NF T65-000-1997 碳氢粘合剂.定义和分类
作者:标准资料网 时间:2024-05-14 19:12:07 浏览:9222
来源:标准资料网
【英文标准名称】:Hydrocarbonbinders.Definitionsandclassification.
【原文标准名称】:碳氢粘合剂.定义和分类
【标准号】:NFT65-000-1997
【标准状态】:作废
【国别】:法国
【发布日期】:1997-06-01
【实施或试行日期】:1997-06-20
【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】:G38
【国际标准分类号】:75_140
【页数】:7P;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
【英文标准名称】:Timberprofilesforwindowsandwindowdoors;dimensions,qualityrequirements
【原文标准名称】:窗和窗门用木质型材.尺寸、质量要求
【标准号】:DIN68121-1-1993
【标准状态】:现行
【国别】:德国
【发布日期】:1993-09
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:设计;木材剖面;规范(认可);定义;门;建筑;施工;木材;建设;质量;尺寸;把手(门);落地窗;开启(窗);质量要求;木制品;外形;建筑系统构件;窗
【英文主题词】:Construction;Constructionsystemsparts;Definition;Definitions;Design;Dimensions;Doors;Frenchwindows;Handing(doors);Openingin(windows);Profile;Quality;Qualityrequirements;Specification(approval);Timberprofile;Windows;Wood;Woodproducts
【摘要】:Thisdocumentappliestocasementsidehungwindows,tiltandturnwindows,andbottomhungwindowsaswellastocorrespondingwindowdoorsmadefromwood.Itcoversspecificationsforthesubjects:concepts,profilesections,woodqualityandexecution.
【中国标准分类号】:Q71
【国际标准分类号】:91_060_50
【页数】:14P;A4
【正文语种】:德语
