【英文标准名称】:StandardTestMethodforDeflectionTemperatureofPlasticsUnderFlexuralLoadintheEdgewisePosition
【原文标准名称】:在挠曲负荷下塑料边缘位置弯曲温度的标准测试方法
【标准号】:ASTMD648-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D20.30
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:弯曲试验;负荷;塑料;测试
【英文主题词】:deflectiontemperature;flexuralload;flexure
【摘要】:Thistestisparticularlysuitedtocontrolanddevelopmentwork.Dataobtainedbythistestmethodmaynotbeusedtopredictthebehaviorofplasticmaterialsatelevatedtemperaturesexceptinapplicationsinwhichthefactorsoftime,temperature,methodofloading,andfiberstressaresimilartothosespecifiedinthistestmethod.Thedataarenotintendedforuseindesignorpredictingenduranceatelevatedtemperatures.1.1Thistestmethodcoversthedeterminationofthetemperatureatwhichanarbitrarydeformationoccurswhenspecimensaresubjectedtoanarbitrarysetoftestingconditions.1.2Thistestmethodappliestomoldedandsheetmaterialsavailableinthicknessesof3mm[1/8in.]orgreaterandwhicharerigidorsemirigidatnormaltemperature.Note18212;Sheetstocklessthan3mm[0.125in.]butmorethan1mm[0.040in.]inthicknessmaybetestedbyuseofacompositesamplehavingaminimumthicknessof3mm.Thelaminaemustbeofuniformstressdistribution.Onetypeofcompositespecimenhasbeenpreparedbycementingtheendsofthelaminaetogetherandthensmoothingtheedgeswithsandpaper.Thedirectionofloadingshallbeperpendiculartotheedgesoftheindividuallaminae.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninbracketsareforinformationonly.1.4Duetothepotentialsafetyandenvironmentalhazardsassociatedwithmercury-filledthermometers,theuseofalternativetemperaturemeasuringdevices(suchasthermocouplesorRTDs)isencouraged.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThetestmethoddescribedasaMethodBofthistestmethod,andtestmethodsAeandBeofISO75-1andISO75-2,1993,aretechnicallyequivalent.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:13P.;A4
【正文语种】: