【英文标准名称】:StandardTestMethodforMeasuringtheDamageResistanceofaFiber-ReinforcedPolymerMatrixCompositetoaDrop-WeightImpactEvent
【原文标准名称】:测量纤维增强聚合物基体复合材料抗滴重冲击损失的标准试验方法
【标准号】:ASTMD7136/D7136M-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007
【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】:D30.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:compositematerials;damageresistance;drop-weightimpact;impacttesting
【摘要】:1.1Thistestmethoddeterminesthedamageresistanceofmultidirectionalpolymermatrixcompositelaminatedplatessubjectedtoadrop-weightimpactevent.Thecompositematerialformsarelimitedtocontinuous-fiberreinforcedpolymermatrixcomposites,withtherangeofacceptabletestlaminatesandthicknessesdefinedin8.2.1.2Aflat,rectangularcompositeplateissubjectedtoanout-of-plane,concentratedimpactusingadrop-weightdevicewithahemisphericalimpactor.Thepotentialenergyofthedrop-weight,asdefinedbythemassanddropheightoftheimpactor,isspecifiedpriortotest.Equipmentandproceduresareprovidedforoptionalmeasurementofcontactforceandvelocityduringtheimpactevent.Thedamageresistanceisquantifiedintermsoftheresultingsizeandtypeofdamageinthespecimen.1.3Thetestmethodmaybeusedtoscreenmaterialsfordamageresistance,ortoinflictdamageintoaspecimenforsubsequentdamagetolerancetesting.WhentheimpactedplateistestedinaccordancewithTestMethodD7137/D7137M,theoveralltestsequenceiscommonlyreferredtoastheCompressionAfterImpact(CAI)method.Quasi-staticindentationperTestMethodD6264maybeusedasanalternatemethodofcreatingdamagefromanout-of-planeforceandmeasuringdamageresistanceproperties.1.4Thedamageresistancepropertiesgeneratedbythistestmethodarehighlydependentuponseveralfactors,whichincludespecimengeometry,layup,impactorgeometry,impactormass,impactforce,impactenergy,andboundaryconditions.Thus,resultsaregenerallynotscalabletootherconfigurations,andareparticulartothecombinationofgeometricandphysicalconditionstested.1.5ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Withinthetexttheinch-poundunitsareshowninbrackets.Thevaluesstatedineachsystemarenotexactequivalents;therefore,eachsystemmustbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnonconformancewiththestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:83_120
【页数】:16P.;A4
【正文语种】:英语


【英文标准名称】:SPANNERGAPSANDSOCKETS.TOLERANCES.
【原文标准名称】:螺钉螺帽操作工具.扳手间隙或压紧套管.公差
【标准号】:NFE74-300-1984
【标准状态】:作废
【国别】:法国
【发布日期】:1984-12
【实施或试行日期】:1984-11-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:管套扳手;尺寸公差;尺寸;手工工具;扳手;机动工具;螺钉;机床;螺母
【英文主题词】:
【摘要】:
【中国标准分类号】:J47
【国际标准分类号】:
【页数】:2P;A4
【正文语种】:其他