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外文翻译--磁流变液的性能与应用 英文版.pdf

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外文翻译--磁流变液的性能与应用 英文版.pdf

COPYRIGHTBYINTERNATIONALOCSCOWORLDPRESSALLRIGHTSRESERVED2006VOLUME18ISSUE12SEPTEMBER–OCTOBER2006OFACHIEVEMENTSINMATERIALSANDMANUFACTURINGENGINEERINGSHORTPAPER127PROPERTIESANDAPPLICATIONOFMAGNETORHEOLOGICALFLUIDSMKCIUKA,RTURCZYNBADIVISIONOFNANOCRYSTALLINEANDFUNCTIONALMATERIALSANDSUSTAINABLEPROECOLOGICALTECHNOLOGIES,INSTITUTEOFENGINEERINGMATERIALSANDBIOMATERIALS,SILESIANUNIVERSITYOFTECHNOLOGY,ULKONARSKIEGO18A,44100GLIWICE,POLANDBDEPARTMENTOFPHYSICALCHEMISTRYANDTECHNOLOGYOFPOLYMERS,SILESIANUNIVERSITYOFTECHNOLOGYULMARCINASTRZODY9,44100GLIWICE,POLANDCORRESPONDINGAUTHOREMAILADDRESSMONIKAKCIUKPOLSLPLRECEIVED15032006;ACCEPTEDINREVISEDFORM30042006MATERIALSABSTRACTPURPOSETHISPAPERPRESENTSBASICPROPERTIESOFTHEMAGNETORHEOLOGICALFLUIDSMRANDTHEIRDEVELOPMENTINRECENTYEARSAVARIETYOFSTILLGROWINGPRACTICALAPPLICATIONSINMECHANICALDEVICESAREPRESENTEDDESIGN/METHODOLOGY/APPROACHTHETHEORETICALRESEARCHRESULTSOFTHEPROPERTIESANDAPPLICATIONSOBTAINEDINTHEPASTDECADESANDPROGRESSEDINRECENTYEARSAREREVIEWEDFINDINGSITISVERYCLEARLYANDWELLUNDERSTOODFROMTHEPRESENTEDPAPERTHATREPLACEMENTOFTHETRADITIONALDEVICESWITHACTIVE,SMARTSYSTEMBETTERADAPTEDTOTHEENVIRONMENTSTIMULUSARENECESSARYMANYOFTHEMWILLINCLUDEMRFLUIDSASACTIVECOMPONENTRESEARCHLIMITATIONS/IMPLICATIONSMRFLUIDSWITHEXCELLENTPROPERTIESCANBEAPPLIEDINVARIOUSFIELDSOFCIVILENGINEERING,SAFETYENGINEERING,TRANSPORTATIONANDLIFESCIENCETHEYOFFERANOUTSTANDINGCAPABILITYOFACTIVECONTROLOFMECHANICALPROPERTIESPRACTICALIMPLICATIONSAVERYUSEFULMATERIALFORTHEENGINEERSENGAGEDINTHEDESIGNOFBRAKES,DAMPERS,CLUTCHESANDSHOCKABSORBERSSYSTEMSORIGINALITY/VALUETHISARTICLEDESCRIBESANUPTODATEMRMATERIALSDEVELOPMENTANDTHEIRAPPLICATIONINCIVILENGINEERINGTHEADVANTAGEOFTHESMARTSYSTEMSOVERNOWADAYSSOLUTIONSBECOMESTHEDIRECTIONOFTHERESEARCHESANDDESIGNINGOF21STCENTURYDEVICESKEYWORDSSMARTMATERIALS;MAGNETORHEOLOGICALMATERIALS;MAGNETICPROPERTIES;SHEARSTRESS1INTRODUCTIONSCIENCEANDTECHNOLOGYHAVEMADEAMAZINGDEVELOPMENTSINTHEDESIGNOFELECTRONICSANDMACHINERYUSINGSTANDARDMATERIALS,WHICHDONOTHAVEPARTICULARLYSPECIALPROPERTIESIESTEEL,ALUMINUM,GOLDIMAGINETHERANGEOFPOSSIBILITIES,WHICHEXISTFORSPECIALMATERIALSTHATHAVEPROPERTIESSCIENTISTSCANMANIPULATESOMESUCHMATERIALSHAVETHEABILITYTOCHANGESHAPEORSIZESIMPLYBYADDINGALITTLEBITOFHEAT,ORTOCHANGEFROMALIQUIDTOASOLIDALMOSTINSTANTLYWHENNEARAMAGNET;THESEMATERIALSARECALLEDSMARTMATERIALSSMARTMATERIALSHAVEONEORMOREPROPERTIESTHATCANBEDRAMATICALLYALTEREDMOSTEVERYDAYMATERIALSHAVEPHYSICALPROPERTIES,WHICHCANNOTBESIGNIFICANTLYALTERED;FOREXAMPLEIFOILISHEATEDITWILLBECOMEALITTLETHINNER,WHEREASASMARTMATERIALWITHVARIABLEMAYTURNFROMALIQUIDSTATEWHICHFLOWSEASILYTOASOLIDEACHINDIVIDUALTYPEOFSMARTMATERIALHASADIFFERENTPROPERTYWHICHCANBESIGNIFICANTLYALTERED,SUCHASVISCOSITY,VOLUMEORCONDUCTIVITYTHEPROPERTYTHATCANBEALTEREDDETERMINESWHATTYPEOFAPPLICATIONSTHESMARTMATERIALCANBEUSEDFOR1INTRODUCTIONSHORTPAPER128JOURNALOFACHIEVEMENTSINMATERIALSANDMANUFACTURINGENGINEERINGMKCIUK,RTURCZYNVOLUME18ISSUE12SEPTEMBER–OCTOBER2006VARIETIESOFSMARTMATERIALSALREADYEXIST,ANDAREBEINGRESEARCHEDEXTENSIVELYTHESEINCLUDEPIEZOELECTRICMATERIALS,MAGNETORHEOSTATICMATERIALS,ELECTRORHEOSTATICMATERIALS,ANDSHAPEMEMORYALLOYSSOMEEVERYDAYITEMSAREALREADYINCORPORATINGSMARTMATERIALSCOFFEEPOTS,CARS,GLASSESANDTHENUMBEROFAPPLICATIONSFORTHEMISGROWINGSTEADILYMAGNETORHEOLOGICALMATERIALSFLUIDSMRAREACLASSOFSMARTMATERIALSWHOSERHEOLOGICALPROPERTIESEGVISCOSITYMAYBERAPIDLYVARIEDBYAPPLYINGAMAGNETICFIELDUNDERINFLUENCEOFMAGNETICFIELDTHESUSPENDEDMAGNETICPARTICLESINTERACTTOFORMASTRUCTURETHATRESISTSSHEARDEFORMATIONORFLOWTHISCHANGEINTHEMATERIALAPPEARSASARAPIDINCREASEINAPPARENTVISCOSITYORINTHEDEVELOPMENTOFASEMISOLIDSTATEADVANCESINTHEAPPLICATIONOFMRMATERIALSAREPARALLELTOTHEDEVELOPMENTOFNEW,MORESOPHISTICATEDMRMATERIALSWITHBETTERPROPERTIESANDSTABILITYMANYSMARTSYSTEMSANDSTRUCTURESWOULDBENEFITFROMTHECHANGEINVISCOSITYOROTHERMATERIALPROPERTIESOFMRNOWADAYS,THESEAPPLICATIONSINCLUDEBRAKES,DAMPERS,CLUTCHESANDSHOCKABSORBERSSYSTEMS2PROPERTIESOFMAGNETORHEOLOGICALFLUIDSTYPICALMAGNETORHEOLOGICALFLUIDSARETHESUSPENSIONSOFMICRONSIZED,MAGNETIZABLEPARTICLESMAINLYIRONSUSPENDEDINANAPPROPRIATECARRIERLIQUIDSUCHASMINERALOIL,SYNTHETICOIL,WATERORETHYLENEGLYCOLTHECARRIERFLUIDSERVESASADISPERSEDMEDIUMANDENSURESTHEHOMOGENEITYOFPARTICLESINTHEFLUIDAVARIETYOFADDITIVESSTABILIZERSANDSURFACTANTSAREUSEDTOPREVENTGRAVITATIONALSETTLINGANDPROMOTESTABLEPARTICLESSUSPENSION,ENHANCELUBRICITYANDCHANGEINITIALVISCOSITYOFTHEMRFLUIDSTHESTABILIZERSSERVETOKEEPTHEPARTICLESSUSPENDEDINTHEFLUID,WHILSTTHESURFACTANTSAREADSORBEDONTHESURFACEOFTHEMAGNETICPARTICLESTOENHANCETHEPOLARIZATIONINDUCEDINTHESUSPENDEDPARTICLESUPONTHEAPPLICATIONOFAMAGNETICFIELDTABLE1SUMMARYOFTHEPROPERTIESOFMRFLUIDS1PROPERTYTYPICALVALUEINITIALVISCOSITY0,2–0,3PASAT25OCDENSITY3–4G/CM3MAGNETICFIELDSTRENGTH150–250KA/MYIELDPOINT2O50–100KPAREACTIONTIMEFEWMILLISECONDSTYPICALSUPPLYVOLTAGEANDCURRENTINTENSITY2–25V,1–2AWORKTEMPERATURE50DO150OCTYPICALLY,THEDIAMETEROFTHEMAGNETIZABLEPARTICLESRANGEFROM3TO5MICRONSFUNCTIONALMRFLUIDSMAYBEMADEWITHLARGERPARTICLES,HOWEVER,STABLESUSPENSIONOFPARTICLESBECOMESINCREASI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