【英文标准名称】:StandardTestMethodforShort-BeamStrengthofPolymerMatrixCompositeMaterialsandTheirLaminates
【原文标准名称】:用短梁法测定平行纤维组合材料表观层间剪切强度的标准试验方法
【标准号】:ASTMD2344/D2344M-2000(2006)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:compositematerials;resinandinterlaminarproperties;short-beamstrength
【摘要】:Inmostcases,becauseofthecomplexityofinternalstressesandthevarietyoffailuremodesthatcanoccurinthisspecimen,itisnotgenerallypossibletorelatetheshort-beamstrengthtoanyonematerialproperty.However,failuresarenormallydominatedbyresinandinterlaminarproperties,andthetestresultshavebeenfoundtoberepeatableforagivenspecimengeometry,materialsystem,andstackingsequence(4).Short-beamstrengthdeterminedbythistestmethodcanbeusedforqualitycontrolandprocessspecificationpurposes.Itcanalsobeusedforcomparativetestingofcompositematerials,providedthatfailuresoccurconsistentlyinthesamemode(5).ThistestmethodisnotlimitedtospecimenswithintherangespecifiedinSection8,butislimitedtotheuseofaloadingspanlength-to-specimenthicknessratioof4.0andaminimumspecimenthicknessof2.0mm[0.08in.].1.1Thistestmethoddeterminestheshort-beamstrengthofhigh-modulusfiber-reinforcedcompositematerials.Thespecimenisashortbeammachinedfromacurvedoraflatlaminateupto6.00mm[0.25in.]thick.Thebeamisloadedinthree-pointbending.1.2Applicationofthistestmethodislimitedtocontinuous-ordiscontinuous-fiber-reinforcedpolymermatrixcomposites,forwhichtheelasticpropertiesarebalancedandsymmetricwithrespecttothelongitudinalaxisofthebeam.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.3ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.
【中国标准分类号】:G33
【国际标准分类号】:83_140_20
【页数】:8P.;A4
【正文语种】:英语


【英文标准名称】:StandardSpecificationforAsphaltRollRoofing(GlassFelt)SurfacedWithMineralGranules
【原文标准名称】:表面撒矿物粉的铺屋面的沥青卷材(玻璃毛毡)标准规范
【标准号】:ASTMD3909-1997b(2004)e1
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:D08.04
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:防水材料;表面;屋顶层;沥青制品;粒状材料;屋面油毡;沥青;施工材料;屋顶;地沥青;建筑
【英文主题词】:asphaltrollroofing;glassfelt;mineralgranules
【摘要】:1.1Thisspecificationcoversasphalt-impregnatedandcoatedglassfeltrollroofingsurfacedontheweathersidewithmineralgranules,foruseasacapsheetintheconstructionofbuilt-uproofs.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.
【中国标准分类号】:Q24
【国际标准分类号】:91_100_50
【页数】:2P.;A4
【正文语种】: