您的位置: 标准下载 » 协会标准 » ASTM 美国材料与试验协会 »

ASTM D5293-2004 用低温开裂模拟器测定-5~-30℃之间发动机油表观粘度的标准试验方法

作者:标准资料网 时间:2024-05-16 08:24:25  浏览:9573   来源:标准资料网
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforApparentViscosityofEngineOilsBetween-5and-35&176;CUsingtheCold-CrankingSimulator
【原文标准名称】:用低温开裂模拟器测定-5~-30℃之间发动机油表观粘度的标准试验方法
【标准号】:ASTMD5293-2004
【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(ASTM)
【起草单位】:D02.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:润滑油;试验;粘度
【英文主题词】:apparentviscosity;coldcranking;cranking;engineoils;petroleumandpetroleumproducts;viscosity;
【摘要】:TheCCSapparentviscosityofautomotiveengineoilscorrelateswithlowtemperatureenginecranking.CCSapparentviscosityisnotsuitableforpredictinglowtemperatureflowtotheengineoilpumpandoildistributionsystem.EnginecrankingdataweremeasuredbytheCoordinatingResearchCouncil(CRC)L-494testwithreferenceoilsthathadviscositiesbetween600and8400mPax00B7;s(cP)atx2212;17.8x00B0;Candbetween2000and20000mPax00B7;s(cP)atx2212;28.9x00B0;C.ThedetailedrelationbetweenthisenginecrankingdataandCCSapparentviscositiesisinAppendixesX1andX2ofthe1967TeditionofTestMethodD26025andCRCReport409.4BecausetheCRCL-49testismuchlesspreciseandstandardizedthantheCCSprocedures,CCSapparentviscosityneednotaccuratelypredicttheenginecrankingbehaviorofanoilinaspecificengine.However,thecorrelationofCCSapparentviscositywithaverageL-49enginecrankingresultsissatisfactory.ThecorrelationbetweenCCSandapparentviscosityandenginecrankingwasconfirmedattemperaturesbetweenx2212;1andx2212;40x00B0;Cbyworkon17commercialengineoils(SAEgrades5W,10W,15W,and20W).Bothsyntheticandmineraloilbasedproductswereevaluated.SeeASTMSTP621.6AcorrelationwasestablishedinalowtemperatureengineperformancestudybetweenlightdutyenginestartabilityandCCSmeasuredapparentviscosity.Thisstudyusedten1990’enginesattemperaturesrangingfromx2013;5downtox2013;40x00B0;Cwithsixcommercialengineoils(SAE0W,5W,10W,15W,20W,and25W).71.1Thistestmethodcoversthelaboratorydeterminationofapparentviscosityofengineoilsbycoldcrankingsimulator(CCS)attemperaturesbetween-5and-35176;Catshearstressesofapproximately50000to100000Paandshearratesofapproximately105to104s-1andviscositiesofapproximately500to25000mPa183;s.Therangeofaninstrumentisdependentontheinstrumentmodelandsoftwareversioninstalled.Theseresultsarerelatedtoengine-crankingcharacteristicsofengineoils.1.2AspecialprocedureisprovidedinAnnexA1forhighlyviscoelasticoils.1.3Proceduresareprovidedforbothmanualandautomateddeterminationoftheapparentviscosityofengineoilsusingthecold-crankingsimulator.1.4AspecialmanualprocedureisprovidedinAnnexA1forhighlyviscoelasticoils.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificwarningstatementsaregivenin7.1,7.2,7.3,andSection8.
【中国标准分类号】:E34
【国际标准分类号】:75_100
【页数】:9P.;A4
【正文语种】:


下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforDielectricBreakdownVoltageandDielectricStrengthofSolidElectricalInsulatingMaterialsatCommercialPowerFrequencies
【原文标准名称】:固体电绝缘材料在商用电源频率下的介电击穿电压和介电强度的标准试验方法
【标准号】:ASTMD149-2009
【标准状态】:现行
【国别】:美国
【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】:D09.12
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:breakdown;breakdownvoltage;calibration;criteriaofbreakdown;dielectricbreakdownvoltage;dielectricfailure;dielectricstrength;electrodes;flashover;powerfrequency;process-controltesting;prooftesting;quality-controltesting;
【摘要】:Thedielectricstrengthofanelectricalinsulatingmaterialisapropertyofinterestforanyapplicationwhereanelectricalfieldwillbepresent.Inmanycasesthedielectricstrengthofamaterialwillbethedeterminingfactorinthedesignoftheapparatusinwhichitistobeused.Testsmadeasspecifiedhereinaresuitableforusetoprovidepartoftheinformationneededfordeterminingsuitabilityofamaterialforagivenapplication;andalso,fordetectingchangesordeviationsfromnormalcharacteristicsresultingfromprocessingvariables,agingconditions,orothermanufacturingorenvironmentalsituations.Thistestmethodisusefulforprocesscontrol,acceptanceorresearchtesting.Resultsobtainedbythistestmethodcanseldombeuseddirectlytodeterminethedielectricbehaviorofamaterialinanactualapplication.Inmostcasesitisnecessarythattheseresultsbeevaluatedbycomparisonwithresultsobtainedfromotherfunctionaltestsorfromtestsonothermaterials,orboth,inordertoestimatetheirsignificanceforaparticularmaterial.ThreemethodsforvoltageapplicationarespecifiedinSection12:MethodA,Short-TimeTest;MethodB,Step-by-StepTest;andMethodC,SlowRate-of-RiseTest.MethodAisthemostcommonly-usedtestforquality-controltests.However,thelonger-timetests,MethodsBandC,whichusuallywillgivelowertestresults,willpotentiallygivemoremeaningfulresultswhendifferentmaterialsarebeingcomparedwitheachother.Ifatestsetwithmotor-drivenvoltagecontrolisavailable,theslowrate-of-risetestissimplerandpreferabletothestep-by-steptest.TheresultsobtainedfromMethodsBandCarecomparabletoeachother.Documentsspecifyingtheuseofthistestmethodshallalsospecify:Methodofvoltageapplication,Voltagerate-of-rise,ifslowrate-of-risemethodisspecified,Specimenselection,preparation,andconditioning,Surroundingmediumandtemperatureduringtest,Electrodes,Whereverpossible,thefailurecriterionofthecurrent-sensingelement,andAnydesireddeviationsfromtherecommendedproceduresasgiven.Ifanyoftherequirementslistedin5.5aremissingfromthespecifyingdocument,thentherecommendationsfortheseveralvariablesshallbefollowed.Unlesstheitemslistedin5.5arespecified,testsmadewithsuchinadequatereferencetothistestmethodarenotinconformancewiththistestmethod.Iftheitemslistedin5.5arenotcloselycontrolledduringthetest,itispossiblethattheprecisionsstatedin15.2and15.3willnotbeobtained.Variationsinthefailurecriteria(currentsettingandresponsetime)ofthecurrentsensingelementsignificantlyaffectthetestresults.AppendixX1.containsamorecompletediscussionofthesignificanceofdielectricstrengthtests.1.1Thistestmethodcoversproceduresforthedeterminationofdielectricstrengthofsolidinsulatingmaterialsatcommercialpowerfrequencies,underspecifiedconditions.,1.2Unlessotherwisespecified,thetestsshallbemadeat60Hz.However,thistestmethodissuitableforuseatanyfrequencyfrom25to800Hz.Atfrequenciesabove800Hz,dielectricheatingisapotentialproblem.1.3ThistestmethodisintendedtobeusedinconjunctionwithanyASTMstandardorotherdocumentthatreferstothistestmethod.Referencestothisdocumentneedtospecifytheparticularoptionstobeused(see5.5).1.4Itissuitableforuseatvarioustemperatures,andinanysuitablegaseousorliquidsurroundingmedium.1.5Thistestmethodisnotintendedformeasuringthedielectricstrengthofmaterialsthatarefluidundertheconditionsoftest.1.6Thistestmetho......
【中国标准分类号】:K15
【国际标准分类号】:
【页数】:13P.;A4
【正文语种】:英语


【英文标准名称】:Dentistry-Single-usecartridgesforlocalanaesthetics
【原文标准名称】:牙科学.局部麻醉用一次性盒
【标准号】:ISO11499-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-07
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC106
【标准类型】:()
【标准水平】:()
【中文主题词】:安瓿瓶;麻醉学;生物适应性;卡普耳(安瓿);(胶片)盒;弹药;色码;定义;牙科的;牙科设备;牙科器械;牙科学;尺寸;可处置的;一次性使用设备;注射器械;作标记;医学科学;规范(验收);昏迷;测试;测试条件
【英文主题词】:Ampoules;Anaesthesiology;Biocompatibility;Carpules;Cartridges;Cartridges(ammunition);Colourcodes;Definitions;Dental;Dentalequipment;Dentalinstruments;Dentistry;Dimensions;Disposable;Disposables;Equipmentforsingleuse;Injectioninstruments;Marking;Medicalsciences;Specification(approval);Stupor;Testing;Testingconditions
【摘要】:ThisInternationalStandardgivesspecificperformancerequirementsforsingle-usedentalcartridgesof1,8mland2,2mlnominalcapacityforusewithlocalanaesthetics.Itspecifiestestsforleakage,plungermovement,extractablevolumeandunderfilling,andlistsgeneraloveralldimensionstoensurethatthecartridgewillfitdentalcartridgesyringescomplyingwithISO9997.Labellingrequirementsarealsospecified.
【中国标准分类号】:C33
【国际标准分类号】:11_040_10;11_060_20
【页数】:9P;A4
【正文语种】:英语