SAE AS39029/57 Contacts, Electrical Connectors, Socket Crimp Removable (For Mil-C-24308, Mil-C-38999 Series Ii, Mil-C-5
作者:标准资料网 时间:2024-05-17 17:26:42 浏览:8361
来源:标准资料网
Product Code:SAE AS39029/57
Title:Contacts, Electrical Connectors, Socket Crimp Removable (For Mil-C-24308, Mil-C-38999 Series Ii, Mil-C-55302/68, /71, /72, /75 and Mil-C-83733 Connectors)
Issuing Committee:Ae-8c1 Connectors Committee
Scope: No scope available.
Rationale: No scope available.
上一篇:
SAE MA3375 Studs, Corrosion and Heat Resistant Steel, UNS S66286 Tensile Strength 900 MPa, Procurement Specification, Me下一篇:
SAE AS39029/58 Contacts, Electrical Connector, Pin, Crimp Removable (For Mil-C-24308, Mil-C-38999 Series I, Ii, Iii, an
基本信息
| 标准名称： | 火花试验机 |
| 英文名称： | Calibration Specification of Wire Spark Tester |
| 发布部门： | 山东省质量技术监督局 |
| 发布日期： | 2007-03-19 |
| 实施日期： | 2007-04-19 |
| 首发日期： | |
| 作废日期： | |
| 归口单位： | 山东省质量技术监督局 |
| 起草单位： | 山东省计量科学研究院 |
| 起草人： | 王新军、张勤等 |
| 出版日期： | 2007-04-19 |
| 页数： | 15页 |
适用范围
本规范适用于电线电缆检测用工频火花试验机和直流火花试验机的首次校准、后续校准和使用中检验。
本规范不适用于高频火花试验机、火花检漏仪和其他用途的火花试验机的校准。
前言
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目录
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引用标准
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所属分类： 矿业 地质矿产勘察与开发 金属矿产勘察
【英文标准名称】:StandardTestMethodforMeasurementofNormalIncidenceSoundTransmissionofAcousticalMaterialsBasedontheTransferMatrixMethod
【原文标准名称】:基于传输矩阵法测量声学材料的垂直入射传输的标准试验方法
【标准号】:ASTME2611-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E33.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:4-microphone;impedancetube;normalincidence;transferfunction;transfermatrix;transmissionloss
【摘要】:Thereareseveralpurposesofthistest:Fortransmissionloss:(a)tocharacterizethesoundinsulationcharacteristicsofmaterialsinalessexpensiveandlesstimeconsumingapproachthanTestMethodE90andISO140-3(x201C;reverberantroommethodsx201D;),(b)toallowsmallsamplestestedwhenlargersamplesareimpossibletoconstructortotransport,(c)toallowarapidtechniquethatdoesnotrequireanexperiencedprofessionaltorun.Fortransfermatrix:(a)todetermineadditionalacousticpropertiesofthematerial;(b)toallowcalculationofacousticpropertiesofbuilt-uporcompositematerialsbythecombinationoftheirindividualtransfermatrices.Therearesignificantdifferencesbetweenthismethodandthatofthemoretraditionalreverberantroommethod.Specifically,inthisapproachthesoundimpingesonthespecimeninaperpendiculardirection(x201C;normalincidencex201D;)only,comparedtotherandomincidenceoftraditionalmethods.Additionally,revererationroommethodsspecifycertainminimumsizesfortestspecimenswhichmaynotbepracticalforallmaterials.Atpresentthecorrelation,ifany,betweenthetwomethodsisnotknown.Eventhoughthismethodmaynotreplicatethereverberantroommethodsformeasuringthetransmissionlossofmaterials,itcanprovidecomparisondataforsmallspecimens,somethingthatcannotbedoneinthereverberantroommethod.Normalincidencetransmissionlossmayalsobeusefulincertainsituationswherethematerialisplacedwithinasmallacousticalcavityclosetoasoundsource,forexample,aclosely-fittedmachineenclosureorportableelectronicdevice.Transmissionlossisnotonlyapropertyofamaterial,butisalsostronglydependentonboundaryconditionsinherentinthemethodanddetailsofthewaythematerialismounted.Thismustbeconsideredintheinterpretationoftheresultsobtainedbythistestmethod.Thequantitiesaremeasuredasafunctionoffrequencywitharesolutiondeterminedbythesamplingrate,transformsize,andotherparametersofadigitalfrequencyanalysissystem.Theusablefrequencyrangedependsonthediameterofthetubeandthespacingbetweenthemicrophonepositions.Anextendedfrequencyrangemaybeobtainedbyusingtubeswithvariousdiametersandmicrophonespacings.Theapplicationofmaterialsintoacousticalsystemelementswillprobablynotbesimilartothistestmethodandthereforeresultsobtainedbythismethodmaynotcorrelatewithperformancein-situ.1.1Thistestmethodcoverstheuseofatube,fourmicrophones,andadigitalfrequencyanalysissystemforthemeasurementofnormalincidenttransmissionlossandotherimportantacousticpropertiesofmaterialsbydeterminationoftheacoustictransfermatrix.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A59
【国际标准分类号】:17_140_01
【页数】:14P.;A4
【正文语种】:英语
