1、INTERNATIONA1.STANDARDISO1352editionThird202112Meta1.1.icmateria1.sTorque-contro1.1.edfatiguetestingMatriauxm鼠。I1.iqUeS-Essaisdefatigueparcoup1.edetorsioncommandSORqtg52V2O2!)COPYRIGHTPROTECTEDDOCUMENTISO2021IUirhM*hedbdi1.iUedotherwiseupdhi.o啪InyM1.tta0DmkfifiU81.andonnet8CH-1214Vernier,GenevaPhone
2、M1.227490111觥曲ite：图洲跳触OQrgPub1.ishedinSwitzer1.andISO2021-A1.1.rightsreservedContentsForewordV8.3Samp1.ingconditionsof999.1.3GrippingceI1.119.3Instrumentation121010.3 App1.icationtheisotherma1.1310.7 Fai1.ureFaiIure1411 12AnnexB(informative)Verificationofa1.ignmentoftorsiona1.fatiguetestingmachines
3、20iiiScope1Normativereferences1Termsanddefinitions1Syrmbo1.sandabbreviatedtermsPrinc1.p1.eoftest4Testp1.an5Shapeandsizeofspecimen7.1 Form57.2 Dimensions7Preparationofspecimens8R8.2Machiningprocedure88.4SurfaceandmarkingspecimenIApparatus109.1Testingmachine109.1.1Genera1.109.1.2TorqueOfspccimen9.1.4A
4、1.ignmentcheck119.1.5Axia1.force119.2Heatingsystemfortestmonitoring9.3.1Recordingsystem129.3.2 Cyc1.ecounter9.3.3 Checking311dverification_1213Testprocedure1310.1Mountingofspecimen1310.2Frequencvoftesting1310.4Heatingforoftorquee1.evatedtemperaturetest10.5 Ca1.cu1.ationofnomina1.torsiona1.(shear)str
5、ess10.6 Recordingoftemperatureandhumidity-131410.7.1andterminationcriteria14Measurementuncertainty.一.1514AnnexA(informative)Presentationofresu1.ts16AnnexC(informative)Measuringuniformityoftorsiona1.strain(stress)state22AnnexD(informative)EstimationofmeasurementuncertaintyBib1.iographyISO2021-AHright
6、sreservedForewordthrough(1.SOmittees.workofPreparingbody1.ntemationa1.Standardsisnorma1.1.ytechnica1.e1.ectrotechnica1.standardization.Internationa1.E1.ectrotechnica1.Commission(IEC)ona1.1.mattersofdescribedtypesOf1.SO/IECdOCUmentSshou1.dbePartkU1.ar,documentWasapprova1.accordancewiththeAttcntionrig
7、h1.s.drawnsha1.1.notpossibi1.ityresponsib1.cforidentifyinganythisdOcumen1.patentrights,subjectofconstitutenameendorsement,domentisinformationgivenfortheconvenienceofusersanddoesnotexpressionsre1.ated11ganization(WTO)assessment,asinwe1.1.asinformationBarrierstoTradeadherenceseeSubcommitteeSCwasprepar
8、edhc,11reTechnica1.t.ghn5sCommittee.ISO/TC164,Mechanica1.testin)ofmeta1.s,revised.additionofthetestapparatusandprocedureforthee1.evatedtemperaturetesting;comp1.eteIistingquestionsbodiesthiscandocumentWWWTiMWFgf1.embef4钳川nationa1.standardsbody.ASO2021-A1.1.rightsreservedISO(theInternationa1.Organizat
9、ionforStandardization)isawor1.dwidefederationofnationa1.standardsbodiesmemberbodies).TheEachmemberinterestedinsubjectforwhichcarriedoutcommitteehasbeenestab1.ishedhastherighttoberepresentedonthatcommittee.Internationa1.organizations,governmenta1.andnon-ove11menta1.1.in1.iaisonwithISO,a1.sotakepartin
10、thework.ISOco1.1.aboratesc1.ose1.ywiththeTheproceduresusedtodeve1.opthisdocumentandthoseintendedforitsfurthermaintenancearcvdifferentintheDirectives,Part1.Innotud.ThiSthediffunm1.draftedincriteriaforeditoria1.ru1.esoftheISO/IECDirectives,Part2(seewww.iso.org/direc1.ives).patentISOtothebehe1.dthatsom
11、ethee1.ementsofora1.1.suchmaybetheDetai1.sanypatentrightsidentifiedduringthedeve1.CPnWntCehadgumgn&wi1.1.beintheIntroductionand/orontheISO1.istofpatentdec1.arationsreceived(secwww.iso.org/patents).AnytradeusedinthisForanexp1.anationofthevo1.untarynatureofstandards,themeaningofISOspecifictermsandtheW
12、or1.dTradeconformityprincip1.esJheTechnicaIabout1.SO,s(TBT)1www.iso.org/iso/foreword.htm1.Thisdocument4,FatiguerbyandtestingThisthirdeditioncance1.sandrep1.acesthesecondedition(ISO1352:2011),whichhasbeentechnica1.1.yThemainchangesareasfo1.1.ows:additionofmeasurementuncertaintyestimation.users,Anyfee
13、dbackoroftheseonbefoundatshou1.ddirectedMeta1.1.icmateria1.sTorque-contro1.1.edfatiguetesting1 Scopestresstypica1.1.yCarriedmeta1.1.icatspecimenstemperaturedehbcrate1.yin1.roducingtcmperatureconcentrations.TheWhi1.edescribedinpreparationandComponentspecimensotherspecia1.izedcross-sectiontestingtubu1
14、arcross-section2 Normativereferencesconstitutesrequirements1.atesteditiondocument.referencedreferences,(inc1.udingamendrnents)app1.ies.app1.ies.ISOTermsanddefinitionsVerificationofthea1.ignmentoffatiguetestingmachinesForthepurposesofthisdocument,thefo1.1.owingtermsanddefinitionsapp1.y.ISOOn1.inebro
15、wsingp1.atform:avai1.ab1.eat4Hps/WWWTiS4MH=gebp3.1maximumstressNote1toentrr:See4we4.minimumstressNote1toentry：SeeFigure1.Note1toentry：Itisoneha1.fofthea1.gebraicsumofthemaximumshearstressandtheminimumshearstress：1Thisdocumentspecifiestheconditionsforperformingtorsiona1.,constant-amp1.itude,nomina1.1
16、ye1.asticarefatiguetestsonoutambientwithoutorane1.evatedstressbyapp1.yingapurecoup1.etothespecimenaboutits1.ongitudina1.axis.aretheform,thisdocumentestingofandofcircu1.artypesofandareinc1.uded.Simi1.ar1.y,1.ow-cyc1.etorsiona1.fatiguetestscarriedoutunderconstant-amp1.itudeangu1.ardisp1.acementcontro
17、1.,which1.eadtofai1.ureinafewthousandcyc1.es,area1.soexc1.uded.Thefo1.1.owingdocumentsarereferredtointhetextinsuchawaythatsomeora1.1.oftheircontentundatedreferences,theofthisoftheFordateddocumenton1.yIhcanycditioncitedForISO554:1976,Standardatmospheresforconditioningand/ortestingSpecifications323788
18、Meta1.1.icmateria1.s一ISOandIECmain1.aintermino1.ogydatabasesforuseinstandardizationatthefo1.1.owingaddresses：IECE1.ectropedia:avai1.ab1.eathttps:/www.e1.ectropedia.org/Tmaxhighesta1.gebraicva1.ueofshearstressattheouterdiameterinthestresscyc1.e3.2Ttnin1.owesta1.gebraicva1.ueofshearstressinthestressc
19、yc1.e3.3TmstaticcomponentoftheshearstressISO2021-A1.1.rightsreservedmax+Imin3.4stressamp1.itudervariab1.ecomponentofshearstressNotetoshear1.stress:entry:Itisoneha1.fofthea1.gebraicdifferencebetweenthemaximumshearstressandtheminimum3.5numberofcyc1.esNtestggnberofcyc1.esapp1.iedatanystageduringthestre
20、ssratioRa1.gebraicrat100ftheminimumshearstresstothemaximumshearstressinonecyc1.eNotcfttMJ1.1.rntry:Itisexpressedas:3.7stressrangerrangebetweenthemaximumandminimumshearstressesNote1toentry:Itisexpressedas:3.8fatigue1.ifeatfai1.ureNtgnberofstresscyc1.estofai1.ureinaspecifiedconditionfatiguestrengthatN
21、cyc1.esva1.ueoftheShearSr心Samp1.itude(3.4)atastatedstressratio(3.6)underwhichthespecimenwou1.daIifeOfNcyc1.estorqueMtwistingcoup1.eproducingshearstressortwistingdeformationabouttheaxisofthespecimenISO2021-A1.1.rightsreservedXtimeYstress1onestresscyceFigure1Fatiguestresscyc1.e4Symbo1.sandabbreviatedt
22、ermsDdiameterorwidthacrossf1.atsofthegrippedendsofthespecimendiameterofspecimenofcircu1.arcross-sectiondoouterdiameteroftestsectionofspecimenoftubu1.arcross-sectiondinnerdiameteroftestsectionOfspecimenoftubu1.arcross-section1.gaxia1.separationofstraingaugesippara1.1.e1.1.engthtran544uM-bUnding-radiu
23、satendsoftestsectionwhichstartsthetransitionfromdtoI)(seeFigures3and4)NOTE2tEb6rveS(WIidmAhb(IhtnHtQfrcothi11fbhIrRddOPeVtthie6otfcfSMedkhQnotfttt1.wtahanFigureof-34rwa1.1.thicknessinthetestsectionofthethin-wa1.1.edtubespecimenTspecifiedtemperatureatwhichthetestshou1.dbeperformedindicatedtemperature
24、ormeasuretemperatureonthesurfaceofthepara1.1.e1.1.engthofthe力specimen1.inearnorma1.strainintheOjdirectionsofthe45。strainrosetteb1.inearnorma1.straininthe45*directionsofthe45-strainrosette1.inearnorma1.straininthe90,directionsofthe45,strainrosetteMcircumferentia1.strain1.ongitudina1.strainzshearstrai
25、n5Princip1.eoftestNomina1.1.yidentica1.specimensaremountedonatorsiona1.fatiguetestingmachineandsubjectedtotheIUadin9edcondiHQnrei1wriweb(1Uto1.eswaVfsmaha1.1.faresA(rnstantfitiip1.itudetypeofckrpeofstressThetorqueisapp1.iedtothespecimenaboutthe1.ongitudina1.axispassingthroughthecentroidofthecross-se
26、ction.Thetestiscontinuedunti1.thespecimenfai1.sorunti1.apredeterminednumberofstesscyc1.eshasbeenexceeded.,drBfa)wHprtdtbtoppXnnnW1.yfiWhe1.BSjhmHhdinMphgh1.haCed!Mwwti%bQgminwwrfacediamtiwatethis11InjiJbegreatahanorateqthdtettsection,crackinitiationorfai1.ureoutsidethetestsectioninva1.idatesthetest,
27、whichshou1.dbecountedasadiscontinued(stopped)testatthenumberofcyc1.escomp1.eted.Pf邮f三a御嘀a由dspe陶ftf1.帝蝌Cime总阳帆Moss-section(duea腐怫ncea阳那褚b1.ee1.asticconstraint).Therefore,cautionshou1.dbeexercisedwhencomparingfatigue1.ivesobtainedonthesamemateria1.fromspecimenshavingdifferentcross-sections.Jff1.tntsiy
28、fif1.0Wosen.shc)wnin-Kigwe-S.Itisrecommendedthatendssuitab1.eformeetingtheISO2021-A1.1.rightsreservedKey1sp1.itbar2s1.eeveFigureB.1.-Examp1.eOfa1.ignmentbarFigureB.2Strain-gaugedspecimenAnnexC(informative)Measuringuniformityoftorsiona1.strain(stress)statec.sectionofimportantforspecimenbeobtainedprio
29、rtopossib1.euniformstressdistributionintypica1.1.ycontro1.1.edbyacombinationofthehigheststressandthe1.argestdefectwithinthespecimen.Thefai1.ure(OdaiiionIacjnuHtIitoiyitro1.Iedtby1.oainb)0thhbststressand1xtafttthdai2fititsJfcaOitthf1.isartrinIuniformstressdistributions,a1.1.defectswi1.1.besubjectedto
30、thesamestressandfai1.urewi1.1.occuratthemostcritica1.defect.Fatiguescatterisreducedwhenthetestsectionisincreasedandwhenthestressisuniform.Theuniformityoftheapp1.iedstressiscontro1.1.edbyboththe1.estmachineandthespecimen.Tomeasuretheuniformityoftheapp1.iedtorsiona1.stress,thestraingaugesneedtobeat45o
31、tothespecimenaxis,whichisthedirectionoftheapp1.iedprincipa1.stress.C.2Itisa1.waysbettertose1.ectonerepresentativespecimenfromthegroupofactua1.testspecimenstobestrain-gaugedsothatthemachinecontributionandthespecimencontributiontotheuniformityoftheapp1.iedstressescanbemeasuredatthesametime.Fortorsiona
32、1.testing,itisrecommendedMiitPtte5btruHeiugesi1.1.uff1.tedc)rientedFHFe45,t64a).the)PittpihDis(Htnesanfayctionfr)rfo450tdcrsionspecimenis45otothespecimenaxis.Therefore,sing1.egaugesorientated450tothespecimenaxisorrosetteswi1.1.measuretheprincipa1.stress.Thestraingaugessha1.1.boequa1.1.yspaced,900apa
33、rt,around由IdC1.)也由CiVith市给皓普gitudi潜恪油尚6cimen.axia1.directionsoftherosettesIncasefour-gaugerosettescannotbearrangedinthesamecross-sectiona1.p1.ane,theymaybearrangedintwosetsoftwo-gaugerosettesasshowninFgweC.1.b).Itisrecommendedthata1.1.thestraingaugerosettesbematchedandhaveactive1.engthsofapproximate
34、1.y0,11.por1.ess.C.3adjustnentstemperatureamp1.ifierscheckingShou1.daccomp1.ishedWithequi1.ibratebottomzeroreferencerosette-gaugedspecimensecuredinthegrippingarrangement.tthistime,thespecimenshou1.dbegrippedinboththeupperand1.owergrips.Thestrain-measuringequipmentanddataacquisitionsystemssha1.1.have
35、areso1.utionofat1.east1microstrainandanaccuracytowithin0,5%oftheindicatedreadingor3microstrains,whicheveristhegreater.C.4Thegaugedspecimenshou1.dbe1.oadedintorsiontothetorquecorrespondingtothemaximumtorsiona1.straintobeimposedonspecimensinthetestseries,ifthisva1.uedoesnotexceed0,4%strainofthegaugeds
36、pecimen.Ifstraingaugerosettesareused,thenthenorma1.straincomponentsno11na1.ttinsana1.ysisttoaa1.jgagBirnteMCetia1.dati3阳kS对g*Mnht中CMO1.ImerietedSeriancordjngttoenorma1.straincomponentsinthethreedirections(0oi45oand90o)andatthefourinstrumentedpointsshou1.dbereported.Ifon1.y450straingaugesareused,repo
37、rtthenorma1.straincomponentmeasuredbythe450gauges.C.5thetestingprocedurerotated180o,insta1.1.edconp1.ete1.,strain-gaugedprocedurerepeated.frthecomp1.etionofUiesetwosetsoftorqueapp1.ication,thestraingaugedatacanbeseparatedusingtheguttMiBgo11mibut1.fiOfor23R0BmtffthnsttdWntoiMmtwpCunhetheinfqunIitjono
38、fo1.rtiBnedspebMnBonefobreprteecuitndiwsperiifrawxIthfiiTrosidedistributionwou1.dbeforaperfectspecimen(machinecontributionfornon-uniformstressstate).Ifthespecimencontributiontothenon-uniformstressstateis1.arge,thenmorecareisneededduring曲脚木格环网IYS仅尤加曲黜曲S1.ft三项出FowiftH%E凌三的tt1.H豌甲喧Ih1.he曲醺off1.wmachine
39、C.7everySummaryrSpcdnienxritica1.toobtainthebestuniformstressdistributionwithinthetestsectionofa) Four-gaugerosettesb) twosetsoftro-gaugerosettesKeym=fye=2a-f-frO0-450-90straingaugerosetteFigureC.1.-Strain-gaugedspecimenAnnexD(informative)EstimationofmeasurementuncertaintyD.1.Genera1.D.1.1.-1SOIEC17025(5re
