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【英文标准名称】:Fluidpowersystemsandcomponents;cylinderboresandpistonroddiameter;metricseries
【原文标准名称】:液压传动系统和元件.油缸内径和活塞杆直径.米制系列
【标准号】:DINISO3320-1984
【标准状态】:作废
【国别】:德国
【发布日期】:1984-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DIN)
【起草单位】:NAM
【标准类型】:()
【标准水平】:()
【中文主题词】:液压传动系统;圆柱体;流体技术;优先尺寸;流体动力缸;液压缸;定义;液压传动;尺寸;气动缸;气液传动;气动传动系统;活塞;液压设备;直径;气动设备;井;活塞杆;孔径
【英文主题词】:
【摘要】:
【中国标准分类号】:J20
【国际标准分类号】:1150
【页数】:3P;A4
【正文语种】:德语


【英文标准名称】:StandardTestMethodsforPropertiesofContinuousFilamentCarbonandGraphiteFiberTows
【原文标准名称】:碳及石墨纤维束的连续长丝抗拉特性的标准试验方法
【标准号】:ASTMD4018-1999(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:D30.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Carbon;Continuousfilamentcarbon/graphitematerials;Extensometers;Graphitefibermaterials;Highmodulusfibrouscomposites;Impregnationprocedures;Loadingtests;Resinmatrixcomposites;Resins(composite);Tensileproperties/testing--aerospacemat
【摘要】:Thepropertiesdeterminedbythesetestmethodsareofvalueinmaterialspecifications,qualifications,databasegeneration,certification,research,anddevelopment.Thesetestmethodsareintendedforthetestingoffibersthathavebeenspecificallydevelopedforuseasreinforcingagentsinadvancedcompositestructures.Thetestresultsofanimpregnatedandconsolidatedfibershouldberepresentativeofthestrengthandmodulusthatareavailableinthematerialwhenusedasintended.Theperformanceoffibersindifferentresinsystemscanvarysignificantlysothatcorrelationsbetweenresultsusingthesetestmethodsandcompositetestingmaynotalwaysbeobtained.Thereproducibilityoftestresultsisdependentuponprecisecontroloveralltestconditions.Resintype,contentanddistribution,curingprocess,filamentalignment,grippinginthetestingmachine,andalignmentinthetestingmachineareofspecialimportance.Themeasuredstrengthsoffibersarenotuniquequantitiesandtestresultsarestronglydependentonthetestmethodsused.Thereforethetestmethoddescribedherewillnotnecessarilygivethesamemeanstrengthsorstandarddeviationsasthoseobtainedfromsinglefilaments,dryfibers,compositelaminas,orcompositelaminates.1.1Thesetestmethodscoverthepreparationandtensiletestingofresin-impregnatedandconsolidatedtestspecimensmadefromcontinuousfilamentcarbonandgraphiteyarns,rovings,andtowstodeterminetheirtensileproperties.1.2Thesetestmethodsalsocoverthedeterminationofthedensityandmassperunitlengthoftheyarn,roving,ortowtoprovidesupplementarydatafortensilepropertycalculation.1.3Thesetestmethodsincludeaprocedureforsizingremovaltoprovidethepreferreddesizedfibersamplesfordensitymeasurement.Thisproceduremayalsobeusedtodeterminetheweightpercentsizing.1.4Thesetestmethodsincludeaprocedurefordeterminingtheweightpercentmoistureadsorptionofcarbonorgraphitefiber.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q50
【国际标准分类号】:59_100_20
【页数】:7P.;A4
【正文语种】:英语