作者:标准资料网 时间:2024-05-13 11:22:24   浏览:8682   来源:标准资料网

【英文标准名称】:StandardPracticeforConditionMonitoringofUsedLubricantsbyTrendAnalysisUsingFourierTransformInfrared(FT-IR)Spectrometry
【原文标准名称】:傅里叶变换红外线(FT-IR)光谱测定法通过趋势分析监测使用过的润滑剂状态的标准实施规程
【标准号】:ASTME2412-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【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】:D02.96
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:additivepackages;basestockdegradation;conditionmonitoring;contamination;Fouriertransforminfrared;FT-IR;fuel;glycol;infrared;IR;lubricatingoils;nitration;oxidation;petroleumbasedextremepressurelubricants;petroleumlubricants;polyo
【摘要】:Periodicsamplingandanalysisoflubricantshavelongbeenusedasameanstodetermineoverallmachineryhealth.Atomicemission(AE)andatomicabsorption(AA)spectroscopyareoftenemployedforwearmetalanalysis(forexample,TestMethodD5185).Anumberofphysicalpropertytestscomplementwearmetalanalysisandareusedtoprovideinformationonlubricantcondition(forexample,TestMethodsD445,D2896,andD6304).MolecularanalysisoflubricantsandhydraulicfluidsbyFT-IRspectroscopyproducesdirectinformationonmolecularspeciesofinterest,includingadditives,fluidbreakdownproductsandexternalcontaminants,andthuscomplementswearmetalandotheranalysesusedinaconditionmonitoringprogram(1,3-7).1.1ThispracticecoverstheuseofFT-IRinmonitoringadditivedepletion,contaminantbuildupandbasestockdegradationinmachinerylubricants,hydraulicfluidsandotherfluidsusedinnormalmachineryoperation.Contaminantsmonitoredincludewater,soot,ethyleneglycol,fuelsandincorrectoil.Oxidation,nitrationandsulfonationofbasestocksaremonitoredasevidenceofdegradation.Theobjectiveofthismonitoringactivityistodiagnosetheoperationalconditionofthemachinebasedonfaultconditionsobservedintheoil.MeasurementanddatainterpretationparametersarepresentedtoallowoperatorsofdifferentFT-IRspectrometerstocompareresultsbyemployingthesametechniques.1.2Thispracticeisbasedontrendinganddistributionresponseanalysisfrommid-infraredabsorptionmeasurements.Whilecalibrationtogeneratephysicalconcentrationunitsmaybepossible,itisunnecessaryorimpracticalinmanycases.Warningoralarmlimits(thepointwheremaintenanceactiononamachinebeingmonitoredisrecommendedorrequired)canbedeterminedthroughstatisticalanalysis,historyofthesameorsimilarequipment,roundrobintestsorothermethodsinconjunctionwithcorrelationtoequipmentperformance.Thesewarningoralarmlimitscanbeafixedmaximumorminimumvalueforcomparisontoasinglemeasurementorcanalsobebasedonarateofchangeoftheresponsemeasured(1).Thispracticedescribesdistributionsbutdoesnotprecludeusingrate-of-changewarningsandalarms.Note18212;Itisnottheintentofthispracticetoestablishorrecommendnormal,cautionary,warningoralertlimitsforanymachinery.Suchlimitsshouldbeestablishedinconjunctionwithadviceandguidancefromthemachinerymanufacturerandmaintenancegroup.1.3Spectraanddistributionprofilespresentedhereinareforillustrativepurposesonlyandarenottobeconstruedasrepresentingorestablishinglubricantormachineryguidelines.1.4Thispracticeisdesignedasafast,simplespectroscopiccheckforconditionmonitoringofin-servicelubricantsandcanbeusedtoassistinthedeterminationofgeneralmachineryhealththroughmeasurementofpropertiesobservableinthemid-infraredspectrumsuchaswater,oiloxidation,andothersasnotedin1.1.Theinfrareddatageneratedbythispracticeistypicallyusedinconjunctionwithothertestingmethods.Forexample,infraredspectroscopycannotdeterminewearmetallevelsoranyothertypeofelementalanalysis.Thepracticeaspresentedisnotintendedforthepredictionoflubricantphysicalproperties(forexample,viscosity,totalbasenumber,totalacidnumber,etc.).Thisprac......
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:24P.;A4
【正文语种】:英语