ASTM D 7199-2007 用基于力学模式的增强胶合层压木材(胶合层木)梁建立特性值的标准实施规程
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来源:标准资料网
【英文标准名称】:StandardPracticeforEstablishingCharacteristicValuesforReinforcedGluedLaminatedTimber(Glulam)BeamsUsingMechanics-BasedModels
【原文标准名称】:用基于力学模式的增强胶合层压木材(胶合层木)梁建立特性值的标准实施规程
【标准号】:ASTMD7199-2007
【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】:附加试验;调节;梁;弯曲;压缩;设计;耐久性;持续时间;弹性的;环境;胶合的;颗粒;层压的;负荷;力学;方法学;最低要求;模型;预应力的;性能;增强的;加固;安全;适用性;剪切;抗剪钢筋;国际单位制;SI单位;静荷载;硬挺度;强度性
【英文主题词】:
【摘要】:
【中国标准分类号】:B70
【国际标准分类号】:79_060_99
【页数】:11P;A4
【正文语种】:英语
基本信息
| 标准名称： | 纺织品耐氯化色牢度试验方法 |
| 中标分类： |
纺织 >>
纺织综合 >>
基础标准与通用方法 |
| 替代情况： | 被GB/T 8441-1998代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1988-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 纺织 纺织综合 基础标准与通用方法
【英文标准名称】:StandardTestMethodforAcidNumberofPetroleumProductsbySemi-MicroColorIndicatorTitration
【原文标准名称】:半微量颜色指示剂滴定法测定石油产品酸值的标准试验方法
【标准号】:ASTMD3339-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:acidnumber;petroleumproducts;semi-microcolorindicatortitration;Acidnumber--petroleumproducts;Fueloils;Gasturbinefueloils;Isopropylalcohol;Lubricants(fluid);Oxidationtesting--petroleumproducts;Semi-microcolorindicatortitration;T
【摘要】:ThistestmethodmeasurestheacidnumberofoilsobtainedfromlaboratoryoxidationtestsusingsmalleramountsofsamplethanTestMethodsD974orD664.IthasspecificapplicationinTestMethodD943inwhichsmallaliquotsofoilareperiodicallyremovedfortestingbyTestMethodD3339.Thistestmethod,therefore,providesameansofmonitoringtherelativeoxidationofoils,bymeasuringchangesinacidnumber,atdifferenttimeintervalsandunderthevariousoxidizingtestconditions.FIG.1SchematicDrawingofTypicalApparatus1.1Thistestmethodcoversthedeterminationofacidicconstituentsinneworusedpetroleumproductsandlubricantssolubleornearlysolubleinmixturesoftoluene,andisopropylalcohol.ThetestmethodisespeciallyintendedforcasesinwhichtheamountofsampleavailabletobeanalyzedistoosmalltoallowaccurateanalysisbyTestMethodsD974orD664.Itisapplicableforthedeterminationofacidshavingdissociationconstantsinwaterlargerthan10x2212;9.Extremelyweakacidshavingdissociationconstantssmallerthan10x2212;9donotinterfere.Saltstitrateiftheirhydrolysisconstantsarelargerthan10x2212;9.1.2Thistestmethodcanbeusedtoindicaterelativechangesinacidnumberthatoccurinanoilduringuseunderoxidizingconditions.Althoughthetitrationismadeunderdefiniteequilibriumconditions,themethoddoesnotmeasureanabsoluteacidicpropertythatcanbeusedtopredictperformanceofanoilunderserviceconditions.Nogeneralrelationshipbetweenbearingcorrosionandacidnumberisknown.1.3SincethistestmethodrequiressubstantiallylesssamplethanTestMethodsD974orD664,itprovidesanadvantageousmeansofmonitoringanoxidationtestbychangesinacidnumberby(1)minimizingtestsampledepletionforacidnumberanalysesandthusminimizingthedisturbanceofthetestor(2)allowingadditionalacidnumberanalysestobemadewhilemaintainingthesametestsampledepletionandthusprovidingadditionaldata.Note18212;Someoils,suchasmanycuttingoils,rust-proofingoils,andsimilarcompoundedoils,orexcessivelydark-coloredoils,maybemoredifficulttoanalyzebythistestmethodduetoobscurityofthecolor-indicatorendpoint.TheseoilscanbeanalyzedbyTestMethodD664providedsufficientsampleisavailable.However,thissituationismuchlesslikelyusingTestMethodD3339thanusingTestMethodD974duetotheuseofamorehighlydilutesampleduringthetitrationandduetothegreaterstabilityoftheendpointcolorchange.TheacidnumbersobtainedbyTestMethodD3339mayormaynotbenumericallythesameasthoseobtainedbyTestMethodD664buttheyshouldbeofthesameorderofmagnitude.Note28212;TheresultsobtainedusingthismethodhavebeenfoundtobenumericallythesameasthoseobtainedusingTestMethodD974,withintheprecisionofthetwomethods,forneworoxidizedlubricantsofthetypeprimarilyintendedforhydraulicorsteamturbinetypeservice.TheoxidizedlubricantswereobtainedusingtheTestMethodD943oxidationtest.Thiscorrelationisshownbythecorrelationcoefficientr
