BS EN 658-5-2002 Advanced technical ceramics - Mechanical properties of ceramic composites at room temperature - Determination of interlaminar shear strength by short span bend tes.pdf

1、Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN 658-5:2002 Advanced technical ceramics Mechanical properties of ceramic composites at room temperature Part 5: Determination of interlaminar shear strength by shor

2、t span bend test (three points) The European Standard EN 658-5:2002 has the status of a British Standard ICS 81.060.30 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIBS EN 658-5:2002 This British Standard was published under the auth

3、ority of the Standards Policy and Strategy Committee on 28 February 2003 BSI 28 February 2003 ISBN 0 580 41348 9 National foreword This British Standard is the official English language version of EN 658-5:2002. It supersedes DD ENV 658-5:1993 which is withdrawn. The UK participation in its preparat

4、ion was entrusted to Technical Committee RPI/13, Advanced technical ceramics, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publicati

5、ons referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessa

6、ry provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpr

7、etation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyri

8、ght date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM

9、 EN6585 December2002 ICS81.060.30 SupersedesENV6585:1993 Englishversion AdvancedtechnicalceramicsMechanicalpropertiesofceramic compositesatroomtemperaturePart5:Determinationof interlaminarshearstrengthbyshortspanbendtest(three points) CramiquestechniquesavancesPropritsmcaniques descramiquescomposite

10、stempratureambiante Partie5:Dterminationdelarsistanceaucisaillement interlaminaireparessaideflexionsurappuisrapprochs (troispoints) HochleistungskeramikMechanischeEigenschaftenvon keramischenVerbundwerkstoffenbeiRaumtemperatur Teil5:BestimmungderScherfestigkeitimDreiPunkt BiegeversuchmitkurzemAuflag

11、erabstand ThisEuropeanStandardwasapprovedbyCENon16October2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational st

12、andardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe offi

13、cial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EU

14、ROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN6585:2002E Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BS

15、IEN6585:2002(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Principle4 4 Terms,definitionsandsymbols .4 5 Apparatus .5 5.1 Testmachine 5 5.2 Testjig .5 5.3 Dimensionmeasuringdevices . 6 6 Testspecimens 6 7 Testspecimenpreparation . 6 7.1 Machining .6 7.2 Numberoftestspecimens 6 8 P

16、rocedure .6 8.1 Displacementrate . .6 8.2 Measurementoftestspecimens . .6 8.3 Testingtechnique . .7 8.3.1 Testspecimenmounting .7 8.3.2 Measurements7 8.4 Testvalidity . .7 9 Calculationofresults 7 10 Testreport 8 Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003,

17、 Uncontrolled Copy, (c) BSIEN6585:2002(E) 3 Foreword Thisdocument(EN6585:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC184,“Advancedtechnical ceramics“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,

18、atthelatestbyJune2003,andconflictingnationalstandardsshallbewithdrawnatthelatestby June2003. ThisdocumentsupersedesENV6585:1993. EN658 AdvancedtechnicalceramicsMechanicalpropertiesofceramiccompositesatroomtemperature hassix parts: Part 1 :Determinationoftensileproperties Part 2 :Determinationofcompr

19、essiveproperties Part 3 :Determinationofflexuralstrength Part 4 :Determinationofinterlaminarshearstrengthbycompressionloadingofnotchedtestspecimens Part 5 :Determinationofinterlaminarshearstrengthbyshortspanbendtest(threepoints) Part 6 :Determinationofinterlaminarshearstrengthbydoublepunchshearing A

20、ccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,Switzerla

21、ndandtheUnitedKingdom. Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIEN6585:2002(E) 4 1Scope ThispartofthisEuropeanStandardspecifiestheconditionsfordeterminationoftheinterlaminarshearstrengthof ceramicmatrixcompositematerialswithcon

22、tinuousfibrereinforcementatroomtemperature,bysubjectingatest specimentoashortspanbendtest(threepoints).Thismethodappliestoallceramicmatrixcompositeswitha continuousfibrereinforcementunidirectional(1D)andbidirectional(2D)andtridirectional(xD,with2 x 3)as definedinENV13233. Twoothermethodsforthedeterm

23、inationofshearstrengtharegiveninfurtherpartsofEN658. NOTE 1 Theinterlaminarshearcharacteristicscanvarysignificantlydependingontestspecimenpreparationand dimensions,rateofapplicationofthetestforce,surfacecondition,etc NOTE2 However, results obtained by this part of EN 658 cannot be compared with resu

24、lts obtained by the two other methods. NOTE3 Careshouldbeexercisedininterpretingtheresultsofthemethodtoobtainabsolutevaluesoftheinterlaminarshear strengthofceramicmatrixcompositesfordesignpurposes. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpub

25、lications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditiono

26、fthe publicationreferredtoapplies(includingamendments). ENV13233:1998, AdvancedtechnicalceramicsCeramiccompositesNotationsandsymbols. ENISO75001:1999, MetallicmaterialsVerificationofstaticuniaxialtestingmachinesPart1: Tension/compressiontestingmachines(ISO75001:1999) . ISO3611, Micrometercallipersfo

27、rexternalmeasurement. 3Principle Thetestconsistsofmeasuringtheforcerequiredtofractureatestspecimensubjectedtoashortspan,threepoint bendtest.Thegeometryofloadinginthedirectionnormaltotheplies(direction3)andthetestspecimen dimensionsshallbesuchthatfailureoccursintheformofinterlaminarshearinplane(1,2).

28、Thetestisperformedat constantcrossheaddisplacementrate. 4 Terms,definitionsandsymbols ForthepurposesofthisEuropeanStandard,thefollowingterms,definitionsandsymbolsandthosegivenin ENV13233:1998apply. 4.1 shearfailureforce, F themaximumforcerequiredtoproduceinterlaminarshearfailurewhentestspecimenissub

29、jectedtothreepoints shortspanbendtest Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIEN6585:2002(E) 5 4.2 interlaminarshearstrength, ILSS b ratiocalculatedonthebasisoftheshearfailureforceandtheshearloadedarea NOTE Thenotation ILSSiss

30、upplementedbyasmallletterreferringtothetestmethoddescribed;inthiscase ILSS b forthe interlaminarshearstrengthobtainedfromashortspanbendtest. 5Apparatus 5.1Testmachine Thetestmachineshallbeequippedwithasystemforrecordingtheforceappliedtothetestspecimen.The machineshallconformtograde1inENISO75001:1999

31、. 5.2Testjig Thetestjigiscomposedoftwoparts,linkedtothefixedandmobilepartsofthemachine.Ithastwooutersupport rollersandoneinnersupportroller. Thecylindricalrollersshallhaveadiameterof4mmto10mm.Theirlengthshallbeatleastequaltothewidthof thetestspecimen.Theyshallbemadeofamaterialwithahardnessatleastequ

32、altothatofthetestspecimen.The axesoftherollersshallbeparalleltowithin0,01mm/mm. Theouterrollersshallbefreetorotate(seeFigure1). Tworollersshallbefreetopivotaroundanaxisparalleltothelongitudinaldirectionofthetestspecimen,inorderto adapttothenonparallelismoftheupperandlowerfacesofunmachinedtestspecime

33、ns(seeFigure1). Thedistancebetweenrollersshallbeinaccordancewithclause6. Theinnerrollershallbecentredwithrespecttotheouterrollerstowithin0,2mm. Key 1Pivotingloadingroller 2Rollingandpivotingsupportroller 3Rollingbutnonpivotingsupportroller Figure1Testjig Licensed Copy: Wang Bin, ISO/Exchange China S

34、tandards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIEN6585:2002(E) 6 5.3Dimensionmeasuringdevices Devicesusedformeasuringlineardimensionsofthetestspecimenshallbeaccurateto 0,1mm.Micrometres shallbeinaccordancewithISO3611. 6 Testspecimens RecommendedtestspecimendimensionsaregiveninTa

35、ble1. Table1Recommendedtestspecimendimensions Dimensionsinmillimetres 1D,2D,xD Tolerance l t ,totallength 20to25 1 h,thickness 3 1 b,width 10 0,1 S,supportspan 15 0,1 Planeparallelismofmachinedparts 0,05 NOTE Thesupportspanof15mmisderivedfromthetestspecimenthicknessof3mmgiveninTable1.Ifadifferent th

36、icknessisusedthespanshouldbechangedaccordingto: S=5h 1 7 Testspecimenpreparation 7.1Machining Duringcuttingout,careshallbetakentoensurethatthetestspecimenaxescoincidewiththefibredirections. Machiningparameterswhichavoiddamagetothematerialshallbeestablishedanddocumented.These parametersshallbeadhered

37、toduringtestspecimenpreparation. 7.2Numberoftestspecimens Atleastfivevalidtestresults(see8.4)arerequired. NOTE Ifstatisticalevaluationisrequired,thenumberoftestspecimensshouldbeinaccordancewithENV8435. 8Procedure 8.1Displacementrate Useaconstantcrossheaddisplacementratewhichallowstestspecimenfailure

38、within1min.Thedisplacement rateshallbereported. NOTE Generally,adisplacementratebetween0,5mm/minand1mm/minisused. 8.2Measurementoftestspecimens Measurethewidthandthicknesstothenearest0,1mminthecentreandateachendofthetestspecimenand reportthearithmeticmeansofthemeasurements. Licensed Copy: Wang Bin,

39、ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIEN6585:2002(E) 7 8.3Testingtechnique 8.3.1 Testspecimenmounting Thetestspecimenshallbeinstalledinthetestjigcentredwithrespecttotherollersandwithitslongitudinalaxis perpendiculartotheaxesoftherollers. NOTE Itisre

40、commendedtouseatoolforthispurpose. Zerotheloadcelloutput.Whenrequired,asmallpreloadcanbeappliedinordertomaintaincorrectpositioningof thetestspecimen.Thispreloadshallnotincreasebeyond5%oftheexpectedfailureforceatanytime. 8.3.2Measurements Setthedisplacementrateonthetestmachine; zerotheloadcell; recor

41、dtheforceversustime; loadthetestspecimenuptofailure; readtheloadsignalaftertestspecimenfailure; notethepositionoffracturelocationandidentifythefailuremode(see8.4). 8.4Testvalidity Thefollowingcircumstanceswillinvalidateatest: a) failuretospecifyandrecordtestconditions; b) failuretonotethemodeandloca

42、tionoffracture; c) testspecimenfailurenotoccurringinashearplanewithin 4 h fromthemidplane. 9 Calculationofresults Thefollowingexpressionshallbeusedtocalculatetheinterlaminarshearstrength: bh F ILSS b 4 3 = where ILSS b istheinterlaminarshearstrength,inplane(1,2),inmegapascal(MPa); F istheshearfailur

43、eforce,innewton(N); b isthemeantestspecimenwidth,inmillimetre(mm); h isthemeantestspecimenthickness,inmillimetre(mm). Licensed Copy: Wang Bin, ISO/Exchange China Standards Information Centre, 25 June 2003, Uncontrolled Copy, (c) BSIEN6585:2002(E) 8 10 Testreport Thetestreportshallcontainatleastthefo

44、llowinginformation: a) nameandaddressofthetestingestablishment; b) dateofthetest,uniqueidentificationofreportandofeachpage,customernameandaddressandsignatory; c) areferencetothisEuropeanstandard,i.e.“determinedinaccordancewithEN6585“; d) testspecimendrawingorreference; e) descriptionofthetestmaterial(materialtype,manufacturingco