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Probabilis.ic an.lys.s.of lin.ar elas.ic cracked s.ructures

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Journ.l of Zhejian. Un.vers.ty-s.ien.e A(Applied Phys.cs.& En.in.erin.) 2007年第11期8卷 1795-1799页

作者： AKRAmIn.m.R.m. ALs.OAIBI Abduln.s.r hadi m.s.A. ARIFFIn.A.K. mOhamED n.A.n. Departmen. of mechan.cal an. materials.En.in.erin. Un.vers.ti Keban.s.an.malays.a Bangi 43600 Selangor Darul Ehsan Malaysia

This.paper pres.n.s.a probabilis.ic methodology for lin.ar fracture mechan.cs.an.lys.s.of cracked s.ructures. The main.focus.is.on.probabilis.ic as.ect related to the n.ture of crack in.material. The methodology in.olves.fin.te elemen. an.lys.s. s.a- tis.ical models.for un.ertain.y in.material properties. crack s.ze, fracture toughn.s. an. loads. an. s.an.ard reliability methods.for evaluatin. probabilis.ic characteris.ics.of lin.ar elas.ic fracture parameter. The un.ertain.y in.the crack s.ze can.have a s.gn.fican. effect on.the probability of failure, particularly when.the crack s.ze has.a large coefficien. of variation. n.merical example is.pres.n.ed to s.ow that probabilis.ic methodology bas.d on.mon.e Carlo s.mulation.provides.accurate es.imates.of failure prob- ability for us. in.lin.ar elas.ic fracture mechan.cs.

关键词： Probabilis.ic fracture mechan.cs Lin.ar elas.ic fracture mechan.cs Failure probability Firs.-order reliability methods

Quan.itative mobility s.ectrum An.lys.s.for Determin.tion.of Electron.an. magn.to Tran.port Properties.of Te-Doped Gas.

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Chin.s. Phys.cs.Letters 2005年第9期22卷 2363-2366页

作者： s. Acar m. Kas.p B. Y. Is.k s. Oezcelik n. Tugluoglu s. Karaden.z Departmen. of Phys.cs Faculty of Science and Arts University of Gazi Teknikokullar 06500 Ankara Turkey Departmen. of materials.Res.arch Ankara Nuclear Research and Training Center 06100 Bes.vler Ankara Turkey

Res.s.ivity, magn.tores.s.ivity an. Hall effect meas.remen.s.in.n.type Te-doped Gas. grown.by the liquid en.aps.led Czochrals.i techn.que are carried out as.fun.tion. of temperature （35-350 K） an. magn.tic field （0-1.35 T）. The power law model is.us.d to explain.the temperature-depen.en. res.s.ivity. The magn.tic-field-depen.en. data are an.lys.d us.n. the quan.itative mobility s.ectrum an.lys.s.techn.que. The effect of in.ividual ban. parameters.（n., n., μL, μr, p an. μp） on.both the electron.an. magn.to tran.ports.have been.dis.us.ed. The EL - Er en.rgy s.paration.between.the L an. con.uction.ban. edges.is.als. derived.

关键词： n.TYPE GAs. GALLIUm An.ImOn.DE mAGn.TOTRAn.PORT CHARACTERIZATIOn COn.UCTIOn.BAn. HALL mAGn.TOREs.s.An.E DEPEn.En.E

High Temperature Creep an. s.perplas.icity in.a mg-Zn.Zr Alloy

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Journ.l of materials.s.ien.e & Techn.logy 2012年第5期28卷 407-413页

作者： s. s.igarelli m. El mehtedi m. Regev E. Gariboldi n. Lecis Dipartimen.o di In.egn.ria In.us.riale e s.ien.e matematiche Universit Politecnica delle Marche Via Brecce Bianche Ancona 60131 Italy mechan.cal En.in.erin. Dept. ORT Braude College Karmiel 21982 Israel Dipartimen.o di meccan.ca Politecnico di Milano via La Masa 34 20156 Milano Italy

Creep an. s.perplas.icity were in.es.igated by tes.in. a fin.-grain.d extruded mg–Zn.Zr magn.s.um alloy un.er a wide ran.e of applied s.res. in.the temperature ran.e between.100 an. 300 ℃. Grain.boun.ary s.idin. became the domin.tin. mechan.s. at 200 ℃, leadin. to a true s.perplas.ic behaviour at 300 ℃, where s.perplas.icity was.attain.d even.un.er relatively high s.rain.rates.（5×10-3 s.1 ）. By con.ras., for lower temperatures. the s.rain.n. proces. was.con.rolled by dis.ocation.climb. A comprehen.ive model, takin. in.o accoun. the s.multan.ous.operation.of the differen. mechan.s.s. was.developed to des.ribe the s.rain.rate depen.en.e on.applied s.res..

关键词： Creep s.perplas.icity magn.s.um alloy

Flexible s.rface-en.an.ed Raman.s.atterin.-active s.bs.rates.bas.d on.n.n.fibrous.membran.s

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n.n. Res.arch 2018年第9期11卷 4468-4488页

作者： Ekaterin. s. Prikhozhden.o Dan.il n. Bratas.ov Dmitry A. Gorin.Alexey m. Yas.chen.k Remote Con.rolled Theran.s.ic s.s.ems.Lab Education and Research Institute of Nanostructures and Biosystems Saratov State University 83 As trakhanskaya Str. Saratov 410012 Russia s.oltech Cen.er for Photon.cs.an. Quan.um materials Skolkovo Institute of Science and Technology Skolkovo Innovation Center 3 Nobel Str. Moscow 143026 Russia

s.rface-en.an.ed Raman.s.atterin. （s.Rs. has.emerged as.an.excellen. an.lytical tool for the effective detection.an. fin.erprin. iden.ification.of various.chemicals. Recen.ly, s.gn.fican. progres. has.been.made in.the fabrication.of s.Rs.active s.bs.rates.us.n. s.mple, in.xpen.ive, an. affordable methods. The full poten.ial of un.vers.l s.Rs.diagn.s.ics.will likely be realized with the developmen. of approaches.an. devices.capable of effectively detectin. an.lytes.on.various.s.rfaces.as.well as.in.multicompon.n. media. In.addition. the combin.tion.of implan.able or wearable s.Rs.active s.bs.rates.an. remote portable devices.en.bles.real-time diagn.s.ics.that ideally fit the con.ept of pers.n.lized medicin.. In.this.paper, we s.mmarize recen. achievemen.s.in.fabricatin. flexible s.Rs.s.bs.rates.made of cellulos. paper, polymer membran.s. an. textile fibrous.films. Emphas.s.is.placed on.the in.s.tu extraction.an. detection.of various.chemicals.in.real-world s.rfaces.an. complex media us.n. flexible n.n.fibrous.s.Rs.platforms. The poten.ial s.Rs.application. an. future pers.ectives.in.on.s.te diagn.s.ics.are als. dis.us.ed.

关键词： paper electros.un.membran. fabric s.rface-en.an.ed Raman.pectros.opy on.s.te diagn.s.ics s.abbin.

An.lytical an. s.mulation.s.udies.for diode an. triode ion.beam extraction.s.s.ems

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Chin.s. Phys.cs.C 2012年第4期36卷 344-349页

作者： m. m. Abdelrahman.n. I. Bas.l s. G. Zakhary Accelerators.& Ion.s.urces.Departmen. Nuclear Research Center Atomic Energy Authority P.O. Box: 13759 Inchas Atomic Energy Authority

This.work is.con.ern.d with ion.beam dyn.mics.an. compares.the emittan.e to aberration.ratios.of two-an. three-electrode extraction.s.s.ems. The s.udy is.con.ucted with the aid of Vers.on.7 of s.mIOn.3D ray-tracin. s.ftware. The beam depen.en.e on.various.parameters.of the extraction.s.s.ems.is.s.udied an. the n.merical res.lts.lead to qualitative con.lus.on.. Ion.beam characteris.ics.us.n. diode an. triode extraction.s.s.ems.are in.es.igated with the aid of the computer code s.mIOn.3 D, Vers.on.7.0. The diode （two electrode extraction.s.s.em） an. triode （three- electrode extraction. acceleration.deceleration.s.s.em） extraction.s.s.ems.are des.gn.d an. optimized with differen. geometric parameters.of the electrode s.s.em, voltage applied to the extraction.electrode, an. plas.a parameters.in.ide the ion.s.urce chamber, as.well as.by the ion.beam s.ace charge. This.work attempts.to des.ribe the importan.e of the acceleration.deceleration.extraction.s.s.em. It s.ows.that bes.des.an.in.reas. of the beam en.rgy, the ion.beam has.lower emittan.e than.the two-electrode extraction.s.s.em. Ion.beams.of the highes. quality are extracted when.ver the half-an.ular divergen.e is.min.mum for which the pervean.e curren. in.en.ity an. the extraction.gap have optimum value. Kn.win. the electron.temperature of the plas.a is.n.ces.ary to determin. plas.a poten.ial an. the exact beam en.rgy.

关键词： ion.beam emittan.e plas.a men.s.us s.ace charge ion.beam s.mIOn.computer program

The Applicability of Fluid model to Electrical Breakdown.an. Glow Dis.harge modelin. in.Argon

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Chin.s. Phys.cs.Letters 2015年第2期32卷 81-85页

作者： m. n. s.an.ov m. D. Petkovic V. Lj. markovic s. n. s.amen.ovic A. P. Jovan.vic Departmen. of Phys.cs Faculty of Sciences and Mathematics University of Nis Visegradska 33 Nis18001 Serbia Departmen. of Computer s.ien.e Faculty of Sciences and Mathematics University of Nis Visegradska 33 Nig 18001 Serbia

The s.mple fluid model, an.exten.ed fluid model, an. the fluid model with n.n.ocal ion.zation.are applied for the calculation. of s.atic breakdown.voltages. Pas.hen.curves.an. curren.-voltage characteris.ics. The bes. agreemen. with the experimen.al data for the Pas.hen.curve modelin. is.achieved by us.n. the model with variable s.con.ary electron.yield. The modelin. of curren.-voltage characteris.ics.is.performed for differen. in.er-electrode dis.an.es.an. the res.lts.are compared with the experimen.al data. The fluid model with n.n.ocal ion.zation.s.ows.an.excellen. agreemen. for all in.er-electrode dis.an.es. while the exten.ed fluid model with variable electron.tran.port coefficien.s.agrees.well with meas.remen.s.at s.ort in.er-electrode dis.an.es.when.ion.zation.by fas. electron. can.be n.glected.

关键词： PAs.HEn.Back effect ARGOn ELECTRIC curren.s ELECTRIC poten.ial ELECTRODEs

Dyn.mic An.lys.s.of the n.n.Lin.ar Behavior of a Compos.te s.n.wich Beam with a magn.torheological Elas.omer Core

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Acta mechan.ca s.lida s.n.ca 2016年第3期29卷 271-283页

作者： n. Chikh A. n.ur s. Aguib I. Tawfiq Dyn.mic of En.in.s.an. Vibroacous.ic Laboratory M'Hamed Bougara University of Boumerdes Algeria Laboratoire QUARTZ(EA7393) Supmeca 3 rue de Fernand Hainaut 93407 Saint-Ouen Cedex France

This.work deals.with the active con.rol of the vibration. of mechan.cal s.ructures.in.orporatin. magn.torheological elas.omer. The dampin. coefficien. an. s.ear modulus.of the elas.omer in.reas. when.expos.d to a magn.tic field. Compared with the vibration.con.rol where the elas.omer is.perman.n.ly expos.d to a magn.tic field, the con.rol of this.proces. through time reduces.vibration. more effectively. The experimen.al s.udy for the vibration. of a s.n.wich beam filled with an.elas.omer is.con.ucted, followed by a n.merical s.udy us.n. the Abaqus.code. The vibration.dampin. is.foun. to be depen.en. on.the loadin. rate of micro-s.ze ferromagn.tic particles.in.the elas.omer.

关键词： s.n.wich beam magn.torheological elas.omer magn.tic field s.iffn.s. los. factor

Effect of Temperature an. Ion.c Con.en.ration.on.s.lf-As.embled Films.of Chicago s.y Blue

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Chin.s. Phys.cs.Letters 2008年第10期25卷 3732-3734页

作者： D. Dey m. n. Is.am s. A. Hus.ain.D. Bhattacharjee Departmen. of Phys.cs Tripura University Suryamaninagar-799130 Tripura India

We employ a layer-by-layer ads.rption.techn.que for depos.tion.on.s.lid s.bs.rates.of polyion.c films.of Chicago s.y Blue. Film growth was.s.gn.fican. with the in.reas.n. n.mber of layers. Photochemical properties.of thes. films.are in.es.igated for differen. ion.c con.en.ration.. A s.gn.fican. blue s.ift is.obs.rved with the in.reas.n. ion.c s.ren.th of the s.lution. s.gges.in. the formation.of aggregation. Temperature effect s.udies.s.ow s.me preferable reorien.ation.of molecules.in.the film durin. coolin. proces.. mos. remarkable obs.rvation.is.that the abs.rption.in.en.ity is.the highes. for a particular degree of in.lin.tion. Depos.tion.time is.fixed at 15rain.becaus. ads.rption.kin.tics.res.lts.s.ow s.turation.after 15 min.

关键词： the power-law expon.n.s precipitation durative abrupt precipitation.chan.e

n.w s.eel makin. Proces. through Reduction.an. s.n.erin. of Cemen.ite Powder

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材料热处理学报 2004年第5期25卷 76-79页

作者： n. OUCfflDA m. EGAs.IRA K. n.KAs.ImA T. Ts.CHIYAmA s. TAKAKI Departmen. of materials.s.ien.e an. En.in.erin. Kyushu UniversityDepartment of Materials Science and Engineering Kyushu University s.mitomo metal In.us.ries Ltd.Department of Materials Science and Engineering Kyushu UniversityDepartment of Materials Science and Engineering Kyushu UniversityDepartment of Materials Science and Engineering Kyushu University

A n.w s.eel makin. proces. through reduction.an. s.n.erin. treatmen. of cemen.ite powder was.propos.d, an. micros.ructure of the material obtain.d by this.proces. was.examin.d by s.an.in. electron.micros.opy an. EBs. an.lys.s. The cemen.ite powder obtain.d by mechan.cal alloyin. was.compacted un.er high pres.ure up to lOOOmPa, an. then.reduced durin. s.n.erin. in.a hydrogen.(H2) gas.atmos.here at elevated temperatures. The cemen.ite compacts.were completely reduced by the s.n.erin. at 1073K to 1273K for 18ks. The relative den.ity of s.n.ered material became 95% or more when.the temperature was.elevated above 1173K. The s.m obs.rvation.an. EBs. an.lys.s.in.icated that the obtain.d s.eel has.equiaxed ferrite-pearlite s.ructure with grain.s.ze of aroun. s.m an. the crys.allographic orien.ation. of ferrite grain. are ran.omly dis.ributed.

关键词：碳化铁粉末冶金破碎比烧结