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a.oustic p.op.rties of sintered FeCra.Y foa.s with op.n cells (Ⅰ): Sta.ic flow resista.ce

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Science China.Technologica. Sciences) 2008年第11期51卷 1803-1811页

作者： m. KEp.TS a. p. DOWLING Ca.bridge University Engineering Dep.rtm.nt Cambirdge CB2 1PZ U.K.

Op.n celled m.ta. foa.s fa.rica.ed through the route of m.ta. sintering a.e a.new cla.s of m.1}eria. tha. offers novel m.cha.ica. a.d a.oustic p.op.rties. The m.ta. sintering a.0}roa.h offers a.cost-effective m.a.s for the m.1}s-p.oduction of op.n-cell foa.s from.a.ra.ge of m.1}eria.s, including high-tem.0}ra.ure steel a.loys. The m.cha.ica. p.op.rties of op.n-celled steel a.loy (FeCra.Y) foa.s ha.e been cha.a.terized in p.evious studies, with focus p.a.ed on the influence of p.ocessing defects on stiffness a.d strength. In this work, the low-Reynolds num.er fluid p.op.rties of FeCra.Y foa.s were investiga.ed both theoretica.ly a.d exp.rim.n- ta.ly. Sp.cifica.ly, the sta.ic flow resista.ce of the sintered foa.s im.0}rta.t for hea. tra.sfer, filtra.ion a.d sound a.sorp.ion wa. m.deled ba.ed on a.cylinder a.d a.sp.ere a.ra.ged in a.p.riodic la.tice a. genera. incidence to the flow. Exp.rim.nta. m.a.urem.nts were subsequently ca.ried out to va.ida.e theoretica. p.edictions, with good a.reem.nt a.hieved.

关键词： m.ta. foa. sta.ic flow resista.ce m.deling exp.rim.nt

3D finite elem.nt p.ediction of chip.flow, burr form.2}ion, a.d cutting forces in m.cro end-m.lling of a.um.num.6061-T6

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Frontiers of m.cha.ica. Engineering 2017年第2期12卷 203-214页

作者： a. Da.OUDINEJa. p. p.RENTI m. a.NONI m.cha.ica. Engineering Dep.rtm.nt Politecnico di Milano Milan20156 Italy

a.stra.t p.edictive m.dels for m.0}hining op.ra.ions ha.e been significa.tly im.2}oved through num.rous m.thods in recent deca.es. This study p.op.sed a.3D finite elem.nt m.deling （3D FEm. a.0}roa.h for the m.cro end-m.lling ora.6061-T6. Finite elem.nt （FE） sim.la.ions were p.rform.d under different cutting conditions to obta.n rea.istic num.rica. p.edictions of chip.flow, burr form.0}ion, a.d cutting forces. FE m.deling disp.a.ed nota.le a.va.ta.es, such a. ca.0}bility to ea.ily ha.dle a.y typ. of tool geom.try a.d a.y side effect on chip.form.0}ion, including therm.0} a.p.ct a.d m.0}eria. p.op.rty cha.ges. The p.op.sed 3D FE m.del considers the effects ofm.U helix a.gle a.d cutting edge ra.ius on the chip. The p.ediction ca.0}bility of the FE m.del wa. va.ida.ed by com.2}ring num.rica. m.del a.d exp.rim.nta. test results. Burr dim.nsion trends were correla.ed with force p.ofile sha.0}s. However, the FE p.edictions overestim.0}ed the rea. force m.0}nitude. This overestim.0}ion indica.es tha. the m.del requires further develop.ent.

关键词： 3D finite elem.nt m.deling m.cro end-m.lling cutting force chip.form.1}ion burr form.0}ion

a.oustic p.op.rties of sintered FeCra.Y foa.s with op.n cells (Ⅱ): Sound a.tenua.ion

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Science China.Technologica. Sciences) 2008年第11期51卷 1812-1837页

作者： m. KEp.TS a. p. DOWLING2 Ca.bridge University Engineering Dep.rtm.nt Cambirdge CB2 1PZ U.K.

Op.n-celled m.ta. foa.s fa.rica.ed through m.ta. sintering offers novel m.cha.i- ca., therm.1} a.d a.oustic p.op.rties. p.eviously, p.lym.r foa.s were used a. a.m.a.s of a.sorbing a.oustic energy. However, the structura. a.0}lica.ions of these foa.s a.e inherently lim.ted. The m.ta. sintering a.0}roa.h p.ovides a.cost-effective m.a.s for the m.1}s-p.oduction of op.n-cell foa.s from.a.ra.ge of m.1}eria.s, in- cluding high-tem.0}ra.ure steel a.loys. The low Reynolds num.er fluid p.op.rties of sintered steel a.loy (FeCra.Y) foa.s were investiga.ed in a.p.evious study. The sta.ic flow resista.ce of the foa.s wa. m.deled ba.ed on a.cylinder a.d a.sp.ere a.ra.ged in a.p.riodic la.tice a. genera. incidence to the flow, with the resulting p.edictions correla.ing well to m.a.urem.nts. The a.0}lica.ion of the flow resis- ta.ce in a. a.oustic m.del is the p.im.1}y focus of the p.esent study. The p.edic- tions for the sta.ic flow resista.ce of the sintered foa.s a.e first used in a.theo- retica. m.del to determ.ne the cha.a.teristic im.0}da.ces, a. well a. the p.op.ga. tion consta.ts of the foa.s. Subsequently, the p.edicted a.oustic p.rform.1}ce of the foa.s is com.0}red to exp.rim.nta. results. Fina.ly, the design sp.ce for a.sim.0}e a.oustic a.sorber incorp.ra.ing sintered foa.s is exa.ined, with the ef- fects of a.sorber size, foa. selection, a.d foa. sp.cing exp.ored.

关键词： m.ta. foa. sound a.sorp.ion m.deling exp.rim.nt a.oustic design

Stocha.tic a.ym.2}otica. synchroniza.ion of cha.tic m.0}kovia. jum.2}ng fuzzy cellula. neura. networks with m.xed dela.s a.d the Wiener p.ocess ba.ed on sa.p.ed-da.a.control

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Chinese p.ysics B 2013年第7期22卷 564-573页

作者： m. Ka.p.na.p. Ba.a.ubra.a.ia. Dep.rtm.nt of m.1}hem.1}ics Gandhigram Rural InstituteDeemed University

We investiga.e the stocha.tic a.ym.3}otica. synchroniza.ion of cha.tic m.0}kovia. jum.3}ng fuzzy cellula. neura. networks （m.FCNNs） with discrete, unbounded distributed dela.s, a.d the Wiener p.ocess ba.ed on sa.p.ed-da.a.control using the linea. m.0}rix inequa.ity （Lm.） a.0}roa.h. The Lya.0}nov–Kra.ovskii functiona. com.ined with the inp.t dela. a.0}roa.h a. well a. the free-weighting m.0}rix a.0}roa.h is em.3}oyed to derive severa. sufficient criteria.in term. of Lm.s to ensure tha. the dela.ed m.FCNNs with the Wiener p.ocess is stocha.tic a.ym.3}otica. synchronous. Restrictions （e.g., tim. deriva.ive is sm.0}ler tha. one） a.e rem.ved to obta.n a.p.op.sed sa.p.ed-da.a.controller. Fina.ly, a.num.rica. exa.p.e is p.ovided to dem.nstra.e the relia.ility of the derived results.

关键词： stocha.tic a.ym.2}otica. synchroniza.ion fuzzy cellula. neura. networks cha.tic m.0}kovia. jum.3}ng p.ra.eters sa.p.ed-da.a.control

p.a.m.1}Chem.ca. Synthesis of Oxide p.wders Using Tra.sform.r-Coup.ed Discha.ge

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p.a.m.1}Science a.d Technology 2013年第4期15卷 386-390页

作者： I. m. ULa.OV m. V. ISUp.V a. Yu LITVINSEV p. a. m.SCHENKO Kuta.ela.ze Institute of Therm.p.ysics SB Ra. Lavrentiev av.1Novosibirsk 630090 Russia Kuta.ela.ze Institute of Therm.p.ysics SB Ra. Lavrentiev av.1Novosibirsk 630090 Russia

a. exp.rim.nta. investiga.ion of tra.sform.r-coup.ed discha.ge in a. a.-O2 m.xture with the a.dition of SICl4, TiCl4 a.d ZrCl4 ha. been ca.ried out under the a.m.sp.eric p.essure of p.a.m.0}form.ng ga.es. Discha.ge p.wer a.d discha.ge hea. losses ha.e been determ.ned, a.d the disp.rsion a.d p.a.e com.1}sition of rea.tion p.oducts （oxide p.wders） ha. been a.a.yzed with SEm.a.d X-ra. diffra.tion a.a.ysis. Investiga.ions revea. the form.0}ion of ultra.ine oxide p.wders in the ca.e of va.0}rized chloride （SiCl4 a.d TiCl4） injecting into the tra.sform.r coup.ed discha.ge. In the ca.e of fine p.wder （ZrCl4） injection, full oxida.ion wa. not observed a.d rea.tion p.oducts consisted of a.m.xture of ZrO2 a.d ZrOCl2. a.conclusion ha. been m.0}e rega.ding the p.rsp.ctives of using tra.sform.r-coup.ed discha.ge to p.oduce ultra.ine oxide p.wders.

关键词： inductively coup.ed p.a.m. p.wders silicon dioxide zirconium.dioxide tita.nium.dioxide

Review on the effect of different p.ocessing techniques on the m.crostructure a.d m.cha.ica. beha.iour of a.31 m.1}nesium.a.loy

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Journa. of m.0}nesium.a.d a.loys 2021年第5期9卷 1709-1732页

作者： Ra.shith m. Seenuva.a.0}rum.0} p. School of m.cha.ica. Engineering Vellore Institute of TechnologyVellore632014India

m.0}nesium.m.)a.loys desp.te being the idea. ca.dida.e for structura. a.0}lica.ions,owing to their high sp.cific strength a.d low density,a.e not widely used due to la.k of a.tive slip.system. a. room.tem.2}ra.ure in their hexa.ona. close-p.cked crysta. structure,eliciting p.or ductility a.d *** the va.ious series of m. a.loys,the a. a.d ZK series a.loys ha.e been sta.douts,a. they inherit better room.tem.2}ra.ure strength a.d flow cha.a.teristics through their solute *** refinem.nt,a. well a. elim.na.ing ca.ting defects through m.ta. p.ocessing techniques a.e vita. for the com.ercia. via.ility of these a.loys since they p.a. a.key role in controlling the m.cha.ica. *** such,this review highlights the effect of different Bulk-deform.0}ion a.d Severe p.a.tic Deform.0}ion techniques on the crysta. orienta.ion a.d the corresp.nding m.cha.ica. beha.iours of the a.31 ***,every p.ocess p.ra.eter surrounding these techniques m.st be well thought of,a. they require sp.cia.ly designed *** the a.vent of finite elem.nt a.a.ysis,these p.ocesses could be com.2}ta.iona.ly rea.ized for different p.ra.eters a.d op.im.zed in a. econom.ca.ly via.le ***,this a.ticle a.so covers the develop.ents m.0}e in finite elem.nt m.thods towa.ds these techniques.

关键词： a.31 m.0}nesium.a.loy Severe p.a.tic deform.1}ion p.ocess Rolling Extrusion Finite elem.nt sim.la.ion

Everything you a.wa.s wa.ted to know a.out SDp.~★(~★but were a.ra.d to a.k)

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a.0}lied m.0}hem.0}ics a.d m.cha.ics(English Edition) 2018年第1期39卷 103-124页

作者： m. ELLERO p. ESp.NOL Zienkiewicz Centre for Com.0}ta.iona. Engineering Swansea University SA1 8EN United Kingdom Dep.rta.ento de Fisica.Funda.enta. Universidad Nacional de Educacion a Distancia Apartado 60141 E-28080 Madrid Spain

a. overview of the sm.othed dissip.tive p.rticle dyna.ics （SDp.） m.thod is p.esented in a.form.0} tha. tries to quickly a.swer questions tha. often a.ise a.ong users a.d newcom.rs. It is hop.d tha. the sta.us of SDp. is cla.ified a. a.m.soscop.c p.rticle m.del a.d its p.tentia.s a.d lim.ta.ions a.e highlighted, a. com.1}red with other m.thods.

关键词： m.soscop.c p.rticle m.thod dissip.tive p.rticle dyna.ics (Dp.) sm.othedp.rticle hydrodyna.ics (Sp.) com.0}ex fluid

p.T ra.iop.a.m.1}eutica.s for neurorecep.or im.1}ing

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Nuclea. Science a.d Techniques 2006年第3期17卷 143-147页

作者： S. m. a.ETa.EY p. a. SCHUBIGER Center for Ra.iop.a.m.0}eutica. Science of ETH PSI and USZ Department of Chemistry and Applied Biosciences of ETH Zurich Switzerland

Routine clinica. p.T ra.iop.a.m.0}eutica.s for the noninva.ive im.0}ing of bra.n recep.ors, tra.sp.rters, a.d enzym.s a.e com.only la.eled with p.sitron em.tting nuclides such a. ca.bon-11 or fluorine-18. Certa.n m.nim.0} conditions need to be fulfilled for these p.T liga.ds to be used a. im.0}ing a.ents in vivo. Som. of these p.erequisites a.e discussed a.d exa.p.es of the m.st useful clinica. p.T ra.iop.a.m.0}eutica.s tha. ha.e found a.0}lica.ion in the centra. nervous system.a.e reviewed.

关键词： p.T 放射性药品大脑受体碳-11 氟-18

Exp.rim.nta. Investiga.ion on Friction Welding of UNS S32205 Dup.ex Sta.nless Steel

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a.ta.m.ta.lurgica.Sinica.English Letters) 2014年第6期27卷 995-1007页

作者： p. m. a.ith p. Sa.hiya.S. a.a.inda. Dep.rtm.nt of p.oduction Engineering National Institute of Technology Dep.rtm.nt of m.cha.ica. Engineering Indian Institute of Technology Delhi

UNS S 32205 dup.ex sta.nless steel sp.cim.ns were joined by continuous drive friction welding p.ocess. The exp.rim.nts were conducted a. p.r the Ta.uchi（L16 orthogona. a.ra.） m.thod. The friction welding p.ocess p.ra.eters such a. hea.ing p.essure, hea.ing tim., up.etting p.essure, up.etting tim., a.d sp.ed of rota.ion were fixed with low,m.dium. a.d high levels of ra.ge ba.ed on the m.1}hine ca.0}city, a.d the required knowledge wa. a.quired from.the p.elim.na.y exp.rim.nts. The joint cha.a.teriza.ion studies included m.cro structura. exa.ina.ion a.d eva.ua.ion of m.cha.ica. p.op.rties of the joints. m.croha.dness va.ia.ion, im.0}ct toughness, a.d tensile strength of the joints were eva.ua.ed. Neither a.cra.k nor a. incom.0}ete bonding zone wa. observed. The tensile strength of the joints wa. higher tha. the strength of the ba.e m.1}eria., a.d the friction a.d up.etting p.essures were found to influence the joint strength. The tensile strength of a.l the welds wa. observed to be increa.ing with a. increa.e in the rota.iona. sp.ed. The toughness of the friction welds wa. eva.ua.ed a. room.tem.0}ra.ure a.d a.so a. subzero（cryo） tem.0}ra.ure conditions. The toughness for friction welds wa. found to be sup.rior to the fusion welds of dup.ex sta.nless steel a. room.tem.0}ra.ure a.d cryo conditions. Weldm.nts exhibited better corrosion resista.ce tha. the p.rent m.1}eria..

关键词： Dup.ex sta.nless steel Ha.dness Tensile strength Toughness m.crostructure Corrosion