ANSI/ASA S12.5-2006 声学.测定声功率级用的基准声源的性能和校准要求
时间:2024-05-15 17:06:54 来源: 标准资料网 作者：标准资料网 阅读：8504
【英文标准名称】:Acoustics-RequirementsforthePerformanceandCalibrationofReferenceSoundSourcesUsedfortheDeterminationofSoundPowerLevels
【原文标准名称】:声学.测定声功率级用的基准声源的性能和校准要求
【标准号】:ANSI/ASAS12.5-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006-01-01
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Calibration;Comparisonsoundsources;Definitions;Determination;Electricalengineering;Noise(environmental);Noisemeasurements;Noisesources;Properties;Referencesources;Referencetone;Soundintensity;Soundlevel;Soundlevels;Soundpower;Soundsources;Specification(approval);Specifications;Testing;Tests
【摘要】:Referencesoundsourcesareusedextensivelyin"comparisonmethods"fordeterminingthenoiseemissionsofphysicallystationarysoundsources.Areferencesoundsource,ofknownsoundpoweroutput,isusedtoestablishthenumericalrelationshipbetweenthesoundpowerlevelofasource,inagivenlocationinagivenacousticalenvironmentandthespace-andtime-averagedsoundpressurelevelatasetofmicrophonepositions.ThisisanidenticalnationaladoptionofISO6926:1999.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:
【正文语种】:英语
【英文标准名称】:Dust-pressedceramictileswithawaterabsorptionEsuperiorto10percent(GroupBIII).
【原文标准名称】:吸水性E大于10％的干压成形瓷砖和地板砖.BIII组(欧洲标准EN159)
【标准号】:NFP61-408-1991
【标准状态】:作废
【国别】:法国
【发布日期】:1991-12-01
【实施或试行日期】:1991-12-20
【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】:
【英文主题词】:
【摘要】:
【中国标准分类号】:Q31
【国际标准分类号】:91_100_25
【页数】:7P;A4
【正文语种】:其他
【英文标准名称】:StandardPracticeforMakingReferenceGlass-MetalSandwichSealandTestingforExpansionCharacteristicsbyPolarimetricMethods
【原文标准名称】:偏振法测定膨胀特性用的参考玻璃金属夹层密封材料的制作与试验
【标准号】:ASTMF144-1980(2005)
【标准状态】:现行
【国别】:
【发布日期】:1980
【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】:C14.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:试验;电子工程;夹心部件;工艺;玻璃;比较;密封件;金属
【英文主题词】:expansionmismatch;glass-metalseals
【摘要】:Thetermx201C;referencex201D;asemployedinthispracticeimpliesthateithertheglassorthemetalofthereferenceglass-metalsealwillbeax201C;standardreferencematerialx201D;suchasthosesuppliedforotherphysicaltestsbytheNationalInstituteofStandardsandTechnology,orasecondaryreferencematerialwhosesealingcharacteristicshavebeendeterminedbysealstoastandardreferencematerial(seeNBSSpecialPublication260).UntilstandardreferencematerialsforsealsareestablishedbytheNIST,secondaryreferencematerialsmaybeagreeduponbetweenmanufacturerandpurchaser.1.1Thispracticecoversthepreparationandtestingofareferenceglass-metalsandwichsealfordeterminingstressintheglassorfordeterminingthedegreeofthermalexpansion(orcontraction)mismatchbetweentheglassandmetal.TestsareinaccordancewithMethodF218(Section2).1.2Thispracticeappliestoallglassandmetal(oralloy)combinationsnormallysealedtogetherintheproductionofelectroniccomponents.1.3Thepracticallimitofthetestinderivingmismatchisapproximately300ppm,abovewhichtheglassislikelytofracture.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J22
【国际标准分类号】:21_140
【页数】:5P.;A4
【正文语种】: