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Ti(C, N) BASED CERAMETS AND ITS FRACTAL ANALYSIS OF FRACTURE SURFACES

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中国有色金属学会会刊：英文版 1996年第2期6卷 101-104页

作者： Liu Ning(Department of Materials science and engineering,Anhui {2. of technology, Hefei 2.0069)Hu Zhenhua Cui Kun(huazhong university of science and technology, wuhan 43.074) ANHUI INST TECHNOL DEPT MAT SCI & ENGNHEFEI 230069PEOPLES R CHINA huazhong UNIV SCI & TECHNOL WUHAN 430074PEOPLES R CHINA

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关键词： Ti(C, N) based ceramets fracture surface fractal analysis

INFLUENCE OF SURFACE HARDENING ON CONTACT FATIGUE LIFE OF NODULAR CAST IRON

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Acta Metallurgica Sinica(English Letters) 1990年第3期3卷 188-193页

作者： TAO Zengyi LUO Jiaming huazhong university of science and technology,wuhan,{2. TAO Zengyi,Faculty of Metallic Materials,Dept.of Mechanical engineering No.2.huazhong university of science and technology,wuhan 43.074,{2.

The influence of laser surface melting and induction hardening on the surface structure,con- tact fatigue life and failure behaviour of the nodular cast iron has been *** con- tact fatigue life can be improved by both laser treatment and induction hardening,but the fail- ure process and type are different from each *** former is due to lumpy and deep spal- ling caused by crack propagation between the quenching zone and the substrate,and the latter is due to nubby and surface flaking caused by the oil wedged action into surface cracks.

关键词： surface hardening contact fatigue life laser melting induction hardening

MICROSTRUCTURE IN laser FUSED HIGH SPEED STEEL W6Mo5Cr4V2.M2.

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Acta Metallurgica Sinica(English Letters) 1993年第1期6卷 36-39页

作者： LIU Ning CUI Kun huazhong university of science and technology,wuhan.{2. DENG Zonggang Hefei university of technology,Hefei,{2. CHENG Benpei KONG Jie institute of Solid State Physics,Academia Sinica,Hefei,{2. Doctorate student,Department of Mechanical engineering No.2.huazhong university of science and technology,wuhan 43.074,{2. huazhong Univ of science and Technology Wuhan China

Microstructure of the deepest zone of high speed steel W6Mo5Cr4V2.M2.melt after laser fu-sion was found to be so fine as the ehill zone of a solidified *** narrower chill zoneformed,the long columnar dendrites grow into the melt and then the fine equiaxed cellularstructure appears in upper melt region nearly *** substructure of cellular grains anddendrites was observed to consist of martensite and retained austenile,while the carbides asM_6C_■ Cr_7C_3 and MC distributed at their *** is believed that the highermicrohardness up to HV_(0.1)=865-960 of the laser fused structure of the alloy is due to the oc-currence of martensite.

关键词： High speed steel W6Mo5Cr4V2.M2. laser fused treatment micrstructure

Neural Nets:Another Paradigm for Decision Support

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Journal of Systems engineering and Electronics 1995年第2期6卷 2-8页

作者： Feng Shan (Dept. of ACE, huazhong university of science and technology, wuhan 43.074,{2.) Dept. of ACE Huazhong University of Science and Technology Wuhan 430074 China

The paper presents an important aspect of Neural Nets application, i. e., their usefulness for decision support. The essential feature of the neural net approach to decision making is that it is a black-box approach, which means one does not try to model the underlying processes, but only looks for a tuning of the parameters of the neural net such that the black-box mimics the sensible behavior. Through the existing widespread applications in industry, business and science, the paper emphasizes their common property as a paradigm for decision support.

关键词： Neural network Neural-net controller Decision support Industrial applications.

Optimality strategy of a sealed-offer simultaneous bargaining protocol

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science china(Information sciences) 2011年第1期54卷 79-90页

作者： ZHANG LinLan1,2.CHEN XueGuang2.& HONG Liu2.1School of Business,Hubei university,wuhan 430062.{2. 2.3} of Systems engineering,huazhong university of science and technology,wuhan 43.074,{2. 1. School of Business Hubei University Wuhan 430062 China2. Institute of Systems Engineering Huazhong University of Science and Technology Wuhan 430074 China

Alternating-offer bargaining protocol is the most predominant way for solving bilateral bargaining ***,alternating-offer may consume much time and cause a low effciency in some ***, a deadlock in which both negotiators are unwilling to concede or refuse to disclose more information may arise. Then mediation is *** paper presents an agent-based sealed-offer simultaneous bargaining protocol by introducing a nonbiased *** information of both agents is considered completely *** our agent-based model,both agents simultaneously submit their respective offers to the mediate *** offers of each agent are not revealed to the *** design can discourage counter-speculation and effectively control fraud and misrepresentation in a certain ***,we analyze how an agent can exploit the available information in selecting a strategy that maximizes its expected utility and give the optimal offers of each agent at each stage of the *** groups of automated experiments are conducted to evaluate the performance of the proposed automated negotiation procedure.

关键词： automated negotiation bargaining sealed-bid optimal strategy

CAD/CAE OF THE WORKING CHARACTERISTICS OF A NEW TYPE OF FLUID COUPLING SHOCK ABSORBER

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Chinese Journal of Mechanical engineering 2002年第3期15卷 222-227页

作者： Yang Ping Zhong Yifang Zhou JiSchool of Mechanical science and engineering,{2.,wuhan 43.074, chinaLiu Yong Guilin institute of Electronic technology *** School of Mechanical science and engineering Huazhong University of Science and Technology Wuhan 430074 China

For purpose of simulation of the working characteristics of a new type offluid coupling shock absorber for vibration protection of sensitive equipment, a physical model ispresented by analyzing the internal fluid dynamic phenomenon with respect to the coupling shockabsorber and implemented in MATLAB software package. Using the model it is possible to evaluate theimportance of different factors for design of the shock absorber. In the meantime, the key-modelmachine is designed for coupling dynamic test. Comparisons with experimental results confirm thevalidity of the model. So the CAD/CAE software has been developed in MATLAB for design andexperimental test of the new coupling shock absorber.

关键词： Fluid coupling shock absorber Working characteristics Model Simulation

Interactions of particles with solidifying front in Al_2._(3P) /Al Si composites

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中国有色金属学会会刊：英文版 1999年第3期9卷 524-529页

作者： Wu Shusen(吴树森), Huang Naiyu(黄乃瑜),An Ping(安萍) College of Materials science and engineering,{2., wuhan 43.074, P.R. china huazhong Univ Sci & Technol Coll Mat Sci & Engn Wuhan 430074 Peoples R China

The behavior of ceramic particles at the solid/liquid interface and the distribution of particles in metallic matrix composites was studied with a zone unidirectional solidification method. Two kinds of partice dispersed composites, Al 2. 3P /Al 12.6%Si Sr and Al 2. 3P /Al 12.6%Si Sr Ca containing Al 2. 3 particles in volume fraction 2.～5% were used. In the Al 2. 3P /Al Si Sr composites, the particles were pushed by the solidifying front, and did not uniformly distribute in the solid. But in the Al 2. 3P /Al Si Sr Ca composites, the particles were engulfed by the solidifying front and uniformly distributed in the solid. The particles engulfing into the solid was realized only by Sr and Ca addition at the same time. As the interfacial energy between solid and particle was decreased in this case, the Al 2. 3 particles acted as the substrates of heterogeneous nucleation for the Si phases, which made the particles to be engulfed.

关键词： metallic matrix composites solidification particle size distributionDocument code: A

A measure of centrality based on modularity matrix

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Progress in Natural science:Materials International 2008年第8期18卷 1043-1047页

作者： Gaoxia Wang, Yi Shen *, Enjie Luan The Department of Control science and engineering,{2., wuhan 43.074, china The Department of Control science and engineering Huazhong University of Science and Technology Wuhan 430074 China

In this paper, a kind of measure of structural centrality for networks, called modularity centrality, is introduced. This centrality index is based on the eigenvector belonging to the largest magnitude eigenvalue of modularity matrix. The measure is illustrated and compared with the standard centrality measures using a classic dataset. The statistical distribution of modularity centrality is investigated by considering large computer generated graphs and two networks from the real world.

关键词： Centrality Modularity centrality Modularity matrix

Investigation of 'chazi'(damaged-enamels)on Chenghua doucai Porcelains

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science china(Technological sciences) 2009年第6期52卷 1722-1729页

作者： DU Feng1 & SU BaoRu2.1 institute of Chemistry & Molecular engineering,Qingdao {2. of science & technology,Qingdao,china 2.College of Information science & technology,Qingdao {2. of science & technology,Qingdao,china institute of Chemistry & Molecular engineering Qingdao University of Science & Technology Qingdao China College of Information science & technology Qingdao University of Science & Technology Qingdao China

At the end of the 1950s,Sun Yingzhou considered that the 'chazi'(damaged colour)on Chenghua doucai imperial porcelain as a defect was originally produced in firing process during Chenghua period(1465―1487).Researchers in china have accepted his *** any fragment with the 'chazi' has never been found in several tons of Chenghua imperial sherds excavated from Ming imperial kiln site in *** china,few scholars have questioned the formation of 'chazi',and further investigated *** researchers at the Research Laboratory in the British Museum,employing unde-structive EDXRF,have analyzed the chemical composition of the 'chazi'(damaged colour)on a Chen-ghua doucai stem cup in the museum,and they have confirmed that the 'chazi'(damaged colour)was caused by the fire of the Jianfu palace in the Forbidden City in *** on their research,the authors studied the colour chemical principle of the 'chazi's' formation *** to the ceramic {2. principle,scientific reasoning for the 'chazi' was carried *** the help of the history of Qing court,the brainteaser of the 'chazi' was totally uncovered,the misunderstanding for the 'chazi' has also been *** research also suggests that employing modern science and {2. is a direction to study Chinese ancient ceramic further.

关键词： Chenghua doucai porcelains court eunuchs the set on fire at the Jianfu palace ’chazi’(damaged-enamels) the British Museum colour chemical principle archaeology using science and technology