EN ISO 3745-2009 声学,噪声源声功率级的测定.消声室和半声室精密测定(ISO3745:2003),德文版本ENISO3745:2009
作者:标准资料网 时间:2024-05-18 18:05:38 浏览:9128
来源:标准资料网
【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Precisionmethodsforanechoicandhemi-anechoicrooms(ISO3745:2003);EnglishversionofDINENISO3745:2009-11
【原文标准名称】:声学,噪声源声功率级的测定.消声室和半声室精密测定(ISO3745:2003),德文版本ENISO3745:2009
【标准号】:ENISO3745-2009
【标准状态】:现行
【国别】:
【发布日期】:2009-11
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acousticmeasurement;Acoustics;Closedtestrooms;Definitions;Envelopingsurfacemethods;Laboratorytesting;Laboratorytests;Mathematicalcalculations;Measurement;Measuringtechniques;Noise(environmental);Noisemeasurements;Noisesources;Reflection;Reverberationrooms;Soundenergy;Soundintensity;Soundlevel;Soundlevels;Soundpower;Soundpressure;Soundpressurelevel;Soundsources
【摘要】:
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:54P.;A4
【正文语种】:英语
【英文标准名称】:Layoutofletters.
【原文标准名称】:信件的格式
【标准号】:NFZ11-001-1982
【标准状态】:现行
【国别】:法国
【发布日期】:1982-07-01
【实施或试行日期】:1982-07-21
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:贸易文件;数据表示;建筑规范;书写;行距;管理文献;数据显示(器);显示装置(计算机);页边;信函;文献;颜色;邮政地址;尺寸;名称与符号;建筑规程
【英文主题词】:
【摘要】:
【中国标准分类号】:M83
【国际标准分类号】:01_140_30
【页数】:14P;A4
【正文语种】:其他
【英文标准名称】:StandardTestMethodsforPittingandCreviceCorrosionResistanceofStainlessSteelsandRelatedAlloysbyUseofFerricChlorideSolution
【原文标准名称】:用氯化铁溶液测定不锈钢及有关合金耐点腐蚀和缝隙腐蚀的标准试验方法
【标准号】:ASTMG48-2003(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:2003
【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】:G01.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:crevicecorrosion;ferricchloridetestsolution;localizedcorrosion;nickel&x2013;basealloys;pitting;stainlesssteels;Chlorideanalysis--metals/alloys;Crevicecorrosion;Ferricchloridecorrosiontest;Multiplecrevice
【摘要】:Thesetestmethodsdescribelaboratorytestsforcomparingtheresistanceofstainlesssteelsandrelatedalloystotheinitiationofpittingandcrevicecorrosion.Theresultsmaybeusedforrankingalloysinorderofincreasingresistancetopittingandcrevicecorrosioninitiationunderthespecificconditionsofthesemethods.MethodsAandBaredesignedtocausethebreakdownofType304atroomtemperature.Theuseofferricchloridesolutionsisjustifiedbecauseitisrelatedto,butnotthesameas,thatwithinapitorcrevicesiteonaferrousalloyinchloridebearingenvironments(1,2).Thepresenceofaninertcreviceformerofconsistentdimensiononasurfaceisregardedassufficientspecificationofcrevicegeometrytoassessrelativecrevicecorrosionsusceptibility.Therelativeperformanceofalloysinferricchloridesolutiontestshasbeencorrelatedtoperformanceincertainrealenvironments,suchasnaturalseawateratambienttemperature(3)andstronglyoxidizing,lowpH,chloridecontainingenvironments(4),butseveralexceptionshavebeenreported(4-7).MethodsA,B,C,D,E,andFcanbeusedtoranktherelativeresistanceofstainlesssteelsandnickelbasealloystopittingandcrevicecorrosioninchloride-containingenvironments.Nostatementcanbemadeaboutresistanceofalloysinenvironmentsthatdonotcontainchlorides.MethodsA,B,C,D,E,andFweredesignedtoacceleratethetimetoinitiatelocalizedcorrosionrelativetomostnaturalenvironments.Consequently,thedegreeofcorrosiondamagethatoccursduringtestingwillgenerallybegreaterthanthatinnaturalenvironmentsinanysimilartimeperiod.NostatementregardinglocalizedcorrosionpropagationcanbemadebasedontheresultsofMethodsA,B,C,D,EorF.Surfacepreparationcansignificantlyinfluenceresults.Therefore,grindingandpicklingofthespecimenwillmeanthattheresultsmaynotberepresentativeoftheconditionsoftheactualpiecefromwhichthesamplewastaken.Note18212;Grindingorpicklingonstainlesssteelsurfacesmaydestroythepassivelayer.A24-hairpassivationaftergrindingorpicklingissufficienttominimizethesedifferences(8).TheproceduresinMethodsC,D,EandFformeasuringcriticalpittingcorrosiontemperatureandcriticalcrevicecorrosiontemperaturehavenobiasbecausethevaluesaredefinedonlyintermsofthesetestmethods.1.1Thesetestmethodscoverproceduresforthedeterminationoftheresistanceofstainlesssteelsandrelatedalloystopittingandcrevicecorrosion(seeTerminologyG15)whenexposedtooxidizingchlorideenvironments.SixproceduresaredescribedandidentifiedasMethodsA,B,C,D,E,andF.1.1.1MethodA8212;Ferricchloridepittingtest.1.1.2MethodB8212;Ferricchloridecrevicetest.1.1.3MethodC8212;Criticalpittingtemperaturetestfornickel-baseandchromium-bearingalloys.1.1.4MethodD8212;Criticalcrevicetemperaturetestfornickel-baseandchromium-bearingalloys.1.1.5MethodE8212;Criticalpittingtemperaturetestforstainlesssteels.1.1.6MethodF8212;Criticalcrevicetemperaturetestforstainlesssteels.
