BS EN 12503-5-2001 Sports mats - Determination of the base friction《运动垫 基本摩擦的测定》.pdf

1、BRITISH STANDARD BS EN 12503-5:2001 Sports mats Part 5: Determination of the base friction The European Standard EN 12503-5:2001 has the status of a British Standard ICS 97.220.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 12503-5:2001 This British Standard, having b

2、een prepared under the direction of the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 June 2001 BSI 06-2001 ISBN 0 580 37271 5 National foreword This British Standard is the official English language version

3、of EN 12503-5:2001. Together with BS EN 12503-1:2001, BS EN 12503-2:2001, BS EN 12503-3:2001, BS EN 12503-4:2001, BS EN 12503-6:2001 and BS EN 12503-7:2001, it supersedes BS 1892-2.10:1990 which will be withdrawn on 15 August 2001. The UK participation in its preparation was entrusted to Technical C

4、ommittee SW/14, Gymnasium and sports equipment, 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 publications referred to in this docume

5、nt may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of Bri

6、tish Standards are responsible for their 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 European committee any enquiries on the interpretation, or proposals for change

7、, 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 6, an inside back cover and a back cover. The BSI copyright date d

8、isplayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN125035 April2001 ICS97.220.30 Englishversion SportsmatsPart5:Determinationofthebasefriction TapisdesportPartie5:Dterminati

9、ondes caractristiquesantidrapantesdelabase SportmattenTeil5:Bestimmungder ReibungseigenschaftenderUnterseite ThisEuropeanStandardwasapprovedbyCENon21January2001. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanatio

10、nalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheres

11、ponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,Sw

12、itzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN125035:2001EPage2 EN125035:2001

13、 Contents Page F o r e w o r d 2 1Scope 3 2 N o r m a t i v e r e f e r e n c e s . 3 3Principle. 3 4 Apparatus 3 5 T e s t p i e c e . 5 6 Conditioningandtesttemperature. 5 7 Procedure . 5 8 E x p r e s s i o n o f r e s u l t s 6 9 Testreport. 6 Foreword ThisEuropeanStandardhasbeenpreparedbyTechni

14、calCommitteeCEN/TC136“Sports,playgroundandother recreationalequipment“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyOctober2001,andconflictingnationalstandardsshallbewithdrawnatthelate

15、st byOctober2001. ThisstandardEN12503“Sportsmats“consistsof: Part1: Gymnasticmats,safetyrequirements Part2: Polevaultandhighjumpmats,safetyrequirement Part3: Judomats,safetyrequirements Part4: Determinationofshockabsorption Part5: Determinationofthebasefriction Part6: Determinationofthetopfriction P

16、art7: Determinationofstaticstiffness AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway

17、,Portugal,Spain,Sweden, SwitzerlandandtheUnitedKingdom.Page3 EN125035:2001 1Scope ThisEuropeanStandardspecifiesamethodfordeterminingtheantislipcharacteristicsofthebaseofsportsmats types1to8ofEN125031:2001ortype12ofEN125033:2001. 2Normativereferences ThisEuropenStandardincorporates,bydatedorundatedre

18、ference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundat

19、edreferences,thelatesteditionofthe publicationreferredtoapplies(includingamendments). EN125031:2001 SportsmatsPart1:Gymnasticmats,safetyrequirements EN125033:2001 SportsmatsPart3:Judomats,safetyrequirements 3Principle Themassofthematisdeterminedtogetherwiththeslipresistancecharacteristicsofthebaseof

20、themat.Thisis measuredbyanaluminiumfoot(slider)attachedtothearmofapendulum,whichisallowedtoslideoverthebase forasetdistanceandtheenergyabsorbedbyfrictionmeasured. 4Apparatus 4.1Frictiontester 4.1.1The frictiontestershallbeinaccordancewithfigure1andcompriseofthefollowing: a)aspringloadedsliderofthema

21、ss,sizeandshapespecifiedin4.1.3mountedontheendofapendulum(see 4.1.2)sothattheslidingedgeisapproximately510mmfromtheaxisofsuspension; b)meansforsettingthecolumnoftheinstrumentvertical; c)meansforraisingandloweringtheaxisofsuspensionofthependulumsothattheslidercan 1)swingclearofthesurfaceofthetestpiec

22、e,and 2)besettoslideoverafixedlengthofsurfaceof126,0mm. Thislengthshouldbeasnearasisvisually possiblebutinanycasewithin1mm; d)meansforholdingandreleasingthependulum; e)apointerbalancedabouttheaxisofsuspension,indicatingthepositionofthependulumthroughoutitsforward swingandmovingoverthecircularscaledr

23、awnasspecifiedin4.2.Themassofthepointershallbenotmore than85gandthefrictioninthepointermechanismshallbeadjustablesothat,withthependulumswingingfreely fromahorizontalposition,theoutwardtipofa300mmlongpointermaybebroughttorestontheforwardswing ofthependulumatapoint10mmbelowthehorizontal.Page4 EN125035

24、:2001 Key 1Clutch 2 Adjustmentscrew 3Pointer 4Scale 6Raise/lowermechanism 7Slider 8Adjustablefeet 9 Woodenplate(approximately10mmthick) 5Pendulum Figure1Apparatusfordeterminationofslipresistance 4.1.2 Themassofthependulumincludingtheslidershallbe(1,500,03)kg,thecentreofgravitylyingontheaxis ofthearm

25、atadistanceof(4105)mmfromthecentreofsuspension. 4.1.3Theslidershallconsistofanaluminiumblock76mmwide,24mmdeepand6mmthickheldonarigidbase withatotalmass(aluminiumplusmountingplate)of(505)gwhichismountedonanaxissetatanangleof approximately26withthehorizontalwhenthependulumisatthelowestpointofitsswing,

26、sothatonlytherear edgeoftheslidercontactsthetestsurface,andtheslidercanturnaboutitsaxiswithoutobstructiontofollow unevennessofthesurfaceperpendiculartotheplaneofthependulumswing. Theworkingedgesoftheunconditionedslidershallbesquareandcleancut,andfreefromcontamination(abrasive oroiletc.). Theslidersh

27、allbeconditionedbymountingitontothependulumandcarryingout10swingsonto400gradewet anddrypaper. Theslidershallbespringloadedagainstthetestsurfaceandthenominalstaticforce F s ontheslidershallbe (22,20,5)Ninitsmedianposition;thechangeinthestaticforceontheslidershallbenotgreaterthan0,2Nper millimetredefl

28、ectionoftheslider. 4.2Calibrationofthefrictiontester Thescaleoftheinstrumentwhenusedforthistestshallbetheunit a drawnupbymeansofthefollowingequation: a F p a 1 a 2 F s a 3 l 100 where: a isameasureofthecoefficientoffriction(times100),expressedbyavaluewithoutdimension; F p istheforceexertedbythependu

29、lum,inN; a 1 isthedistanceoftheeffectivecentreofgravityofthependulumfromthecentreofoscillation,inmm;Page5 EN125035:2001 a 2 istheverticaldistanceoftheedgeofthescalebelowthezeroofthescale,whichshallbe10mmbelowthe horizontalwhenthearmisreleasedtoswingfreelyfromthehorizontal,inmm; F s isthenominalstati

30、cforceontheslider,inN,asdefinedin4.1.3; a 3 istheslidingdistance,inmm; l isthelengthofthepointer,inmm. 4.3Scalesforweighingthetestpieces,measuringtoanaccuracyof10g. 5Testpiece Thetestpieceshallcompriseofthewholemat. 6Conditioningandtesttemperature Conditionthetestpieceforaminimumof24hat(213)Cimmedia

31、telybeforethetestandcarryoutthetestat thesametemperature. 7Procedure 7.1Securethetestpiecewithitsbasesurfaceuppermost.Arrangethetesterinpositionoverthetestpieceand leveltheapparatuspreciselybymeansoftheadjustablefeet.Locatethefrictiontesterinsuchapositionthatthe slidercantraversethesurfaceatapproxim

32、atelythemiddleofthemat. 7.2Raisethependulummechanismuntilitcanswingfreelyabovethesurfaceofthetestpiece.Lockthependulum intothehorizontalpositionandrotatethependulum.Ifthepointerisnothorizontal,turntheadjustmentscrewuntil itis.Releasethependulumandnotethepositiononthescaleatwhichthepointercomestorest

33、. Repeatthisatleastthreetimes.Ifthisreadingisnotzero,adjusttheclutchatthepicotpoint,untilwhenoperated areadingofzeroisconsistentlyobtained. 7.3Withthependulumhangingfreely,lowerthependulumuntilittouchesthesurfaceofthetestpiece.Lockthe mechanism.Raisetheslidebyliftingthehandle,movethependulumtotherig

34、ht,lowertheslideruntilittouchesthe surfaceofthespecimenandnotethepointofcontact.Raisetheslideagain,movethependulumtotheleftandnote thepointatwhichthesliderjustleavesthesurface.Withtheaidofarulerlaidonthesurfaceofthetestpiece, alongsidetheprojectedpathoftheslider,adjusttheheightofthependulummechanism

35、untilthelengthofthe contactpathoftheslideris(1261)mm.Aftersettingthisdistancelockthependulummechanismsecurelyatthis heightandrecheckthesliderspathlengthcarefully,beforemakingatest. 7.4Lockthependulumintothehorizontalpositionandrotatethepointertoitsrestpositionagainsttheadjustment screwonthependuluma

36、rm.Releasethependulumandallowtheslidertoexecuteasingletraverseofthetest piece.Withoutdelay,makesevenfurtherswingsofthependulum,resettingthependulumandpointeraftereach swing.Notethereadingsindicatedbythepointerforthelastfiveswings. Alwayscatchthependulumasitbeginsitsreturnswing.Whenreturningthependul

37、umtoitshorizontalposition, alwaysraisethesliderwiththehandletopreventcontactbetweenthesliderandthetestpiece. 7.5Repeattheproceduregivenin7.1to7.4toobtainreadingsinfourdirectionsbyrotatingtheapparatusthrough 90betweeneachsetofreadings. 7.6Determinetheweightofthetestpiece.Page6 EN125035:2001 8Expressi

38、onofresults Calculatethemeanvaluesforthefiveswingsineachorientation. Determinethelowestmeanvalueofthefourorientations. Calculatethefrictionalvalueusingthefollowingformula: b a L m 100 where: b isthefrictionalvalue a Listhelowestmeanslipresistancevalue m isthemassof1m 2 matinkg Determinethelowestfric

39、tionalvaluefromthethreetestspecimens. 9Testreport Thetestreportshallcontainthefollowinginformation: a)areferencetothisEuropeanStandard,EN125035; b)acompleteidentificationoftheproducttested,includingtype,sourceandmanufacturersreferencenumbers; c)thefrictionalvalue; d)anydeviationsfromthestandardwhich

40、mayhaveaffectedtheresults.blankBS EN 12503-5:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorpor

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