IEC 60819-3-3-1991 电工用非纤维素纸规范第3部分:单项材料规范活页3:非填充聚芳酰胺纸
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【英文标准名称】:Specificationfornon-cellulosicpapersforelectricalpurposes;part3:specificationsforindividualmaterials;sheet3:unfilledaramid(aromaticpolyamide)papers
【原文标准名称】:电工用非纤维素纸规范第3部分:单项材料规范活页3:非填充聚芳酰胺纸
【标准号】:IEC60819-3-3-1991
【标准状态】:作废
【国别】:国际
【发布日期】:1991-05
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/TC15
【标准类型】:()
【标准水平】:()
【中文主题词】:绝缘材料;电绝缘材料;电气工程;聚酰胺纸;芳族聚酰胺;规范;绝缘纸
【英文主题词】:Aramide;Electricalengineering;Electricalinsulatingmaterials;Insulatingmaterials;Insulatingpapers;Polyamidepapers;Specification
【摘要】:Specifiesrequirementsforthreetypesofpaper:type1-calenderedpaper;type2-calenderedpaper,withimprovedtearingresistanceandconformability;type3-uncalenderedpaper.
【中国标准分类号】:Y32;K15
【国际标准分类号】:29_035_20
【页数】:11P;A4
【正文语种】:英语
【英文标准名称】:Liquefiedpetroleumgases.Volatility.
【原文标准名称】:液化石油气.挥发性
【标准号】:NFM41-012-1990
【标准状态】:现行
【国别】:法国
【发布日期】:1990-12-01
【实施或试行日期】:1990-12-20
【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】:E46
【国际标准分类号】:75_160_30
【页数】:10P.;A4
【正文语种】:其他
【英文标准名称】:Plastics-Verificationofpendulumimpact-testingmachines-Charpy,Izodandtensileimpact-testing
【原文标准名称】:塑料.摆锤冲击试验机的鉴定.Charpy,Izod和拉伸冲击试验
【标准号】:BSISO13802-1999
【标准状态】:现行
【国别】:英国
【发布日期】:1999-12-15
【实施或试行日期】:1999-12-15
【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】:
【英文主题词】:
【摘要】:ThisInternationalStandardspecifiesmethodsfortheverificationofpendulumimpact-testingmachinesusedfortheCharpyimpacttest,IzodimpacttestandtensileimpacttestdescribedinISO179-1,ISO180andISO8256,respectively.ThetestmachinescoveredbythisInternationalStandardareofthependulumtype.TheimpactenergyW(see3.12)absorbedinimpactingatestspecimenistakenasbeingequaltothedifferencebetweenthepotentialenergyE(see3.11)ofthependulumandtheenergyremaininginthependulumafterimpactingthespecimen.Theimpactenergyiscorrectedforfrictionandair-resistancelosses(seeTable2and5.6).Methodsaredescribedforverificationofthegeometricalandphysicalpropertiesofthedifferentpartsofthetestmachine.Theverificationofsomegeometricalpropertiesisdifficulttoperformontheassembledinstrument.ItisthereforeassumedthatthemanufacturerisresponsiblefortheverificationofsuchpropertiesandforprovidingreferenceplanesontheinstrumentthatenableproperverificationinaccordancewiththisInternationalStandard.Thesemethodsareforusewhenthemachineisbeinginstalled,isbeingrepaired,hasbeenmovedorisundergoingperiodicchecking.ThisInternationalStandardisapplicabletopendulum-typeimpact-testingmachines,ofdifferentcapacitiesand/ordesigns,withthegeometricalandphysicalpropertiesdefinedinclause5.Apendulumimpact-testingmachineverifiedinaccordancewiththisInternationalStandard,andassessedassatisfactory,isconsideredsuitableforimpacttestingwithunnotchedandnotchedtestspecimensofdifferenttypes.AnnexAdescribestherelationshipsbetweenthevariouscharacteristicpendulumlengths,thepotentialenergyandthemomentofinertiaofthependulum.AnnexBexplainshowtocalculatetheratioofframemasstopendulummassrequiredtoavoiderrorsintheimpactenergy.AnnexCdescribes,forCharpyimpacttesting,thechangesinpendulumvelocityjustafterimpactasafunctionofimpactenergyandgivestherangesofimpactenergiesforthemeasurementofwhichpendulumsofspecifiedcapacityhavetobeused.AnnexDdiscussesthestiffnessofthebaseoftheframenecessarytoavoidresonantoscillationsintheframeduetoreactionforcescausedbythemovingpendulum.AnnexEgivesthedimensionsofagaugeplatesuitablefortheverificationofCharpyimpact-testingmachines.
【中国标准分类号】:G31
【国际标准分类号】:83_200
【页数】:44P;A4
【正文语种】:英语