【BS英国标准word原稿】BS EN 12503-4-2001 Sports mats. Determination of shock absorption.doc

，如果你需要更多标准可以到/kmust1进行免费查阅。 如果你购买的文档存在缺页、字迹模糊、乱码等情况，请大家通过论坛消息与我联系。british standard bs en12503-4:2001sports mats part 4: determination of shock absorptionthe european standard en 12503-4:2001 has the status of abritish standardics 97.220.30no copying without bsi permission except as permitted by copyright lawbs en 12503-4:2001national forewordthis british standard is the official english language version ofen 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 andbs en 12503-7:2001, it supersedes bs 1892-2.10:1990 which will bewithdrawn on 15 august 2001.the uk participation in its preparation was entrusted to technical committeesw/14, gymnasium and sports equipment, which has the responsibility to:aid enquirers to understand the text;present to the responsible 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 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 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 british standards are responsible for their correct application.compliance with a british standard does not of itself confer immunity from legal obligations.this british standard, having been 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 on15 june 2001amd. no.datecomments bsi 06-2001isbn 0 580 37270 7summary of pagesthis 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 document indicates when the document was last issued.amendments issued since publicationeuropean standard norme europenneeuropische normen 12503-4april 2001ics 97.220.30english versionsports mats - part 4: determination of shock absorptiontapis de sport - partie 4: dtermination des caractristiques damortissement au chocsportmatten - teil 4: bestimmung derdmpfungseigenschaftenthis 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 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 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 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, netherlands, norway, portugal, 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 o p i s c h es kom i tee f r nor m ung management centre: rue de stassart, 36 b-1050 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 epage 7en 12503-4:2001contentspageforeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34apparatus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35test piece . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56conditioning and test temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68expression of results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89test report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9forewordthis 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 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 requirementspart 2:pole vault and high jump mats, safety requirementspart 3:judo mats, safety requirementspart 4:determination of shock absorptionpart 5:determination of the base frictionpart 6:determination of the top frictionpart 7:determination of static stiffnessaccording to the cen/cenelec internal regulations, the national standards organizations ofthe 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.1 scopethis 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 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 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 12503-1:2001sports mats part 1: gymnastic mats, safety requirementsen 12503-2:2001sports mats part 2: pole vault and high jump mats, safety requirementsen 12503-3:2001sports mats part 3: judo mats, safety requirementsiso 6487road vehicles measurement techniques in impact tests instrumentation3 principlea striker is dropped onto the top surface of the mat and the deceleration during the impact monitored. the deceleration profile is processed to yield specified shock absorption parameters.4 apparatus4.1 indentorsmetal indentors in accordance with the essential dimensions and masses given in table 1 and figures 1 and 2.table 1- indentorstype of matdiametermmmasskg1150 0,510 0,12150 0,510 0,13150 0,510 0,14150 0,520 0,25150 0,520 0,26150 0,520 0,27150 0,530 0,38150 0,530 0,39150 0,530 0,310150 0,530 0,311150 0,530 0,31243 0,2, 78 0,2, 116 0,28 0,05key1 additional mass(10 0,1) kg2 additional mass(10 0,1) kg3 cable port4 mass (10 0,1) kg5 space for accelerometerdimensions in millimetresfigure 1- indentors for gymnastics matsdimensions in millimetreskey1 accelerometertotal mass of indentor (8 0,5) kgfigure 2 - indentors for judo mats4.2 release mechanismmeans of releasing the striker permitting the impactor to fall smoothly, vertically.4.3 accelerometeran accelerometer rigidly mounted on the indentor as indicated in figures 1 and 2.4.4 data capture and processinginstrumentation to record, display and process the accelerometer signals to produce the required shock absorption parameters, having a channel frequency class, including the accelerometer, of 1000 in accordance with iso 6487 and sampling frequency of not less than 10 khz.4.5 thickness measurementmeans of measuring the thickness of the mat to an accuracy of ( 5) mm (for types 9 to 11).5 test piecethe test piece is a whole mat laid on a smooth, solid concrete floor (at least 1 m 1 m).6 conditioning and test temperaturecondition 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.7 procedure7.1 procedure a (types 1 to 11)carry out tests on mats types 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.figure 3 - procedure a (types 1 to 11) test location and number of teststhe fall height shall be as detailed in table 2.dimensions in centimetrestable 2 - test fall heightsdimensions in millimetrestype of matfall height1150 1,02300 1,03400 1,04800 1,05800 1,06800 1,07800 1,08800 1,091 200 1,0101 200 1,0111 200 1,0for tests on types 1 and 2 mats, a metal frame with dimensions of 450 mm 350 mm and a minimum mass of5,0 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 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 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 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 calculated 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 testcarry 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 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 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 in centimetresfigure 4 - procedure b (type 12) test location and number of tests7.2.2 shock absorption testcarry out the tests at the eight locations shown in figure 3.page 9en 12503-4:2001the fall heights and indentors shall be as detailed in table 3.table 3 - test fall heights and indentorsdimensions in millimetrestest pointindentordiameterfall heightb143200 1,0b243600 1,0b3116200 1,0b4116600 1,0b543200 1,0b643600 1,0b7116200 1,0b8116600 1,0raise 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 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;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 each test location. tests at each location shall be carried out at intervals of 1 min to 2 min.8 expression of results8.1 procedure aeach 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 values of the values obtained ateach of the eight test locations. for types 9 to 11 express the deflection as a percentage of the mat thickness.8.2 procedure b8.2.1 homogeneity testeach 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 absorption testeach test location being tested five times, the retained value for each point is the mean value of the 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 reportthe test report shall contain the following:a) reference to this standard en 12503-4;b) complete 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 each location;i) the individual test values, if required;j) details of any deviation from the procedure.bs en12503-4:2001bsi389 chiswick high roadlondonw4 4albsi 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