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【英文标准名称】:StandardTestMethodforApparentBendingModulusofPlasticsbyMeansofaCantileverBeam
【原文标准名称】:悬臂梁法测定塑料的表观弯曲模量的标准试验方法
【标准号】:ASTMD747-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:
【英文主题词】:apparentbendingmodulus;bendingmovement;cantileverbeam;stiffness;Apparentbendingmodulus;Cantilevertesting;Deformation--plastics;Bendingmoment;Flexibility--plastics;Stiffness--plastics
【摘要】:Thistestmethodprovidesameansofderivingtheapparentbendingmodulusofamaterialbymeasuringforceandangleofbendofacantileverbeam.Themathematicalderivationassumessmalldeflectionsandpurelyelasticbehavior.Underactualtestconditions,thedeformationhasbothelasticandplasticcomponents.Thistestmethoddoesnotdistinguishorseparatethese,andhenceatrueelasticmodulusisnotcalculable.Instead,anapparentvalueisobtainedandisdefinedastheapparentbendingmodulusofthematerial.ThetangentmodulusobtainedbyTestMethodsD790ispreferred,whenthematerialcanbetestedbytheTestMethodsD790testprocedure.Becauseofdeviationsfrompurelyelasticbehavior,changesinspanlength,width,anddepthofthespecimenwillaffectthevalueoftheapparentbendingmodulusobtained;therefore,valuesobtainedfromspecimensofdifferentdimensionsarenotnecessarilycomparable.Rateofloadingiscontrolledonlytotheextentthattherateofangularchangeoftherotatingjawisfixedat58to66x00B0;/min.Actualrateofstressingwillbeaffectedbyspanlength,width,depthofthespecimen,andweightofthependulum.Formanymaterials,therearespecificationsthatrequiretheuseofthistestmethod,butwithsomeproceduralmodificationsthattakeprecedencewhenadheringtothespecification.Therefore,itisadvisabletorefertothatmaterialspecificationbeforeusingthistestmethod.Table1ofClassificationSystemD4000liststheASTMmaterialsstandardsthatcurrentlyexist.Note28212;Adiscussionofthetheoryofobtainingapurelyelasticbendingmodulus,usingacantileverbeamtestingapparatus,canbefoundinAppendixX1.Theresultsobtainedunderactualtestconditionswillbetheapparentbendingmodulus.1.1Thistestmethodcoversthedeterminationoftheapparentbendingmodulusofplasticsbymeansofacantileverbeam.Itiswellsuitedfordeterminingrelativeflexibilityofmaterialsoverawiderange.ItisparticularlyusefulformaterialstooflexibletobetestedbyTestMethodsD790.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:6P.;A4
【正文语种】:英语


【英文标准名称】:CorrigendumtoDINEN12508:2000-09
【原文标准名称】:DINEN12508:2000-09的勘误
【标准号】:DINEN12508Berichtigung1-2001
【标准状态】:作废
【国别】:德国
【发布日期】:2001-01
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:材料试验;金属;定义;分类;术语;多语种的;自动计数系统;防腐蚀;词汇;电镀;无机物的;德语;电技术;覆层;表面处理;英语;法语
【英文主题词】:Classification;Coatings;Corrosionprotection;Definitions;Englishlanguage;Frenchlanguage;Galvanization;Galvanotechnics;Germanlanguage;Inorganic;Materialstesting;Metals;Multilingual;Registersystems;Surfacetreatment;Terms;Vocabulary
【摘要】:Thedocumentdefinesanumberofgenerictermsrelatingtovariousprocessedofsurfacetreatment.Thelistisnotcompleteandonlycomprisesthosetermsconsiderednecessarytoclarifythescopeofsuchprocesses.Thedocumentalsoestablishestheglossaryforelectroplatingandrelatedprocesses.Itincludestermswidelyusedinthescienceandindustryofelectrodepositionandmetalfinishing.
【中国标准分类号】:A29
【国际标准分类号】:01_040_25;25_220_40;25_220_99
【页数】:1P;A4
【正文语种】:德语