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DB15/T 441-2008 内蒙古自治区公路工程质量控制标准土建工程

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基本信息
标准名称:内蒙古自治区公路工程质量控制标准土建工程
发布部门:内蒙古自治区质量技术监督局
发布日期:2008-01-01
实施日期:2008-08-01
首发日期:
作废日期:
出版社:中国标准出版社
出版日期:2008-08-01
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所属分类: 农业 林业 林业 观赏植物 农业 农业和林业
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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】:Specificationforpressboardandpresspaperforelectricalpurposes-Methodsoftest
【原文标准名称】:电气用层压板和层压纸规范.试验方法
【标准号】:BSEN60641-2-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-06-15
【实施或试行日期】:1996-06-15
【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】:厚度测量;密度测量;纸板;收缩性试验;pH值;纸制品;内聚;固体绝缘材料;扯裂试验;电绝缘材料;抗拉试验;试验设备;电气试验;延伸;污染;机械试验;纸;试样制备;层压纸板
【英文主题词】:
【摘要】:
【中国标准分类号】:K15
【国际标准分类号】:29_035_10
【页数】:30P;A4
【正文语种】:英语