基本信息
| 标准名称： | 变径直通管接头 |
| 中标分类： |
航空、航天 >>
航空器与航天器零部件 >>
管件、卡箍、密封件 |
| 替代情况： | HB 4-7-1983;被HB 4-7-2002代替 |
| 发布日期： | 1999-03-12 |
| 实施日期： | 1999-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 航空 航天 航空器与航天器零部件 管件 卡箍 密封件
【英文标准名称】:StandardTestMethodforRadiantHeatResistanceofFlameResistantClothingMaterialswithContinuousHeating
【原文标准名称】:用连续加热测定防火服装材料的防热辐射的标准试验方法
【标准号】:ASTMF1939-2008
【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】:F23.80
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:apparel;flameresistance;protectiveclothing;radiantheatprotection;radiantheatresistance;Burningcharacteristics--textilematerials/products;Flame-resistant(FR)clothing/materials;Performance--protectiveclothing/materialsapplications;Pr
【摘要】:Thistestmethodisintendedforthedeterminationoftheradiantheatresistancevalueofamaterial,acombinationofmaterials,oracomparisonofdifferentmaterialsusedinflameresistantclothingforworkersexposedtoradiantthermalhazards.Thistestmethodevaluatesamaterial''sheattransferpropertieswhenexposedtoacontinuousandconstantradiantheatsource.Airmovementatthefaceofthespecimenandaroundthecalorimetercanaffectthemeasuredheattransferredduetoforcedconvectiveheatlosses.Minimizingtheairmovementaroundthespecimenandtestapparatuswillaidintherepeatabilityoftheresults.Thistestmethodmaintainsthespecimeninastatic,verticalpositionanddoesnotinvolvemovement,exceptthatresultingfromtheexposure.Thistestmethodspecifiestwostandardsetsofexposureconditions:21kW/m2[0.5cal/cm2s]and84kW/m2[2.0cal/cm2s].Eithercanbeused.5.4.1Ifadifferentsetofexposureconditionsisused,itislikelythatdifferentresultswillbeobtained.5.4.2Theoptionaluseofotherconditionsrepresentativeoftheexpectedhazard,inadditiontothestandardsetofexposureconditions,ispermitted.However,theexposureconditionsusedmustbereportedwiththeresultsalongwithadeterminationoftheexposureenergylevelstability.Thistestmethoddoesnotpredictskinburninjuryfromthestandardizedradiantheatexposure.Note48212;SeeAppendixX4foradditionalinformationregardingthistestmethodandpredictedskinburninjury.1.1Thistestmethodratesthenon-steadystatethermalresistanceorinsulatingcharacteristicsofflameresistantclothingmaterialssubjectedtoacontinuous,standardizedradiantheatexposure.1.1.1Thistestmethodisnotapplicabletoclothingmaterialsthatarenotflameresistant.Note18212;Thedeterminationofaclothingmaterial''sflameresistanceshallbemadepriortotestinganddoneinaccordancewiththeapplicableperformancestandard,specificationstandard,orboth,fortheclothingmaterial''send-use.1.1.2Thistestmethoddoesnotpredictskinburninjuryfromthestandardizedradiantheatexposureasitdoesnotaccountforthethermalenergycontainedinthetestspecimenaftertheexposurehasceased.Note28212;SeeAppendixX4foradditionalinformationregardingthistestmethodandpredictedskinburninjury.1.2Thistestmethodisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsaremathematicalconversionstoinch-poundorotherunitsthatarecommonlyusedforthermaltesting.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C73
【国际标准分类号】:13_340_10
【页数】:12P.;A4
【正文语种】:英语