ASTM E1004-2002 用电磁(涡流)法测定电导率的标准实施规程
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【英文标准名称】:StandardPracticeforDeterminingElectricalConductivityUsingtheElectromagnetic(Eddy-Current)Method
【原文标准名称】:用电磁(涡流)法测定电导率的标准实施规程
【标准号】:ASTME1004-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:eddy-current;electricalconductivity;metalsorting;nondestructivetesting
【摘要】:Absoluteprobecoilmethods,whenusedinconjunctionwithreferencestandardsofknownvalue,provideameansfordeterminingtheelectricalconductivityofnonmagneticmaterials.Electricalconductivityofasamplecanbeusedasameansofdetermining:(1)typeofmetaloralloy,(2)typeofheattreatment(foraluminumthisevaluationshouldbeusedinconjunctionwithahardnessexamination),(3)agingofthealloy,(4)effectsofcorrosion,and(5)heatdamage.1.1Thispracticecoversaprocedurefordeterminingtheelectricalconductivityofnonmagneticmetalsusingtheelectromagnetic(eddy-current)method.Theprocedurehasbeenwrittenprimarilyforusewithcommerciallyavailabledirectreadingelectricalconductivityinstruments.Generalpurposeeddy-currentinstrumentsmayalsobeusedforelectricalconductivitymeasurementsbutwillnotbeaddressedinthispractice.1.2Thispracticeisapplicabletometalsthathaveeitheraflatorslightlycurvedsurfaceandincludesmetalswithorwithoutathinnonconductivecoating.1.3Eddy-currentdeterminationsofelectricalconductivitymaybeusedinthesortingofmetalswithrespecttovariablessuchastypeofalloy,aging,colddeformation,heattreatment,effectsassociatedwithnon-uniformheatingoroverheating,andeffectsofcorrosion.Theusefulnessoftheexaminationsofthesepropertiesisdependentontheamountofelectricalconductivitychangecausedbyachangeinthespecificvariable.1.4Electricalconductivity,whenevaluatedwitheddy-currentinstruments,isusuallyexpressedasapercentageoftheconductivityoftheInternationalAnnealedCopperStandard(IACS).TheconductivityoftheAnnealedCopperStandardisdefinedtobe0.58108S/m(100%IACS)at20176;C.1.5ThevaluesstatedinSIunitsareregardedasstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A55
【国际标准分类号】:17_220_20(MEASUREMENTOFELECTRICALANDMAGNETICQUANTITIES)
【页数】:4P.;A4
【正文语种】:
【原文标准名称】:用电磁(涡流)法测定电导率的标准实施规程
【标准号】:ASTME1004-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E07.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:eddy-current;electricalconductivity;metalsorting;nondestructivetesting
【摘要】:Absoluteprobecoilmethods,whenusedinconjunctionwithreferencestandardsofknownvalue,provideameansfordeterminingtheelectricalconductivityofnonmagneticmaterials.Electricalconductivityofasamplecanbeusedasameansofdetermining:(1)typeofmetaloralloy,(2)typeofheattreatment(foraluminumthisevaluationshouldbeusedinconjunctionwithahardnessexamination),(3)agingofthealloy,(4)effectsofcorrosion,and(5)heatdamage.1.1Thispracticecoversaprocedurefordeterminingtheelectricalconductivityofnonmagneticmetalsusingtheelectromagnetic(eddy-current)method.Theprocedurehasbeenwrittenprimarilyforusewithcommerciallyavailabledirectreadingelectricalconductivityinstruments.Generalpurposeeddy-currentinstrumentsmayalsobeusedforelectricalconductivitymeasurementsbutwillnotbeaddressedinthispractice.1.2Thispracticeisapplicabletometalsthathaveeitheraflatorslightlycurvedsurfaceandincludesmetalswithorwithoutathinnonconductivecoating.1.3Eddy-currentdeterminationsofelectricalconductivitymaybeusedinthesortingofmetalswithrespecttovariablessuchastypeofalloy,aging,colddeformation,heattreatment,effectsassociatedwithnon-uniformheatingoroverheating,andeffectsofcorrosion.Theusefulnessoftheexaminationsofthesepropertiesisdependentontheamountofelectricalconductivitychangecausedbyachangeinthespecificvariable.1.4Electricalconductivity,whenevaluatedwitheddy-currentinstruments,isusuallyexpressedasapercentageoftheconductivityoftheInternationalAnnealedCopperStandard(IACS).TheconductivityoftheAnnealedCopperStandardisdefinedtobe0.58108S/m(100%IACS)at20176;C.1.5ThevaluesstatedinSIunitsareregardedasstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A55
【国际标准分类号】:17_220_20(MEASUREMENTOFELECTRICALANDMAGNETICQUANTITIES)
【页数】:4P.;A4
【正文语种】:
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