2023年全國碩士研究生考試考研英語一試題真題（含答案詳解+作文范文）_第1頁
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1、Designation:D6393?14StardTestMethodfBulkSolidsacterizationbyCarrIndices1ThisstardisissuedunderthefixeddesignationD6393thenumberimmediatelyfollowingthedesignationindicatestheyearofiginaladoptioninthecaseofrevisiontheyearo

2、flastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thistestmethodcoversanapparatusproceduresfmeasuringpropertiesofbulksolids

3、hencefthreferredtoasCarrIndices.21.2Thistestmethodissuitableffreeflowingmoderatelycohesivepowdersgranularmaterialsupto2.0mminsize.Materialsmustbeabletopourthrougha6.0to8.0mmdiameterfunneloutletwheninanaeratedstate.1.3Thi

4、smethodconsistsofeightmeasurementstwocalculationsfCarrIndicesasfollows.Eachmeasurementcalculationcombinationofthemcanbeusedtoacterizethepropertiesofbulksolids.1.3.1MeasurementofCarrAngleofRepose1.3.2MeasurementofCarrAngl

5、eofFall1.3.3CalculationofCarrAngleofDifference1.3.4MeasurementofCarrLooseBulkDensity1.3.5MeasurementofCarrPackedBulkDensity1.3.6CalculationofCarrCompressibility1.3.7MeasurementofCarrCohesion1.3.8MeasurementofCarrUnifmity

6、1.3.9MeasurementofCarrAngleofSpatula1.3.10MeasurementofCarrDispersibility1.4AllobservedcalculatedvaluesshallconfmtotheguidelinesfsignificantdigitsroundingestablishedinPracticeD6026.1.4.1Theproceduresusedtospecifyhowdataa

7、recollectedrecdedcalculatedinthisstardareregardedastheindustrystard.Inadditiontheyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproceduresuseddonotconsidermaterialvariationpurposefobtainingtheda

8、taspecialpurposestudiesanyconsiderationsftheuser’sobjectives:itiscommonpracticetoincreasereducesignificantdigitsofrepteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstardtoconsidersignificantdigits

9、usedinanalysismethodsfengineeringdesign.1.5Units—ThevaluesstatedinSIunitsaretoberegardedasstard.Nootherunitsofmeasurementareincludedinthisstard.1.6Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithit

10、suse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:3D653TerminologyRelatingtoSoilRockContain

11、edFluidsD2216TestMethodsfLabatyDeterminationofWater(Moisture)ContentofSoilRockbyMassD3740PracticefMinimumRequirementsfAgenciesEngagedinTestingInspectionofSoilRockasUsedinEngineeringDesignConstructionD6026PracticefUsingSi

12、gnificantDigitsinGeotechnicalData3.Terminology3.1DefinitionsofTerms:3.1.1FcommondefinitionsoftermsinthistestmethodrefertoTerminologyD653.4.SummaryofTestMethod4.1CarrAngleofReposeisdeterminedbypingthepowderspecimenthrough

13、avibratingsievefunnelaboveahizontalcircularplatfmmeasuringtheangleofpowderconeinrelationtotheedgeofthecircularplatfm.4.2CarrAngleofFallisdeterminedbymeasuringtheangleofpowderconeinrelationtotheedgeofacircularplatfmaftera

14、pplyingshockimpactstothepowdercone.ThemeasurementisperfmedaftercompletingthemeasurementofCarrAngleofRepose.1ThistestmethodisunderthejurisdictionofASTMCommitteeD18onSoilRockisthedirectresponsibilityofSubcommitteeD18.24ona

15、cterizationHlingofPowdersBulkSolids.CurrenteditionapprovedNov.12014.PublishedNovember2014.iginallyapprovedin1999.Lastpreviouseditionapprovedin2008asD6393–08.DOI:10.1520D639314.2CarrR.L.“EvaluatingFlowPropertiesofSolids”C

16、hemicalEngineeringJanuary181965pp.163–168.3FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sDocumentSummarypageontheASTMwebsite.ASummar

17、yofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959.UnitedStates1massoftheshockerassemblyincludingtheslidingbushingpolespatulabladebladereceiveris0.3

18、to1.0kgdependingonthematerialofconstruction.6.3Adispersibilitymeasuringunitconsistsofacontainer(A)withshuttercover(B)acylindricalglasstube(C)awatchglass(D)(seeFig.3).6.3.1Container—Ahopperunitwithashuttercoveratthebottom

19、tosupptapowderspecimen.Theshuttercoveropenshizontallytoreleasethepowderspecimenwhichthenfallsthroughtheglasstubeontothewatchglass.6.3.2CylindricalGlassTubelocatedvertically160to180mmundertheshuttercovertoconfinethescatte

20、ringdispersedpowder.Thedimensionofthetubeis90to110mmdiameter320to360mmlength.6.3.3WatchGlasscentered100to105mmunderthecylindricalglasstubetocollectundispersedpowder.Thedimensionofwatchglassis90to110mmdiameterabout2.0mmth

21、icknesswiththeradiusofcurvatureofabout96.3mmconcaveupwards.6.4Accessies:6.4.1SpatulaPan—Astainlesssteelpanwithatleasta100.0mmwidtha125.0mmlengtha25.0mmheighta1.0mmthicknessusedtoretainpowderfthepreparationofthemeasuremen

22、tofCarrAngleofSpatula.6.4.2Scoop—Astainlesssteelcontainerusedtotransptpowder.6.4.3Scraper—Achromeplatedbrassstainlesssteelplateusedtoscrapeoffexcesspowderinthecup.6.4.4Cup—A100cm3stainlesssteelcylindricalcontainerwiththe

23、insidedimensionsof49.9to50.1mmdiameter49.9to50.1mmheightusedfCarrBulkDensitymeasurement.Thewallthicknessofthecupis1.3to2.3mm.Theinteriwallsofthecupshallbesufficientlysmooththatmachiningmarksarenotevident.6.4.5CupExtensio

24、n—AwhiteDelrin(trademarked)extensionsleevefthe100cm3measuringcup53.0to55.0mmindiameterby47.0to49.0mminheight.6.4.6FunnelfCarrAngleofRepose—Aglassfunnelwitha6565anglebowlasmeasuredfromthehizontal6.0to8.0mmbottomoutletdiam

25、eteroutletstemlength32.0to36.0mmfthemeasurementofCarrAngleofRepose.6.4.7StationaryChute—Astainlesssteelconicalchutewiththedimensionsof73.0to77.0mmtopdiameter53.0to57.0mmheight48.0to52.0mmbottomdiametertoguidethepowderflo

26、wintothemeasuringcup(see6.4.4).6.4.8VibrationChute—Astainlesssteelconicalchutewiththedimensionsof73.0to77.0mmtopdiameter53.0to57.0mmheight48.0to52.0mmbottomdiameterinstalledonthevibrationplatetoguidethepowderflowtothesta

27、tionarychutecupextension.6.4.9Sievescertified76.0mmdiameterstainlesssteelsieveswithopeningsof710m355m250m150m75m45m.6.4.10SieveExtension—Astainlesssteelextensionpieceusedasaspacerinthevibrationunitwhenonlyonesieveisused.

28、6.4.11SpacerRing—AwhiteDelrin(trademarked)spaceredbetweensievevibrationchuteglassfunneltoprotectthemfromdamage.6.4.12SieveHoldingBar—Achromeplatedbrassholdingbarusedtoholdsieveassemblyonthevibrationplate.6.4.13Panwithbas

29、eftappingdevicemeasuringcupshocker.Astainlesssteelpanatleast200mmlength140mmwidth30mmheight1.0mmthicknessdesignedtoaccepttappingdevicemeasuringcupplatfmaswellasprovideastbasefshocker.NOTE2—Thepanhasmoldedinfeetsoitisslig

30、htlyraisedfromthetabletop.Thishelpsmakevibrationmeconsistent.6.4.14Platfm—Achromeplatedbrasscircularplatfmwithadiameterof79.0to81.0mmaheightof58.0to62.0mmtobeusedfthemeasurementofCarrAngleofRepose.6.4.15Shocker—Aslidingb

31、ushingwithamassof109.0to111.0gataheightof140.0to160.0mmmeasuredfromtheloweredgeofthebushingtotheshockerbasefthemeasurementofCarrAngleofFall.Thetotalmassoftheshockerplatfmpanfthemeasurementofangleoffallis1.1to1.6kg.6.4.16

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