简介：Amonolithichybridfuelcell(MHFC)withanovelconfigurationwasproposedinanefforttoimprovethefuelcellperformanceduringinstantaneouspowerchanges.Amodifieddirectmethanolfuelcell(DMFC)withalayerofhydrousrutheniumdioxide(RuO2·xH2O)sandwichedbetweentheanodecatalystlayerandmembranewasusedtodemonstratetheprincipleoftheMHFC.ExperimentalresultsindicatethattheRuO2·xH2Olayerisequivalenttoaresistor-capacitortransmissionlineandfunctionssimilartoacapacitorinparallelwiththeanodeelectrode.TheimprovementindynamicresponseoftheMHFCwasexperimentallyconfirmedunderstepcurrentchangeandsquarecurrentpulseoperating.TheionicconductivityoftheRuO2·xH2Olayerwasalsoobtained.

简介：Anexperimentfordeterminingthelaser-TIGhybridweldingcharacteristicswascarriedoutinthreekindsofhybridmethods:CO2laser-TIGcoaxialhybrid,CO2laser-TIGparaxialhybridandNd:YAGlaser-TIGparaxialhybrid.TheexperimentalresultsindicatethathybridweldinghastwoweldingmechanismsinCO2laser-TIGhybridwelding:deeppenetrationweldingandheatconductionwelding.Astheeffectofthelaser-inducedkeyhole,thearcrootiscondensed,thecurrentdensityandpenetrationdepthincreasesignificantly,theweldingcharacteristicisapttodeeppenetrationwelding.Whencurrentincreasestosomedegree,thekeyholeinducedbylaserdisappears,whichproducesashallowpenetrationandwidebead.Theweldexhibitsheatconductionweldingcharacteristics.Furthermore,thearcimagesandweldbeadcross-sectionsofthreekindsofhybridmannerswerealsocomparedandanalyzedatdifferentweldingcurrents,whichestablishedthefoundationforunderstandingtheweldingcharacteristicsoflaser-TIGhybridweldingcomprehensively.

简介：Compositesarewidelyappliedtothemanufacturingofaircraftinaviation.Formingoflarge-scalecompositecomponentinaircraftrequiresthecorrespondingmoldwithprecisesize.Thelaser-MIGhybridweldinghasasignificantadvantageinthemanufacturingofInvarmoldforaircraftcomposites.Thispapermainlyintroducestheapplicationofthelaser-MIGhybridwelding,andthedistributionofthermalfieldandflowfieldontheInvaralloylaser-MIGhybridthree-layerweldingisanalyzedanddiscussedspecifically.

简介：Therecenttrendofvehicledesignaimsatcrashsafetyandenvironmentally-friendlyaspect.Forthecrashsafetyaspect,theenergyabsorbingmembersshouldabsorbcollisionenergysufficientlybutfortheenvironmentally-friendlyaspect,thevehiclestructuremustbelightweightinordertoimprovethefuelefficiencyandreducethetailgasemission.Therefore,thelightweightofvehiclemustbeachievedinasecuringsafetystatusofcrash.Analuminumorcarbonfiberreinforcedplastics(CFRP)isrepresentativeoneofthelight-weightmaterials.BasedontherespectivecollapsebehaviorofaluminumandCFRPmember,thecollapsebehaviorofhybridthin-walledmemberwasevaluated.ThehybridmembersweremanufacturedbywrappingCFRPprepregsheetsoutsidethealuminumhollowmembersintheautoclave.BecausetheCFRPisananisotropicmaterialwhosemechanicalproperties,suchasstrengthandelasticity,changewithitsstackingcondition,theeffectsofthestackingconditiononthecollapsebehaviorevaluationofthehybridthin-walledmemberweretested.Thecollapsemodeandenergyabsorptioncapabilityofthehybridthin-walledmemberwereanalyzedwiththechangeofthefiberorientationangleandinterfacenumber.

简介：各向异性的MnBi/NdFeB(0wt%的MnBi内容，20?wt%，40?wt%，60?wt%，80?wt%，并且100?wt%)混合结合的磁铁被用MnBi粉末和再结合(HDDR)NdFeB粉末塑造压缩准备。在房间温度的磁性的大小证明与MnBi内容增加，MnBi/NdFeB混血儿的磁性结合了磁铁都逐渐地减少，当混合磁铁的密度几乎线性地改善时。在293-398的一个温度范围?K，混合磁铁的coercivity温度系数从0.59逐渐地改善?%比较。建模和频率与二低角落频率认为压力消除阀门是一个秒顺序系统是合理的试验性的结果表演。PID控制，死了的乐队赔偿控制和鷸?鷸？？

简介：Plasma-MIG(metalinertgasarcwelding)hybridweldingof6061aluminumalloywith6mmthicknessusingER5356weldingwirewascarriedout.Themicrostructuresandmechanicalpropertiesoftheweldedjointwereinvestigatedbyopticalmicroscopy,X-raydiffraction(XRD),energydispersivespectroscopy(EDS),tensiletest,hardnesstestandscanningelectronmicroscope(SEM)wereusedtojudgethetypeoftensilefracture.Theresultsshowedthatthetensilestrengthofweldedjointwas142MPawhichwas53.6%ofthestrengthofthebasemetal.Theweldingseamzonewascharacterizedbydendriticstructure.Inthefusionzone,thecolumnargrainsexistedatonesideoftheweldingseam.Thefibrousorganizationwasfoundinthebasemetal,andalsointheheataffectedzone(HAZ)wheretherecrystallizationoccurred.TheHAZwastheweakestpositionoftheweldedjointduetothecoarseningofMg_2Siphase.Thetypeoftensilefracturewasductilefracture.

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简介：WeldingresearchofA6N01S-T5aluminumalloyprofileforhigh-speedtrainwasdonebyusinglaser-MIGhybridweldingandMIGweldingindividually.Andtheweldappearance,weldingdistortion,mechanicalpropertiesofthejointsandmicrostructureswereanalyzed.Thetestresultsdemonstratedthathigh-efficientweldingfortheprofilecanbeachievedbyusinglaser-MIGhybridwelding,thespeedofwhichcanbeover3.0m/min.Theprocessinghadagoodgapbridgingability，evenifthegapofthebuttjointwasupto2.0mm,agoodweldappearancecanalsobegot.Whilethehybridweldingspeedwasgreaterthan2.5m/min,theweldingdistortionofthelaser-tandemMIGhybridjointswasjustabout33%ofthatoftheMIGjoints,buttheweldingefficiencywasover3timesofMIGwelding.Andtensilestrengthofthehybridjointswas85%ofthatofA6N01S-T5basemetal,9%higherthanthatoftheMIGjoints.Fatiguepropertieswastestedindividuallywithpulsedtensilefatiguemethodintheconditionof1×107lifetime.Thetestresultsdemonstratedthatthefatiguestrengthofthejointswasalittlelowerthanthatofbasematerial,whichcouldbeupto115MPa.Butthefatiguestrengthofhybridweldingjointswas107.5MPa,whichwas23%higherthan87MPaofMIGweldingjoints.

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