【英文标准名称】:StandardTestMethodforMeasurementofAirborneSoundAttenuationbetweenRoomsinBuildings
【原文标准名称】:建筑物内部空间中空气声隔声测量的标准试验方法
【标准号】:ASTME336-2009
【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】:E33.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airbornesoundtransmissionloss;apparentsoundtransmissionclass;apparenttransmissionloss;fieldsoundtransmissionclass;fieldtransmissionloss;flankingtransmission;noiseisolationclass;noisereduction;normalizednoiseisolationclass;
【摘要】:Themainpartofthisstandardusesproceduresoriginallydevelopedforlaboratorymeasurementsofthetransmissionlossofpartitions.Theseproceduresassumethattheroomsinwhichthemeasurementsaremadehaveasoundfieldthatreasonablyapproximatesadiffusefield.Soundpressurelevelsinsuchroomsarereasonablyuniformthroughouttheroomandaveragelevelsvaryinverselywiththelogarithmoftheroomsoundabsorption.Notallroomswillsatisfytheseconditions.Practicalexperienceandcontrolledstudies(1)haveshownthatthetestmethodisapplicabletosmallerspacesnormallyusedforworkorliving,suchasroomsinmulti-familydwellings,hotelguestrooms,meetingrooms,andofficeswithvolumeslessthan150cubicmeters.ThemeasuresappropriateforsuchspacesareNR,NNR,andATL.ThecorrespondingsinglenumberratingsareNIC,NNICandASTC.TheATLandASTCmaybemeasuredbetweenlargerspacesthatmeetalimitationonabsorptioninthespacestoprovideuniformsounddistribution.AnnexA2wasdevelopedforuseinspacesthatareverylarge(volumeof150m3orgreater).Soundpressurelevelsduringtestingcanvarymarkedlyacrosslargeroomssothatthedegreeofisolationcanvarystronglywithdistancefromthecommon(separating)partition.Thisprocedureevaluatestheisolationobservednearthepartition.TheappropriatemeasureisNR,andtheappropriatesinglenumberratingisNIC.Itissometimesnecessarytodemonstratethatthesoundinsulationofapartitionmeetsorexceedsaspecificcriterion.AnnexA1providesadditionalrequirements,anddescribeshowshieldingprocedurescanbeusedtoreduceflankingtransmissioninstagestoshowthatapartitionhasachievedaminimumvalueoftheFTLorminimumvalueoftheFSTCwhichmaymeetorexceedthecriterion.Ifitisdemonstratedthatnosignificantflankingexiststhroughshieldingofallpotentialflankingpaths,then,andonlythen,FTLandFSTCmaybereportedwithoutqualification.Note38212;Measuringthesoundtransmissionlosspropertiesofapartitionitselftodemonstratethatitmeetsorexceedsaspecificcriterionisverydifficultinthefieldduetothepresenceofflanking(2,3).Roomvolumeandabsorptionrequirementsmustalsobemet.Severalmetricsareavailableforspecificuses:NoiseReduction(NR)andNoiseIsolationClass(NIC)8212;Describethesoundisolationbetweentwospacesintheconditionfound.Themeasurementmethodvariesdependingonthesizeofthespaces.Wheneachspaceislessthan150cubicmeters,soundlevelsareaveragedoverthespace.NRvaluesforsuchspaceswhenunfurnishedwillusuallybelowerthanvaluesmeasuredwhenthespacesarefurnished.Thesevaluesrelatedirectlytothesoundattenuationexperiencedbyoccupantsofthespacesfortheconditionevaluated,includingtheeffectsofflankingandroomabsorption,andnotjusttotheperformanceofapartition.Thereforeresultsmaybedifferentwhenmeasuredindifferentdirections.Wheneitherofthespacesis150cubicmetersormore,soundlevelsaremeasuredinanareaclosetothepartitiononeachside.Theseresultsincludesomeeffectofroomabsorptionandflanking,buttheeffectofroomabsorptionislesswhenmeasuredclosetothepartition.NormalizedNoiseReduction(NNR)andNormalizedNoiseIsolationClass(NNIC)8212;Givethesoundisolationbetweentworesidentialorofficespacesadjustedtostandardizedroomconditions.Thisnormalizationisusuallydonetocompensateforalackorexcessoffurnishingsintherooms.NNRandNNICshallnotbeusedforspacesof150cubicmetersorlarger.Thesevaluesareintendedtore.........
【中国标准分类号】:P31
【国际标准分类号】:91_120_20
【页数】:12P.;A4
【正文语种】:英语


【英文标准名称】:Aerospaceseries-SteelFE-PA3601(X6CrNiTi18-10)-Airmelted-Softened-Plate-6mma50mm-500MPaR700MPa;GermanandEnglishversionEN3480:2007
【原文标准名称】:航空航天系列.FE-PA3601(X6CrNiTi18-10)型钢.空气熔炼.软化的.厚板材.6mm≤a≤50mm.500MPa≤Rm≤700MPa
【标准号】:DINEN3480-2008
【标准状态】:现行
【国别】:德国
【发布日期】:2008-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:验收规范;航空航天运输;航空运输;化学成分;交货条件;名称与符号;尺寸;热处理;材料名称;材料;金属材料;多语种的;厚板材;性能;半成品;软化退火;航天运输;规范(验收);钢;公差(测量);熔炼类型
【英文主题词】:Acceptancespecification;Aerospacetransport;Airtransport;Chemicalcomposition;Deliveryconditions;Designations;Dimensions;Heattreatment;Materialdesignations;Materials;Metallicmaterials;Multilingual;Plates;Properties;Semi-finishedproducts;Softannealing;Spacetransport;Specification(approval);Steels;Tolerances(measurement);Typeofmelting
【摘要】:Thisstandardspecifiestherequirementsrelatingto:SteelFE-PA3601(X6CrNiTi18-10)AirmeltedSoftenedPlate6mm【中国标准分类号】:V11
【国际标准分类号】:49_025_10
【页数】:14P.;A4
【正文语种】: