating structure model, the results of analysis can not only help us to find the best method for transformation and upgrade of machinery manufacturing, but also avoid risk of financial crisis in the present adverse circumstances that RMB was appreciated constantly in our country.
Research on Adhesion and Non-Adhesion Braking Characteristics for High-Speed Train
Authors: Wang Hai Jun , Zeng Jing , Luo Guang Bing , Liu Zhuan Hua
Published: October 2011

The emergency braking deceleration and braking distance of high-speed train were studied under the conditions of adhesion brake on dry and humid rail surfaces, and adhesion and non-adhesion composite brake on humid rail surface. The average emergency braking deceleration was calculated by the area-method. The results show that the braking performance is affected significantly by the wheel/rail adhesion state and the braking performance of high-speed train can be improved by applying the adhesion and non-adhesion composite brake in the state of humid rail surface.
Research on Processing of Large-Size Spiral Bevel Gear CNC Machine Tools
Authors: Yang Lin , Zhang Peng , Wang Yuan Tao
Published: October 2011

In this paper, a new type of large-size spiral bevel gear machine is used as a model to study the structural characteristics of spiral bevel gears. Geometric and mathematical models of the machine tool are established. According to the processing principle of spiral bevel gear by forming method with disc cutter, the position and angle of cutter relative to the workpiece are researched.The tool motion is converted to the machine tool coordinate system by coordinate transformation, then the tool trajectory can be obtained to provide the basis for the processing of spiral bevel gears.
Research on Temperature Field of Hydrostatic Thrust Bearing with Annular Cavity Multi-Pad
Authors: Yu Xiao Dong , Meng Xiu Li , Wu Bo , Gao Chun Li , Qiu Zhi Xin , Zhang Yan Qin , Jiang Hui , Lou Xiao Zhong , Shi Zhi Min
Published: October 2011

A simulation research concerning temperature field of hydrostatic thrust bearing having annular cavities multi-pad was described in order to solve the thermal deformation of the hydrostatic thrust bearing with annular cavity multi-pad in the heavy CNC equipment. The Finite Volume Method of CFX has been used to compute three-dimensional temperature field of gap fluid between the rotation worktable and base. This study theoretically analyzes the influence of rotating velocity on the bearing temperature performance according to computational fluid dynamics and lubricating theory. It has revealed its temperature distribution law. The simulation results indicate that an improved characteristic will be affected by rotating velocity easily, and oil cavity temperature increases by gradually with rotating velocity enhancing. Through this method, the safety of a hydrostatic thrust bearing having annular cavities multi-pad can be forecasted, and the optimal design of such products can be achieved, so it can provide reasonable data for design, lubrication, experience and thermal deformation computation for hydrostatic thrust bearing in the heavy CNC equipment.
Stacking Fault Substructure of Martensite in Steel
Authors: Ji Yun Ping , Liu Zong Chang , Ren Hui Ping
Published: October 2011

The stacking fault substructure was observed in the quenched martensite of 35CrMo, 2Cr13 and W6Mo5Cr4V2 steels by JEM-2100 transmission electron microscope. It is significant theoretically to discovery the stacking fault substructure and then to study its formation mechanism. The results show that the stacking faults in the martensite of steels are superfine with a few nanometers spacings, which are often concomitant with the high-density dislocations. It is considered that the stacking fault results from the crystal lattice misarrangement during the crystal lattice reconstruction from austenite to martensite in steels. The shear mechanism cannot explain the formation of the stacking fault.
Numerical Verification of Constitutive Relationship for Mechanic Behavior of Shape Memory Polymer
Authors: Zheng Bai Lin , Huang Xin Ming , Han Cong Cong , Yang Qing
Published: October 2011

Based on the viscoelastic theory, the shape memory behavior of SMP materials is analyzed theoretically with the aid of numerical method of finite element in this paper. The stress-strain relationship depended on temperature and time of SMP materials is described by the thermal viscoelastic integral constitutive model. A numerical simulation is carried out to compare with the experiment conducted by Tobushi (2001[6], 2005[9]), and the simulation results correspond well with the experiment, thus can provide reference to experimental studies
The Application of Knowledge Representation on the Design of Loading Device of Garbage Truck
Authors: Wang Bin , Tao Jie , Wu Hong Pan
Published: October 2011

To meet the requirement of mass customization of garbage truck, knowledge engineering plays an important part in modern garbage truck design. As the basis of knowledge engineering application, the principles of common knowledge representation methods were analyzed in detail, and the application places of different knowledge representation methods were presented in the paper. Finally, examples of production knowledge representation, sate space representation, object-oriented knowledge representation, and semantic network-based knowledge representation were introduced independently to show the feasibility of applying these methods on the design of loading device of garbage truck.
Virtual Design and Kinematic Simulation for Picking System of Blueberry Picking Machine
Authors: He Pei Zhuang , Zhu Hai , Li Zhi Peng , Wang Hai Bin
Published: October 2011

In order to determine the key parameters of blueberry picking machine, the three-dimensional solid modeling of Blueberry Picking System is researched based on the Pro/ Engineer of CAD software. The mechanical dynamic software MSC.ADAMS is used to carry out dynamic simulation for the model of Blueberry Picking System. The key parameters of the system are chosen through the force of the branches. The working parameters of the picking system were optimize by simulating the parameter in the limited range step by step, which provides technical evidence for the achievement of physical mechanism.
Research on Nonlinear Error Analysis and Overproof Processing Method in Five-Axis NC Machining with Dual Turntable
Authors: Li Yong Qiao , Chen Yong Xiang , Chen Qiang
Published: October 2011

As for the widely used five-axis NC machine with dual turntable, this paper constructs the kinematics mathematic model and finishes solving the machine kinematics formula on the basis of workpiece coordinates system. On the basis of detailed discussion on the effective method for calculating nonlinear error, this paper provides the analysis and calculation and processing procedure for overproof. By processing cutter location (CL) data, the validity and feasibility of the method is tested correct by simulation. Accordingly, this paper provides an inerrable basis for the overproof processing method for design of the general postprocessing system.
Research of a Kind of Wind-Solar Hybrid Power Experiment System
Authors: Xie Yuan , Jiao Bin
Published: October 2011

A kind of wind-solar hybrid experiment system is designed for teaching and research. The experiment system is consisted of wind energy subsystem, solar energy subsystem and energy storage subsystem. Both wind turbines and photovoltaic arrays can generate electrical power independently. The wind energy subsystem and solar energy subsystem have independent control modules. The whole experiment system connect grid with an inverter. And the control module manages the three parts to cooperation in the reasonable way.
A New Cost Allocation Approach on One Machine Sequencing Games
Authors: Zhou Yan Ping , Gu Xing Sheng
Published: October 2011

One machine sequencing situation is introduced and cooperative games theory is used to allocate cost savings when agents cooperate and gain some cost savings. One machine games is proved to be balanced and have a nonempty core. A new cost allocation, the proportion gain allocation approach, is proposed and proved to give a core allocation for one sequencing games. The results in examples show that the proportion gain allocation approach are fair and reasonable for one machine games.
A SMS-Based Real-Time Device Monitoring and Abnormality Recovery System for Computer Rooms
Authors: Hu Chung Chiang , Li Shing Han , Tsai Tien Wei
Published: October 2011

The equipments in computer rooms are complicated in nature. Many factors may influence their normal operations, for example: voltage, temperature, humidity, and the normalcy of systems. It would be prudent to have a monitoring system to prevent from unpredictable problems. Most monitoring systems in the market can only issue alarms in abnormal situations and then analyze the aftermath. They are also expansive and lack the ability for distant instant control. To tackle this problem, after our successful and practical experiments, we utilize GSM text messaging ability (i.e. SMS, short message service) and make distant monitoring possible. The monitoring system is established with a reasonable price that is well below current market. With this system, the manager/administrator can monitor the real-time status of equipments in computer rooms, send control commands through SMS and then get them executed to solve the problems instantly and effectively.
Analysis and Experimentation of the Robotic System for Archwire Bending
Authors: Zhang Yong De , Jiang Ji Xiong
Published: October 2011

Archwire bending is one of the key components in orthodontic treatment. However, it is a very difficult work due to the high stiffness and superelasticity of orthodontic wire. The traditional way of acquiring the formed archwire curve is based on manual operation, which will randomly bring numerous errors caused by human factors. This paper proposes a novel robotic system to bend archwire into desired configuration. Structure and elements of robotic system for archwire bending was studied. Coordinate systems of robotic system were built up. Control points of end effector and control angle of each control point were planned. Preliminary orthodontic wire bending experimentation has been done using the robotic system. The experimental results verified the feasibility of the manufacture strategy of formed orthodontic wire fulfilled by robotic system for orthodontic wire bending.
Correlogram-Based Perceptual Similarity in Vehicle Probabilistic Tracking
Authors: Mao Yan Fen , Chen Ming
Published: October 2011

This paper addresses the problem of dissimilarity measurement and incorporates an auto-correlogram operator into probabilistic tracking. Perceptual similarity measurement based upon color correlogram is proposed to weigh the candidates and obtain the expectation state vector of tracked vehicles. The object color is represented in perceptually better-organized HSV color space, which produced improvement over the original method that used in the RGB color space. Properly quantized HSV color space improved the efficiency of auto-correlogram computation and robustness to changes in color content and variations in illumination. Experimental results demonstrate that the efficiency of HSV color correlogram in weighing samples is better than that of RGB auto-correlogram and HSV color histogram in traffic scene applications.
Establishment of Aircraft Ammunition Fault Diagnosis Expert System Knowledge Base Based on FTA
Authors: Zhang Xin Hui , Yang Shi Liang , Wang Wei Kui , Liu Yun , Wei Yan
Published: October 2011

Aircraft ammunitions inevitably suffer various faults during its storage, use and maintenance. The faults may result in disastrous consequences or make combat missions fail to meet related tactical and strategic requirements, so their diagnoses are significant for the safe and normal storage and use in combats. The diagnoses of the faults are complicated and difficult and always need the participation of experts who are small in quantity. Thus, this paper studies and develops the establishment of an aircraft ammunition fault diagnosis expert system knowledge base for the purposes of better collection, summarization and promotion of the precious experience of experts and a higher fault diagnosis level.
Global Optimization Method Based on Incremental Radial Basis Functions
Authors: Wei Xin , Wu Yi Zhong , Chen Li Ping
Published: October 2011

Global optimization techniques have been used extensively due to their capability in handling complex engineering problems. Metamodel becomes effective method to enhance global optimization. In this paper, we propose a new global optimization method base on incremental metamodel. At each sampling step, we adopt inherited Latin HyperCube design to sample points step by step, and propose a new incremental metamodel to update the cofficient matrix gradually. Experiments proved that the global optimization method has highest efficiency and can be finding global minimum fastly.
Grey Forecasting Model for Patching Blinking in Video-Oculography
Authors: Chen Xue Jun , Yang Yong Ming , He Wei , Wang Jin Gang , Mao Yu Xing
Published: October 2011

Video-oculography (VOG) is a non-invasive method used for the eye tracking detecting. A most important work of VOG is to accurately estimate the pupil center. However, VOG cannot acquire eye movement when the eye blinks. A Grey forecasting model was proposed to predict the pupil center for the blinking frame of VOG video. The Grey forecasting model used GM(1,1) model to carry on the modeling. Then an experiment is provided. The experiment results show that the predicted data of the Grey forecasting meet the characteristics of the patients with nystagmus. The Grey forecasting model is a viable means of accurately predict the pupil center for blinking in VOG.
Ice Detection Based on Near Infrared Image Analysis
Authors: Zhuge Jing Chang , Yu Zhi Jing , Gao Jian Shu
Published: October 2011

In order to detect the ice on aircraft wings, a method based on near infrared image processing is proposed. According to the variety of near-infrared reflectivity, four images of one object are obtained under different detection wavelengths. Water and ice can be distinguished by the different variation trends of near infrared images. In this paper, 1.10μm, 1.16μm, 1.26μm and 1.28μm are selected to be the detection wavelengths. The images of Carbon Fiber Composite material aircraft wings partially covered by water or ice are obtained and analyzed. Parameter D can reflect the variation trend of relative near-infrared reflectivity, so that Parameter D also can be the distinguish basis. The results of the experiment show that the method proposed in this paper is available for ice detection.
K − Bipartite Matching Extendability of Special Graphs
Authors: Hui Zhi Hao , Yang Jin Wei , Zhao Biao
Published: October 2011

Let be a simple connected graph containing a perfect matching. For a positive integer , , is said to be bipartite matching extendable if every bipartite matching of with is included in a perfect matching of . In this paper, we show that bipartite matching extendability of some special graphs.
Research on Wear Debris Recognition Algorithm Based on IFNN
Authors: Wang Xin
Published: October 2011

According to the qualitative characterization of the morphological features of the wear debris, Feature vector mathematics model of wear debris are built,which are based on Foruier parameter refining methord.Then the advantages of fuzzy system and neural network are taken to establish a kind of improved fuzzy neural network (IFNN) models and algorithm.which is used to realize the automatic classification and recognition of wear debris. An improved learning algorithm with the modified fuzzy weight is proposed on the basis of the fuzzy neurons model for the max-min fuzzy operator. The amount of calculation for the improved FNN model is reduced greatly and the convergence velocity is improved. At last ,the experiment results show that the recognition method based on the IFNN is good at algorithm convergence speed and recognition accuracy.
Sealing Methods and Principles Based on Commonly Plastic Packaging Containers
Authors: Cao Li Jie , Wang Bao Zhong
Published: October 2011

The overall effect of sealing the packaging has a very important role. Sealed plastic containers divided into four main ways, namely the bundle sealing, adhesive sealing, physical sealing and filling and sealing. They have their own characteristics. Bundling seal means the product can not be sealed, but its use is very wide, has a high degree of freedom. Low adhesive strength of adhesive sealing, but it is widely used. More complex structure of the physical sealing, but it has a wide variety of functions. Used in the filling and sealing gaskets are susceptible to damage, but it has a good seal. This paper analyzes the principles of their seal，which allows you to choose different sealing materials and the corresponding sealing structure to meet a variety of packaging needs.
Buckling Behavior of Clamped Laminated Composite Cylindrical Shells under External Pressure Using Finite Element Method
Authors: Abdi Behzad , Mozafari Hamid , Amran Ayob , Kohandel Roya
Published: October 2011

In this study, the elastic buckling behavior of clamped laminated composite cylindrical shells under external pressure was studied. The Finite Element Method (FEM) was used to predict the critical elastic buckling pressure behavior when composite cylindrical shells were subjected to external pressure. The edges of the cylindrical shell ends were completely constrained to simulate clamped end conditions. The influences of parameters such as wall thickness, fiber angle, number of layers and L/R ratio of laminated composite cylindrical shells on critical buckling pressure were studied. It has been found that the under external pressure, the thickness and the fiber angle of the layers have the most significant effect on the critical buckling pressure.
A Study of Accuracy Error Compensation for Artificial Joint Arthroplasty
Authors: Hsieh Ming Chu , Lin Alan C.
Published: October 2011

With the advance of science and medicine, life expectancy of human beings becomes increasingly higher. Never the less, human bones and joints very often could be impaired and cause pain due to degeneration, osteoporosis, and long-term use. With the advance in science and medical engineering, artificial joint replacement can greatly relieve pain and improve the functionality of the joint in cases of severe joint diseases. X-ray Computed Tomography (abbreviated CT) is a medical imaging test that employs x-ray to penetrate human body and x-ray sensors positioned at the opposite side of the body to receive the x-ray. The x-ray images are then processed by computer to create tomography, but errors in measuring accuracy none the less could cause distortion to the computed tomography. Previous concept of designing artificial joint component has been existent in simulated situation, and there are many insurmountable technical difficulties in the practice of reconstruction which results in design flaw in the geometric shape of artificial joint body and increases the risk of failure. This study uses empirical method to determine the shape and size that is closest to human bone, and aims to achieve accuracy error compensation by means of correction mode and consequently improve the accuracy of reconstructed artificial joint and lower the risk of failure in artificial joint arthroplasty.
Roll Casting of Recycled AA5182
Authors: Haga Toshio , Komeda Kosuke , Mtsuoka Kenta , Kumai Shinji , Watari Hisaki
Published: October 2011

Roll casting of the model alloy of recycled AA5182 aluminum alloy was investigated. Fe up to 0.6% was added to the AA5182 to make the model alloys of recycled AA5182. Increase of 0.6% of Fe means that the recycle was three times operated. A vertical type high speed twin roll caster was used. Some devices were operated on the twin roll caster to increase the cooling rate in order to make impurity fine. The roll speed could be increased up to 80m/min. The roll-castability did not become worse by the addition of the Fe. The LDR (limiting Drawing Ratio) was 1.9 when the Fe addition was 0.6. The deterioration of the mechanical properties by the addition of impurity Fe was very small.
Some Error Estimates on the Large Jump Asymptotic Method for Parabolic Iterface Problems
Authors: Nie Cun Yun , Yu Hai Yuan
Published: October 2011

To approximate some problems with strongly discontinuous coefficients, we present the large jump asymptotic method for parabolic interface problems, focus on the derivation and proof of the asymptotic error estimates for our approximation, and show it is of order two. Numerical experiments verify the theoretical results.
Study on Bayesian Method for Life Distribution of Zero-Failure Data
Authors: Tang Yan Feng , Feng Hui Juan , Wang Sen
Published: October 2011

With the development of science and technology, the quality of the product is better and better. Consequently, in the time-ended life tests, zero-failure data is of frequent occurrence． So the evaluation of the product’s life has important meaning and greatly practical value． While Bayesian estimation is a very effective method about the analysis of the product’s zero-failure data. In the paper, Bayesian estimation of failure probability of zero-failure data are take out, combined linear fitting method and the software of Matlab, the method to ascertain types of product’s life distribution is come out according to zero-failure data. Finally calculation is performed regarding to zero-failure data of a certain model engine, and ascertain the equation of the engine’s life distribution.
Solving Rate Equations Including Background Losses Applicable to Threshold Pumped Fiber Lasers with Three-Energy-Level Dopants
Authors: Wang Jia Ling , Du Xin , Lv Jia , Dou Ru Hai , Chen Jian Guo , Duan Zhi Chun , Zhang Li Ping
Published: October 2011

An analytical expression of the threshold pump power of the fiber laser with three-energy-level dopants has been obtained from rate equations including loss coefficients of the pump and laser radiations. And the rate equations describing the threshold pumped fiber lasers have been analytically solved following the derivation of the implicit expression specifying the pump variation along the fiber and expressions of the position dependent population densities on the three energy levels in terms of the pump variation.
The Quality Evaluation of Monascus Pigments and Red Yeast Rice of China
Authors: Wang Chang Lu , Wang Jing , Chen Mian Hua , Wang Yu Rong , Li Feng Juan
Published: October 2011

Red Yeast Rice and monascus pigments are main monascus products in China. Monascus pigments are used as natural food colorants. Red Yeast Rice can be used as material of monascus pigments or as nutrition supplement. The citrinin contamination in monascus products restricts the health development of monascus fermentation relative companies. We collected and investigated 20 monascus products from different companies in China. The quality evaluation was measured from three aspects as follow: pigments color values, monacolin k content, and contamination of citrinin. The results showed that 50% monascus pigments samples are superior in quality, which have higher color values without the citrinin contamination. Most of Red Yeast Rice samples absent of monacolin k. Only two Red Yeast Rice samples contain monacolin k, which accompanied with citrinin contamination.
Research of Fatigue Fracture on Fillet Welded Joints Made of FV520B
Authors: Fan Jun Ling , Guo Xing Lin , Zhao Yan Guang , Wu Cheng Wei , Deng De Wei
Published: October 2011

The fatigue parameters of welded joints made of FV520B were obtained considering the real operating situations. The fatigue fracture types were divided into two groups. The scanning electron microscope (SEM) was applied to carefully study the fatigue fracture surfaces so as to investigate the fatigue failure mechanisms. The microstructures of the base metal and the weld seam were studied by the metallographic microscope (MM), SEM and TEM in support of the dissimilar mechanical property analysis. The present paper concluded that the fatigue microcracks mainly initiated from the surface near the weld toe and inclusions in the weld seam, the heat-affected zone (HAZ) disappeared due to the postweld heat-treatment processes, and that the fatigue resistance of the base metal was better than the weld seam.
Research on the Oxidation Degumming of Ramie with Alkaline Pectinase and Sodium Percarbonate
Authors: Liu Guo Liang , Cui Qi Lu , Ding Ruo Yao , Li Zheng Fan , Zhong Xiao Min , Yu Chong Wen
Published: October 2011

The application of the alkaline pectinase and sodium percarbonate in the degumming of ramie was studied in this paper. According to the tests such as the fiber fineness, the single fiber tenacity and the fiber surface properties, alkaline pectinase and sodium percarbonate on the properties of degummed ramie fiber was discussed. The results showed that the effect of the degumming of ramie was associated with temperature, concentration of alkaline pectinase, time and pH value. When the temperature is 60°C, the time is 3 hours, the concentration of alkaline pectinase is 3g/L and pH 8.5, the tenacity of fiber is the highest, the fineness is the finest. Due to the application of sodium percarbonate in the inactivation process, the properties of degummed ramie fiber have been further improved and the gum of the fiber surface has been further reduced.
Application of Computational Fluid Dynamic for Hydraulic Design
Authors: Wang Li Ying , Wei De Hua
Published: October 2011

This paper studies the modern design methods of hydraulic machinery by the use of Computational Fluid Dynamic (CFD), the design method not only makes up the shortcomings of the traditional design method, but also can be compared on the computer which can save a lot of trial and testing costs in new product development. Form the velocity distribution and pressure distribution of turbine, the example shows, the simulated flow field using CFD software is in agreement with the actual condition and it basically meets the requirements of design.
Forming and Transforming of by-Product Phases in Reactive Flame Sprayed Al2O3-Based Coatings
Authors: Liu Hong Wei , Wang Jian Jiang , Sun Xiao Feng , Qiu Ji
Published: October 2011

The multiphase coatings with major phases Al2O3-AlxCuy were prepared by the reactive flame spray technology. The melting and reactive behavior of the Al-CuO agglomerated particles and the forming process of the coatings were studied by means of water-quenching experiments and the methods of XRD and SEM. It was shown that during the spray distance between 60 and 150 millimeters, CuO in the agglomerated particles was heated to decompose into Cu2O, Cu and O2. During the flying course, a little of Al reacted with Cu2O and produced Al2O3 and Cu. The reduced Cu mutually dissolved with Al and formed liquid Al-Cu alloy. After the spray particles bumped into the substrate, Cu2O reacted with Al richly, then lots of Al2O3 was produced and Cu was reduced at the same time. These products were wallowed up by the liquid Al-Cu alloy soon. When the temperature of the system dropped quickly, the structure transforming process began. The intermetallics of Cu9Al4 and Al2Cu3 were deposited from the liquid Al-Cu alloy via complicated eutectic reaction and eutectoid reaction.
A Modular Design Method Based on Control-Model
Authors: Qiao Hu , Yang Hai Cheng , Mo Rong , Zhang Dong Liang
Published: October 2011

In order to solve problems concerning the complex module replacement and positioning difficulties in the modular design process, the control-model which reflects the main structure of product is established. Control-model bases itself on the product’s absolute coordinate system, and by establishing datum plane and sketches it reflects the main structure of products. According to the relationship between modules, modules can be partitioned into main-modules and attached-modules. The main- and attached-modules established by using control-model as seed file contain relevant information of the control-model, therefore the method of modules’ rapid positioning by comparison and updating as well as module change strategies can be used to realize modular design process without assembly constraints. Finally, taking a certain type of tank semi-trailer as an example, this paper makes detailed explanation about the modular design method based on control-model.
An Analysis of Collinear Periodic Crack-Tip Stress Field of an Infinite Plate Subjected to Concentrated Force
Authors: Zhang Xue Xia , Li Chan , Cui Xiao Chao , Zhao Wen Bin
Published: October 2011

The Stress field of collinear periodic cracks in an infinite orthotropic composite plate subjected to the concentrated force is studied. The mechanical problem is turned into partial differential boundary value problem. The solution of partial differential equations can be obtained by the complex function methods, which contains unknown coefficients. Using undetermined coefficients method and with the help of boundary conditions, the partial differential boundary value problem is solved. The expressions for stress and displacements near crack tip are derived. Since the distribution of periodic cracks, the stress intensity factor is related to crack shape. Finally, a numerical example shows that the stress changes with the polar angle.
Application Study of Conceptual Design in the Product Design
Authors: Hu Rui Bo , Li Jing Yuan , Chen Li Yan , Xu Ren Ping , Wang Kun Qian , Mao Xing Ran
Published: October 2011

For making the conceptual design process optimization, achieve its various function demand, and confirm the optimal proposal. Contra pose the shortage of conceptual design process, combine the basic national conditions in china, we put forward the basic definition of the conceptual design. Firstly we discussed the basic content and basic step of the conceptual design, secondly, we analyzed demand design, function design, principle design and conceptual design according to designing weapon cupboard for the armed forces department in swallow village located in Hefeng country. We get the superiority of the conceptual design, Benefit designers to use their talents, benefit the innovative design, Stimulate the product design standardization and formulation, benefit product design sustainable and rapid development.
Influence of Working Lining Parameters on Stress Field of Ladle Composite Construction Body
Authors: Li Gong Fa , Xu Si Qiang , Jiang Guo Zhang , Wu Ze Hao , Kong Jian Yi , Xie Liang Xi
Published: October 2011

The ladle is an important equipment of the metallurgical industry. Distribution of thermomechanical stress in linings has an essential influence on its life, and the size of its life-span influences the economic benefits of the iron and steel enterprise directly. Two-dimensional model of ladle based on law of finite element method is built, and the influence of thermal conductivity, thermal expansion coefficient, elasticity coefficient and thickness of work lining on ladle stress field are discussed. The calculation results indicate that stress increases with the increase of thermal conductivity, thermal expansion coefficient and elasticity coefficient and decrease of thickness.
Research of Virtual Model Making System for Computer Aided Industrial Design
Authors: Qi Bin , Zhao Bo , Sun Xia , Sun Xiao Ming
Published: October 2011

Computer aided industrial design (CAID) brings qualitative changes for traditional industrial design on the sides of design method, process and theory. In this paper a new method is proposed with the aim of making the model capable of holding and manipulating the shape features in order to support the students in the design process. The key concept of this study is virtual model making system (VMMS) which consists of numerous sets of rules. VMMS is a new CAID method, and its technical ideas derive from the model making process of automotive product design. With this new CAID method, designers can do any kinds of styling operations on virtual model in the virtual environment generated by computer, such as the cutting or pasting operation on kinds of material. The system was described briefly and a new teaching method of industrial design course was introduced.