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【英文标准名称】:StandardTestMethodforMeasuringShearStressesofPowdersUsingPeschlRotationalSplitLevelShearTester
【原文标准名称】:用Peschl旋转分层剪切试验器测量粉末剪切应力的标准试验方法
【标准号】:ASTMD6682-2008
【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】:D18.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:bulkdensity;bulksolids;cohesivestrength;degradation;flowability;internalfriction;Peschlsheartester;rotationalsheartester;shearstress;wallfriction;Bulkdensity;Cohesivestrength;Degradation--environmentalmaterials/applicatio
【摘要】:Thetestmethodisusefulforthefollowing:ClassificationofPowders8212;Thecohesionandangleofinternalfrictionareflowabilityindicatorsofpowdersandcanbeusedtoclassifythepowders.QualityControl8212;Foranumberofindustrialapplicationsflowabilityfactorsareusedtocomparethematerialflowabilityatdifferenttimesduringproduction.Thematerialproducedhastobeheldwithingivenlimitsforeachapplicationandeachpowdersoastoensuretrouble-freeoperation.MaterialEngineering8212;Powderpropertiesareinfluencedbyparticlesize,particlesizedistribution,fatcontent,humidityandotherparameters.Byselectingthecorrectparametersandthecorrectmixturesofpowders,therequiredmechanicalpropertiesoftheproductareachieved.DesignofHandlingEquipment8212;Forcertainstorageandconveyorequipmentmathematicalmodelsexistwhichrequirethemechanicalpropertiesofpowders.Note28212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofpersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.PracticeD3740wasdevelopedforagenciesengagedinthetestingorinspection(orboth)ofsoilandrock.Assuchitisnottotallyapplicabletoagenciesperformingthisstandard.However,usersofthisstandardshouldrecognizethattheframeworkofPracticeD3740isappropriateforevaluatingthequalityofanagencyperformingthisstandard.Currentlythereisnoknownqualifyingnationalauthoritythatinspectsagenciesthatperformthisstandard.1.1Thistestmethodisappliedtothemeasurementofthemechanicalpropertiesofpowdersasafunctionofnormalstress.1.2Thisapparatusissuitablemeasuringthepropertiesofpowdersandotherbulksolids,uptoaparticlesizeof5000micron.1.3Thismethodcomprisesfourdifferenttestproceduresforthedeterminationofpowdermechanicalproperties:1.3.1TestA8212;MeasurementofINTERNALFRICTIONasafunctionofnormalstress.1.3.2TestB8212;MeasurementofWALLFRICTIONasafunctionofnormalstress.1.3.3TestC8212;MeasurementofBULKDENSITYasafunctionofnormalstressandtime.1.3.4TestD8212;MeasurementofDEGRADATIONasafunctionofnormalstress.1.4AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.4.1Theproceduresusedtospecifyhowdataarecollected/recordedorcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheuserx2019;so......
【中国标准分类号】:H70
【国际标准分类号】:77_160
【页数】:13P.;A4
【正文语种】:英语