【英文标准名称】:StandardTestMethodforAnnealingPointandStrainPointofGlassbyBeamBending
【原文标准名称】:用梁弯曲法测定玻璃的软化点和应变点的标准试验方法
【标准号】:ASTMC598-1993(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1993
【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】:C14.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Annealingstrain;Beambendingtest;Glass;Straintesting--glass
【摘要】:ThistestmethodoffersanalternateproceduretoTestMethodC336fordeterminingtheannealingandstrainpointsofglass.Itisparticularlyrecommendedforglassesnotadaptabletoflameworking.Alsofewercorrectionsarenecessaryindatareduction.1.1Thistestmethodcoversthedeterminationoftheannealingpointandthestrainpointofaglassbymeasuringtherateofmidpointviscousbendingofasimplyloadedglassbeam.However,attemperaturescorrespondingtotheannealingandstrainpoints,theviscosityofglassishighlytime-dependent.Hence,anyviscositiesthatmightbederivedorinferredfrommeasurementsbythisprocedurecannotbeassumedtorepresentequilibriumstructuralconditions.1.2TheannealingandstrainpointsshallbeobtainedfollowingaspecifiedprocedureafterdirectcalibrationoftheapparatususingbeamsofstandardglasseshavingknownannealingandstrainpointssuchasthosesuppliedandcertifiedbytheNationalInstituteofStandardsandTechnology.1.3Thistestmethod,asanalternativetoTestMethodC336isparticularlywellsuitedforglassesthatforonereasonoranotherarenotadaptableforflameworking.Italsohastheadvantagesthatthermalexpansionandeffectivelengthcorrections,commontothefiberelongationmethod,areeliminated.1.4Thevaluesstatedinmetricunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q30
【国际标准分类号】:81_040_10
【页数】:5P.;A4
【正文语种】:英语


MIL-STD-1595A, MILITARY STANDARD: QUALIFICATION OF AIRCRAFT, MISSILE & AEROSPACE FUSION WELDERS (26 FEB 1982) [S/S BY SAE-AMS-STD-1595]., This standard establishes the procedure for qualification of welders and welding operators engaged in the welding of aircraft, missiles, other aerospace equipment, and their parts and accessories by fusion welding processes. This standard is applicable to aircraft, missile, and aerospace ground support equipment or other welding, when included in the contracting documents or when invoked in the absence of a specified welder qualification document.