ISO 10245-3-1999 起重机限制器和指示器第3部分:塔式起重机
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来源:标准资料网
【英文标准名称】:Cranes-Limitingandindicatingdevices-Part3:Towercranes
【原文标准名称】:起重机限制器和指示器第3部分:塔式起重机
【标准号】:ISO10245-3-1999
【标准状态】:作废
【国别】:国际
【发布日期】:1999-10
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC96
【标准类型】:()
【标准水平】:()
【中文主题词】:塔式起重机;运输方法;起重机;提升设备;规范(验收);安全要求;规范;维修;装卸设备;定义;安全装置
【英文主题词】:Cranes;Definition;Definitions;Handlingequipment;Liftingequipment;Maintenance;Meansoftransport;Safetydevices;Safetyrequirements;Specification;Specification(approval);Towercranes
【摘要】:ThispartofISO10245providesspecificrequirementsforlimitingandindicatingdevicesfortowercranes.GeneralrequirementsaregiveninISO10245-1.ItappliestotowercranesasdefinedinISO4306-3.
【中国标准分类号】:J80
【国际标准分类号】:53_020_20
【页数】:3P;A4
【正文语种】:英语
【英文标准名称】:Insulatingandsheathingmaterialsofelectriccables.Commontestmethods.Part3:methodsspecifictoPVCcompounds.Section2:lossofmasstest.Thermalstabilitytest.
【原文标准名称】:电缆绝缘和护套材料.通用试验方法.第3部分:聚氯乙烯化合物专用方法.第2节:质量损耗试验.热稳定性试验
【标准号】:NFC32-030-1996
【标准状态】:现行
【国别】:法国
【发布日期】:1996-05-01
【实施或试行日期】:1996-05-05
【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】:K13
【国际标准分类号】:29_035_20
【页数】:16P;A4
【正文语种】:其他
【英文标准名称】:Acoustics-Determinationofsoundabsorptioncoefficientandimpedanceinimpedancetubes-Part2:Transfer-functionmethod
【原文标准名称】:声学阻抗管中吸声系数和比阻抗率的测量第2部分:传递函数法
【标准号】:ISO10534-2-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-11
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC43
【标准类型】:()
【标准水平】:()
【中文主题词】:测定;声学;声音吸收;传输;声学测量;声学试验;吸声系数;建筑声学;吸声;声试验
【英文主题词】:Acousticabsorption;Acousticmeasurement;Acoustictesting;Acoustics;Buildingacoustics;Determination;Soundabsorption;Soundabsorptioncoefficient;Transmission
【摘要】:Thistestmethodcoverstheuseofanimpedancetube,twomicrophonelocationsandadigitalfrequencyanalysissystemforthedeterminationofthesoundabsorptioncoefficientofsoundabsorbersfornormalsoundincidence.Itcanalsobeappliedforthedeterminationoftheacousticalsurfaceimpedanceorsurfaceadmittanceofsoundabsorbingmaterials.Sincetheimpedanceratiosofasoundabsorptivematerialarerelatedtoitsphysicalproperties,suchasairflowresistance,porosity,elasticityanddensity,measurementsdescribedinthistestmethodareusefulinbasicresearchandproductdevelopment.ThetestmethodissimilartothetestmethodspecifiedinISO10534-1inthatitusesanimpedancetubewithasoundsourceconnectedtooneendandthetestsamplemountedinthetubeattheotherend.However,themeasurementtechniqueisdifferent.Inthistestmethod,planewavesaregeneratedinatubebyanoisesource,andthedecompositionoftheinterferencefieldisachievedbythemeasurementofacousticpressuresattwofixedlocationsusingwall-mountedmicrophonesoranin-tubetraversingmicrophone,andsubsequentcalculationofthecomplexacoustictransferfunction,thenormalincidenceabsorptionandtheimpedanceratiosoftheacousticmaterial.Thetestmethodisintendedtoprovideanalternative,andgenerallymuchfaster,measurementtechniquethanthatofISO10534-1.ComparedwiththemeasurementofthesoundabsorptioninareverberationroomaccordingtothemethodspecifiedinISO354,therearesomecharacteristicdifferences.Thereverberationroommethodwill(underidealconditions)determinethesoundabsorptioncoefficientfordiffusesoundincidence,andthemethodcanbeusedfortestingofmaterialswithpronouncedstructuresinthelateralandnormaldirections.However,thereverberationroommethodrequirestestspecimenswhichareratherlarge,soitisnotconvenientforresearchanddevelopmentwork,whereonlysmallsamplesoftheabsorberareavailable.Theimpedancetubemethodislimitedtoparametricstudiesatnormalincidencebutrequiressamplesofthetestobjectwhichareofthesamesizeasthecross-sectionoftheimpedancetube.Formaterialsthatarelocallyreacting,diffuseincidencesoundabsorptioncoefficientscanbeestimatedfrommeasurementresultsobtainedbytheimpedancetubemethod.Fortransformationofthetestresultsfromtheimpedancetubemethod(normalincidence)todiffusesoundincidence,seeannexF.
【中国标准分类号】:A42
【国际标准分类号】:17_140_01
【页数】:27P;A4
【正文语种】:英语
