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1、Licensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSIBRITISH STANDARD BS EN13893:2002CONFIRMED DECEMBER 2007Resilient, laminate and textile floorcoverings Measurement of dynamic coefficient of friction on dry floor surfacesThe European Standard EN 1389
2、3:2002 has the status of aBritish StandardICS 59.080.60; 97.150 BS EN 13893:2002National forewordThis British Standard is the official English language version ofEN 13893:2002.The UK participation in its preparation was entrusted to Technical CommitteePRI/60, Resilient floor coverings, which has the
3、 responsibility to: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 European developments and promulgate them in the UK.A
4、 list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe 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 Stand
5、ards 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 Standard d
6、oes not of itself confer immunity from legal obligations.Licensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSIThis British Standard, having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was publi
7、shed under the authority of the Standards Policy and Strategy Committee on28 November 2002 BSI 28 November 2002ISBN 0 580 40862 0Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page,pages 2 to 10, an inside back cover and a back cover.The BSI copyright date
8、 displayed in this document indicates when the document was last issued.Amd. No.DateCommentsAmendments issued since publicationEUROPEAN STANDARD NORME EUROPENNEEUROPISCHE NORMEN 13893November 2002ICS 59.080.60; 97.150English versionResilient, laminate and textile floor coverings - Measurement of dyn
9、amic coefficient of friction on dry floor surfacesRevtements de sol rsilients, stratifis et textiles - Dtermination du coefficient de frottement dynamique sur la surface des sols secsElastische, laminierte und textile Bodenbelge - Messung des Gleitreibungskoeffizienten von trockenen Bodenbelagsoberf
10、lchenThis European Standard was approved by CEN on 26 August 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical
11、references concerning such national standards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member
12、into its own language and notified to the Management Centre has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Port
13、ugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATION C O M I T EUR O P EN DE NOR M A L I S A TI ON EUR OP I S C HES KOM I TEE F R NOR M UNG Management Centre: rue de Stassart, 36 B-1050 BrusselsLicensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008
14、05:46, Uncontrolled Copy, (c) BSI 2002 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members.Ref. No. EN 13893:2002 EEN 13893:2002 (E)Licensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSIForewordThis doc
15、ument (EN 13893:2002) has been prepared by Technical Committee CEN/TC 134 Resilient, textile and laminate floor coverings, the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at
16、 the latest by May 2003, and conflicting national standards shall be withdrawn at the latest by May 2003.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association.In this European Standard the annex A is normative.According to the
17、CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spa
18、in, Sweden, Switzerland and the United Kingdom.9Licensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSIIntroductionDynamic friction testing is a means of assessing the slipperiness of floors. Many test devices have been constructed but these give differe
19、nt results since the design and construction methods differ and because different test parameters are chosen.CEN/TC 134 therefore decided not to standardize a particular device for testing slipperiness properties of floor coverings. The aim is to fix and standardize the principle of testing and spec
20、ify the parameters to be followed when designing a test device and when testing with it.Licensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSI1ScopeThis European Standard specifies the method for the measurement of dynamic coefficient of friction () on
21、surfaces of resilient, laminate and textile floor coverings, usually walked on with shoes.Relief floor coverings with a displacement volume 4 cm/dm are covered by this standard.The measurements are made in a laboratory on ex-factory dry floor covering surfaces only. The method described is not suita
22、ble for testing on wet or contaminated surfaces.2Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated
23、 references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments).EN 522:1998, Adhesives for le
24、ather and footwear materials Bond strength Minimum requirements and adhesive classification.EN 12466:1998, Resilient floor coverings Vocabulary.EN ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness) (ISO 868:1985).3Terms and definitionsFor the
25、 purposes of this European Standard, the terms and definitions of EN 12466:1998 together with the following apply.3.1dynamic coefficient of friction, quotient of the horizontal frictional force and the vertical load during motion at a constant speed between the slider and the horizontal floor coveri
26、ng3.2displacement volumeopen volume of a relief floor covering beneath the wear surfaceNOTEThe method for determination of this property is given in annex A.4PrincipleSliders made from the defined material and having a definite shape are loaded to impose a specified force on the floor covering. The
27、loaded sliders are pulled parallel to the surface of the floor covering at a constant speed. The horizontal force applied to pull the sliders is recorded over the length of a trace. The horizontal force is divided by the vertical force to obtain the dynamic coefficient of friction.Licensed Copy: Gil
28、bert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSI5Apparatus and materials5.1Apparatus5.1.1A pulling device, able to pull a loaded slider assembly at a constant speed, to a tolerance of 0,01 m/s, within the range of 0,20 m/s to 0,30 m/s along a length which allows a
29、stable measurement reading for at least0,30 m.5.1.2A measuring device, capable of measuring the horizontal force with an error limit of 1 %.5.1.3A slider assembly, with two leather sliders and one shoe rubber slider of shape and dimensions specified in Figure 1, arranged on the assembly as shown in
30、Figure 2. The three sliders shall be of similar thickness within the range 2 mm to 6 mm, to ensure that they are all capable of being in contact with a flat surface, and shall be firmly fixed to the assembly by means of a contact adhesive. The slider assembly shall be loaded with a mass such that th
31、e total mass of the loaded slider assembly is (10,0 0,1) kg.Dimensions in millimetresDL1L2L2L3a L3KeyDDirection of movementL1Length(37,5 2,5) mmL2Width(10 0,5) mmL3aUniform thicknessChamfer anglewithin the range 2 mm to 6 mm(35 5) Figure 1 Slider shape and dimensionsD1L4L6L7L1L32 L5L21Key1Leather sl
32、iders2Shoe rubber sliderDDirection of movementL3(46 2) mmL4(130 3) mmLicensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSIL1 minus L2(0 0,3) mm L4 minus L5(0 0,3) mm L6 minus L7(0 0,3) mmFigure 2 Typical arrangement of sliders on slider assembly (botto
33、m view)NOTEThe use of a template is recommended to ensure the slider dimensions fall within the stated tolerances.5.2Sliders5.2.1Leather slider, consisting of pit-tanned leather of density (1,0 0,1) g/cm and Shore D hardness 60 10 according to EN ISO 868.5.2.2Shoe rubber slider, consisting of refere
34、nce test material SBR 1 based on styrene-butadiene rubber ofShore A hardness 95, as specified in EN 522:1998.5.3BalanceThe balance shall be capable of measuring the mass of the loaded slider assembly to the nearest 10 g.5.4Calibrated weightsThree calibrated weights with different masses within the r
35、ange 2 kg to 7 kg, (e.g. 2 kg, 4 kg and 7 kg) for calibrating the test device.5.5Abrasive paper60 grade and 320 grade abrasive papers fitted to a plain rigid surface with a width greater than that of the slider assembly.Licensed Copy: Gilbert Athens, University of Birmingham, 10/06/2008 05:46, Uncon
36、trolled Copy, (c) BSI5.6Clean cotton cloth and/or brush6Calibration6.1Calibration by weightsMeasure and record the mass of the loaded slider assembly using the balance (5.3).Place the test device in a vertical position to allow it to pull a calibrated weight (5.4) against the measuring device(5.1.2)
37、 without friction, parallel to the bottom of the device.Take three measurements with each of the three calibrated weights. Record the three average results (calculated and indicated by the test device).Compare each of these three average results with the theoretical value. i.e.:mass of calibrated we
38、ightknown total load including slidersThe average deviation from the theoretical value shall be 0,01.6.2Other calibration methodsFor machines of special construction that cannot be calibrated by weights, use the calibration procedure recommended by the manufacturer.7Sampling and preparation of test
39、piecesTake test pieces, from both production (machine) and cross-machine directions, of dimensions approximately100 cm by 50 cm from a sample of the floor covering. If known, mark the machine direction on the test piece. Assemble panels and tiles so as to enable both machine and cross-machine direct
40、ions to be measured.Condition the test pieces for at least 24 h at the standard atmosphere (23 2) C and (50 5) % relative humidity or alternatively at (20 2) C and (65 5) % relative humidity.Clean the surface of laminate and resilient floor covering test pieces with the clean dry cotton cloth and us
41、e the brush to clean the surface of textile floor coverings. Do not use any cleaning agent.Relief floor coverings within the scope of CEN/TC 134 may be regarded as having a displacement volume of 4 cm/dm. For verification of this, determine the displacement volume as specified in annex A.8Preparatio
42、n of slidersPlane-grind the surface of new sliders with 60 grade abrasive paper (5.5) to ensure uniform thickness and then clean and plane-grind the surface of the sliders before testing using a 320 grade abrasive paper. During the plane- grinding the abrasive paper shall be in contact with all thre
43、e sliders. The abrasive strokes shall be uniformly to- and-from in the length direction of the sliders, with the final two strokes against the direction of slider motion.Remove any dust from the sliders. Repeat this preparation for every new set of 5 measurements.Licensed Copy: Gilbert Athens, Unive
44、rsity of Birmingham, 10/06/2008 05:46, Uncontrolled Copy, (c) BSI9ProcedureCondition the test device in the standard atmosphere for at least 24 h.Take the measurements in the machine direction and the cross-machine direction. If this is not known, take measurements in the direction of the lowest dyn
45、amic friction, verified by a sufficient number of preliminary tests.Take five measurements using the test device (5.1). For each measurement pull the slider along a new trace.The first two measurements can be non-representative and they shall be ignored. Record the horizontal forces over 0,30 m for the 3rd, 4th and 5th measurements for each direction.10 Calculation and expression of resultsRecord the value for traces 3 to 5 to the nearest 0,01 according to the following equation:m = F Mwhereis the dynamic coefficient of friction;Fis the average ho