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【英文标准名称】:StandardTestMethodforSpecificOpticalDensityofSmokeGeneratedbySolidMaterials
【原文标准名称】:由固体材料产生烟雾的比光密度的标准试验方法
【标准号】:ASTME662-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E05.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fire;fire-testresponsestandard;smoke;smokechamber;smokedensity;smokeobscuration;solids;specificopticaldensity;Opticaldensity;Smokeanalysis;Smokedensity;Solidphasematerials
【摘要】:Thistestmethodprovidesameansfordeterminingthespecificopticaldensityofthesmokegeneratedbyspecimensofmaterialsandassembliesunderthespecifiedexposureconditions.Valuesdeterminedbythistestarespecifictothespecimenorassemblyintheformandthicknesstestedandarenottobeconsideredinherentfundamentalpropertiesofthematerialtested.Thus,itislikelythatcloselyrepeatableorreproducibleexperimentalresultsarenottobeexpectedfromtestsofagivenmaterialwhenspecimenthickness,density,orothervariablesareinvolved.Thephotometricscaleusedtomeasuresmokebythistestmethodissimilartotheopticaldensityscaleforhumanvision.However,physiologicalaspectsassociatedwithvisionarenotmeasuredbythistestmethod.Correlationwithmeasurementsbyothertestmethodshasnotbeenestablished.Atthepresenttimenobasisisprovidedforpredictingthedensityofsmokegeneratedbythematerialsuponexposuretoheatandflameunderotherfireconditions.Thetestmethodisofacomplexnatureandthedataobtainedaresensitivetovariationswhichinothertestmethodsmightbeconsideredtobeinsignificant(seeSection6).Aprecisionstatementbasedontheresultsofaroundrobintestbyapriordraftversionofthistestmethodisgivenin14.1Inthisprocedure,thespecimensaresubjectedtooneormorespecificsetsoflaboratorytestconditions.Ifdifferenttestconditionsaresubstitutedortheend-useconditionsarechanged,itisnotalwayspossiblebyorfromthistestmethodtopredictchangesinthefire-test-responsecharacteristicsmeasured.Therefore,theresultsarevalidonlyforthefiretestexposureconditionsdescribedinthisprocedure.1.1Thisfire-test-responsestandardcoversdeterminationofthespecificopticaldensityofsmokegeneratedbysolidmaterialsandassembliesmountedintheverticalpositioninthicknessesuptoandincluding1in.(25.4mm).1.2Measurementismadeoftheattenuationofalightbeambysmoke(suspendedsolidorliquidparticles)accumulatingwithinaclosedchamberduetononflamingpyrolyticdecompositionandflamingcombustion.1.3Resultsareexpressedintermsofspecificopticaldensitywhichisderivedfromageometricalfactorandthemeasuredopticaldensity,ameasurementcharacteristicoftheconcentrationofsmoke.1.4Thistestmethodisintendedforuseinresearchanddevelopmentandnotasabasisforratingsforregulatorypurposes.1.5Thisstandardmeasuresanddescribestheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,productsorassembliesunderactualfireconditions.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.7Thevaluesstatedininch-poundunitsaretoberegardedasstandard.Valuesstatedinparenthesesareforinformationonly.
【中国标准分类号】:C80
【国际标准分类号】:13_220_40;17_180_99
【页数】:24P.;A4
【正文语种】:英语