1、May 2017 English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 97.220.10!%dr“2659679www.din.deDIN EN
2、 13865Surfaces for sports areas Determination of angled ball behaviour Tennis;English version EN 13865:2017,English translation of DIN EN 13865:2017-05Sportbden Bestimmung des winkligen Ballverhaltens Tennis;Englische Fassung EN 13865:2017,Englische bersetzung von DIN EN 13865:2017-05Sols sportifs D
3、termination du comportement du rebond angulaire dune balle Tennis;Version anglaise EN 13865:2017,Traduction anglaise de DIN EN 13865:2017-05SupersedesDIN EN 13865:200403www.beuth.deDocument comprises 9 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be co
4、nsidered authoritative.04.17 DIN EN 13865:2017-05 2 A comma is used as the decimal marker. National foreword This document (EN 13865:2017) has been prepared by Technical Committee CEN/TC 217 “Surfaces for sports areas” (Secretariat: AFNOR, France). The responsible German body involved in its prepara
5、tion was DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-01-22 AA “Synthetic surfaces (national mirror committee for CEN/TC 217/WG6 and WG 11)”. Amendments This standard differs from DIN EN 13865:2004-03 as follows: a) Figure 1 has been
6、 replaced by an equation; b) the test procedure sequence has been updated; c) the temperature range for the on-site testing has been deleted. Previous editions DIN EN 13865: 2004-03 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13865 March 2017 ICS 97.220.10 Supersedes EN 13865:2003English Ve
7、rsion Surfaces for sports areas - Determination of angled ball behaviour - Tennis Sols sportifs - Dtermination du comportement du rebond angulaire dune balle - Tennis Sportbden - Bestimmung des winkligen Ballverhaltens - Tennis This European Standard was approved by CEN on 3 February 2017. CEN membe
8、rs 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 references concerning such national standards may be obtained on applicatio
9、n to 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 Manageme
10、nt Centre 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, L
11、ithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue M
12、arnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13865:2017 EEN 13865:2017 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 4 4 Apparatus . 4 5 Test pieces . 5
13、 6 Conditioning and test temperature 5 6.1 Laboratory tests . 5 6.2 On-site tests . 5 7 Preparation of tennis balls 5 7.1 Conditioning 5 7.2 Pre-compression . 5 8 Procedure. 5 9 Calculation and expression of results 6 10 Test report . 7 DIN EN 13865:2017-05 EN 13865:2017 (E) 3 European foreword This
14、 document (EN 13865:2017) has been prepared by Technical Committee CEN/TC 217 “Surfaces for sports areas”, the secretariat of which is held by AFNOR. 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 b
15、y September 2017 and conflicting national standards shall be withdrawn at the latest by September 2017. 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 su
16、ch patent rights. This document supersedes EN 13865:2003. In comparison with the previous edition, the following main modifications have been made: Figure 11 “Relationship between components of ball incidence and rebound“ has been replacedby a formula; the test procedure sequence has been updated; t
17、he temperature range for the on-site testing has been deleted. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Eston
18、ia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13865:201
19、7-05 N1)National footnote: Here, reference is made to a non-existent Figure 11; it should read Figure 1 instead. N1)EN 13865:2017 (E) 4 1 Scope This European Standard specifies a method for the determination of the behaviour of a tennis ball striking a sports surface at an angle. 2 Normative referen
20、ces 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 amendments) applies. EN
21、12229, Surfaces for sports areas - Procedure for the preparation of synthetic turf and needle-punch test pieces 3 Principle A ball is projected at an angle onto a sports surface and its velocity, angle and rebound are assessed. 4 Apparatus 4.1 Ball projector, providing a means of projecting a ball a
22、t a specified angle and velocity onto the surface without imparting spin greater than 3 rev/s. Suitable ball projection machines are available commercially. The release characteristics of the ball from the machine should be checked specifically (e.g. by stroboscopic photography) to ensure that spin
23、in excess of 3 rev/s does not occur. 4.2 Ball track monitor, providing a means of monitoring the track of the ball before and after impact so that its velocity can be measured to an accuracy of 0,05 m/s and its angle of impact and rebound to 0,1. The uncertainty in the precision of the measuring tec
24、hnique shall be no greater than 2 %. NOTE The track of the ball can be monitored photographically or by timing its passage between light-sensitive receivers. In the latter case, the angle can be deduced from the vertical and horizontal components of velocity. 4.3 Balls in accordance with 4.3.2 are u
25、sed in tests to demonstrate the conformity of a sports surface to a specification for the surface. 4.3.1 Balls in accordance with 4.3.3 are used to demonstrate the performance of a particular type of ball on a given surface, e.g. a particular brand of ball to be used in a tournament. 4.3.2 At least
26、three test tennis balls, taken from a pressurized ball canister, each covered with cloth weft comprising (45 5) % denier (6,67 dtex) polyamide and (55 5) % wool, and which, when tested in accordance with procedures detailed in the International Tennis Federation (ITF) Rules of Tennis, exhibit the fo
27、llowing properties: Ball mass: (57,6 0,3) g; Ball diameter: (66,0 0,50) mm; Forward deformation: (6,40 0,40) mm; DIN EN 13865:2017-05 EN 13865:2017 (E) 5 Return deformation (9,40 1,40) mm; Rebound (mean of five tests): (1,41 0,01) m. 4.3.3 When required, at least four commercially available tennis b
28、alls, taken from a pressurized ball canister, and which conform to the ITF Rules of Tennis. 4.3.4 Additional balls of either type (see 4.3.2 or 4.3.3), if necessary, for trial runs (see 8.2). 5 Test pieces Test pieces of synthetic turf and textile sports surfaces shall be prepared in accordance with
29、 EN 12229. Test pieces of sports surfaces shall have a minimum length 500 mm and minimum width 500 mm, and shall be tested in combination with the supporting layers to be used in service and using the method of attachment recommended in the manufacturers instructions. Ensure the test piece is not wa
30、rped or bowed. Loose laid test pieces shall be tested while anchored at the edges. Experience has shown that it is extremely difficult to produce laboratory samples of mineral surfaces that have the same characteristics as actual facilities. Wherever possible, mineral surfaces should be tested in si
31、tu. 6 Conditioning and test temperature 6.1 Laboratory tests Condition test pieces for a minimum of 3 h at the specified test temperature. Unless stated otherwise in the product specification, the test temperature shall be (23 2) C. 6.2 On-site tests Tests on site shall be conducted at ambient tempe
32、rature, with temperatures ranging from +10 C to +30 C, and at ambient humidity. 7 Preparation of tennis balls 7.1 Conditioning The balls shall be removed from their container at least 1 h prior to the test in order to ensure that they reach equilibrium with the prevailing ambient conditions. 7.2 Pre
33、-compression The balls shall be subjected to a pre-compression procedure, as described in detail in the ITF method, prior to being used in tests. 8 Procedure 8.1 Carry out all tests within 1 day of opening the ball canister (see 7.1). DIN EN 13865:2017-05 EN 13865:2017 (E) 6 8.2 Adjust the ball proj
34、ector (see 4.1) to deliver a ball onto the test piece at an angle of incidence of (16 2) and a velocity of (30 2) m/s, if necessary employing trial runs using additional balls (see 4.3.4). 8.3 Measure and record the temperature of the test surface area. 8.4 Project the first ball, onto the test piec
35、e surface and, using the ball track monitor (see 4.2), monitor and record the velocity and angle before and after impact. 8.5 Slightly move the test equipment and repeat using next test ball ensuring the ball does not impact an area previously tested. Slightly move the test equipment and repeat usin
36、g the third test ball. 8.6 Repeat the full sequence using each of the three balls a further two times so a total of nine tests are made (three with each test ball) ensuring each test is on a new area of the surface. NOTE It is important that no ball is fired more than 10 times so as to avoid degrada
37、tion of the ball. 8.7 If the surface has a directional pattern, such as the lay of the pile of synthetic turf, tests shall be made in the typical direction of play, i.e. parallel to the length of the court. 9 Calculation and expression of results From the monitoring of the ball before and after impa
38、ct, obtain the angles and resultant velocities of incidence and rebound and for each test calculate the Court Pace Rating using: ( ) ( )CPR=100 1- +a b-Te where the coefficient of restitution (COR) is given by: =fyiyethe coefficient of friction () (COF) is given by: ( )-=1+ix fxiyethe adjusted COR f
39、or temperature (eT) is given by: ( )= +c 23-Tee T and Vix= balls horizontal inbound velocity (m/s); Viy= balls vertical inbound velocity (m/s); Vfx= balls horizontal outbound velocity (m/s); Vfy= balls vertical outbound velocity (m/s); DIN EN 13865:2017-05 EN 13865:2017 (E) 7 T = mean temperature of
40、 test specimen (C); c = temperature coefficient (0,003); b = mean coefficient of restitution for all surface types (0,81); a = pace perception constant (150). For each series of nine tests, calculate the mean values of coefficient of restitution and Court Pace Rating. 10 Test report The test report
41、shall contain the following: a) reference to this European Standard, i.e. EN 13865:2017; b) complete identification of the surface tested, including the manufacturers reference and the type of supporting layers and their method of attachment; c) direction of test; d) test temperature; e) mean value of coefficient of restitution and mean value of Court Pace Rating; f) individual test results and Court Pace Rating, if required; g) condition of the surface at the time of test, i.e. wet or dry. DIN EN 13865:2017-05
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