NF C96-008-1985 半导体器件.分立器件和集成电路.第8部分:场效应晶体管
时间:2024-05-15 12:49:00 来源: 标准资料网 作者：标准资料网 阅读：8493
【英文标准名称】:Semiconductordevices.Discretedevicesandintegratedcircuits.Part8:field-effecttransistors.
【原文标准名称】:半导体器件.分立器件和集成电路.第8部分:场效应晶体管
【标准号】:NFC96-008-1985
【标准状态】:现行
【国别】:法国
【发布日期】:1985-09-01
【实施或试行日期】:1985-09-20
【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】:电子工程;极限(数学);电子设备及元件;作标记;额定值;电气工程;定义;规范(验收);晶体管;半导体;场效应晶体管;检验;测量;半导体器件;集成电路
【英文主题词】:
【摘要】:
【中国标准分类号】:L44
【国际标准分类号】:31_080_30
【页数】:44P;A4
【正文语种】:其他
【英文标准名称】:Healdcarryingrods
【原文标准名称】:导综杆
【标准号】:JISL6313-1983
【标准状态】:现行
【国别】:日本
【发布日期】:1983-10-01
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonIndustrialMachinery
【标准类型】:()
【标准水平】:()
【中文主题词】:综丝
【英文主题词】:heddles
【摘要】:この規格は,O形へルド用へルドバーについて規定する。
【中国标准分类号】:W94
【国际标准分类号】:59_120_30
【页数】:4P;A4
【正文语种】:日语
【英文标准名称】:StandardPracticeforUltrasonicTestingofGeomembranes
【原文标准名称】:土工薄膜超声检验的标准实施规程
【标准号】:ASTMD7006-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D35.10
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:attenuation;geomembrane;mechanicalwaves;nondestructive;ultrasonic;wavevelocity;
【摘要】:Thispracticecoverstestarrangements,measurementtechniques,samplingmethods,andcalculationstobeusedfornondestructiveevaluationofgeomembranesusingultrasonictesting.Wavevelocitymaybeestablishedforparticulargeomembranes(forspecificpolymertype,specificformulation,specificdensity).Relationshipsmaybeestablishedbetweenvelocityandbothdensityandtensilepropertiesofgeomembranes.AnexampleoftheuseofultrasoundfordeterminingdensityofpolyethyleneispresentedinTestMethodD4883.Velocitymeasurementsmaybeusedtodeterminethicknessofgeomembranes(1,2).2Traveltimeandamplitudeoftransmittedwavesmaybeusedtoassesstheconditionofgeomembranesandtoidentifydefectsingeomembranesincludingsurfacedefects(forexample,scratches,cuts),innerdefects(forexample,discontinuitieswithingeomembranes),anddefectsthatpenetratetheentirethicknessofgeomembranes(forexample,pinholes)(3,4).Bondingbetweengeomembranesheetscanbeevaluatedusingtraveltime,velocity,orimpedancemeasurementsforseamassessment(5-10).Examplesoftheuseofultrasonictestingfordeterminingtheintegrityoffieldandfactoryseamsthroughtraveltimeandvelocitymeasurements(resultinginthicknessmeasurements)arepresentedinPracticesD4437andD4545,respectively.Anultrasonictestingdeviceisroutinelyusedforevaluatingseamsinprefabricatedbituminousgeomembranesinthefield(11).Integrityofgeomembranesmaybemonitoredintimeusingultrasonicmeasurements.Note18212;Differencesmayexistbetweenultrasonicmeasurementsandmeasurementsmadeusingothermethodsduetodifferencesintestconditionssuchaspressureappliedandprobedimensions.Anexampleisultrasonicandmechanicalthicknessmeasurements.Themethodisapplicabletotestingbothinthelaboratoryandinthefieldforparentmaterialandseams.Thetestdurationsareveryshortaswavetransmissionthroughgeomembranesoccurswithinmicroseconds.1.1Thispracticeprovidesasummaryofequipmentandproceduresforultrasonictestingofgeomembranesusingthepulseechomethod.1.2Ultrasonicwavepropagationinsolidmaterialsiscorrelatedtophysicalandmechanicalpropertiesandconditionofthematerials.Inultrasonictesting,twowavepropagationcharacteristicsarecommonlydetermined:velocity(basedonwavetraveltimemeasurements)andattenuation(basedonwaveamplitudemeasurements).Velocityofwavepropagationisusedtodeterminethickness,density,andelasticpropertiesofmaterials.Attenuationofwavesinsolidmaterialsisusedtodeterminemicrostructuralpropertiesofthematerials.Inaddition,frequencycharacteristicsofwavesareanalyzedtoinvestigatethepropertiesofatestmaterial.Traveltime,amplitude,andfrequencydistributionmeasurementsareusedtoassesstheconditionofmaterialstoidentifydamageanddefectsinsolidmaterials.Ultrasonicmeasurementsareusedtodeterminethenatureofmaterials/mediaincontactwithatestspecimenaswell.Measurementsareconductedinthetime-domain(timeversusamplitude)orfrequency-domain(frequencyversusamplitude).1.3Measurementsofoneormoreultrasonicwavetransmissioncharacteristicsaremadebasedontherequirementsofthespecifictestingprogram.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitat......
【中国标准分类号】:W59
【国际标准分类号】:59_080_70
【页数】:10P.;A4
【正文语种】: