BS EN 50289-4-2-2001 通信电缆.试验方法规范.环境试验方法.水渗透性
时间:2024-05-11 21:14:31 来源: 标准资料网 作者：标准资料网 阅读：9027
【英文标准名称】:Communicationcables-Specificationsfortestmethods-Environmentaltestmethods-Waterpenetration
【原文标准名称】:通信电缆.试验方法规范.环境试验方法.水渗透性
【标准号】:BSEN50289-4-2-2001
【标准状态】:现行
【国别】:英国
【发布日期】:2001-11-13
【实施或试行日期】:2001-11-13
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:通信传输线路;吸水率;吸水试验;渗透性试验;环境试验;电缆;通信电缆
【英文主题词】:Analogue;Analoguesignals;Cables;Communicationcables;Communicationtechnology;Digital;Digitalsignals;Electricalengineering;Environmentalcondition;Environmentalconditions;Environmentaleffect;Environmentalresistance;Environmentalsustainability;Humidityaffects;Hydrolyticresistance;Influenceofwater;Materialstesting;Moistureresistance;Resistance;Specification;Specification(approval);Testing;Water-resistancetests;Watertightness;Watertightnesstests
【摘要】:TobereadinconjunctionwithBSEN50289-4-1:2001
【中国标准分类号】:K13
【国际标准分类号】:33_120_10
【页数】:10P.;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforFlexuralPropertiesofPolymerMatrixCompositeMaterials
【原文标准名称】:聚合物基复合材料弯曲性能标准试验方法
【标准号】:ASTMD7264/D7264M-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007
【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】:D30.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fiber-reinforcedcomposites;flexuralproperties;stiffness;strength
【摘要】:Thistestmethoddeterminestheflexuralproperties(includingstrength,stiffness,andload/deflectionbehavior)ofpolymermatrixcompositematerialsundertheconditionsdefined.ProcedureAisusedforthree-pointloadingandProcedureBisusedforfour-pointloading.Thistestmethodwasdevelopedforoptimumusewithcontinuous-fiber-reinforcedpolymermatrixcompositesanddiffersinseveralrespectsfromotherflexuremethods,includingtheuseofastandardspan-to-thicknessratioof32:1versusthe16:1ratiousedbyTestMethodsD790(aplastics-focusedmethodcoveringthree-pointflexure)andD6272(aplastics-focusedmethodcoveringfour-pointflexure).Thistestmethodisintendedtointerrogatelong-beamstrengthincontrasttotheshort-beamstrengthevaluatedbyTestMethodD2344/D2344M.Flexuralpropertiesdeterminedbytheseprocedurescanbeusedforqualitycontrolandspecificationpurposes,andmayfinddesignapplications.Theseprocedurescanbeusefulintheevaluationofmultipleenvironmentalconditionstodeterminewhicharedesigndriversandmayrequirefurthertesting.Theseproceduresmayalsobeusedtodetermineflexuralpropertiesofstructures.1.1Thistestmethoddeterminestheflexuralstiffnessandstrengthpropertiesofpolymermatrixcomposites.1.1.1ProcedureA8212;Athree-pointloadingsystemutilizingcenterloadingonasimplysupportedbeam.1.1.2ProcedureB8212;Afour-pointloadingsystemutilizingtwoloadpointsequallyspacedfromtheiradjacentsupportpoints,withadistancebetweenloadpointsofone-halfofthesupportspan.Note18212;UnlikeTestMethodD6272,whichallowsloadingatbothone-thirdandone-halfofthesupportspan,inordertostandardizegeometryandsimplifycalculationsthisstandardpermitsloadingatonlyone-halfthesupportspan.1.2Forcomparisonpurposes,testsmaybeconductedaccordingtoeithertestprocedure,providedthatthesameprocedureisusedforalltests,sincethetwoproceduresgenerallygiveslightlydifferentpropertyvalues.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetext,theinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_120
【页数】:11P.;A4
【正文语种】:英语
【英文标准名称】:Varnishedglassbiastapes
【原文标准名称】:斜纹玻璃漆布带
【标准号】:JISC2362-1981
【标准状态】:作废
【国别】:日本
【发布日期】:1981-09-01
【实施或试行日期】:1981-09-01
【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】:纺织纤维;热阻;清漆;电线;窄条带材;电缆;纺织玻璃纤维;绝缘层;电绝缘装置;电气设备;电绝缘材料;耐热材料;玻璃;耐热玻璃;机织物;电绝缘
【英文主题词】:tape;textilefibres;wovenfabrics;glass;;heat-resistantglass;heat-resistantmaterials;textileglass;thermalresistance;;;electricalinsulation
【摘要】:
【中国标准分类号】:K15
【国际标准分类号】:29_040_20
【页数】:4P;A4
【正文语种】:日语