ASTM D5045-1999(2007)e1 塑料材料平面应变断裂韧性和应变能量释放率的标准试验方法

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【英文标准名称】:StandardTestMethodsforPlane-StrainFractureToughnessandStrainEnergyReleaseRateofPlasticMaterials
【原文标准名称】:塑料材料平面应变断裂韧性和应变能量释放率的标准试验方法
【标准号】:ASTMD5045-1999(2007)e1
【标准状态】:现行
【国别】:
【发布日期】:1999
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:机械性能;断裂韧性;塑料;试验方法
【英文主题词】:critical-strainenergyreleaserate;energy-to-break;fracturetoughness;plane-strainfracturetoughness
【摘要】:p>1.1Thesetestmethodsaredesignedtocharacterizethetoughnessofplasticsintermsofthecritical-stress-intensityfactor,KIc,andtheenergyperunitareaofcracksurfaceorcriticalstrainenergyreleaserate,GIc,atfractureinitiation.1.2Twotestinggeometriesarecoveredbythesetestmethods,single-edge-notchbending(SENB)andcompacttension(CT).1.3Theschemeusedassumeslinearelasticbehaviorofthecrackedspecimen,socertainrestrictionsonlinearityoftheload-displacementdiagramareimposed.1.4Astate-of-planestrainatthecracktipisrequired.Specimenthicknessmustbesufficienttoensurethisstressstate.1.5Thecrackmustbesufficientlysharptoensurethataminimumvalueoftoughnessisobtained.1.6ThesignificanceofthesetestmethodsandmanyconditionsoftestingareidenticaltothoseofTestMethodE399,and,therefore,inmostcases,appearherewithmanysimilaritiestothemetalsstandard.However,certainconditionsandspecificationsnotcoveredinTestMethodE399,butimportantforplastics,areincluded.1.7ThisprotocolcoversthedeterminationofGIcaswell,whichisofparticularimportanceforplastics.1.8ThesetestmethodsgivegeneralinformationconcerningtherequirementsforKIcandGIctesting.AswithTestMethodE399,twoannexesareprovidedwhichgivethespecificrequirementsfortestingoftheSENBandCTgeometries.1.9Testdataobtainedbythesetestmethodsarerelevantandappropriateforuseinengineeringdesign.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】:9P.;A4
【正文语种】: