DIN IEC 60317-2-1991 特种绕组线规范.第2部分:带粘合层的可焊接的聚氨基甲酸乙酯漆包圆铜绕组线.130级

上一篇: DIN IEC 60068-2-28-1991 电器技术.基本环境试验规程.湿热试验导则
下一篇: DIN IEC 60384-15-1991 电子设备固定电容器.第15部分:分规范:固体或非固体电解质固定钽电容器

【英文标准名称】:StandardTestMethodforConditionMonitoringofPhosphateAntiwearAdditivesinIn-ServicePetroleumandHydrocarbonBasedLubricantsbyTrendAnalysisUsingFourierTransformInfrared(FT-IR)Spectrometry
【原文标准名称】:使用傅里叶变换红外(FT-R)光谱法通过趋势分析对使用中的石油和碳氢化合物基润滑剂中的磷酸酯抗磨剂进行状态监控的标准试验方法
【标准号】:ASTMD7412-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【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】:(TestMethod)
【标准水平】:()
【中文主题词】:条件控制
【英文主题词】:conditionmonitoring;differentialtrendanalysis;directtrendanalysis;Fouriertransforminfrared;FT-IR;hydrocarbonbasedlubricants;in-servicepetroleumlubricants;infrared;IR;lubricants;oils;phosphateantiwear
【摘要】:Antiwearadditivesarecommonlyusedinpetroleumandhydrocarbonbasedlubricantstopreventmachinerywearbyformingachemicalbarrieractivatedbyfrictionalheat.AntiwearadditivesthatarephosphatebasedcanbemeasuredbyFT-IRspectroscopyusingthephosphateabsorptionband.Initially,phosphateantiwearadditiveswilldecomposeandformaprotectivefilmbybindingtometalsurfacesandthroughoxidativemechanisms,andsoadecreaseinthelevelofphosphateantiwearadditiverelativetothatinthenewoilisexpectedduringnormalmachineryoperation.Subsequently,significantdepletionofphosphateantiwearadditivesduetooxidationorhydrolysiscanoccurwhenthelubricantissubjectedtohightemperaturesandhighlevelsofmoisture.Thisusuallyoccurspriortothepointwheretheoxidationofthelubricantbeginstoacceleratex2014;makingtrendingofphosphateantiwearadditivesausefulindicatorofthelubricantx2019;sremainingin-servicelife.Monitoringofphosphateantiwearadditivedepletionisthereforeanimportantparameterindeterminingoverallmachineryhealthandshouldbeconsideredinconjunctionwithdatafromothertestssuchasatomicemission(AE)andatomicabsorption(AA)spectroscopyforwearmetalanalysis(TestMethodD5185),physicalpropertytests(TestMethodsD445,D2896,andD6304)andotherFT-IRoilanalysismethodsforoxidation(TestMethodD7414),sulfateby-products(TestMethodD7415),nitration,breakdownproductsandexternalcontaminants(PracticeE2412),whichalsoassesselementsoftheoilx2019;scondition,seeRefs(1-6).1.1Thistestmethodcoversmonitoringphosphateantiwearadditivesinin-servicepetroleumandhydrocarbonbasedlubricantssuchasvarioustypesofengineoils,hydraulicoils,andotherlubricantsthatareformulatedforprotectionagainstwear.Typicalphosphateantiwearadditivesincludezincdialkyldithiophosphates,trialkylphosphatesandtriarylphosphates.1.2ThistestmethodusesFourierTransformInfrared(FT-IR)spectrometryformonitoringofphosphateantiwearadditivedepletioninin-servicepetroleumandhydrocarbonbasedlubricantsasaresultofnormalmachineryoperation.Monitoringthedepletionofphosphateantiwearadditivesinin-servicelubricantscanindicateunusualwearorsevereoperatingconditionsofthemachine.Thistestmethodisdesignedasafast,simplespectroscopiccheckformonitoringofphosphateantiwearadditivesinin-servicepetroleumandhydrocarbonbasedlubricantswiththeobjectiveofhelpingdiagnosetheoperationalconditionofthemachinebasedonmeasuringthelevelofphosphateantiwearadditivesintheoil.1.3AcquisitionofFT-IRspectraldataformeasuringphosphateantiwearadditivesinin-serviceoilandlubricantsamplesisdescribedinPracticeD7418.Inthistestmethod,measurementanddatainterpretationparametersforphosphateantiwearadditivesusingbothdirecttrendanalysisanddifferential(spectralsubtraction)trendanalysisarepresented.1.4Thistestmethodisbasedontrendingofspectralchangesassociatedwithphosphateantiwearadditivesinin-servicepetroleumandhydrocarbonbasedlubricants.Warningsoralarmlimitscanbesetonthebasisofafixedminimumvalueforasinglemeasurementor,alternatively,canbebasedonarateofchangeoftheresponsemeasured,seeRef(1).1.4.1Fordirecttrendanalysis,valuesarerecordeddirectlyfromabsorptionspectraandreportedinunitsofabsorbanceper0.1mmpathlength.1.4.2Fordifferentialtrendanalysis,valuesarerecordedfromthedifferential......
【中国标准分类号】:
【国际标准分类号】:75_100
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Anechoicchambers-Part2:Alternativetestsitesuitabilitywithrespecttositeattenuation;GermanversionEN50147-2:1996
【原文标准名称】:消声室.第2部分:备选消声测试场的适用性要求
【标准号】:DINEN50147-2-1996
【标准状态】:作废
【国别】:德国
【发布日期】:1996-07
【实施或试行日期】:1996-07-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:测量;测量技术;电气工程;测量台;测量室;屏蔽的;无线电干扰;特性;试验;规范(验收);定义
【英文主题词】:Absorbers;Booths;Braidshieldings;Damping;Definitions;Electricalengineering;Electromagneticcompatibility;Fieldmeasurement;Measurement;Measuringdesks;Measuringrooms;Measuringtechniques;Properties;Radiatedemissions;Radiodisturbances;Rooms;Screeningattenuation;Screeningeffect;Shielded;Specification(approval);Suitability;Testing
【摘要】:
【中国标准分类号】:A59
【国际标准分类号】:33_100_01
【页数】:22P.;A4
【正文语种】:德语