【英文标准名称】:StandardTestMethodforIn-PlaneShearPropertiesofPolymerMatrixCompositeMaterialsbytheRailShearMethod
【原文标准名称】:轨道剪切法测定聚合母体组合材料平面剪切特性的标准试验方法
【标准号】:ASTMD4255/D4255M-2001(2007)
【标准状态】:现行
【国别】:美国
【发布日期】:2001
【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】:(Guide)
【标准水平】:()
【中文主题词】:
【英文主题词】:compositematerials;shearmodulusofelasticity;shearproperties;shearstrength
【摘要】:Thesesheartestsaredesignedtoproducein-planeshearpropertydataformaterialspecifications,researchanddevelopment,anddesign.Factorsthatinfluencetheshearresponseandshouldthereforebereportedinclude:material,methodsofmaterialpreparationandlay-up,specimenstackingsequence,specimenpreparation,specimenconditioning,environmentoftesting,specimenalignmentandgripping,speedoftesting,timeattemperature,voidcontent,andfibervolumereinforcementcontent.Propertiesthatmaybemeasuredbythistestmethodinclude:5.1.1In-planeshearstressversusshearstrainresponse,5.1.2In-planeshearchordmodulusofelasticity,5.1.3Offsetshearstress,and5.1.4Maximumin-planeshearstress.Incasesinwhichthestrainatfailureisgreaterthan5%,theshearstresscorrespondingto5%shearstrainshouldbereported.1.1Thistestmethoddeterminesthein-planeshearpropertiesofhigh-modulusfiber-reinforcedcompositematerialsbyeitheroftwoprocedures.InProcedureA,laminatesclampedbetweentwopairsofloadingrailsaretested.Whenloadedintensiontherailsintroduceshearforcesinthespecimen.InProcedureB,laminatesclampedonoppositeedgeswithatensileorcompressiveloadappliedtoathirdpairofrailsinthecenteraretested.1.2Applicationofthistestmethodislimitedtocontinuous-fiberordiscontinuous-fiber-reinforcedpolymermatrixcompositesinthefollowingmaterialforms:1.2.1Laminatescomposedonlyofunidirectionalfibrouslaminae,withthefiberdirectionorientedeitherparallelorperpendiculartothefixturerails.1.2.2Laminatescomposedonlyofwovenfabricfilamentarylaminaewiththewarpdirectionorientedeitherparallelorperpendiculartothefixturerails.1.2.3Laminatesofbalancedandsymmetricconstruction,withthe0directionorientedeitherparallelorperpendiculartothefixturerails.1.2.4Short-fiber-reinforcedcompositeswithamajorityofthefibersbeingrandomlydistributed.Note1Additionaltestmethodsfordeterminingin-planeshearpropertiesofpolymermatrixcompositesmaybefoundinTestMethodsD5379/D5379MandD5448/D5448M,andPracticeD3518/D3518M.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundsunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.
【中国标准分类号】:G31
【国际标准分类号】:83_140_20
【页数】:13P.;A4
【正文语种】:英语