【英文标准名称】:StandardTestMethodforImpactTestingofMiniaturizedCharpyV-NotchSpecimens
【原文标准名称】:微型夏比V型冲击试样缺口的标准试验方法
【标准号】:ASTME2248-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:E28.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:fractureappearance;impacttest;instrumentedimpacttest;lateralexpansion;miniaturizedCharpytest;notchedspecimens;pendulummachine
【摘要】:TherearecaseswhereitisimpracticalorimpossibletoprepareconventionalCVNspecimens.MCVNspecimensareanalternativeapproachforcharacterizingnotchedspecimenimpactbehavior.TypicalapplicationsincludeMCVNspecimenspreparedfromthebrokenhalvesofpreviouslytestedspecimens,fromthinproductformmaterial,orfrommaterialcutfromin-servicecomponents.ThisstandardestablishestherequirementsforperformingimpacttestsonMCVNspecimensfabricatedfrommetallicmaterials.Minimumrequirementsaregivenformeasurementandrecordingequipmentsuchthatsimilarsensitivityandcomparablemeasurements,ascomparedtoconventionalCVNtests,areachieved.TheusershouldbeawarethatthetransitionregiontemperaturedependencedataobtainedfromMCVNspecimensarenotdirectlycomparabletothoseobtainedfromfull-sizestandardCharpy-Vspecimensandsuitablecorrelationprocedureshavetobeemployedtoobtainductile-to-brittletransitiontemperature(DBTT)dataequivalenttothoseobtainedusingCVNspecimens.Inallinstances,correlationswillhavetobedevelopedtorelateuppershelfenergy(USE)datafromMCVNtesttoCVNcomparableenergylevels.ApplicationofMCVNtestdatatotheevaluationofferriticmaterialbehavioristheresponsibilityoftheuserofthistestmethod.MCVNtestdatashouldnotbeuseddirectlytodeterminethelowestallowableoperatingtemperatureforanin-servicematerial.Thedatamustbeinterpretedwithintheframeworkofafracturemechanicsassessment.WhilethisTestMethodtreatstheuseofaninstrumentedstrikerasanoption,theuseofinstrumentationintheimpacttestisrecommendedandisfullydescribedinTestMethodE2298.Inordertoestablishtheforce-displacementdiagram,itisnecessarytomeasuretheimpactforceasafunctionoftimeduringcontactofthestrikerwiththespecimen.Theareaundertheforce-displacementcurveisameasureofabsorbedenergy.Asanalternative,absorbedenergymaybeevaluateddirectlyfrommachinedialreading.Wheneverpossible,anopticalencodershallbeusedinplaceofthemachinedialbecauseanencoderhasbetterresolutionthanadial.1.1Thistestmethoddescribesnotched-barimpacttestingofmetallicmaterialsusingMiniaturizedCharpyV-Notch(MCVN)specimensandtestapparatus.Itprovides:(a)adescriptionoftheapparatus,(b)requirementsforinspectionandcalibration,(c)safetyprecautions,(d)sampling,(e)dimensionsandpreparationofspecimens,(f)testingprocedures,and(g)precisionandbias.1.2ThisstandardconcernsMiniaturizedCharpyV-Notchspecimens,forwhichalllineardimensions,includinglengthandnotchdepth,arereducedwithrespecttoatypeAstandardimpacttestspecimeninaccordancewithTestMethodsE23.Thesearenotthesameassub-sizespecimens,describedinAnnexA3ofTestMethodsE23,forwhichlength,notchangleandnotchdeptharethesameasforthestandardtypeACharpyspecimen.Seealso1.5below.1.3ComparisonoftheMCVNdatawithconventionalCharpyV-Notch(CVN)dataorapplicationoftheMCVNdata,orboth,totheevaluationofferriticmaterialbehavioristheresponsibilityoftheuserofthistestmethodandisnotexplicitlycoveredbythistestmethod.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotaddresstestingofsub-sizespecimensasdiscussedinTestMethodsE23.Thereadershouldunderstandthedistinctionbetweenminiatureandsubsiz......
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:6P.;A4
【正文语种】:英语
基本信息
标准名称: | 聚烯烃注塑包装桶 |
英文名称: | Polyolefine injecting packing bucket |
中标分类: |
化工 >>
合成材料 >>
合成材料综合 |
ICS分类: |
橡胶和塑料工业 >>
橡胶和塑料制品 >>
其他橡胶和塑料制品
|
发布部门: | 中华人民共和国国家发展和改革委员会 |
发布日期: | 2006-09-14 |
实施日期: | 2007-05-01 |
首发日期: | |
作废日期: | |
提出单位: | 中国轻工业联合会 |
归口单位: | 全国塑料制品标委会 |
起草单位: | 天津市塑料所、常州威康特塑料有限公司 |
起草人: | 马力、强萱、肖金琦、焦邦杰、李忠林、李军、罗意自 |
出版社: | 中国轻工业出版社 |
出版日期: | 2007-05-01 |
页数: | 6页 |
批文号: | 18954-2006 |
书号: | 155019·2965 |
适用范围
本标准规定了聚烯烃注塑包装桶的分类、要求、试验方法、检验规则与标志、包装、运输、贮存。本标准适用于以聚烯烃为主要原料,经注塑成型而制成的聚烯烃注塑包装桶。
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所属分类: 化工 合成材料 合成材料综合 橡胶和塑料工业 橡胶和塑料制品 其他橡胶和塑料制品