1、BRITISH STANDARD BS EN 13895:2003 Textiles Monofilaments Determination of tensile properties The European Standard EN 13895:2003 has the status of a British Standard ICS 59.080.20 BS EN 13895:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee
2、on 20 March 2003 BSI 20 March 2003 ISBN 0 580 41464 7 National foreword This British Standard is the official English language version of EN 13895:2003. The UK participation in its preparation was entrusted to Technical Committee TCI/24, Physical testing of textiles, which has the responsibility to:
3、 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 publications referred to in this document may be found in the BSI Catalogue under the section entitled “International S
4、tandards 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 necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Stan
5、dard 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 interpretation, or proposals for change, and keep the UK interests informed; monitor related international and Europe
6、an 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 13 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publ
7、ication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13895 March2003 ICS59.080.20 Englishversion TextilesMonofilamentsDeterminationoftensileproperties TextilesMonofilamentsDterminationdespropritsen traction TextilienMonofilamenteBestimmungder Zugdehnungseigenschaften ThisEu
8、ropeanStandardwasapprovedbyCENon21November2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobt
9、ainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions.
10、CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATIO
11、N EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13895:2003EEN13895:2003(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Princ
12、iple5 5 Apparatus .5 6 Samplingandconditioning. 6 7 Testprocedure .6 8 Calculationofresults 7 9 Testreport . .8 AnnexA (informative) ForceElongationcurve10 AnnexB (informative) Principleofthebollardtypeclamp .11 AnnexC (informative) Recommendedconditioningtimeversusdiameterformoisturesensitive polym
13、erictypes 12 AnnexD (Informative)13EN13895:2003(E) 3 Foreword Thisdocument(EN13895:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC248“Textilesandtextile products“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandard shallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor bye
14、ndorsement,atthelatestbySeptember2003,andconflictingnationalstandardsshallbewithdrawnatthe latestbySeptember2003. AnnexesA,B,CandDareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belg
15、ium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN13895:2003(E) 4 1Scope ThisdraftEuropeanStandardspecifiesamethodforthedeterminationoftensilepropertiesofmonofila
16、ments. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsap
17、plytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN13392, Textiles MonofilamentsDeterminationoflineardensity EN20139, Textiles Standardatmospheresforconditioningandtesting(ISO139:1973)
18、 ENISO75001: MetallicmaterialsVerificationofstaticuniaxialtestingmachinesPart1:Tension/compression testingmachines(ISO75001:1999) 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermsanddefinitionsapply: 3.1 monofilament yarnmadewithonlyonefilament 3.2 pretension tensionapplie
19、dtoaspecimenatthebeginningofthetesttoestablishthegaugelength 3.3 gaugelength lengthofthespecimenmeasuredbetweentheclampingpointsunderpretension.Inbollardorcapstanclamps,itis thedistancebetweentheirgrippingpoints,measuredalongthepathofthemonofilament 3.4 constantrateofextension(CRE)dynamometer tensil
20、etestingmachinewhereoneclampisstationaryandtheotherismovingwithaconstantspeedthroughoutthe test,andwheretheentiretestingsystemisvirtuallyfreefromdeflection 3.5 clamps partsofthetestingdevicewhichareusedtogripthespecimenbymeansofsuitablejaws 3.6 jaws elementsofaclampwhichgripthespecimenwithoutdamagin
21、gitandwhichpreventslippageduringthetest 3.7 package methodofpresentationofthemonofilament,e.g.spool,tube,coneEN13895:2003(E) 5 3.8Tensileproperties 3.8.1 maximumforce maximumvalueofforceappliedtoatestspecimencarriedtobreakduringatest(seeannexA) 3.8.2 elongationatmaximumforce increaseinlengthofaspeci
22、menproducedbythemaximumforce(seeannexA),expressedasapercentageof thegaugelength 3.8.3 forceatbreak finalforceatthemomentthatthespecimenbreaksintotwopartsafterattainmentofthemaximumforce NOTE Theforceatbreakisusually,butnotalways,identicalwith themaximumforce . 3.8.4 elongationatbreak increaseinlengt
23、hofaspecimenatbreakexpressedasapercentageoftheinitiallength 3.8.5 forceatspecifiedelongation(FASE) forceassociatedwithaspecifiedelongationontheforceelongationcurve 3.8.6 elongationatspecifiedforce(EASF) increaseinlengthofatestspecimenproducedbyaspecifiedforce 3.8.7 tenacity maximumforcedividedbythea
24、ctuallineardensitymeasured(accordingtoEN13392)beforethetest 3.8.8 tenacityatspecifiedelongation(TASE) forceatspecifiedelongationdividedbytheactuallineardensitymeasuredbeforethetest 3.8.9 breakingenergy energyrequiredtobreakaspecimen 3.8.10 specificbreakingenergy energyrequiredperunitmasstobreakaspec
25、imen 4Principle Aspecimenofmonofilamentisautomaticallyormanually mountedintheclampsofatensiletestingmachineand stretchedataconstantrateofextensionuntilbreak . 5Apparatus 5.1 Testinginstrument TheinstrumentusedshallbecalibratedaccordingtoENISO75001EN13895:2003(E) 6 NOTE Thespecimenloadingprocedurecan
26、bemanualorautomatic. Theinstrumentshallbeequippedwith: a) Anelectronicforcemeasuringdevice. b) Anautographicrecordergivingtheforceelongationcurve,oradatacollectingsystem. c) Thecapabilityofbeingsettoagaugelengthof500mm. d) Thecapabilityofhavingapretensionseteitherbymeansofpretensionweightsorbyuseoft
27、heforce measuringdevice. 5.2Clamps Theinstrumentshallbeequippedwithclampsforgrippingthespecimenatthespecifiedgaugelength.Theclamps shallgripthespecimenwithoutslippageordamagetothespecimenwhichcanresultinjawbreaks. a) Clampswithplanefaced,uncoatedjawscanbeused,butifthesecannotpreventslippage,thenothe
28、r typesofclampsmaybeusedbyagreementbetweentheparties. b) Clampswithcoatedjaws,orbollardtypeclampsinwhichthespecimenmakesapartialturnarounda curvedextensionorotherkindofsnubnoseddevice. NOTE Thetypeofclampcaninfluencetheaccuracyoftheactualelongation.Forimprovedaccuracy,anextensometer shouldbeused.Int
29、hiscasetheinitiallengthreferstonewinitiallength. TheprincipleofabollardtypeclampisshowninannexB. 6Sampling and conditioning Atleastthefirstlayerofproductonthepackageisrejected.Aminimumoffivespecimensofatleast1mlengthis takenfromthepackage.Beforetesting,thespecimensshallbeconditionedinthestandardatmo
30、sphere,as describedinEN20139(seeannexC). NOTE Fortheautomatictesttheconditioningiscarriedoutwhilstthemonofilamentisstillonthepackage. 7 Testprocedure 7.1Operating conditions 7.1.1Pretension Useapretensionof(0,050,005)cN/dtex.Inallcasescalculatethepretensionusingthelineardensity. 7.1.2 Gaugelength Us
31、eagaugelengthof500mm1,0mm. NOTE Whenlargebollardclampsareuseditmaybenecessarytoincreasethegaugelengthtoensureanadequatefree lengthbetweentheclamps.Whentestingamonofilamentwithahighelongationitmaybenecessarytoshortenthegauge length. 7.1.3 Jawalignment Beforeclampingthetestspecimen,checkthatthejawsare
32、correctlyalignedandparallel,sothattheforceapplied causesnoangulardeviation.EN13895:2003(E) 7 7.1.4 Testingspeed Thetestingspeedshallbe100%ofthegaugelengthperminute.Otherspeedsmaybeagreeduponbetweenthe parties. 7.2 Preparationofspecimenandmountingprocedure 7.2.1 Manualtest Threadoneendofthetestspecim
33、enbetweenthejawsofoneclampandcloseit,takingcaretopreventany stretchingofyarn.Placetheotherendofthespecimenthroughthejawsoftheotherclampandapplythe pretensionbeforeclosingtheclamp. NOTE Somedynamometersprovidealternativeautomaticsystemsforapplyingpretension. 7.2.2Automatic test Fortheautomatictestthe
34、specimensaremountedautomaticallybyafeedingmechanismwhichthreadsthe specimenthroughthejaws.Thepretensionprocedureiscarriedoutautomaticallybythemachine. 7.3Testing Aftertheyarnhasbeenclamped,setthetraversingjawinmotionatthespecifiedtestingspeedandextendthe specimentobreak,recordingtheelongationandthef
35、orce(s)required. NOTE Fortheautomatictestthiswillnormallyhappenautomaticallyafterthemountingandpretensionprocedure 7.4 Yarnslippagethroughtheclampsandjawbreaks Ensurethatduringthetesttheclampedyarnlengthisnotincreasedbyslippageoftheyarnintheclamps. Whenatestspecimenbreaksinsidetheclamp,orwithin10mmo
36、ftheclampingpoint(seeannexB),thisis classifiedasajawbreak.Inthecaseofbollardclamps,anybreakthatoccursonthecurvedsurfaceoftheclamp isalsoclassifiedasajawbreak.Theresultsofsuchjawbreaksareignoredandadditionalspecimensshallbe tested.Ifthenumberofjawbreaksexceeds20%ofthenumberofspecimenstested,thejawsar
37、enotsatisfactory andcorrectiveactionshallbetaken. 7.5 Datatobecollected Dependingupontherequirements,collectthefollowingdata: Maximumforce Elongationatmaximumforce Otherparameterssuchasforceatbreak,elongationatbreak,FASE,EASF,tenacity, TASE,etc.canalsobe collected. 8 Calculationofresults 8.1 Measure
38、dvalues Foreachsampleunitcalculate,forallmeasuredparameters,themeanvalue.Ifrequired,calculatethestandard deviationand95%confidenceinterval.EN13895:2003(E) 8 8.2 Examples 8.2.1 Elongation Theelongationiscalculatedasfollows: Elongation(%)=(Ex100)/ L o where: L o isinitiallengthorextensometerinitiallen
39、gth(mm) Eisincreaseinlengthofthespecimen(mm) 8.2.2 TenacityandTASE InordertocalculatethederivedvariablestenacityandTASE,dividetheappropriateforcebythelineardensity measuredonthesamepackage. Tenacity(cN/dtex)= F max / T where: F max ismaximumforceofthetestspecimenincN Tislineardensityindtex,measuredo
40、nthesamepackage 8.2.3 Specificbreakingenergy Calculatethespecificbreakingenergyofeachtestspecimenasfollows: Specificbreakingenergy(J/g) 7 10 = T L W 0 where: WisthebreakingenergyinJ(seeannexA) L O isinitiallengthoftestspecimeninmmunderspecifiedpretension Tislineardensityofspecimenindtex 9 Testreport
41、 9.1 Generalinformation. a) Referencetothisstandardandmethod. b) Referencetotestequipment. c) Identificationoftestsample(polymericmaterial,numberofspecimens,samplingprocedure,etc.). d) Lineardensity. e) Anydeviationfromtheprocedure.EN13895:2003(E) 9 9.2 Requiredresults. a) Thetensileproperties(seean
42、nexD)ofeachtestspecimenexpressedinappropriateunits. b) Thearithmeticmeanvalueofeachtensileproperty,expressedinappropriateunits. c) Ifrequired,thestandarddeviationand95%confidenceintervalofeach property.EN13895:2003(E) 10 AnnexA (informative) ForceElongationcurve FigureA.1ForceElongationcurve Key AMa
43、ximumforce 1Elongationatmaximumforce BForceatbreak 2Elongationatbreak XForce YElongation SurfaceCunderthecurve =BreakingenergyEN13895:2003(E) 11 AnnexB (informative) Principleofthebollardtypeclamp A B C C Key Aclampingpoint Byarnguidinggroove Cjaws FigureB.1PrincipleofthebollardtypeclampEN13895:2003(E) 12 AnnexC (informative) Recommendedconditioningtimeversusdiameterformoisturesensitive polymerictypes Diameter(mm) Time(days) 0,250 1 0,250 0,0500 2 0,500
