ANSI/ASTM F2153-2002 背负能力测量标准
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【英文标准名称】:StandardfortheMeasurementofBackpackCapacity
【原文标准名称】:背负能力测量标准
【标准号】:ANSI/ASTMF2153-2002
【标准状态】:作废
【国别】:美国
【发布日期】:2002
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Capacity;Materialstesting;Measurement;Measurement,testingandinstruments;Measuringtechniques;Metrology
【摘要】:
【中国标准分类号】:A25
【国际标准分类号】:17_020
【页数】:
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringAcousticalandAirflowPerformanceofDuctLinerMaterialsandPrefabricatedSilencers
【原文标准名称】:测定导管衬里材料和预制消音器的声及气流特性的标准试验方法
【标准号】:ASTME477-2006a
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:E33.08
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:声学;空气流动;建筑声学;建筑;材料;管道;消声器;试验
【英文主题词】:airflowgeneratednoise;airflowperformance;ductlinermaterials;insertionloss;prefabricatedelbowsilencers;prefabricatedstraightsilencers
【摘要】:Specimenstestedusingthisstandard,forexample,ductsilencers,areusedtocontrolsoundpropagationthroughventilationducts.Theresultsgatheredfromtestingspecimenstothisstandardcanbeusedtoestimatethereductioninfansoundlevelsinductedairflowsystemscausedbyincludingasoundattenuatingdeviceinthesystem.Thedevicecanbeacomponentinasource-path-receiveranalysiswherecalculationsareperformedtodeterminetheresultantsoundlevelinanoccupiedspace.Properselectionofasoundattenuatingdevicecanenableadesignertoachievein-spacebackgroundnoisecriteria.Theinsertionlossofasilencerisamatterofdegree,andvarieswithfrequencyandwiththedirectionandspeedofairflow.Becausesilencerspartiallyobstructtheairpathandprovideresistancetoairflow,twoothereffectsmustbequantified:pressuredropandairflow-generatednoise.Bothincreasewithincreasingairspeeds;thusdataarerequiredforseveralairflowstocorrectlycharacterizeperformance.Theaerodynamicresultsfromtestingspecimenstothestandardcanbeusedasinformationforthesystemdesignengineertodeterminetheamountofstaticpressuredropresistancetobeovercomebythesystemfan(s).Guidelinesforappropriatemaximumallowablepressuredropforasoundattenuatingelementhavebeenestablishedinthedesigncommunityandarebasedontheproceduresdescribedherein.Asstatedpreviouslyin1.5ofthistestmethod,theactualperformanceofasoundattenuatingdeviceasinstalledinanairductsystemmaybesignificantlydifferentthanreportedbasedonthetestprocedureherein.Thisstandarddoesnotprovideguidancetotheuseronthesesystemeffects.Silencersareoftendesignedtobeusedunderconditionswhichdonotduplicatethetestset-upsofthisstandard.Mock-upsandspecializedtestset-upstodetermineperformanceofsoundattenuatingdevicesinnon-standardconfigurationsmaybebasedonthistestmethodbutcannotbeconsideredtobeinfullconformancewiththistestmethod.SeeAnnexA2forfurtherinformationregardingsuchtests.1.1Thistestmethodcoversthelaboratorytestingofsomeoftheacousticalpropertiesofsoundattenuatingdevicesincludingductlinermaterials,integralducts,andin-ductabsorptivestraightandelbowsilencersusedintheventilationsystemsofbuildings.Proceduresaredescribedforthemeasurementofacousticalinsertionloss,airflowgeneratednoise,andpressuredropasafunctionofairflow.1.2Excludedfromthescopearereactivemufflersandthosedesignedforusesotherthaninventilationsystems,suchasautomobilemufflers.1.3Thistestmethodincludesaprovisionforasimulatedsemi-reflectiveplenumtofitaroundthin-walledductandsilencertestspecimens,sincetheacousticalenvironmentsaroundsuchthin-walledspecimenscanaffectthemeasuredinsertionloss.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.4Thismethodteststheperformanceofthespecimeninwell-definedandcontrolledconditions.Ifthespecimenisinstalledinthefieldinanydifferentmanner,theresultsmaybedifferent.Thisstandarddoesnotprovideestimatingproceduresfordeterminingtheactualinstalledperformanceofthespecimenfieldconditions.
【中国标准分类号】:P31
【国际标准分类号】:91_120_20
【页数】:11P.;A4
【正文语种】:
【英文标准名称】:StandardTestMethodforSmallPunchTestingofUltra-HighMolecularWeightPolyethyleneUsedinSurgicalImplants
【原文标准名称】:外科植入物用超高分子重量聚乙烯的小型打孔器检测的标准试验方法
【标准号】:ASTMF2183-2002
【标准状态】:现行
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:C35
【国际标准分类号】:11_040_40
【页数】:4P;A4
【正文语种】:英语
