JIS C2411-1978 绝缘用硅酮漆玻璃丝管
时间:2024-05-14 21:21:08 来源: 标准资料网 作者：标准资料网 阅读：8002
【英文标准名称】:Siliconevarnishedglasssleevingforelectricalinsulation
【原文标准名称】:绝缘用硅酮漆玻璃丝管
【标准号】:JISC2411-1978
【标准状态】:作废
【国别】:日本
【发布日期】:
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JISC)
【起草单位】:Electricity
【标准类型】:()
【标准水平】:()
【中文主题词】:电绝缘装置;聚氯乙烯;管;清漆;电绝缘材料;耐热玻璃;热阻;电气布线系统;电绝缘;有机覆层;耐热材料;乙烯基树脂;玻璃;氯乙烯;绝缘层;硅氧烷
【英文主题词】:polyvinylchloride;vinylresins;;;electricalinsulation;silicones;;glass;pipes;;heat-resistantglass;heat-resistantmaterials;thermalresistance;;;
【摘要】:
【中国标准分类号】:K15
【国际标准分类号】:29_040_20
【页数】:8P;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】:
【英文标准名称】:Doublefacesledgehammers
【原文标准名称】:双面大锤
【标准号】:DIN6475-1976
【标准状态】:作废
【国别】:德国
【发布日期】:1976-12
【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】:材料;设计;手柄(工具);工具;作标记;尺寸;手工工具;手锤
【英文主题词】:tools;marking;handtools;handles(tools);sledgehammers;dimensions;materials;design
【摘要】:
【中国标准分类号】:J47
【国际标准分类号】:4560
【页数】:2P;A4
【正文语种】:德语