ASTM F312-2008 膜滤器上航空流体中颗粒微观大小的测定及计数的标准试验方法
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【英文标准名称】:StandardTestMethodsforMicroscopicalSizingandCountingParticlesfromAerospaceFluidsonMembraneFilters
【原文标准名称】:膜滤器上航空流体中颗粒微观大小的测定及计数的标准试验方法
【标准号】:ASTMF312-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E21.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aerospaceenvironments;aerospacefluids;aerospacegases;aerospacesurfaces;membranefilter;microscopicalcountingparticles;microscopicalsizingparticles;particulatemattercontamination;Aerospaceparticulatecontamination;Contamination--ae
【摘要】:Reportedparticlesizemeasurementisafunctionofboththeactualparticledimensionandshapefactoraswellastheparticularphysicalorchemicalpropertiesoftheparticlebeingmeasured.Cautionisrequiredwhencomparingdatafrominstrumentsoperatingondifferentphysicalorchemicalparametersorwithdifferentparticlesizemeasurementranges.Sampleacquisition,handlingandpreparationcanalsoaffectthereportedparticlesizeresults.1.1Thesetestmethodscoverthedeterminationofthesizedistributionandquantityofparticulatemattercontaminationfromaerospacefluidsisolatedonamembranefilter.Themicroscopicaltechniquesdescribedmayalsobeappliedtootherproperlypreparedsamplesofsmallparticles.Twotestmethodsaredescribedforsizingparticlesasfollows:1.1.1TestMethodA8212;Particlesizesaremeasuredasthediameterofacirclewhoseareaisequaltotheprojectedareaoftheparticle.1.1.2TestMethodB8212;Particlesizesaremeasuredbytheirlongestdimension.1.2Thetestmethodsareintendedforapplicationtoparticlecontaminationdeterminationofaerospacefluids,gases,surfaces,andenvironments.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thesetestmethodsdonotprovideforsizingparticlessmallerthan5x03BC;m.Note18212;Resultsofthesemethodsaresubjecttovariablesinherentinanystatisticalmethod.Theuseofthesemethodsasastandardforinitiallyestablishinglimitsshouldbeavoidedunlessampletolerancesarepermissible.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:V04
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语
【原文标准名称】:膜滤器上航空流体中颗粒微观大小的测定及计数的标准试验方法
【标准号】:ASTMF312-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:E21.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aerospaceenvironments;aerospacefluids;aerospacegases;aerospacesurfaces;membranefilter;microscopicalcountingparticles;microscopicalsizingparticles;particulatemattercontamination;Aerospaceparticulatecontamination;Contamination--ae
【摘要】:Reportedparticlesizemeasurementisafunctionofboththeactualparticledimensionandshapefactoraswellastheparticularphysicalorchemicalpropertiesoftheparticlebeingmeasured.Cautionisrequiredwhencomparingdatafrominstrumentsoperatingondifferentphysicalorchemicalparametersorwithdifferentparticlesizemeasurementranges.Sampleacquisition,handlingandpreparationcanalsoaffectthereportedparticlesizeresults.1.1Thesetestmethodscoverthedeterminationofthesizedistributionandquantityofparticulatemattercontaminationfromaerospacefluidsisolatedonamembranefilter.Themicroscopicaltechniquesdescribedmayalsobeappliedtootherproperlypreparedsamplesofsmallparticles.Twotestmethodsaredescribedforsizingparticlesasfollows:1.1.1TestMethodA8212;Particlesizesaremeasuredasthediameterofacirclewhoseareaisequaltotheprojectedareaoftheparticle.1.1.2TestMethodB8212;Particlesizesaremeasuredbytheirlongestdimension.1.2Thetestmethodsareintendedforapplicationtoparticlecontaminationdeterminationofaerospacefluids,gases,surfaces,andenvironments.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thesetestmethodsdonotprovideforsizingparticlessmallerthan5x03BC;m.Note18212;Resultsofthesemethodsaresubjecttovariablesinherentinanystatisticalmethod.Theuseofthesemethodsasastandardforinitiallyestablishinglimitsshouldbeavoidedunlessampletolerancesarepermissible.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:V04
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:英语
下载地址: 点击此处下载
