ASTM D6110-2006 测定塑料凹口试样耐摆锤冲击力的标准试验方法

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【英文标准名称】:StandardTestMethodforDeterminingtheCharpyImpactResistanceofNotchedSpecimensofPlastics
【原文标准名称】:测定塑料凹口试样耐摆锤冲击力的标准试验方法
【标准号】:ASTMD6110-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:抗冲击(强度);凹口灵敏度;塑料技术;试验
【英文主题词】:Charpyimpact;impactresistance;notchsensitivity;notchedspecimen;
【摘要】:1.1Thistestmethodisusedtodeterminetheresistanceofplasticstobreakagebyflexuralshockasindicatedbytheenergyextractedfromstandardized(seeNote0)pendulum-typehammers,mountedinstandardizedmachines,inbreakingstandardspecimenswithonependulumswing.Thistestmethodrequiresspecimenstobemadewithamillednotch(seeNote0).Thenotchproducesastressconcentrationwhichpromotesabrittle,ratherthanaductile,fracture.Theresultsofthistestmethodarereportedintermsofenergyabsorbedperunitofspecimenwidth(seeNote0).Note0Themachineswithpendulum-typehammershavebeenstandardizedinthattheymustcomplywithcertainrequirementsincludingafixedheightofhammerfall,whichresultsinasubstantiallyfixedvelocityofthehammeratthemomentofimpact.Hammersofdifferentinitialenergies(producedbyvaryingtheireffectiveweights),however,arerecommendedforusewithspecimensofdifferentimpactresistance.Moreover,manufacturersoftheequipmentarepermittedtousedifferentlengthsandconstructionsofpendulumswithpossibledifferencesinpendulumrigiditiesresulting(seeSection).Beawarethatotherdifferencesinmachinedesigndoexist.Note0Thespecimensarestandardizedinthattheyhaveafixedlengthandfixeddepth,however,thewidthofthespecimensispermittedtovarybetweenlimits.Onedesignofmillednotchisallowed.Thenotchinthespecimenservestoconcentratethestress,minimizeplasticdeformation,anddirectthefracturetothepartofthespecimenbehindthenotch.Scatterinenergy-to-breakisthusreduced.Becauseofdifferencesintheelasticandviscoelasticpropertiesofplastics,however,responsetoagivennotchvariesamongmaterials.Note0Cautionmustbeexercisedininterpretingtheresultsofthistestmethod.Thefollowingtestingparametershavebeenshowntoaffecttestresultssignificantly:methodofspecimenfabrication,includingbutnotlimitedtoprocessingtechnology,moldingconditions,molddesign,andthermaltreatment;methodofnotching;speedofnotchingtool;designofnotchingapparatus;qualityofthenotch;timebetweennotchingandtest;testspecimenthickness;testspecimenwidthundernotch;andenvironmentalconditioning.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note4ThisstandardresemblesISO179intitleonly.Thecontentissignificantlydifferent.
【中国标准分类号】:H22
【国际标准分类号】:83_140_01
【页数】:17P.;A4
【正文语种】: