【英文标准名称】:Methodsoftestingplastics-Mechanicalproperties-Flexuralvibration-Non-resonancemethod
【原文标准名称】:塑料试验方法.机械性能.弯曲振动.非共振法
【标准号】:BS2782-3Method323B-1996
【标准状态】:现行
【国别】:英国
【发布日期】:1996-12-15
【实施或试行日期】:1996-12-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:弯曲振动试验法;定义;测定;动态试验;机械性能;塑料;高聚物;试验;杨氏模量
【英文主题词】:Bendingvibrationtests;Definition;Definitions;Determination;Dynamictesting;Mechanicalproperties;Plastics;Polymers;Testing;Young'smodulus
【摘要】:ThispartofISO6721describesaflexural,non-resonancemethodfordeterminingthecomponentsoftheYoung'scomplexmodulusEofpolymersatfre-quenciestypicallyintherange0,01Hzto100Hz.Themethodissuitableformeasuringdynamicstoragemoduliintherange10MPato200GPa.Althoughmaterialswithmodulilessthan10MPamaybestudied,moreaccuratemeasurementsoftheirdy-namicpropertiescanbemadeusingshearmodesofdeformation(seepart6ofISO6721).Thismethodisparticularlysuitedtothemeasurementoflossfactorsgreaterthan0,1andmaythereforebeconvenientlyusedtostudythevariationofdynamicpropertieswithtemperatureandfrequencythroughmostoftheglass-rubberrelaxationregion(seeISO6721-1:1994,subclause9.4).Theavailabilityofdatadeterminedoverwiderangesofbothfrequencyandtemperatureenablesmasterplotstobederived,usingfrequency/temperatureshiftprocedures,whichpresentdynamicpropertiesoveranextendedfre-quencyrangeatdifferenttemperatures.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:16P.;A4
【正文语种】:英语


【英文标准名称】:StandardClassificationofChrome,Chrome-Magnesia,Magnesia-Chrome,andMagnesiaBrick
【原文标准名称】:铬砖、铬镁砖、镁铬砖和镁砖的标准分类
【标准号】:ASTMC455-2007
【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】:C08.92
【标准类型】:(Classification)
【标准水平】:()
【中文主题词】:砖;铬;分类系统;菱镁矿;耐火材料
【英文主题词】:brick;chrome;classification;magnesiumoxide;magnesia;MgO;refractories
【摘要】:Thisclassificationcategorizesthedefinedtypesofrefractorybrick,withtheexceptionofchromebrick,intodistinctclassesbasedonanominalandminimalvalueformagnesiumoxidecontent.Chromebrickaretreatedasaseparateclasswithoutreferencetomagnesiumoxidecontent.Suchclasseshavehistoricallybeengenerallyusefulinrelatingthedefinedtypestospecificindustrialapplicationsandindevelopingproductorpurchasingspecifications.1.1Thisclassificationcategorizesmachine-maderefractorybrickdefinedaschrome,chrome-magnesia,magnesia-chrome,andmagnesiabrick(see3.1).Itdoesnotcoverproductsmadefromelectricallyfusedmagnesiumoxideortoproductsmadebyfusioncasting.Itspurposeistodescribeclassesdistinguishedbyobviousdifferencesinmagnesiumoxide(MgO)contentexceptforchromebrick.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q40
【国际标准分类号】:81_080
【页数】:2P.;A4
【正文语种】: