1、BSISO13094:2025Compositesandreinforcementfibres一Carbonfibrereinforcedplastics(CFRPs)andmetalassembliesCombinedstresstestbsi.NationalforewordThisBritishStandardistheUKimplementationofISO13094:2025.TheUKparticipationinitspreparationwasentrustedtoTechnicalCommitteePRI42,Fibrereinforcedthermosettingplas
2、ticsandprepregs.Alistoforganizationsrepresentedonthiscommitteecanbeobtainedonrequesttoitscommitteemanager.ContractualandlegalconsiderationsThispublicationhasbeenpreparedingoodfaith,howevernorepresentation,warranty,assuranceorundertaking(expressorimplied)isorwillbemade,andnoresponsibilityorliabilityi
3、sorwillbeacceptedbyBSIinrelationtotheadequacy,accuracy,completenessorreasonablenessofthispublication.Allandanysuchresponsibilityandliabilityisexpresslydisclaimedtothefullextentpermittedbythelaw.Thispublicationisprovidedasis,andistobeusedattherecipientsownrisk.Therecipientisadvisedtoconsiderseekingpr
4、ofessionalguidancewithrespecttoitsuseofthispublication.Thispublicationisnotintendedtoconstituteacontract.Usersareresponsibleforitscorrectapplication.TheBritishStandardsInstitution2025PublishedbyBSIStandardsLimited2025ISBN9780539300147ICS83.120CompliancewithaBritishStandardcannotconferimmunityfromleg
5、alobligations.ThisBritishStandardwaspublishedundertheauthorityoftheStandardsPolicyandStrategyCommitteeon30April2025.Amendments/corrigendaissuedsincepublicationDateTextaffectedBSISO13094:2025InternationalStandardISO13094Firstedition2025-04CompositesandreinforcementfibresCarbonfibrereinforcedplastics(
6、CFRPs)andmetalassembliesCombinedstresstestCompositesetfibresderenfortAssemblagesdeplastiquesrenforcesdefibresdecarbone(CFRP)etdemetalEssaissousContraintescombineesReferencenumberISO13094:2025(en)COPYRIGHTPROTECTEDDOCUMENTISO2025Allrightsreserved.Unlessotherwisespecified,orrequiredinthecontextofitsim
7、plementation,nopartofthispublicationmaybereproducedorutilizedotherwiseinanyformorbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutpriorwrittenpermission.PermissioncanberequestedfromeitherISOattheaddressbeloworISO,smemberbodyinthecountryoftherequester.
8、ISOcopyrightofficeCP401Ch.deBlandonnet8CH-1214Vernier,GenevaPhone:+41227490111Email:copyrightiso.orgWebsite:www.iso.orgPublishedinSwitzerlandContentsPageForewordivIntroductionv1 Scope12 Normativereferences13 Termsanddefinitions14 Principle35 Apparatus35.1 Combinedloadingfixture35.2 Tensiletestingmac
9、hine56 Testspecimen57 Conditioning68 Testprocedure69 Calculationofloadsandstresses610 Testreport8AnnexA(informative)Exampleoftestfixtureforcombinedstresstest9AnnexB(informative)ExampleofcombinedstresstestonMetal/CFRPadhesivebondedassembly10Bibliography12ForewordISO(theInternationalOrganizationforSta
10、ndardization)isaworldwidefederationofnationalstandardsbodies(ISOmemberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnicalcommittees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhastherighttoberepresentedonthatcommittee.Internation
11、alorganizations,governmentalandnon-governmental,inliaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnicalCommission(IEC)onallmattersofelectrotechnicalstandardization.Theproceduresusedtodevelopthisdocumentandthoseintendedforitsfurthermaintenancearedescribedinth
12、eISO/IECDirectives,Part1.Inparticular,thedifferentapprovalcriterianeededforthedifferenttypesofISOdocumentshouldbenoted.ThisdocumentwasdraftedinaccordancewiththeeditorialrulesoftheISO/IECDirectives,Part2(seeWWW.iso.org/directives).ISOdrawsattentiontothepossibilitythattheimplementationofthisdocumentma
13、yinvolvetheuseof（八）patent(三).ISOtakesnopositionconcerningtheevidence,validityorapplicabilityofanyclaimedpatentrightsinrespectthereof.Asofthedateofpublicationofthisdocument,ISOhadnotreceivednoticeof（八）patent(三)whichmayberequiredtoimplementthisdocument.HoweverlImplementersarecautionedthatthismaynotrep
14、resentthelatestinformation,whichmaybeobtainedfromthepatentdatabaseavailableatWWW.iso.org/patents.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights.Anytradenameusedinthisdocumentisinformationgivenfortheconvenienceofusersanddoesnotconstituteanendorsement.Foranexplanationofthevoluntary
15、natureofstandards,themeaningofISOspecifictermsandexpressionsrelatedtoconformityassessment,aswellasinformationaboutISOsadherencetotheWorldTradeOrganization(WTO)principlesintheTechnicalBarrierstoTrade(TBT工seeWWW.iso.org/iso/foreword.htmLThisdocumentwaspreparedbyTechnicalCommitteeISO/TC61,Plastics,Subc
16、ommitteeSC13,Compositesandreinforcementfibres.Anyfeedbackorquestionsonthisdocumentshouldbedirectedtotheusersnationalstandardsbody.AcompletelistingofthesebodiescanbefoundatWWW.iso.org/members.html.IntroductionThisdocumentprovidesatestmethodforproducingawell-controlledcombinedstressstateinplane-stress
17、conditions.Thismethodologycanprovideanaccuratemeansforevaluatingthestrengthofbondedmetal-compositeassembliesthatdependsonlyontheinteractionbetweendissimilaradherend,theadhesive,andtheinterfacessubjectedtovariouscombinedloadings.Theresultscanbeusedtocreatethefailureenvelopeformetal-compositeassemblie
18、sforuseinthedesignoptimizationofmetal-compositeassemblies.Theoriginalfixturewasdesignedtostudytheshearpropertiesofpolymerst1landlatermodifiedtoperformcombinedloadtestsforvariousmaterials,includingbondedassembliesofdissimilarmaterials.,3Thisdocumentisintendedtoprovideexperimentalapparatus,testprocedu
19、res,andmanipulationoftheresultfordeterminingthestrengthofadhesive-bondedmetal-CFRP-metalassembliesundercombinedloadingconditions.BSISO13094:2025CompositesandreinforcementfibresCarbonfibrereinforcedplastics(CFRPs)andmetalassemblies一Combinedstresstest1 ScopeThisdocumentspecifiesthetestmethodusedtodete
20、rminethestrengthoftheadhesive-bondedcarbonfibrereinforcedplastics(CFRP)tometalassembliesundercombinedloadingconditions.Theloadingfixture,astandardspecimen,andprocedureforcombinedshearandnormalloadtestsunderplanestressconditionsareprovided.Thetestmethodisalsoapplicabletobondedjointsbetweenmetalsandot
21、hercompositematerials,includingglassfibre-reinforcedplastics.Thisdocumentdoesnotcoverspecimenpreparationoftheadhesivejoint2 NormativereferencesThefollowingdocumentsarereferredtointhetextinsuchawaythatsomeoralloftheircontentconstitutesrequirementsofthisdocument.Fordatedreferences,onlytheeditionciteda
22、pplies.Forundatedreferences,thelatesteditionofthereferenceddocument(includinganyamendments)applies.ISO291,PlasticsStandardatmospheresforconditioningandtestingISO7500-1,MetallicmaterialsCalibrationandverificationofstaticuniaxialtestingmachinesPart1:Tension/compressiontestingmachinesCalibrationandveri
23、ficationoftheforce-measuringsystemISO10365,AdhesivesDesignationofmainfailurepatterns3 TermsanddefinitionsForthepurposesofthisdocument,thefollowingtermsanddefinitionsapply.ISOandIECmaintainterminologydatabasesforuseinstandardizationatthefollowingaddresses: ISOOnlinebrowsingplatform:availableathttps:W
24、WW.iso.org/obp IECElectropedia:availableathttps:/www.electropedia.org/3.1appliedloadFforceappliedintheloadingaxisthatcausessimultaneousshearandnormalstressesonthebondedareaNote1toentry:SeeFigUre1.3.2maximumappliedloadFmaxhighestvalueofforceobservedintheappliedload-displacementcurveNote1toentry:SeeFi
25、gUre4.3.3loadingangleaanglebetweentheloadingaxisandspecimenaxisNote1toentry:SeeFigUre1.3.4normalloadFtforcedevelopedinthebondedareainthedirectionofthespecimenaxisNote1toentry:SeeFigUre1.Note2toentry:FtiscalculatedusingFormulaflj.3.5maximumnormalloadFt,maxvalueofFtdeterminedatFmaxNote1toentry:FtmaY=F
26、maYcos3.6shearloadFSforcedevelopedinthebondedareainthedirectionperpendiculartothespecimenaxisNote1toentry:SeeFigUre1.Note2toentry:FSiscalculatedusingFormula.3.7maximumshearloadFs,maxvalueofFsdeterminedatFmaXNote1toentry:Fcrna=FmaYsin3.8normalstresstforceperunitareadevelopedinthebondingareainthedirec
27、tionofthespecimenaxisduringthecombinedloadtestNote1toentry:tiscalculatedusingFormula.3.9maximumnormalstresst,maxvalueoftdeterminedatFmaXNote1toentry:tmaiscalculatedusingFormula(5).3.10shearstressGSforceperunitareadevelopedinthebondingareainthedirectionperpendiculartospecimenaxisduringthecombinedload
28、testNote1toentry:OSiscalculatedusingFormula(4).3.11maximumshearstresss,maxvalueofsdeterminedatFmaXNote1toentry:smaiscalculatedusingFormulaf6).3.12bondingareaAareaoftheadhesivejointbetweenmetalandcompositeNote1toentry:Thedirectionofbondingareaisparalleltothespecimenaxis(seeFigure1).4 PrincipleTheshea
29、rstressandtensilestressaredeterminedusingasinglefixturethatallowscombinedloadingsbyrotatingthespecimenaxiswithrespecttotheloadingaxis.Theloadingaxisisfixed,andthecombinedloadingonthespecimenisachievedbyloadinganglesthatparallelthespecimenaxis(seeFigure1).Themaximumshearstressandmaximumtensilestressc
30、ombinationsforparticularloadinganglesareobtainedfromthemaximumloaddeterminedfromthemonotonictensiletestontheloadingaxis.5 Apparatus5.1 CombinedloadingfixtureThecombinedloadingfixtureisillustratedinFigure1.Itshallconsistofupperandlowerpartsforholdingthetestspecimen.Thedirectionoftheloadingaxisshallbe
31、fixed,andloadinganglesareachievedthroughgrippingholesmadeatangleincrements.Thespecimengrippingshallbemadeinsuchawaythatnomovement,includingslipping,occursduringthetest.Thefixtureshallbemadefromahigh-strengthmaterialnottocreateacomplianceeffect.NOTE1Itwasfoundthatusingtwoloadguidingbarsinthecombinedl
32、oadingfixture(FigureIjcanpreventpossiblebendingintroducedduringthetest.Italsoprovidesfixturerigidityandeliminatesloadingaxismisalignment.NOTE2Acommerciallyavailableclearance-freeguideunitwithhigh-accuracygradelinearbearinghasbeenusedforlow-frictionslidewaysinguidebars.NOTE3Thedimensionsandshapeofthe
33、fixtureusedinthetestaredescribedinAnneXA.Key1 loadingaxis2 loadingangle()3 specimenaxis4 specimen5 upperpart6 lowerpartFigure1TypicalcombinedloadfixtureThefollowingloadingconditionsshallbeachievedforloadingangles(X)showninFigure2.=0otensileloading090oproportionaltensile/shearloadingOC=90oshearloadin
34、ga)b：cFigure2Loadingangles,（八）a=0o,(b)a=45o,(c)a=90o5.2TensiletestingmachineThetensiletestingmachineonwhichtopositionthecombinedloadfixtureshallbecapableofmaintainingacrossheaddisplacementspeedbetween0,125mm/minand10mmminlaccurateto20%.Itshallbeequippedwithajigtointroduceauniaxialloadtothefixturetoc
35、reatecombinedloadingtothespecimenfseeFigure1).ThetensiletestingmachineshallbeinaccordancewiththerequirementofISO7500-1,andtheforcemeasurementaccuracyshallbeequaltoorlessthan1%.Thetestmachineshallbeequippedwithmeansforrecordingthecompleteloadversusdisplacementcurvesduringthetest.6TestspecimenTheshape
36、andthedimensionsoftheadhesive-bondedmetal-CFRP-metalcombinedloadtestspecimenareshowninFigUre3.Thedogbone-shapedspecimenshallconsistofacentralCFRPpiecebondedtoametalpartateachsideoftheCFRP.Thisformsthemetal-CFRP-metalassemblyforthecombinedloadtest.ThebondingareabetweenCFRPandmetalis(100,5)mm(depth)x(
37、350,5)mm(width),whichisthesameasthespecimencross-sectionalareaofthereducedsection.ThethicknessoftheCFRPpieceis(50,5)mm(Figure3).Thetotalspecimenlengthis(1600,5)mm.Eachendcontainsthreeloadingholestoattachthespecimentothecombinedloadfixture(Figure1).NOTE1Otherdimensionsarepossibleuponagreementbetweent
38、hepartiesinvolved.NOTE2Thespecimenpreparationformakingmetal-CFRP-metalbondingcanbedifferentfordifferentpurposes,andthisisuptotheagreementbetweenthepartiesinvolved.Key1 metal2 CFRP3 specimendepthFigure3Shapeanddimensionsofadhesivebondedmetal-CFRP-metalassemblyspecimen7 ConditioningThetestspecimenshal
39、lbeconditionedattesttemperatureforatleast24hourspriortothecombinedloadtest.8 TestprocedureBeforethetest,thecross-sectionalareaofthebondedareashallbemeasuredtoanaccuracyofatleast0,01mmusingasuitablemeasurementapparatus.Aftermountingthemetal-CFRP-metalspecimeninthecombinedloadfixtureattheloadingangleo
40、finterest,theforceshallbeappliedinthedirectionoftheloadingaxis.Theload-machinedisplacementshallberecordedthroughoutthetestuntilthespecimenfailure.Atestspeedis(51)mmmin.Othertestspeedcanbeuseduponagreementbetweenthepartiesinvolved.ThetestshallbeperformedatoneofthetemperaturesspecifiedinISO291oratanot
41、hertemperatureagreeduponbetweenthepartiesinvolved.Aminimumoffivetestspecimensshallbetestedunderidenticalconditions.9 CalculationofloadsandstressesThenormalload(Ft)andshearloads(F)SShallbedeterminedusingtheappliedload(F)byForrnUlae11)and,respectively.Thenormalstress(t)andshearstress(s)areobtainedbydi
42、vidingtherespectiveloadvaluesbythecross-sectionalareaofthebondingarea,A,Formulae(3)andf41.Themaximumvalueofnormalstress(GtmaX)andshearstress(GS,max)aredeterminedusingFormUIae(5)and(61,respectively,bytakingthemaximumload(F=FmaX)observedfromtheload-displacementcurvesobtainedatanyspecificloadingangles(
43、Cx),asshowninFigUre4.Threesignificantfiguresshallbeusedforthenumericalresult.(3)KeyXdisplacement(mm)Yload(N)1 tensileloading(Ot=02 proportionaltensileshear(combined)loading(=45。)3 shearloading=90o)Figure4Load-displacementcurvesatdifferentloadinganglesFt=EcOSaFS=Rsinaand_t,max_GlaX一1,maxcosaAFs,max_F
44、maX；-s,maxsmaANOTEAnneXBgivesanexampleoftheload-displacementcurvesforcombinedstresstestingofCFRP-Aladhesivebondedspecimenandthecorrespondingcombinedstressplot.10TestreportThetestreportshallincludeatleastthefollowinginformation.a) areferencetothisdocument,i.e.ISO13094;b) typeofmaterialsusedtomakethes
45、pecimen;c) bondingprocessemployed;d) specimenandbondedareadimensions;e) conditioningandtestingconditions;f) testspeed;g) force-displacementcurves;h) individualvalues,meanvalue,andstandarddeviationoftheshearandtensilestrengthsinMPa;i) failuredescription(plugfailure,interfacialfailure,etc.,includingph
46、otos)inaccordancewithISO10365;j) anydeviationfromthedocument,ifnecessary;k) dateoftest.ISO2025-AllrightsreservedAnnexA(informative)ExampleoftestfixtureforcombinedstresstestTheshapeanddimensionsofthefixtureusedinthetestareshowninFigUreSA.l.215IIl6IIl,SJZLll-11T11piH!lIIIHLZ-T-Key1upperpart2lowerpartF
47、igureA.lShapeanddimensionsoftestfixtureAnnexB(informative)ExampleofcombinedstresstestonMetal/CFRPadhesivebondedassemblyB.lExperimentalload-displacementcurveTypicalexperimentalload-displacementcurvesatdifferentloadinganglesforadhesivebondedAl6061-0/90CFRP-Al6061specimensareshowninFigureB.l.Thetestswereperformedin23C150%RHandthetestspeedwas5mmmin.KeyXdisplacement(mm)Yappliedload(N)aTensileloading,bShearloading.FigureB.lLoad-displacementcurvesforallloadingpositionsB.2Combinedstressplot
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