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:D6054–97AnAmericanNationalStardStardPracticefConditioningElectricalInsulatingMaterialsfTesting1ThisstardisissuedunderthefixeddesignationD6054thenumberimmediatelyfollowingthedesignationindicatestheyearofiginal

2、adoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon(e)indicatesaneditialchangesincethelastrevisionreapproval.1.Scope1.1Thispracticecoversproceduresfconditio

3、ningelectricalinsulatingmaterials(althoughnotnecessarilytoequilibrium)pritotestingtheconditionsunderwhichtheyshallbetested.Ingeneralthephysicalelectricalpropertiesofelectricalinsulatingmaterialsareinfluencedbytemperature

4、relativehuityinamannerthatmateriallyaffectstestresults.Inderthatreliablecomparisonsmaybemadeofdifferentmaterialsbetweendifferentlabatiesitisnecessarytostardizethehuitytemperatureconditionstowhichspecimensofthesematerials

5、aresubjectedpritoduringtesting.1.2ThispracticeissimilartoPracticeD618.1.3Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafety

6、healthpracticesdeterminetheapplicabilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:D618PracticefConditioningPlasticsfTesting2D709SpecificationfLaminatedThermosettingMaterials3D1711TerminologyRelatin

7、gtoElectricalInsulation3D5032PracticefMaintainingConstantRelativeHuitybyMeansofAqueousGlycerinSolutions43.Terminology3.1Definitions:3.1.1roomtemperaturen—atemperatureintherangefrom20to30C.3.1.2stardlabatyatmospheren—anat

8、mospherehavingatemperatureof2362Carelativehuityof5065%.3.1.2.1Discussion—Whereclosertolerancesonatmosphericconditionsarerequired61Contemperature62%onrelativehuitybothmaybespecified.3.1.3stardlabatytemperaturen—atemperatu

9、reof2362C.3.1.4FdefinitionsofothertermsrelatingtoelectricalinsulatingmaterialsrefertoTerminologyD1711.4.SignificanceUse4.1Conditioningofspecimensmaybeundertaken:(1)fthepurposeofbringingthematerialintoequilibriumwithnmala

10、verageroomconditions(2)simplytoobtainreproducibleresults(3)tosubjectthematerialtoabnmalconditionsoftemperaturehuityindertopredictitsservicebehavi.Howeveritisnotwithinthescopeofthispracticetodefineproceduresfdeterminingag

11、ingacteristicsofelectricalinsulatingmaterials.4.2Theconditioningproceduresprescribedinthispracticearedesignedtoobtainreproducibleresultsmaygivevaluessomewhatdifferentfromvaluesunderequilibriumatnmalconditionsdependingupo

12、ntheparticularmaterialtest.Toensuresubstantialequilibriumundernmalconditionsofhuitytemperaturehowevermayrequiremanydaysweeksdependinguponthicknesstypeofmaterialitsprevioushisty.Consequentlyconditioningfreproducibilitymus

13、tofnecessitybeusedfgeneralpurchaseproductcontroltests.4.3Anyreferencetothispracticemustincludetheinfmationneededfdesignatingtheconditioningprocedure(testingprocedureifapplicable)asdefinedinSection7oneofthestardconditioni

14、ngprocedurestobefollowedasdefinedinSection8.5.Sampling5.1SampleinaccdancewiththeASTMothertestmethodspecificationfthespecificpropertiestobedetermined.6.TestSpecimens6.1Preparetestspecimensofthequantitytypespecifiedinthere

15、ferencingstardfthepropertiestobedetermined.1ThispracticeisunderthejurisdictionofASTMCommitteeD9onElectricalElectronicInsulatingMaterialsisthedirectresponsibilityofSubcommitteeD09.12onElectricalTests.Currenteditionapprove

16、dFeb.101997.PublishedAugust1997.2AnnualBookofASTMStardsVol08.01.3AnnualBookofASTMStardsVol10.01.4AnnualBookofASTMStardsVol10.02.1Copyright?ASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959UnitedStates

17、.8.5ProcedureE—Condition4850water123water—Conditionthespecimensbyimmersionindistilleddeionizedwaterf4861?2hat5061Ccoolthembyimmersioninasufficientquantityofdistilleddeionizedwatertoreducethetemperatureto23Cwithin1h.NOTE5

18、—ProceduresDEhavebeenfoundusefulinASTMelectricalmechanicaltestsareusedextensivelyinMILspecifications.8.6ProcedureF—Condition_2396(timeasspecifiedintheapplicablematerialspecification)—Conditionthespecimensinanatmosphereof

19、9661%relativehuityatatemperatureof2361Cfaperiodoftimeasspecifiedintheapplicablematerialspecification.8.6.1Constantrelativehuitycanbeobtainedonlybyclosetemperaturecontrol.Aprocedurefmaintainingclosetolerancesusingaqueousg

20、lycerinsolutionsisdescribedinPracticeD5032.8.6.2Ithasbeenfoundthatfcertaintestsmaterialsmereliabledataareobtainedinenclosureswithcirculatingairratherthanstillair.Insuchcasesuseenclosureswithcirculatingair.9.TestsatNmalTe

21、mperatures9.1Unlessotherwisespecifiedtestmaterialsconditionedinthestardlabatyatmosphereinthesameatmosphere.9.2UnlessotherwisespecifiedtestmaterialsconditionedinaccdancewithProcedureBatroomtemperatureconditions.Startthete

22、stassoonaspossiblebutnomethan1?2hafterremovalofthespecimensfromthedesiccat.9.3UnlessotherwisespecifiedtestmaterialsconditionedinaccdancewithproceduresCFinthesameatmosphere.9.4Unlessotherwisespecifiedwipematerialsconditio

23、nedinaccdancewithProceduresDEimmediatelywithadampcloththenwithadryclothtestthematroomtemperature.Removespecimensfromthewateronlyasthetestsarereadytobeconducted.Startthetestsimmediatelycompletethemassoonaspossible.10.Test

24、satOtherThanNmalTemperatures10.1WhentestsarespecifiedatoneofthestardtemperaturesdefinedinTable1transferthespecimenstothespecifiedtestconditionswithin1?2haftercompletionofthepreconditioning.10.2Holdthespecimenatthetesttem

25、peraturefatleastthetimerequiredtoensureequilibriumtemperaturebutfelevatedtemperaturesnotmethan5hbefeconductingthetest.11.Rept11.1InanyreptofanASTMtestmethodreferencingthispracticereptthefollowinginfmation:11.1.1Fstardcon

26、ditioning:11.1.1.1Conditioningprocedure(Section8)specifiedusedifapplicable11.1.1.2Conditioningdesignation(Section7)specifiedusedifapplicable11.1.1.3Conditioningtimeusedtothenearest1?2hifnotspecifiedintheprocedure.11.1.2F

27、testconditions:11.1.2.1ThetemperaturetothenearestdegreeCelsiustherelativehuity(whereapplicable)tothenearestpercentinthevicinityofthespecimenduringthetestexceptthatifthetestextendslongerthan30minrepttherangesoftemperature

28、relativehuity.11.1.3Theactualrangeoftemperaturerelativehuityifstardtolerancesarenotapplied.12.Keywds12.1conditioningelectricalinsulationhuityrelativehuitytemperatureASTMInternationaltakesnopositionrespectingthevalidityof

29、anypatentrightsassertedinconnectionwithanyitemmentionedinthisstard.Usersofthisstardareexpresslyadvisedthatdeterminationofthevalidityofanysuchpatentrightstheriskofinfringementofsuchrightsareentirelytheirownresponsibility.

30、Thisstardissubjecttorevisionatanytimebytheresponsibletechnicalcommitteemustbereviewedeveryfiveyearsifnotrevisedeitherreapprovedwithdrawn.Yourcommentsareinvitedeitherfrevisionofthisstardfadditionalstardsshouldbeaddressedt

31、oASTMInternationalHeadquarters.Yourcommentswillreceivecarefulconsiderationatameetingoftheresponsibletechnicalcommitteewhichyoumayattend.Ifyoufeelthatyourcommentshavenotreceivedafairhearingyoushouldmakeyourviewsknowntothe

32、ASTMCommitteeonStardsattheaddressshownbelow.ThisstardiscopyrightedbyASTMInternational100BarrHarbDrivePOBoxC700WestConshohockenPA194282959UnitedStates.Individualreprints(singlemultiplecopies)ofthisstardmaybeobtainedbycont

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