【英文标准名称】:TestMethodforPlane-StrainFractureToughnessandStrainEnergyReleaseRateofPlasticMaterials(08.03)
【原文标准名称】:塑料平面应变裂缝强度和应变能量释放速率测试方法
【标准号】:ANSI/ASTMD5045-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:1997-03-05
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:断裂韧性;塑料;试验方法;机械性能
【英文主题词】:mechanicalproperties;plastics;fracturetoughness;testmethods
【摘要】:Thesetestmethodsaredesignedtocharacterizethetoughnessofplasticsintermsofthecritical-stress-intensityfactor,KIc,andtheenergyperunitareaofcracksurfaceorcriticalstrainenergyreleaserate,GIc,atfractureinitiation.Twotestinggeometriesarecoveredbythesetestmethods,single-edge-notchbending(SENB)andcompacttension(CT).Theschemeusedassumeslinearelasticbehaviorofthecrackedspecimen,socertainrestrictionsonlinearityoftheload-displacementdiagramareimposed.Astate-of-planestrainatthecracktipisrequired.Specimenthicknessmustbesufficienttoensurethisstressstate.Thecrackmustbesufficientlysharptoensurethataminimumvalueoftoughnessisobtained.ThesignificanceofthesetestmethodsandmanyconditionsoftestingareidenticaltothoseofTestMethodE399,and,therefore,inmostcases,appearherewithmanysimilaritiestothemetalsstandard.However,certainconditionsandspecificationsnotcoveredinTestMethodE399,butimportantforplastics,areincluded.ThisprotocolcoversthedeterminationofGIcaswell,whichisofparticularimportanceforplastics.ThesetestmethodsgivegeneralinformationconcerningtherequirementsforKIcandGIctesting.AswithTestMethodE399,twoannexesareprovidedwhichgivethespecificrequirementsfortestingoftheSENBandCTgeometries.Testdataobtainedbythesetestmethodsarerelevantandappropriateforuseinengineeringdesign.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.ThereiscurrentlynoISOstandardthatduplicatesthesetestmethods.PendingISO/CD13586coverssimilartestingandreferencesthistestmethodfortestingconditions.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:
【正文语种】:英语