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【英文标准名称】:StandardTestMethodforDeterminingtheSuperplasticPropertiesofMetallicSheetMaterials
【原文标准名称】:测定金属薄板材的超塑性特性的标准试验方法
【标准号】:ASTME2448-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:E28.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:测定;金属材料;特性;薄板材;试验
【英文主题词】:constantstrainrate;metallicmaterials;mvalue;SPF;superplasticforming;superplasticproperties;temperature;truestrain;truestress
【摘要】:Thedeterminationofthesuperplasticpropertiesofametallicsheetmaterialisimportantfortheobservation,developmentandcomparisonofsuperplasticmaterials.ItisalsonecessarytopredictthecorrectformingparametersduringanSPFprocess.SPFtensiletestinghaspeculiarcharacteristicscomparedtoconventionalmechanicaltesting,whichdistortthetruevaluesofstress,strain,strainhardening,andstrainrateattheverylargeelongationsencounteredinanSPFpulltest,consequentlyconventionalmechanicaltestmethodscannotbeused.Thistestmethodaddressesthosecharacteristicsbyoptimizingtheshapeofthetestcouponandspecifyinganewtestprocedure.Theevaluationofasuperplasticmaterialcanbedividedintotwoparts.Firstly,thebasicsuperplastic-forming(SPF)propertiesofthematerialaremeasuredusingthefourparametersofstress,temperature,strain,andstrainrate.Theseareobtainedusingconversionsfromtherawdataofatensiletest.Secondly,derivedpropertiesusefultodefineanSPFmaterialareobtainedfromthebasicpropertiesusingspecificequations.1.1Thistestmethoddescribestheprocedurefordeterminingthesuperplasticformingproperties(SPF)ofametallicsheetmaterial.ItincludestestsbothforthebasicSPFpropertiesandalsoforderivedSPFproperties.Thetestforbasicpropertiesencompasseseffectsduetostrainhardeningorsoftening.1.2Thistestmethodcoverssheetmaterialswiththicknessesofatleast0.5mmbutnotgreaterthan6mm.Itcharacterizesthematerialunderauni-axialtensilestresscondition.Note18212;Mostindustrialapplicationsofsuperplasticforminginvolveamulti-axialstressconditioninasheet;howeveritismoreconvenienttocharacterizeamaterialunderauni-axialtensilestresscondition.Testsshouldbeperformedindifferentorientationstotherollingdirectionofthesheettoascertaininitialanisotropy.1.3Thismethodhasbeenusedsuccessfullybetweenstrainratesof10-5to10-1persecond.1.4ThismethodhasbeenusedsuccessfullyonAluminumandTitaniumalloys.Theuseofthemethodwithothermetalsshouldbeverified.1.5ThevaluesgiveninSIunitsaretobeconsideredthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:H46
【国际标准分类号】:77_140_50
【页数】:7P.;A4
【正文语种】:


【英文标准名称】:Lampcapsandholderstogetherwithgaugesforthecontrolofinterchangeabilityandsafety;part2:lampholders;supplement11toIEC60061-2(1969)
【原文标准名称】:灯头、灯座及检验其互换性和安全性的量规.第2部分:灯座.IEC60061-2-69标准的第11次补充
【标准号】:IEC60061-2L-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-02
【实施或试行日期】:
【发布单位】:国际电工委员会(IEC)
【起草单位】:IEC/SC34C
【标准类型】:()
【标准水平】:()
【中文主题词】:电灯;可置换性;灯座;量规;运载工具;电气工程;卡口灯座;灯头;灯尺寸;灯尺寸;灯尺寸;架设(施工作业);安全;检验
【英文主题词】:lampdimension;erecting(constructionoperation);lampcaps;replaceability;electriclamps;electricalengineering;vehicles;checks;safety;bayonetlampholder;gauge;lampholders
【摘要】:
【中国标准分类号】:K74
【国际标准分类号】:29_140_10
【页数】:21P;A4*
【正文语种】:英语