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Experimental and Numerical Investigation on Impact Performance of Carbon Reinforced Aluminum Laminates

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Journal of Materials Science & Technology 2010年第4期26卷 327-332页

作者： S.H. Song Y.S. byun T.W. Ku W.J. Song J. Kim b.S. kang National Core Research Center Pusan National University Busan 609-735 Korea Dept. of Aerospace Engineering Pusan National University Busan 609-735 Korea Industrial Liaison Innovation Cluster Pusan National University Busan 609-735 Korea

It is known that fiber metal laminates （FML） as one of hybrid materials with thin metal sheets and fiber/epoxy layers have the characteristics of the excellent damage tolerance, fatigue and impact properties with a relatively low density. Therefore, the mechanical components using FML can contribute the enhanced safety level of the sound construction toward the whole body. In this study, the impact performance of carbon reinforced aluminum laminates （CARAL） is investigated by experiments and numerical simulations. Drop weight tests are carried out with the weight of 4.7 kg at the speed of 1 and 2 m/s, respectively. Dynamic non-linear transient analyses are also accomplished using a finite element analysis software, AbAQUS. The experiment results and numerical results are compared with impact load-time histories. Also, energy-time histories are applied to investigate the impact performance of CARAL.

关键词： Fiber metal laminates (FML) Carbon reinforced aluminum laminates (CARAL) Numerical simulation Impact performance

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二维储层模型的粘弹性地震响应

国外油气勘探 1994年第4期6卷 440-449页

作者： I.b.kang 郭金城

最近,张弛机制的应用,已有可能在地震响应的时间域数值计算中准确地模拟粘弹性(Q)效应。因此,现在可以合成纵、横波的品质因数(Q_p及Q_s),以及密度(ρ)和纵横波速度(V_p及V_s)等任意空间变化模型的地震记录。单独由于Q差异产生的反射波... 详细信息

最近,张弛机制的应用,已有可能在地震响应的时间域数值计算中准确地模拟粘弹性(Q)效应。因此,现在可以合成纵、横波的品质因数(Q_p及Q_s),以及密度(ρ)和纵横波速度(V_p及V_s)等任意空间变化模型的地震记录。单独由于Q差异产生的反射波,其振幅可与速度差异产生的振幅一样大。Q效应,包括它们与V_p、V_s及ρ的相互作用在内,对储层的地震响应有明显的影响。对于典型地震频率的带限数据,Q对反射率及衰减的影响比对频散的影响更加明显。合成实例包括了对储层的勘探、评价及监测等方面的实际应用。Q的影响在地面地震及非零井源距垂直地震剖面数据中都清晰可见。因而在AVO分析中,忽视Q可产生错误的结论。

关键词：储集层地震响应地震记录

Study of the Interface between Steel Insert and Aluminum Casting in EPC

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Journal of Materials Science & Technology 2008年第1期24卷 60-64页

作者： K.H.Choe K.S.Park b.H.kang G.S.Cho K.Y.Kim K.W.Lee M.H.Kim A.Ikenaga S.Koroyasu Advanced Material Processing Team Korea Institute of Industrial Technology IncheonKorea Department of Materials Engineering Korea University of Technology and Education ChoongnamKorea Department of Materials Science and Engineering Inha University IncheonKorea Department of Metallurgy and Materials Science Graduate School of Engineering Osaka Prefecture UniversityOsakaJapan Department of Mechanical and Precision Systems Teiko University UtsunomiyaJapan

The effective surface treatment method for steel insert composited with Al base metal by expendable pattern casting （EPC） process and the bonding interface between steel insert and Al base metal were *** was found that Zn plating on steel insert was effective on improving the bonding property between steel insert and Al base metal in EPC *** is thought to promote the formation of diffusion *** almost none content of Zn was observed in the boundary which had been plated on the steel insert.A diffusion layer consisting of Al,Si and Fe was formed at the insert/alloy interface and its hardness was higher than the steel insert as matter of course Al base *** layer turned out to be intermetallic compounds of Al-Si-Fe *** pouring temperature promoted the diffusion of Fe into Al alloy,so Fe content in intermetallic layers increased at higher pouring *** layer nearest to steel disappeared due to applied pressure.

关键词： Expendable pattern casting Insert casting Intermetallic compound Al-Si-Fesystem

NMR Evidence for Universal Pseudogap behavior in Quasi-Two-Dimensional FeSe-based Superconductors

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Chinese Physics Letters 2022年第12期39卷 71-76页

作者： b.L.kang M.Z.Shi D.Zhao S.J.Li J.Li L.X.Zheng D.W.Song L.P.Nie T.Wu X.H.Chen Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Key Laboratory of Strongly coupled Quantum Matter Physics Department of PhysicsUniversity of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Superconducting Electronics(CENSE) Shanghai 200050China 4Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China

Recently,by intercalating organic ions into bulk FeSe superconductors,two kinds of layered FeSe-based superconductors[(TbA)xFeSe and(CTA)xFeSe]with superconducting transition temperatures(Tc)above 40 K have been *** to the large interlayer distance(~15A),these new layered superconductors have a large resistivity anisotropy analogous to bismuth-based cuprate ***,remarkable pseudogap behavior well above Tcis revealed by nuclear magnetic resonance(NMR)measurements on77Se nuclei,suggesting a preformed pairing scenario similar to that of ***,we report another new kind of organic-ion-intercalated FeSe superconductor,(PY)xFeSe,with a reduced interlayer distance(~10A)compared to(TbA)xFeSe and(CTA)*** performing77Se NMR and transport measurements,we observe a similar pseudogap behavior well above Tcof~40 K and a large resistivity anisotropy of~10~4 in(PY)*** these facts strongly support a universal pseudogap behavior in these layered FeSe-based superconductors with quasi-two-dimensional electronic structures.

关键词： NMR superconductors layered

New Diseases of Tree Peony in Luoyang Area of China

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New Diseases of Tree Peony in Luoyang Area of China

中国植物病理学会2011年学术年会

作者： D.Zhao,Y.b.Duan,Y.b.kang (College of Forestry,Henan University of Science and Technology,Luoyang,Henan,471003,China)

＜正＞*** spot disease of tree peony caused by Cylindrocladium canadense Symptom:On leaves,initial symptoms appeared as small,brown,round or irregular spots with watery *** spots gradually enlarged form circular or oval,yellowish brown to dark brown *** a humid atmosphere,fluffy,white,masses of fungal mycelium and conidia developed on the *** lesions eventually coalesced and expanded along the nervure. Samples of diseased leaves were collected from some botanical gardens. Pathogeny:Cylindrocladium canadense

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三维储层模型的粘弹性地震响应

油气藏评价与开发 1994年第2期 79-80页

作者： I.b.kang ,G.A.McMechan

最近,在计算时间域地震响应时,我们用张驰机理精确地模拟了粘弹性（Q）响应。采用空间变量（纵、横渡品质因子Qp和Qs,密度ρ及纵横波速度Vp和Vs）任意变化的模型,可得到相应的合成记录。Q值差异产生的反射振幅幅度可与速度差产生的反射... 详细信息

最近,在计算时间域地震响应时,我们用张驰机理精确地模拟了粘弹性（Q）响应。采用空间变量（纵、横渡品质因子Qp和Qs,密度ρ及纵横波速度Vp和Vs）任意变化的模型,可得到相应的合成记录。Q值差异产生的反射振幅幅度可与速度差产生的反射振幅相当。Q效应与VP、Vs及ρ对储层地震响应的影响很大。对常规带限数据而言,Q值对反射系数及衰减的影响要比它对散射的影响大。合成数据实例介绍了该方法在储层勘探、评价和监控中的应用。Q值的影响在地面数据和VSP数据上清晰可见。由此可见,在

关键词：地震响应反射振幅粘弹性流动特性

MICROFLORA DISTURbANCES AND ATTEMPTED ADJUSTMENTS

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中华医学杂志(英文版) 1983年第2期96卷 84-84页

作者： X Wei b kang M Y Fan Epidemiology and Microbiology Institute Beijing Microbiology Department Dalian Medical College Dalian

The 30 years’ experience in studies of microflora disturbances and their attempted adjustments was summed up. In order to observe the antagonistic action of the indigenous bacteria against the invading pathogens, a series of in vitro tests are made. In vivo studies are carried out in house rats for demonstrating ecologic manifestations of normal bacterial flora. Clinical studies are undertaken in dysentery and diarrheas. The results obtained are tabulated and described. Flora disturbances are corrected by adjustment of nutrition, disturbed micro-flora etc. The authors conclude that being aware of the existence of intestinal flora disturbance is very important to make proper diagnosis as well as to prescribe proper treatment and prevention in accordance with the microbial flora changes as the guiding principle.

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THE INFLUENCES OF Zn CONTENT AND COOLING RATE ON ASCAST MICROSTRUCTURE IN Al75% Mg ALLOYS

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Acta Metallurgica Sinica(English Letters) 1999年第4期12卷 521-527页

作者： Q.Wu1)and S.b.kang2) 1) Department of Material Science and Engineering, Nanjing University of Science and Technology , Nanjing,210014 ,China 2) Department of Material Engineering ,Korea Institute of Mechanics and Materials,Changwon , Korea

Thesolidification processof Al 7 5% Mg Zn alloys wasstudiedin *** Zn contentand cooling rate werechanged andtheirinfluenceson as cast microstructure were measured by different methods. The solute segregation during nonequilibrium solidification process wascalculated byternary Scheilequation which wasin good agreement with experimentresulte.

关键词： aluminum alloy as cast microstructure nonequilibrium solidification

A New Arbutin Derivative from the Leaves of Heliciopsis lobata

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A New Arbutin Derivative from the Leaves of Heliciopsis loba...