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ASTM C1550-2005 纤维增强混凝土挠曲韧性的标准试验方法(利用中心负载圆形板)

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【英文标准名称】:StandardTestMethodforFlexuralToughnessofFiberReinforcedConcrete(UsingCentrallyLoadedRoundPanel)
【原文标准名称】:纤维增强混凝土挠曲韧性的标准试验方法(利用中心负载圆形板)
【标准号】:ASTMC1550-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:C09.42
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:增强混凝土;纤维增强的;板条;混凝土;加筋混凝土;中心的;韧性
【英文主题词】:energyabsorption;fiber-reinforcedconcrete;flexure;post-crackbehavior;toughness;
【摘要】:1.1Thistestmethodcoversthedeterminationofflexuraltoughnessoffiber-reinforcedconcreteexpressedasenergyabsorptioninthepost-crackrangeusingaroundpanelsupportedonthreesymmetricallyarrangedpivotsandsubjectedtoacentralpointload.Theperformanceofspecimenstestedbythismethodisquantifiedintermsoftheenergyabsorbedbetweentheonsetofloadingandselectedvaluesofcentraldeflection.1.2Thistestmethodprovidesforthescalingofresultswheneverspecimensdonotcomplywiththetargetthicknessanddiameter,aslongasdimensionsdonotfalloutsideofgivenlimits.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_40
【页数】:13P.;A4
【正文语种】:


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【英文标准名称】:StandardTestMethodforDeterminationofYieldStressandApparentViscosityofEngineOilsatLowTemperature
【原文标准名称】:低温下发动机油的屈服应力和表观粘度用标准试验方法
【标准号】:ASTMD4684-2007
【标准状态】:现行
【国别】:美国
【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(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:低温;润滑剂;石油产品;试验;粘度;屈服应力
【英文主题词】:Lowtemperatures;Lubricants;Petroleumproducts;Testing;Viscosity;Yieldstress
【摘要】:
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:13P;A4
【正文语种】:英语


【英文标准名称】:StandardPracticeforStrain-ControlledFatigueTesting
【原文标准名称】:应变控制疲劳试验的标准实施规程
【标准号】:ASTME606-2004e1
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E08.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:疲劳试验;机械试验;金属;工艺;波幅;试验
【英文主题词】:
【摘要】:1.1Thispracticecoversthedeterminationoffatiguepropertiesofnominallyhomogeneousmaterialsbytheuseoftestspecimenssubjectedtouniaxialforces.Itisintendedasaguideforfatiguetestingperformedinsupportofsuchactivitiesasmaterialsresearchanddevelopment,mechanicaldesign,processandqualitycontrol,productperformance,andfailureanalysis.Whilethispracticeisintendedprimarilyforstrain-controlledfatiguetesting,somesectionsmayprovideusefulinformationforforce-controlledorstress-controlledtesting.1.2Theuseofthispracticeislimitedtospecimensanddoesnotcovertestingoffull-scalecomponents,structures,orconsumerproducts.1.3Thispracticeisapplicabletotemperaturesandstrainratesforwhichthemagnitudesoftime-dependentinelasticstrainsareonthesameorderorlessthanthemagnitudesoftime-independentinelasticstrains.Norestrictionsareplacedonenvironmentalfactorssuchastemperature,pressure,humidity,medium,andothers,providedtheyarecontrolledthroughoutthetest,donotcauselossoforchangeindimensionwithtime,andaredetailedinthedatareport.Note18212;Theterminelasticisusedhereintorefertoallnonelasticstrains.Thetermplasticisusedhereintoreferonlytothetime-independent(thatis,noncreep)componentofinelasticstrain.Totrulydetermineatime-independentstraintheforcewouldhavetobeappliedinstantaneously,whichisnotpossible.Ausefulengineeringestimateoftime-independentstraincanbeobtainedwhenthestrainrateexceedssomevalue.Forexample,astrainrateof1103sec1isoftenusedforthispurpose.Thisvalueshouldincreasewithincreasingtesttemperature.1.4ThispracticeisrestrictedtothetestingofuniformgagesectiontestspecimenssubjectedtoaxialforcesasshowninFig.1(a).Testingislimitedtostrain-controlledcycling.Thepracticemaybeappliedtohourglassspecimens,seeFig.1(b),buttheuseriscautionedaboutuncertaintiesindataanalysisandinterpretation.Testingisdoneprimarilyunderconstantamplitudecyclingandmaycontaininterspersedholdtimesatrepeatedintervals.Thepracticemaybeadaptedtoguidetestingformoregeneralcaseswherestrainortemperaturemayvaryaccordingtoapplicationspecifichistories.Dataanalysismaynotfollowthispracticeinsuchcases.
【中国标准分类号】:H22
【国际标准分类号】:77_040_10
【页数】:16P.;A4
【正文语种】: