ASTM E1211-2007 用表面安装的声辐射探测器作泄漏探测和定位的标准实施规程
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【英文标准名称】:StandardPracticeforLeakDetectionandLocationUsingSurface-MountedAcousticEmissionSensors
【原文标准名称】:用表面安装的声辐射探测器作泄漏探测和定位的标准实施规程
【标准号】:ASTME1211-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E07.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:声学设备;声学测试;声学;检测;泄漏量;金属;无损检验;工艺;测试
【英文主题词】:acousticemission;continuousmonitoring;hydrotest;leakdetection;nondestructivetesting;pipingsystems;pressurevessels
【摘要】:Leakageofgasorliquidfromapressurizedsystem,whetherthroughacrack,orifice,sealbreak,orotheropening,mayinvolveturbulentorcavitationalflow,whichgeneratesacousticenergyinboththeexternalatmosphereandthesystempressureboundary.Acousticenergytransmittedthroughthepressureboundarycanbedetectedatadistancebyusingasuitableacousticemissionsensor.Withproperselectionoffrequencypassband,sensitivitytoleaksignalscanbemaximizedbyeliminatingbackgroundnoise.Atlowfrequencies,generallybelow100kHz,itispossibleforaleaktoexcitemechanicalresonanceswithinthestructurethatmayenhancetheacousticsignalsusedtodetectleakage.Thispracticeisnotintendedtoprovideaquantitativemeasureofleakrates.1.1Thispracticedescribesapassivemethodfordetectingandlocatingthesteadystatesourceofgasandliquidleakingoutofapressurizedsystem.Themethodemployssurface-mountedacousticemissionsensors(fornon-contactsensorsseeTestMethodE1002),orsensorsattachedtothesystemviaacousticwaveguides(foradditionalinformation,seeTerminologyE1316),andmaybeusedforcontinuousin-servicemonitoringandhydrotestmonitoringofpipingandpressurevesselsystems.Highsensitivitiesmaybeachieved,althoughthevaluesobtainabledependonsensorspacing,backgroundnoiselevel,systempressure,andtypeofleak.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareprovidedforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N65
【国际标准分类号】:17_140_01
【页数】:5P.;A4
【正文语种】:
【原文标准名称】:用表面安装的声辐射探测器作泄漏探测和定位的标准实施规程
【标准号】:ASTME1211-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E07.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:声学设备;声学测试;声学;检测;泄漏量;金属;无损检验;工艺;测试
【英文主题词】:acousticemission;continuousmonitoring;hydrotest;leakdetection;nondestructivetesting;pipingsystems;pressurevessels
【摘要】:Leakageofgasorliquidfromapressurizedsystem,whetherthroughacrack,orifice,sealbreak,orotheropening,mayinvolveturbulentorcavitationalflow,whichgeneratesacousticenergyinboththeexternalatmosphereandthesystempressureboundary.Acousticenergytransmittedthroughthepressureboundarycanbedetectedatadistancebyusingasuitableacousticemissionsensor.Withproperselectionoffrequencypassband,sensitivitytoleaksignalscanbemaximizedbyeliminatingbackgroundnoise.Atlowfrequencies,generallybelow100kHz,itispossibleforaleaktoexcitemechanicalresonanceswithinthestructurethatmayenhancetheacousticsignalsusedtodetectleakage.Thispracticeisnotintendedtoprovideaquantitativemeasureofleakrates.1.1Thispracticedescribesapassivemethodfordetectingandlocatingthesteadystatesourceofgasandliquidleakingoutofapressurizedsystem.Themethodemployssurface-mountedacousticemissionsensors(fornon-contactsensorsseeTestMethodE1002),orsensorsattachedtothesystemviaacousticwaveguides(foradditionalinformation,seeTerminologyE1316),andmaybeusedforcontinuousin-servicemonitoringandhydrotestmonitoringofpipingandpressurevesselsystems.Highsensitivitiesmaybeachieved,althoughthevaluesobtainabledependonsensorspacing,backgroundnoiselevel,systempressure,andtypeofleak.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.SIunitsareprovidedforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:N65
【国际标准分类号】:17_140_01
【页数】:5P.;A4
【正文语种】:
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