NF S31-030-3-2002 声学和振动.弹性元件的振动声传输特性的试验室测量.第3部分:平动用弹性支架动态劲度测定的间接方法
时间:2024-05-10 10:32:03 来源: 标准资料网 作者：标准资料网 阅读：8597
【英文标准名称】:Acousticsandvibration-Laboratorymeasurementofvibro-acoustictransferpropertiesofresilientelements-Part3:indirectmethodfordeterminationofthedynamicstiffnessofresilientsupportsfortranslatorymotion.
【原文标准名称】:声学和振动.弹性元件的振动声传输特性的试验室测量.第3部分:平动用弹性支架动态劲度测定的间接方法
【标准号】:NFS31-030-3-2002
【标准状态】:现行
【国别】:法国
【发布日期】:2002-10-01
【实施或试行日期】:2002-10-05
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:测量技术;机械性能;振动的传输;定义;定义;传输;频率;声学;实验室试验;隔振;振动;声学测量
【英文主题词】:
【摘要】:
【中国标准分类号】:N65
【国际标准分类号】:17_140_01
【页数】:47P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodforYoung''sModulus,ShearModulus,andPoisson''sRatioForCeramicWhitewaresbyResonance
【原文标准名称】:用共振法测定卫生陶瓷的杨氏模量、切变模量和泊松比的标准试验方法
【标准号】:ASTMC848-1988(2006)
【标准状态】:现行
【国别】:
【发布日期】:1988
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C21.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:工业瓷器;弹性模量;泊松比;剪切模量;共振;陶瓷;试验
【英文主题词】:cermaicwhitewares;Poisson'sratio;resonance;shearmodulus;Young'smodulus
【摘要】:Thistestsystemhasadvantagesincertainrespectsovertheuseofstaticloadingsystemsinthemeasurementofceramicwhitewares.3.1.1Onlyminutestressesareappliedtothespecimen,thusminimizingthepossibilityoffracture.3.1.2Theperiodoftimeduringwhichstressisappliedandremovedisoftheorderofhundredsofmicroseconds,makingitfeasibletoperformmeasurementsattemperatureswheredelayedelasticandcreepeffectsproceedonamuch-shortenedtimescale.Thistestmethodissuitablefordetectingwhetheramaterialmeetsspecifications,ifcognizanceisgiventooneimportantfact:ceramicwhitewarematerialsaresensitivetothermalhistory.Therefore,thethermalhistoryofatestspecimenmustbeknownbeforethemodulicanbeconsideredintermsofspecifiedvalues.Materialspecificationsshouldincludeaspecificthermaltreatmentforalltestspecimens.1.1Thistestmethodcoversthedeterminationoftheelasticpropertiesofceramicwhitewarematerials.Specimensofthesematerialspossessspecificmechanicalresonancefrequencieswhicharedefinedbytheelasticmoduli,density,andgeometryofthetestspecimen.Thereforetheelasticpropertiesofamaterialcanbecomputedifthegeometry,density,andmechanicalresonancefrequenciesofasuitabletestspecimenofthatmaterialcanbemeasured.Young''smodulusisdeterminedusingtheresonancefrequencyintheflexuralmodeofvibration.Theshearmodulus,ormodulusofrigidity,isfoundusingtorsionalresonancevibrations.Young''smodulusandshearmodulusareusedtocomputePoisson''sratio,thefactoroflateralcontraction.1.2Allceramicwhitewarematerialsthatareelastic,homogeneous,andisotropicmaybetestedbythistestmethod.Thistestmethodisnotsatisfactoryforspecimensthathavecracksorvoidsthatrepresentinhomogeneitiesinthematerial;neitherisitsatisfactorywhenthesematerialscannotbepreparedinasuitablegeometry.Note1Elasticheremeansthatanapplicationofstresswithintheelasticlimitofthatmaterialmakingupthebodybeingstressedwillcauseaninstantaneousanduniformdeformation,whichwillceaseuponremovalofthestress,withthebodyreturninginstantlytoitsoriginalsizeandshapewithoutanenergyloss.Manyceramicwhitewarematerialsconformtothisdefinitionwellenoughthatthistestismeaningful.Note2Isotropicmeansthattheelasticpropertiesarethesameinalldirectionsinthematerial.1.3Acryogeniccabinetandhigh-temperaturefurnacearedescribedformeasuringtheelasticmoduliasafunctionoftemperaturefrom195to1200C.1.4Modificationofthetestforuseinqualitycontrolispossible.Arangeofacceptableresonancefrequenciesisdeterminedforapiecewithaparticulargeometryanddensity.Anyspecimenwithafrequencyresponsefallingoutsidethisfrequencyrangeisrejected.Theactualmodulusofeachpieceneednotbedeterminedaslongasthelimitsoftheselectedfrequencyrangeareknowntoincludetheresonancefrequencythatthepiecemustpossessifitsgeometryanddensityarewithinspecifiedtolerances.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q33
【国际标准分类号】:81_060_20
【页数】:7P.;A4
【正文语种】:
【英文标准名称】:Firefightingandrescueservicevehicles-Permanentlyinstalledequipment-Part3:Safetyandperformance;GermanversionEN1846-3:2002
【原文标准名称】:消防和援救运载工具.永久性设备.第3部分:安全性和性能
【标准号】:EN1846-3-2002
【标准状态】:现行
【国别】:
【发布日期】:2003-04
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:操作说明书;消防队;普通灭火容器;用户信息;运载工具;特点;装置;性能要求;灭火剂;给水设施;作标记;消防车;消防;消防设备;保护措施;安全;规范(验收);人类工效学;性能;水枪;设备;定义;危害;安全要求;控制
【英文主题词】:
【摘要】:消防和援救运载工具.永久性设备.第3部分:安全性和性能
【中国标准分类号】:T51
【国际标准分类号】:13_220_10
【页数】:34P;A4
【正文语种】:英语