EN 12503-4-2013 8424 Sports mats - Part 4 Determination of shock absorption《运动垫 第4部分 减震测定》.pdf

1、BSI Standards PublicationBS EN 12503-4:2013Sports matsPart 4: Determination of shock absorptionCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12503-4:2013 BRITISH STANDARD

2、National forewordThis British Standard is the UK implementation of EN 12503-4:2013.It supersedes BS EN 12503-4:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee SW/136/22, Sports, Playground and other RecreationalEquipment - Gymnasium and Playing Fie

3、ld Equipment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by

4、 BSI StandardsLimited 2013ISBN 978 0 580 80134 1ICS 97.220.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2013.Amendments issued since publicationDate T

5、ext affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12503-4:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12503-4 July 2013 ICS 97.220.30 Supersedes EN 1

6、2503-4:2001English Version Sports mats - Part 4: Determination of shock absorption Tapis de sport - Partie 4 : Dtermination des caractristiques damortissement au choc Sportmatten - Teil 4: Bestimmung der Dmpfungseigenschaften This European Standard was approved by CEN on 12 April 2013. CEN members a

7、re 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 references concerning such national standards may be obtained on application to

8、 the CEN-CENELEC 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 into its own language and notified to the CEN-CENELEC Management C

9、entre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithu

10、ania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussel

11、s 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12503-4:2013: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from

12、 IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references . 4 3 Principle 4 4 Apparatus . 4 4.1 Indentors 4 4.2 Release mechanism . 6 4.3 Accelerometer 6 4.4 Data capture and processing . 6 4.5 Thickness measurement 6 5 Test piece . 6 6 Conditioning

13、 and test temperature 7 7 Procedure . 7 7.1 Procedure A (types 1 to 11) . 7 7.2 Procedure B (type 12) 8 7.2.1 Homogeneity test . 8 7.2.2 Shock absorption test 9 8 Expression of results . 10 8.1 Procedure A 10 8.2 Procedure B 10 8.2.1 Homogeneity test . 10 8.2.2 Shock absorption test 10 9 Test report

14、 10 Bibliography 12 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 3 Foreword This document (EN 12503-4:2013) has been prepared by Technica

15、l Committee CEN/TC 136 “Sports, playground and other recreational facilities and equipment”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2014,

16、and conflicting national standards shall be withdrawn at the latest by January 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. T

17、his document supersedes EN 12503-4:2001. This standard EN 12503 “Sports mats“ consists of: Part 1: Gymnastic mats, safety requirements Part 2: Pole vault and high jump mats, safety requirements Part 3: Judo mats, safety requirements Part 4: Determination of shock absorption Part 5: Determination of

18、the base friction Part 6: Determination of the top friction Part 7: Determination of static stiffness In relation to EN 12503-4:2001 the following main changes have been made: a) Clause 5 “Test piece“ has been amended. b) The document has been editorially revised. According to the CEN-CENELEC Intern

19、al Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ire

20、land, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or ne

21、tworking permitted without license from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 4 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 12503-1:2013, 9 to 11 of EN 12503-2:2001 and 12 of EN 12503-3:

22、2001. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any

23、 amendments) applies. EN 12390-3, Testing hardened concrete Part 3: Compressive strength of test specimens 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.

24、 The deceleration profile is processed to yield specified shock absorption parameters. 4 Apparatus 4.1 Indentors Metal indentors in accordance with the essential dimensions and masses are given in Table 1 and Figure 1 and Figure 2. Table 1 Indentors Type of mat Diameter mm Mass kg 1 150 0,5 10 0,1 2

25、 150 0,5 10 0,1 3 150 0,5 10 0,1 4 150 0,5 20 0,2 5 150 0,5 20 0,2 6 150 0,5 20 0,2 7 150 0,5 30 0,3 8 150 0,5 30 0,3 9 150 0,5 30 0,3 10 150 0,5 30 0,3 11 150 0,5 30 0,3 12 43 0,2 78 0,2 116 0,2 8 0,05 Copyright European Committee for Standardization Provided by IHS under license with CENNot for Re

26、saleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 5 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 accelerometer SR spherical radius Figure 1 Indentors

27、for gymnastics mats Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 6 Dimensions in millimetres Key 1 accelerometer d diameter (see Table 1)

28、 SR spherical radius Figure 2 Indentors for judo mats 4.2 Release mechanism Means of releasing the striker permitting the indentor to fall smoothly, vertically. 4.3 Accelerometer An accelerometer rigidly mounted on the indentor as indicated in Figure 1 and Figure 2. 4.4 Data capture and processing I

29、nstrumentation to record, display and process the accelerometer signals to produce the required shock absorption parameters, having a channel frequency class, including the accelerometer, of 1 000 in accordance with ISO 6487 and sampling frequency of not less than 10 kHz. 4.5 Thickness measurement M

30、eans of measuring the thickness of the mat to an accuracy of ( 5) mm (for types 9 to 11). 5 Test piece 5.1 The test piece is a whole mat laid on a smooth, solid concrete floor measuring at least 1 m 1 m. 5.2 The laboratory test floor shall be fully supported concrete (i. e. not a suspended floor) wi

31、th a minimum thickness of 100 mm. The compressive strength of the concrete shall be not less than 40 MPa when tested in accordance with EN 12390-3. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without lic

32、ense from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 7 6 Conditioning and test temperature Condition the test piece for a minimum of 24 h at (21 3) C immediately before the test and carry out the test at the same temperature. 7 Procedure 7.1 Procedure A (types 1 to 11) Carry out tests on mats typ

33、es 1 to 8 at 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 Type of

34、mat Fall height mm 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 9 1 200 1,0 10 1 200 1,0 11 1 200 1,0 Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from I

35、HS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 8 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 during the tests to ensure that the test piece is flat. For tests on types 9, 10, 11 mats, determine

36、 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 vertically onto the test piece. Record the signal from the accelerometer throughout the impact. Display the

37、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 surface (in mm) for mat types 1 to 8, percentage deflection of the surface (in %) for mat t

38、ypes 9 to 12; 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 10 tests at e

39、ach 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 locations indicated in Figure 4. Carry out the tests using the 78 mm diameter indentor from a fall height of 400 mm. Raise the str

40、iker 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 throughout the impact. Display the recorded signal and examine the traces to ensure that they contain no spurious peaks, etc. Process

41、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. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking perm

42、itted without license from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 9 Dimensions 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 4. The fall heights and indentors shall be as d

43、etailed in Table 3. Table 3 Test fall heights and indentors Test point Indentor Diameter mm Fall height mm B1 43 200 1,0 B2 43 600 1,0 B3 116 200 1,0 B4 116 600 1,0 B5 43 200 1,0 B6 43 600 1,0 B7 116 200 1,0 B8 116 600 1,0 Raise the striker to the required height and lock into position. Release the

44、striker and allow it to fall vertically 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. Copyright European Committee for Standardization Provided by IHS under l

45、icense with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 12503-4:2013EN 12503-4:2013 (E) 10 Process the data to obtain the following parameters: a) peak deceleration during the impact (g); b) deflection of the surface, in mm; c) resilience of the tested

46、 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 each test location. Tests at each locati

47、on 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 each parameter, which are the mean valu

48、es 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 is the mean value of the last three values. Then, calculate the difference between each of the eight individual points and the overall mean value. 8.2.2 Shock absorp