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BESTMNINGAVSTTNINGHOSGUMMIDETERMINATIONOFCOMPRESSIONSETRUBBER橡胶压缩永久变形判定PROVNINGSMETODTESTINGMETHODALLMNTGENERALDENNASTANDARDVERENSSTMMERMEDSIS162204UTGVA2SOMISAKVERENSSTMMERMEDISO/R8151968,MEDUNDANTAGAVATTPROVNINGSTIDEN72HIRUMSTEMPERATURUTGTTOCHPROVNINGUNDER24HTILLAGTSSAMTATTPROVNINGSTEMPERATUREN125COCHOBLIGATORISKTSMRJNINGAVAPPARATENSPLATTORHARINFRTSTHISSTANDARDAGREESWITHSIS162204,ISSUE2,ANDINTECHNICALMATTERSWITHISO/R8151968,WITHTHEEXCEPTIONTHAT72HTESTINGTIMEATROOMTEMPERATUREHASBEENDELETEDATESTINGTIMEOF24HANDATESTINGTEMPERATUREOF125CANDACOMPULSORYLUBRICATIONOFTHEPLATESOFTHEAPPARATUSHAVEBEENADDEDSTANDARDENGLLERVULKATGUMMIMEDHRDHET3094IRHTHISSTANDARDAPPLIESFORVULCANISEDRUBBEROFAHARDNESSOF3094IRHSTTNINGRKVOTENMELLANKVARSTENDETJOCKLEKSMINSKNINGHOSOCHSMMANTRYCKNINGAVPROVKROPPBEHANDLADPSTTSOMNRMAREBESKRIVSIDENNASTANDARDSTTNINGENANGESICOMPRESSIONSETISTHEQUOTIENTBETWEENTHERESULTINGREDUCTIONOFTHICKNESSANDTHECOMPRESSIONOFATESTPEICETREATEDASDESCRIBEDINTHISSTANDARDCOMPRESSIONSETISSHOWNIN1PROVNINGSUTRUSTNING1TESTEQUIPMENT11MTDONFRBESTMNINGAVPROVKROPPARNASTJOCKLEKDETTASKALLHAENUNDRE,CIRKULROCHPLANPLATTAMEDDIAMETERN9,5MMOCHENVRE,SFRISKDELMEDDIAMETERN6,35MMSAMTHAENMTKRAFT0,850,03NOCHVARAGRADERATIHUNDRADELSMM11MEASURINGINSTRUMENTFORDETERMINATIONOFTHETHICKNESSOFTHETESTPIECESTHISSHALLHAVEALOWER,CIRCULARANDFLATBASEPLATEWITHADIAMETEROF95MMANDANUPPER,SPHERICALSECTIONWITHADIAMETEROF635MMITMUSTEXERTAMEASURINGPRESSUREOF085003NANDHAVEANINDICATINGACCURACYOF1/100MM12APPARATENLIGTFIGUR1FRSAMMANTRYCKNINGBESTENDEAVTVELLERFLERAPLATTORMEDMELLANLIGGNADEDISTANSSTYCKENOCHDONFRPLATTORNASSAMMANHLLNING12ANAPPARATUSFORCOMPRESSIONSEEFIG1COMPOSEDOFTWOORMOREPLATESWITHINTERMEDIARYSPACERSANDMEANSOFHOLDINGTHEPLATESTOGETHERPLATTORNASKALLVARAAVSTLOCHHAPLANAPARALLELLAVEROCHUNDERYTORDESKALLVARASTYVAOCHSSTORAATTPROVKROPPARNAVIDSAMMANTRYCKNINGICKETRNGERUTANFRKANTERNAYTORSOMKOMMERIKONTAKTMEDPROVKROPPARNASKALLVARAPOLERADEROSTFRITTSTLELLERFRKROMADEPLATTORNASKALLVARAVLRENGJORDAFREVARJEPROVNINGTHEPLATESSHALLBEMADEOFSTEELANDHAVEFLAT,PARALLELUPPERANDLOWERSURFACESTHEYMUSTBERIGIDANDLARGEENOUGHTOENSURETHATTHETESTPIECESARENOTPRESSEDOUTSIDETHEEDGESOFTHEPLATESDURINGCOMPRESSIONTHESURFACESWHICHCOMEINTOCONTACTWITHTHETESTPIECESMUSTBEPOLISHEDSTAINLESSSTEELORCHROMIUMPLATEDTHEPLATESMUSTBEWELLCLEANEDBEFOREEACHTESTFRATTHLLAPLATTORNASAMMANVIDPROVNINGENKANBULTAR,TVING,SJLVLSANDETNGEDANVNDASBOLTS,GCRAMPS,SELFLOCKINGTONGS,ETCMAYBEUSEDTOHOLDTHEPLATESTOGETHERDURINGTESTING13DISTANSSTYCKENALMPLIGENRINGARSKALLFRNORMALPROVKROPPHAENHJDAV9,380,01MMOCHFRLITENPROVKROPPENHJDAV4,720,01MM13THESPACERS,PREFERABLYRINGS,SHALLINTHECASEOFNORMALTESTPIECESHAVEAHEIGHTOF938001MMANDFORSMALLTESTPIECESASHEIGHTOF472001MM14VRMESKPMEDFLKTOCHAUTOMATISKTEMPERATURREGULATORSOMKANHLLATEMPERATURENKONSTANT14HEATINGCABINETWITHFANANDAUTOMATICTEMPERATUREREGULATORCAPABLEOFHOLDINGTEMPERATURECONSTANT2PROVKROPP2TESTPIECES21PROVKROPPARSKALLVARACYLINDRISKAOCHHAPLANA,JMNAOCHPARALLELLAVEROCHUNDERYTORPROVKROPPARKANPRESSVULKASELLERTASUTMEDSKRANDEVERKTYG21THETESTPEICESSHALLBECYLINDRICALANDHAVEFLAT,SMOOTHANDPARALLELUPPERANDLOWERSURFACESTHETESTPIECESCANEITHERBEPRESSUREVULCANISEDORCUTTOSHAPE22NORMALPROVKROPPSKALLHADIAMETERN290,5MMOCHTJOCKLEKEN12,50,5MM22ANORMALTESTPIECESSHALLHAVEADIAMETEROF2905MMANDATHICKNESSOF12505MMLITENPROVKROPPSKALLHADIAMETERN130,5MMOCHTJOCKLEKEN6,30,3MMASMALLTESTPIECESHALLHAVEADIAMETEROF1305MMANDATHICKNESSOF6303MMNORMALPROVKROPPBRANVNDASNRFRHLLANDENASMEDGERNORMALTESTPIECESSHALLBEUSEDWHENEVERPOSSIBLERESULTATFRNPROVKROPPARMEDOLIKADIMENSIONERFRICKEJMFRASRESULTSATTAINEDFROMTESTPIECESOFDIFFERENTSIZESMAYNOTBECOMPARED23PROVKROPPARBESTENDEAVFLERAGUMMIBITARDOCKHGSTSJUINORMALPROVKROPPOCHHGSTTREILITENPROVKROPPFRANVNDASSTTNINGENHOSSDANAPROVKROPPARBLIRIALLMNHETSTRRENHOSPROVKROPPARAVSAMMAMATERIALIETTENDASTYCKE23TESTPIECESCONSISTINGOFANUMBEROFLAYERSRUBBERNOTMORETHANSEVENINANORMALTESTPIECEANDNOTMORETHANTHREEINAMICROTESTPIECEMAYBEUSEDCOMPRESSIONSETOFSUCHTESTPIECESISGENERALLYLARGERTHANTHATOFTESTPIECESOFTHESAMEMATERIALWHICHCONSISTOFONLYONELAYER3PROVNING3TESTING31STTNINGSKALLBESTMMASGRNASAMTIDIGTPMINSTTREPROVKROPPARFRNSAMMAPROV31COMPRESSIONSETISDETERMINEDSIMULTANEOUSLYIFPOSSIBLEONATLEASTTHREETESTPIECESFROMTHESAMESPECIMEN32TIDENMELLANVULKNINGOCHPROVNINGSKALLVARAMINST16HFRNOGGRANNJMFRELSEAVRESULTATFRNPROVKROPPARAVOLIKAGUMMIMATERIALKANDETVARANDVNDIGTATTFASTSTLLAENBESTMDTIDMELLANVULKNINGOCHPROVNING32THETIMEBETWEENVULCANISATIONANDTESTINGSHALLBEATLEAST16HFORACCURATECOMPARISONOFRESULTSFROMTESTPIECESOFDIFFERENTRUBBERMATERIALS,ITMAYBENECESSARYTODETERMINEASPECIFICTIMEBETWEENVULCANISATIONANDTESTING33PROVKROPPARNASKALLUNDERMINST3HFREPROVNINGENFRVARASILUFTMEDENTEMPERATURAV232C33BEFOREBEINGSUBJECTEDTOTESTING,THETESTPIECESSHOULDBESTOREDFORAMINIMUMOF3HINAIRATATEMPERATUREOF232C34UNDERTIDENMELLANVULKNINGOCHPROVNINGSKALLPROVMATERIALETOCHPROVKROPPARNASKYDDASMOTLJUS34THESAMPLEMATERIALANDTESTPIECESMUSTBEPROTECTEDAGAINSTLIGHTBETWEENVULCANISINGANDTESTING35PROVKROPPARNASCENTRUMTJOCKLEKKONTROLLERAS35THECENTRETHICKNESSOFTHETESTPIECESISCHECKED36APPARATENSPLATTORSMRJSMEDETTTUNTSKIKTSILIKONOLJA,VISKOSITET200CST36THEPLATESOFTHEAPPARATUSARESMEAREDWITHATHINCOATINGOFSILICONOIL,VISCOSITY200CST37PROVKROPPARNAPALCERASMELLANPLATTORNATILLSAMMANSMEDDISTANSSTYCKENAIRUMSTEMPERATURPLATTORNATRYCKSIHOPSATTDEKOMMERIKONTAKTMEDDISTANSSTYCKENA,VILKETMOTSVARARENSAMMANTRYCKNINGHOSPROVKROPPARNAAVCA25DISTANSSTYCKENAFRICKEHINDRAPROVKROPPARNAATTEXPANDERA37THETESTPIECESAREPLACEDBETWEENTHEPLATESTOGETHERWITHTHESPACERPIECESATROOMTEMPERATURETHEPLATESAREPRESSEDTOGETHERSOTHATTHEYCOMEINTOCONTACTWITHTHESPACERS,WHICHISTHEEQUIVALENTOFACOMPRESSIONOFTHETESTPIECESBYAPPROX25THESPACERSMUSTNOTPREVENTTHETESTPIECESFROMEXPANDING38SAMMANTRYCKTAFRVARASNUPROVKROPPARNAUNDER38NOWCOMPRESSED,THETESTPIECESARESTOREDFOR2402HOMANNATEJANGESIMATERIALSPECIFIKATIONI2402HIFOTHERWISENOTSTATEDINMATERIALVRMESKPMEDNEDANANGIVENTEMPERATURSPECIFICATIONINAHEATINGCABINETATTHEFOLLOWINGTEMPERATURESPROVNINGSTEMPERATUR23270110011251ELLER1502CTESTTEMPERATURES232,701,1001,1251OR1502C39OMEDELBARTHREFTERAVLASTASPROVKROPPARNAOCHSTLLSATTSVALNAPETTUNDERLAGAVTRILUFTMEDENTEMPERATURAV232CUNDER303MINUTER,VARPPROVKROPPARNASCENTRUMTJOCKLEKBESTMS39IMMEDIATELYTHEREAFTER,THELOADISREMOVEDFROMTHETESTPIECESANDTHEYAREALLOWEDTOCOOLONAWOODSURFACEINAIRATATEMPERAUTREOF232CFOR303MINUTESAFTERWHICHTHEIRCENTRETHICKNESSISDETERMINED310EFTERPROVNINGENKLYVSPROVKROPPARNALNGSENDIAMETEROCHUNDERSKSMEDAVSEENDEPBLSOROCHANDRADISKONTINUITETER,SOMKANHAINVERKATPSTTNINGEN310AFTERTESTING,THETESTPIECESARESPLITDOWNTHECENTREANDINVESTIGATEDWITHREGARDTOBLISTERSANDOTHERDISCONTINUITIESWHICHMAYHAVEINFLUENCEDTHECOMPRESSIONSET4BERKNINGOCHANGIVANDEAVRESULTAT4CALCULATIONANDREPORTINGOFRESULTS41STTNINGEN,S,ANGESIOCHBERKNASENLIGTFORMELN41COMPRESSIONSET,S,ISGIVENINANDISCALCULATEDACCORDINGTOTHEFOLLOWINGFORMULASD0D1D0DSSD0D1D0DSD0PROVKROPPENSURSPRUNGLIGATJOCKLEKIMMD0TESTPIECEORIGINALTHICKNESSINMMD1PROVKROPPENSSLUTLIGATJOCKLEKIMMD1TESTPIECEFINALTH
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