ASTM E756-2005(2010) 测量材料减振动特性的标准试验方法

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【英文标准名称】:StandardTestMethodforMeasuringVibration-DampingPropertiesofMaterials
【原文标准名称】:测量材料减振动特性的标准试验方法
【标准号】:ASTME756-2005(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2005
【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】:E33.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:constrained-layer;damping;extensionaldamping;free-layer;lossfactor;sheardamping;shearmodulus;vibration;vibrationdamping;Young'smodulus;Young'smodulus;Damping;Oberstbar;Soundtransmission--buildingmaterials/applications;Vibratio
【摘要】:Themateriallossfactorandmodulusofdampingmaterialsareusefulindesigningmeasurestocontrolvibrationinstructuresandthesoundthatisradiatedbythosestructures,especiallyatresonance.Thistestmethoddeterminesthepropertiesofadampingmaterialbyindirectmeasurementusingdampedcantileverbeamtheory.Byapplyingbeamtheory,theresultantdampingmaterialpropertiesaremadeindependentofthegeometryofthetestspecimenusedtoobtainthem.Thesedampingmaterialpropertiescanthenbeusedwithmathematicalmodelstodesigndampingsystemsandpredicttheirperformancepriortohardwarefabrication.Thesemodelsincludesimplebeamandplateanalogiesaswellasfiniteelementanalysismodels.Thistestmethodhasbeenfoundtoproducegoodresultswhenusedfortestingmaterialsconsistingofonehomogeneouslayer.Insomedampingapplications,adampingdesignmayconsistoftwoormorelayerswithsignificantlydifferentcharacteristics.Thesecomplicateddesignsmusthavetheirconstituentlayerstestedseparatelyifthepredictionsofthemathematicalmodelsaretohavethehighestpossibleaccuracy.1.1Thistestmethodmeasuresthevibration-dampingpropertiesofmaterials:thelossfactor,x03B7;,andYoung''smodulus,E,ortheshearmodulus,G.Accurateoverafrequencyrangeof50to5000Hzandovertheusefultemperaturerangeofthematerial,thismethodisusefulintestingmaterialsthathaveapplicationinstructuralvibration,buildingacoustics,andthecontrolofaudiblenoise.Suchmaterialsincludemetals,enamels,ceramics,rubbers,plastics,reinforcedepoxymatrices,andwoodsthatcanbeformedtocantileverbeamtestspecimenconfigurations.1.2Thisstandarddoesnotpurporttoaddressallthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q10
【国际标准分类号】:91_120_20
【页数】:14P.;A4
【正文语种】:英语