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【英文标准名称】:StandardTestMethodforCompressivePropertiesofPolymerMatrixCompositeMaterialsUsingaCombinedLoadingCompression(CLC)TestFixture
【原文标准名称】:用组合载荷压缩(CLC)固定试验设备测定聚合体基复合材料层压板压缩特性的标准试验方法
【标准号】:ASTMD6641/D6641M-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:combinedloading;compositematerials;compressivemodulusofelasticity;compressiveproperties;compressivestrength;Poisson'sratio;CLC(combinedloadingcompression)device;Composites;Compressiontesting--composites;Polymermatrixcomposite
【摘要】:Thistestmethodisdesignedtoproducecompressivepropertydataformaterialspecifications,researchanddevelopment,qualityassurance,andstructuraldesignandanalysis.Whentabbed(ProcedureB)specimens,typicallyunidirectionalcomposites,aretested,theCLCtestmethod(combinedshearendloading)hassimilaritiestoTestMethodsD3410/D3410M(shearloading)andD695(endloading).WhentestinglowerstrengthmaterialssuchthatuntabbedCLCspecimenscanbeused(ProcedureA),thebenefitsofcombinedloadingbecomeparticularlyprominent.Itmaynotbepossibletosuccessfullytestuntabbedspecimensofthesesamematerialsusingeitheroftheothertwomethods.Whenspecificlaminatesaretested(primarilyofthe[90/0]nsfamily,althoughotherlaminatescontainingatleastone0x00B0;plycanbeused),theCLCdataarefrequentlyusedtox201C;backoutx201D;0x00B0;plystrength,usinglaminationtheorytocalculatea0x00B0;unidirectionallaminastrength(1,2).Factorsthatinfluencethecompressiveresponseinclude:typeofmaterial,methodsofmaterialpreparationandlay-up,specimenstackingsequence,specimenpreparation,specimenconditioning,environmentoftesting,speedoftesting,timeattemperature,voidcontent,andvolumepercentreinforcement.Compositepropertiesinthetestdirectionthatmaybeobtainedfromthistestmethodinclude:Ultimatecompressivestrength,Ultimatecompressivestrain,Compressive(linearorchord)modulusofelasticity,andPoisson''sratioincompression.1.1Thistestmethoddeterminesthecompressivestrengthandstiffnesspropertiesofpolymermatrixcompositematerialsusingacombinedloadingcompression(CLC)(1)testfixture.Thistestmethodisapplicabletogeneralcompositesthatarebalancedandsymmetric.Thespecimenmaybeuntabbed(ProcedureA)ortabbed(ProcedureB),asrequired.Onerequirementforasuccessfultestisthatthespecimenendsdonotcrushduringthetest.Untabbedspecimensareusuallysuitableforusewithmaterialsofloworthotropy,forexample,fabrics,choppedfibercomposites,andlaminateswithamaximumof50%0x00B0;plies,orequivalent(see6.4).Materialsofhigherorthotropy,includingunidirectionalcomposites,typicallyrequiretabs.1.2Thecompressiveforceisintroducedintothespecimenbycombinedend-andshear-loading.Incomparison,TestMethodD3410/D3410Misapureshear-loadingcompressiontestmethodandTestMethodD695isapureend-loadingtestmethod.1.3Unidirectional(0x00B0;plyorientation)compositesaswellasmulti-directionalcompositelaminates,fabriccomposites,choppedfibercomposites,andsimilarmaterialscanbetested.1.4ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetesttheinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.Note18212;AdditionalproceduresfordeterminingthecompressivepropertiesofpolymermatrixcompositesmaybefoundinTestMethodsD3410/D3410M,D5467,andD695.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,if......
【中国标准分类号】:G31
【国际标准分类号】:83_140_10
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:Secondarycellsandbatteriescontainingalkalineorothernon-acidelectrolytes-Portablesealedrechargeablesinglecells-Nickel-cadmium
【原文标准名称】:含碱或其它非电解质的二次电池和蓄电池.便携式密封可反复充电单电池.镍-镉
【标准号】:BSEN61951-1-2001
【标准状态】:作废
【国别】:英国
【发布日期】:2001-09-06
【实施或试行日期】:2001-09-06
【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】:电池;电解质;蓄电池;可再充电的电池;碱性电池;镍镉电池
【英文主题词】:
【摘要】:
【中国标准分类号】:K80
【国际标准分类号】:29_220_30
【页数】:36P;A4
【正文语种】:英语