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1、BRITISH STANDARD BS EN 12503-4:2001 Sports mats Part 4: Determination of shock absorption The European Standard EN 12503-4:2001 has the status of a British Standard ICS 97.220.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 12503-4:2001 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 37270 7 National foreword This British Standard is the official English language version
3、of EN 12503-4:2001. Together with BS EN 12503-1:2001, BS EN 12503-2:2001, BS EN 12503-3:2001, BS EN 12503-5:2001, BS EN 12503-6:2001 and BS EN 12503-7:2001, it supersedes BS 1892-2.10:1990 which will be withdrawn on 15 August 2001.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
6、British 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 cha
7、nge, 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 copyright date displayed in this do
8、cument indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12503-4 April 2001 ICS 97.220.30 English version Sports mats - Part 4: Determination of shock absorption Tapis de sport - Partie 4: Dterm
9、ination des caractristiques damortissement au choc Sportmatten - Teil 4: Bestimmung der Dmpfungseigenschaften This European Standard was approved by CEN on 21 January 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europe
10、an Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical 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, Fr
11、ench, German). A version in any other language made by translation under the responsibility of a CEN member 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, Den
12、mark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-105
13、0 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12503-4:2001 E Page 2 EN 12503-4:2001 Contents Page Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 1 Scope
14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 3 Principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、 . .3 4 Apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 5 Test piece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 6 Conditioning and test temperature . . . . . . . . . . . . . . . . . . . . . . . .
16、 . . . . .5 7 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 8 Expression of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 9 Test report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17、. . . . . . . . . . . .9 Foreword This European Standard has been prepared by Technical Committee CEN/TC 136 “Sports, playground and other recreational equipment“, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication
18、of an identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall be withdrawn at the latest by October 2001. This standard EN 12503 “Sports mats“ consists of: Part 1: Gymnastic mats, safety requirements Part 2: Pole vault and high jump mats, safety requ
19、irements Part 3: Judo mats, safety requirements Part 4: Determination of shock absorption Part 5: Determination of the base friction Part 6: Determination of the top friction Part 7: Determination of static stiffness According to the CEN/CENELEC Internal Regulations, the national standards organizat
20、ions of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. ? Page 3 EN 12503-4:2001
21、1 Scope This European Standard specifies a method of test for the determination of shock absorption characteristics of sports mats types 1 to 8 of EN 12503-1:2001, 9 to 11 of EN 12503-2:2001 and 12 of EN 12503-3:2001. 2 Normative references This European Standard incorporates, by dated or undated re
22、ference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorp
23、orated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments). EN 12503-1:2001 Sports mats Part 1: Gymnastic mats, safety requirements EN 12503-2:2001 Sports mats Part 2: Pole vault and high jump mats, safety requireme
24、nts EN 12503-3:2001 Sports mats Part 3: Judo mats, safety requirements ISO 6487 Road Vehicles Measurement techniques in impact tests Instrumentation 3 Principle A striker is dropped onto the top surface of the mat and the deceleration during the impact monitored. The deceleration profile is processe
25、d to yield specified shock absorption parameters. 4 Apparatus 4.1 Indentors Metal indentors in accordance with the essential dimensions and masses given in table 1 and figures 1 and 2. Table 1- Indentors Type of mat Diameter mm Mass kg 1150 0,510 0,1 2150 0,510 0,1 3150 0,510 0,1 4150 0,520 0,2 5150
26、 0,520 0,2 6150 0,520 0,2 7150 0,530 0,3 8150 0,530 0,3 9150 0,530 0,3 10150 0,530 0,3 11150 0,530 0,3 12 43 0,2, 78 0,2, 116 0,2 8 0,05 ? Page 4 EN 12503-4:2001 Dimensions in millimetres Key 1 Additional mass (10 0,1) kg 2 Additional mass (10 0,1) kg 3 Cable port 4 Mass (10 0,1) kg 5 Space for acce
27、lerometer Figure 1- Indentors for gymnastics mats ? Page 5 EN 12503-4:2001 Dimensions in millimetres Key 1 Accelerometer Total mass of indentor (8 0,5) kg Figure 2 - Indentors for judo mats 4.2 Release mechanism Means of releasing the striker permitting the impactor to fall smoothly, vertically. 4.3
28、 Accelerometer An accelerometer rigidly mounted on the indentor as indicated in figures 1 and 2. 4.4 Data capture and processing Instrumentation to record, display and process the accelerometer signals to produce the required shock absorption parameters, having a channel frequency class, including t
29、he accelerometer, of 1000 in accordance with ISO 6487 and sampling frequency of not less than 10 kHz. 4.5 Thickness measurement Means of measuring the thickness of the mat to an accuracy of ( 5) mm (for types 9 to 11). 5 Test piece The test piece is a whole mat laid on a smooth, solid concrete floor
30、 (at least 1 m 1 m). 6 Conditioning and test temperature Condition the test piece for a minimum of 24 h at (21 3) C immediatly before the test and carry out the test at the same temperature. ? Page 6 EN 12503-4:2001 7 Procedure 7.1 Procedure A (types 1 to 11) Carry out tests on mats types 1 to 8 at
31、the eight locations indicated in figure 3. Carry out tests on mats types 9 to 11 in the centre of the mat. Dimensions in centimetres Figure 3 - Procedure A (types 1 to 11) Test location and number of tests The fall height shall be as detailed in table 2. Table 2 - Test fall heights Dimensions in mil
32、limetres Type of matFall height 1 150 1,0 2 300 1,0 3 400 1,0 4 800 1,0 5 800 1,0 6 800 1,0 7 800 1,0 8 800 1,0 91 200 1,0 101 200 1,0 111 200 1,0 For tests on types 1 and 2 mats, a metal frame with dimensions of 450 mm 350 mm and a minimum mass of 5,0 kg shall be placed centrally on the test piece
33、during the tests to ensure that the test piece is flat. For tests on types 9, 10, 11 mats, determine the thickness of the mat centrally along each side and calculate the mean thickness. Raise the striker to the required height and lock into position. Release the striker and allow it to fall vertical
34、ly onto the test piece. Record the signal from the accelerometer throughout the impact. Display the recorded signal and examine the traces to ensure that they contain no spurious peaks etc. ? Page 7 EN 12503-4:2001 Process the data to obtain the following parameters: a) peak deceleration during the
35、impact (g); b) deflection of the surface (in mm) for mat types 1 to 8, percentage deflection of the surface (in %) for mat types 9 to 12; c) resilience of the tested surface, in %. NOTE 1 The velocity and deflection during impact is obtained by successsive integration. NOTE 2 Resilience is calculate
36、d from the ratio of the squares of the velocities after and before impact, expressed as a percentage. Carry out 10 tests at each test location. Carry out the tests at each location at intervals of 1 min to 2 min. 7.2 Procedure B (type 12) 7.2.1 Homogeneity test Carry out the tests at the eight locat
37、ions indicated in figure 4. Carry out the tests using the 78 mm diameter indentor from a fall height of 400 mm. Raise the striker to the required height and lock into position. Release the striker and allow it to fall vertically onto the test piece. Record the signal from the accelerometer throughou
38、t the impact. Display the recorded signal and examine the traces to ensure that they contain no spurious peaks, etc. Process the data to obtain the peak deceleration value (g). Carry out five tests at each test location. Carry out the tests at each location at intervals of 1 min to 2 min. Dimensions
39、 in centimetres Figure 4 - Procedure B (type 12) Test location and number of tests 7.2.2 Shock absorption test Carry out the tests at the eight locations shown in figure 3. ? Page 8 EN 12503-4:2001 The fall heights and indentors shall be as detailed in table 3. Table 3 - Test fall heights and indent
40、ors Dimensions in millimetres Test point Indentor diameter Fall height B1 43200 1,0 B2 43600 1,0 B3116200 1,0 B4116600 1,0 B5 43200 1,0 B6 43600 1,0 B7116200 1,0 B8116600 1,0 Raise the striker to the required height and lock into position. Release the striker and allow it to fall vertically onto the
41、 test piece. Record the signal from the accelerometer throughout the impact. Display the recorded signal and examine the traces to ensure that they contain no spurious peaks etc. Process the data to obtain the following parameters: a) peak deceleration during the impact (g); b) deflection of the sur
42、face, in mm; c) resilience of the tested surface, in %. NOTE 1 The velocity and deflection during impact is obtained by successive integration. NOTE 2 Resilience is calculated from the ratio of the squares of the velocities after and before impact, expressed as a percentage. Carry out five tests at
43、each test location. Tests at each location shall be carried out at intervals of 1 min to 2 min. 8 Expression of results 8.1 Procedure A Each test location being tested 10 times, the retained value for each point is the mean value of the last eight values. Then, calculate the overall mean values, for
44、 each parameter, which are the mean values of the values obtained at each of the eight test locations. For types 9 to 11 express the deflection as a percentage of the mat thickness. 8.2 Procedure B 8.2.1 Homogeneity test Each test location being tested five times, the retained value for each point i
45、s the mean value of the last three values. Then, calculate the difference between each of the eight individual points and the overall mean value. Page 9 EN 12503-4:2001 8.2.2 Shock absorption test Each test location being tested five times, the retained value for each point is the mean value of the
46、last three values. Calculate the overall mean values, for each parameter, form the mean values of each two series of tests undertaken using similar conditions (B1 B5, B2 B6, B3 B7, B4 B8). 9 Test report The test report shall contain the following: a) reference to this standard EN 12503-4; b) complet
47、e identification of the mats tested including type, manufacturers reference and date of fabrication; c) the temperature of test; d) the indentor used; e) the fall heights used; f) the thickness of mats type 9, 10, 11; g) the mean values of the parameters measured; h) the individual mean values for e
48、ach location; i) the individual test values, if required; j) details of any deviation from the procedure. BS EN 12503-4:2001 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
49、 view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyon