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Surface Topography of Fine-grained ZrO_2 Ceramic by Two-dimensional Ultrasonic Vibration Grinding

第三届教学管理与课程建设学术会议

作者： Xiaoming SHI 1 , Wei QIAN 2 1 school of mechanical engineering, USST, Shanghai, China 2.school of mechanical engineering, USST, Shanghai, China

Cultivating the sense of innovation in university students is one of the aims for institutions of higher education in China. We attempt to explore a system of cultivating extracurricular scientific and technological innovation in the University of Shanghai for Science and Technology. The exploration is made from both the macro perspective and the micro procedures, in combination with taking advantage of the considerable teaching resources if necessary. General principles, specific methods and particular activities in this system are discussed in detail. The research serves to be supplementary work concerning the cultivation of the sense of innovation among university students given the success we have achieved.

关键词： Education Model University Students Innovation Cultivating System

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Journal of Wuhan University of Technology(Materials Science) 2011年第6期26卷 1162-1165页

作者：丁爱玲 school of mechanical and Automation engineering North University of China

The surface quality of fine-grained ZrO2 engineering ceramic were researched using 270# diamond wheel both with and without work-piece two-dimension ultrasonic vibration grinding（WTDUVG）. By AFM images, the surface topography and the micro structure of the two-dimensional ultrasonic vibration grinding ceramics were especially analyzed. The experimental results indicate that the surface roughness is related to grinding vibration mode and the material removal mechanism. Surface quality of WTDUVG is superior to that of conventional grinding, and it is easy for two-dimensional ultrasonic vibration grinding that material removal mechanism is ductile mode grinding.

关键词： two-dimension ultrasonic vibration grinding surface topography ductile grinding

Electrically Conductive Concrete for Heating Using Steel Bars as Electrodes

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Journal of Wuhan University of Technology(Materials Science) 2010年第3期25卷 523-526页

作者：侯作富 school of mechanical engineering Yangtze University

The steel bars with good electrical conductivity were used as two kinds of electrodes in the making of carbon fiber（CF） electrically conductive concrete for *** results of the pertinent experiments illustrate the design is *** change in electrical resistivity over three years＇ hydration time was studied when steel bars were used as lateral face electrodes and top bottom surface electrodes *** temperature rise test was conducted to verify the heating properties of two kinds of *** only the study can reduce the CF volume content of electrically conductive concrete for heating to 0.58% or 0.36% according to different design,but also it will enhance the carrying capacity of the concrete roadway for heating.

关键词： steel bar carbon fiber electrical resistivity temperature rise

RESEARCH OF DYNAMIC CHARACTERIATIC FOR TRANSMISSION SYSTEM

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Chinese Journal of mechanical engineering 2001年第1期14卷 74-77页

作者： Qin Shuren school of mechanical engineering,Chongqing University 重庆大学机械学院重庆

The kinetic precision of transmission chain is a key problem in the research of gear cutting machine transmission *** traditional point of view is to consider the transmission chain as a geometrical meshing system,thus it is deemed that the kinetic precision of the transmission chain only depends on the manufacturing and assembly errors of its transmission *** further research reveals that the kinetic precision of transmission system is closely related with the system dynamic ***,from the dynamic point of view,it is discerned that not only deems the transmission chain as a geometrical meshing system but also considers it as a dynamic system performing with torsional *** the basis of analyses and processes of measuring data of samples from tests of cutting machine's kinetic precision of transmission chain,the results represent that the influences of dynamic characteristics of the transmission system on its kinetic precision is non *** methods for discerning the transfer function of torsional vibration of gear transmission system and experimental results have been given.

关键词： Dynamic characteristics Gear Transmission system

In-plane bistatic backward scattering from seabottom with randomly inhomogeneous sediment and rough interface

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Science China(Physics,Mechanics & Astronomy) 2004年第6期47卷 702-716页

作者： PENG Zhaohui1,,ZHOU Jixun1,& ZHANG Renhe1 2 2 1.Institute of Acoustics,Chinese Academy of Sciences,Beijing 100080,China 2.school of mechanical engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA 1. Institute of Acoustics Chinese Academy of Sciences 100080 Beijing China 2. school of mechanical engineering Georgia Institute of Technology 30332 Atlanta GA USA

The in-plane bistatic backward scattering caused by seabottom with random inhomogeneities and rough interface is studied. This work combines the ray tube integral method of Ivakin et al. and the complex-ray/steepest descent method of Hines. For a given incident grazing angle, the theoretical expression can easily be used to calculate scattering strength for different backward scattering angles. (This is essential for modeling shallow water reverberation by the normal mode approach.) The model is tested against published scattering measurements. The frequency/angle dependence of backward scattering and effects of volume inhomogeneity parameters on backward scattering are also discussed.

关键词： in-plane bistatic backward scattering, inhomogeneous sediment, rough interface.

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Plasma Spray Forming

厦门大学学报（自然科学版） 2002年第S1期41卷 33-34页

作者： FANG Jian-cheng 1, XU Wen-ji 2, SHI Yu-ying 1 (1.College of mechanical engineering and Automation, HQU, Quanzhou 362011, China 2.school of mechanical engineering, DUT, Dalian 116023, China)

In the course of plasma spray, the plasma jet is comprehensively functioned by such effects as thermal pinch, magnetic pinch and mechanical compression and the flow is jetting at a high speed, the energy is concentrated and its center temperature is so high as to reach upwards of 15 000 ℃ which is capable of melting various kinds of materials inclusive of ceramic, it has a broad applied prospects in the fields of automobile, electronics, telecommunications, medical treatment, air navigation & space navigation and light industries etc because of being able to rapid fabricate thin-walled metals, ceramics and alloy parts thereof, metal moulds, functionally gradient material moulds and so on, and it has become a research spotlight for the scholars. The technology of plasma spray forming (PSF) is introduced, and the two different kinds of technique presented in this paper are studied. Some typical links in the course of technical process is also analyzed, including original prototype fabrication and surface treatment, post-treatment of formed workpiece and demoulding methods. When spraying, it should select the appropriate making methods of prototype according to the dimensions, shapes and forming accuracy as required by the formed parts. At the same time, it should be paid to the characteristic of the material for the prototype. The main purpose of surface treatment of the prototype is to raise the quality of formed parts and ensure the integrity demoulding of the coating. The method of the prototype’s surface treatment is closely related to the demoulding method, which is mainly comprised of destructive demoulding, non-destructive demoulding and composite demoulding, and is key technology in PSF. In order to eliminate these intrinsic defects and improve its performance, the fabricated parts can be given the necessary post-treatment so as to further raise the mechanical strength and surface quality. There are many methods for the post-treatment such as chemical reinforc

关键词： plasma spray forming forming technique

Effect of Water and Sediment Regulation on Lower Yellow River

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Transactions of Tianjin University 2009年第2期15卷 113-120页

作者：徐国宾司春棣 school of Civil engineering Tianjin University school of mechanical engineering Shijiazhuang Railway Institute

According to the results of the water and sediment regulations of the Yellow River in year 2002—2007,the effect of erosion and deposition on the lower reaches,the amount and distribution of erosion and deposition in the river mouth area,the adjustment of river regime,the effect of river regulation projects and changes of flowing capacity of the channel are *** is revealed that the water and sediment regulation is efficient to reduce deposition and improve the flowing capacity and the conditions of sediment transport.

关键词： Yellow River water and sediment regulation river control sediment transport

The Remote Product Check and Acceptance Technology Based on Web

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武汉理工大学学报 2006年第S1期28卷 335-338页

作者： YANG Musheng 1,2 ,ZHANG Yu1 (1.school of mechanical engineering,Shandong University of Technology,Zibo 255000,China 2.school of mechanical engineering,Nanjing University of Science and Technology, Nanjing 210094,China) school of mechanical engineering Shandong University of TechnologyZibo 255000China school of mechanical engineering Nanjing University of Science and TechnologyNanjing 210094China school of mechanical engineering Shandong University of TechnologyZibo 255000China

This paper analyzes the feasibility of the remote check and acceptance of product and presents an architecture through which the remote product check and acceptance system can be realized. This paper also illuminates the work process of this system and discusses the technological details of the quality inspection as well as the key technologies.

关键词： remote check and acceptance remote control e-purchase statistical process control

External synchronization of two dynamical systems with uncertain parameters

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Science China(Technological Sciences) 2010年第3期53卷 731-740页

作者： HAN QingKai 1,SUN XiaoYu 2,YANG XiaoGuang 3 &WEN BangChun 1 1 school of mechanical engineering&Automation,Northeastern University,Shenyang 110004,China 2.school of Electrical engineering,Shenyang University of Technology,Shenyang 110023,China 3school of mechanical engineering,The University of Birmingham,Birmingham,B15 2TT,UK 1. school of mechanical engineering & Automation Northeastern University Shenyang 110004 China2. School of Electrical Engineering Shenyang University of Technology Shenyang 110023 China3. School of Mechanical Engineering The University of Birmingham Birmingham B15 2TT UK

External synchronization is addressed as two or more dynamical systems with synchronous motions,which is also regarded as master-slave *** this paper,two dynamical systems,one employs a hysteretic term to model the friction phenomenon,the other involves a hardening stiffness component with the third order of displacement due to flexible deformation,are controlled to converge to the same *** control strategy is extended from feedback control for all parameters known to adaptive control for linear parameters unknown and all parameters *** slave system can keep synchronous motions with the movements of master via the designed control strategy even all the parameters are not *** stability of synchronization error,the transient process into synchronization and the effects of parameters on the designed controller using different control strategies are *** simulation results unfold the feasibility and effectiveness of this synchronization method.

关键词： controlled synchronization uncertain parameters hysteretic system Duffing system

Kinetics analysis of volume phase transition of intelligent neutral thermo-sensitive hydrogels

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Science China(Physics,Mechanics & Astronomy) 2008年第5期51卷 532-540页

作者： WANG XiaoGui1 & LI YiQuan2 1 College of mechanical engineering,Zhejiang University of Technology,Hangzhou 310032,China 2.school of mechanical & Electronic engineering,Changchun University of Science and Technology,Changchun 130022,China 1. College of mechanical engineering Zhejiang University of Technology Hangzhou 310032 China 2. school of mechanical & Electronic engineering Changchun University of Science and Technology Changchun 130022 China

In this work,utilizing the first law of thermodynamics and the Flory mean-field theory,the kinetic deformation studies concerning the volume phase transition of the neutral thermo-sensitive hydrogels were performed *** hydrogel was assumed as a biphasic mixture medium in the framework of the continuum mixture *** the energy conservation of the thermodynamics system of the hydrogel,the governing equations for the kinetics of the nonlinear large deforma-tion were *** explicit analytical expressions of the effective stress tensor and the chemical potential of the fluid of the thermo-sensitive hydrogel PNIPA were also obtained from the Helmholtz free energy,which can model the steady-static volume phase transition quantitatively.

关键词： thermo-sensitive hydrogel volume phase transition effective stress energy conservation