DIN EN 13087-5-2012 Protective helmets - Test methods - Part 5 Retention system strength German version EN 13087-5 2012《防护头盔 试验方法 第5部分 保持系统强度》.pdf

《DIN EN 13087-5-2012 Protective helmets - Test methods - Part 5 Retention system strength German version EN 13087-5 2012《防护头盔 试验方法 第5部分 保持系统强度》.pdf》由会员分享，可在线阅读，更多相关《DIN EN 13087-5-2012 Protective helmets - Test methods - Part 5 Retention system strength German version EN 13087-5 2012《防护头盔 试验方法 第5部分 保持系统强度》.pdf（19页珍藏版）》请在麦多课文档分享上搜索。

1、April 2012 Translation by DIN-Sprachendienst.English price group 11No 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

2、13.340.20!$Ui“1885070www.din.deDDIN EN 13087-5Protective helmets Test methods Part 5: Retention system strengthEnglish translation of DIN EN 13087-5:2012-04Schutzhelme Prfverfahren Teil 5: Festigkeit des HaltesystemsEnglische bersetzung von DIN EN 13087-5:2012-04Casques de protection Mthodes dessai

3、Partie 5: Rsistance du systme de rtentionTraduction anglaise de DIN EN 13087-5:2012-04SupersedesDIN EN 13087-5:2000-11www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 19 pages03.12 DIN EN 13087-5:2012-04 2 A comma is used as the decimal

4、marker. Start of application The start of application of this standard is 1 April 2012. National foreword This standard includes safety requirements. This standard has been prepared by Technical Committee CEN/TC 158 “Head protection” (Secretariat: BSI, United Kingdom). The responsible German body in

5、volved in its preparation was the Normenausschuss Persnliche Schutzaus-rstung (Personal Protective Equipment Standards Committee), Working Committee NA 075-01-02 AA Arbeitsschutzhelme. Amendments This standard differs from DIN EN 13087-5:2000-11 as follows: a) normative references have been adapted

6、to EN 960:2006 throughout the text; b) the size designations of the headforms have been brought in line with EN 960:2006 (the equivalent code letters according to EN 960:1994 are added in brackets); c) the standard has been editorially revised. Previous editions DIN EN 13087-5: 2000-11 EUROPEAN STAN

7、DARD NORME EUROPENNE EUROPISCHE NORM EN 13087-5 February 2012 ICS 13.340.20 Supersedes EN 13087-5:2000English Version Protective helmets - Test methods - Part 5: Retention system strength Casques de protection - Mthodes dessai - Partie 5: Rsistance du systme de rtention Schutzhelme - Prfverfahren -

8、Teil 5: Festigkeit des Haltesystems This European Standard was approved by CEN on 17 December 2011. 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-

9、to-date lists and bibliographical references concerning such national standards may be obtained on application 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 transl

10、ation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management 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

11、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of ex

12、ploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13087-5:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and defi

13、nitions .54 Prerequisites 55 Methods 55.1 General 55.2 Headform support, increasing load method .65.2.1 Principle 65.2.2 Apparatus .65.2.3 Procedure .75.2.4 Test report 75.3 Hook support, dynamic load method 75.3.1 Principle 75.3.2 Apparatus .75.3.3 Procedure .85.3.4 Test report 95.4 Headform suppor

14、t, dynamic load method 95.4.1 Principle 95.4.2 Apparatus .95.4.3 Procedure 105.4.4 Test report . 10Annex A (normative) Test results Uncertainty of measurement 15Annex B (informative) Significant technical changes between this European Standard and EN 13087-5:2000 16Annex ZA (informative) Relationshi

15、p between this European Standard and the Essential Requirements of EU Directive 89/686/EEC Personal Protective Equipment 17EN 13087-5:2012 (E) DIN EN 13087-5:2012-04 3 Foreword This document (EN 13087-5:2012) has been prepared by Technical Committee CEN/TC 158 “Head protection”, the secretariat of w

16、hich 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 the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the poss

17、ibility 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. This document supersedes EN 13087-5:2000. This document has been prepared under a mandate given to CEN by the Europe

18、an Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. Annex B provides details of significant technical changes between this European

19、Standard and the previous edition. This European Standard consists of the following ten parts: Part 1 : Conditions and conditioning; Part 2 : Shock absorption; Part 3 : Resistance to penetration; Part 4 : Retention system effectiveness; Part 5 : Retention system strength; Part 6 : Field of vision; P

20、art 7 : Flame resistance; Part 8 : Electrical properties; Part 9 : Mechanical rigidity1; Part 10 : Resistance to radiant heat. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Be

21、lgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

22、 1To be published. EN 13087-5:2012 (E) DIN EN 13087-5:2012-044 Introduction This European Standard is intended as a supplement to the specific product standards for protective helmets (helmet standards). This method or other test methods may be applicable to specified for complete helmets or parts t

23、hereof, and may be referenced in the appropriate helmet standards. Performance requirements are given in the appropriate helmet standard, as are such prerequisites as the number of samples, preconditioning, preparation of samples for the tests, sequence and duration of testing and assessment of test

24、 results. If deviations from the test method given in this standard are necessary, these deviations will be specified in the appropriate helmet standard. EN 13087-5:2012 (E) DIN EN 13087-5:2012-04 5 1 Scope This European Standard specifies methods of test for protective helmets. The purpose of these

25、 tests is to enable assessment of the performance of the helmet as specified in the appropriate helmet standard. This European Standard specifies the method of test for retention system strength. 2 Normative references The following documents, in whole or in part, are normatively referenced in this

26、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 960:2006, Headforms for use in the testing of protective helmets EN 13087-1, Protecti

27、ve helmets Test methods Part 1: Conditions and conditioning 3 Terms and definitions For the purposes of this document, terms and definitions given in this standard may be found in the appropriate helmet standard. 4 Prerequisites In order to implement this part of EN 13087, at least the following par

28、ameters shall be specified in the appropriate helmet standard: a) performance requirements; b) number of samples; c) preparation of samples; d) sequence of conditioning; e) sequence of tests; f) method of test - 5.2 (including 5.2.3.1 or 5.2.3.2), 5.3 or 5.4, and the initial and intermediate forces;

29、 g) sizes of the headforms; h) impact energy, including tolerance, of the falling mass - methods 5.3 and 5.4; i) fitting instructions. 5 Methods 5.1 General Testing shall be performed in ambient conditions specified in EN 13087-1. Three test methods are specified. The method to be used is specified

30、in the helmet standard. EN 13087-5:2012 (E) DIN EN 13087-5:2012-046 5.2 Headform support, increasing load method 5.2.1 Principle The helmet is supported on a headform and a specified, varying force is applied to the retention system via an artificial jaw. In method (a) (see 5.2.3.1) the ultimate ten

31、sile strength of the system alone is measured. In method (b) (see 5.2.3.2) the elongation of the system is measured as well. 5.2.2 Apparatus 5.2.2.1 General The apparatus shall include: a series of headforms; a rigid structure to support the headforms; an artificial jaw; a means of applying a variab

32、le tensile force to the artificial jaw; a means to measure the displacement of the artificial jaw. An arrangement of a suitable apparatus is shown in Figure 1. 5.2.2.2 Test headforms Headforms, conforming to EN 960:2006, 2.2, 3.1.2 and 3.2. The sizes to be used are specified in the helmet standard,

33、but shall be selected from size designations 495, 535, 575, 605 and 625 (equivalent to codes A, E, J, M and O, respectively, EN 960:1994). 5.2.2.3 Rigid structure Rigid structure, capable of supporting the headform so that it does not move during the test. 5.2.2.4 Artificial jaw Artificial jaw, comp

34、rising two rigid cylindrical rollers of diameter (12,5 0,5) mm, with their longitudinal axes separated by (75 2) mm. 5.2.2.5 Means of applying a known variable force to the artificial jaw Any suitable means may be used. 5.2.2.6 Means to measure the displacement of the artificial jaw Any suitable mea

35、ns may be used. EN 13087-5:2012 (E) DIN EN 13087-5:2012-04 7 5.2.3 Procedure 5.2.3.1 Method (a) Mount the helmet on the appropriate headform, pass the chinstrap through and secure it around the artificial jaw. Apply the initial tensile force as specified in the appropriate helmet standard to the art

36、ificial jaw. Increase the force at a rate of (20 2) N/min until the artificial jaw is released due to failure of the retention system. Record the maximum force measured during the test and the mode of failure of the retention system. 5.2.3.2 Method (b) Mount the helmet on the appropriate headform, p

37、ass the chinstrap through and secure it around the artificial jaw. Apply the initial tensile force as specified in the appropriate helmet standard in order to ensure that the fastening device is correctly tightened. Note the position, P0, of the load bearing spindle to the nearest millimetre. Increa

38、se the force over a period of (30 3) s up to the intermediate force specified in the appropriate helmet standard. Maintain this force for (120 3) s, then note the position, P1, of the load bearing spindle to the nearest millimetre, and, if required by the appropriate helmet standard, re-measure the

39、width of the chinstrap. Increase the force at a rate of (500 50) N/min until the artificial jaw is released due to failure of the retention system. Record the maximum force measured during the test and the mode of failure of the retention system. 5.2.4 Test report Method (a) Report the maximum force

40、 measured during the test and the mode of failure of the retention system. Method (b) Calculate and report the elongation of the retention system as the difference between positions P0and P1. Report the maximum force measured during the test and the mode of failure of the retention system, and, if r

41、equired, the width of the chinstrap. 5.3 Hook support, dynamic load method 5.3.1 Principle The helmet, including retention system, is fitted to a headform which is then subjected to a sudden downward force. The maximum and residual displacements of the headform are measured. 5.3.2 Apparatus 5.3.2.1

42、General The apparatus shall include: a series of headforms; a helmet support hook assembly; EN 13087-5:2012 (E) DIN EN 13087-5:2012-048 a rigid structure to support the helmet and loading system; a falling mass and associated guidance system; a means to measure impact speed; a means to measure the p

43、osition and displacement of the headform in a vertical direction. An arrangement of a suitable apparatus is shown in Figure 2. 5.3.2.2 Test headforms The headforms shall comply with EN 960:2006, 2.2, 3.1.2 and 3.2. The sizes to be used are specified in the helmet standard, but shall be selected from

44、 size designations 495, 515, 535, 555, 575, 585, 605 and 625 (equivalent to codes A, C, E, G, J, K, M and O, respectively, EN 960:1994). Each headform, together with the parts attached to it, shall have a total mass of (15 0,5) kg. 5.3.2.3 Helmet support hook assembly The helmet support hook assembl

45、y shall be made from steel and is shown in Figure 3. 5.3.2.4 Rigid structure The rigid structure shall adequately support the helmet and loading system during the test. 5.3.2.5 Falling mass and guidance system A guidance system shall be provided to enable the falling mass of (10 0,1) kg to be droppe

46、d in guided fall on to the metal end stop. The guidance system shall be such as to ensure that the falling mass falls with an impact speed of no less than 95 % of that which would theoretically obtain for a free fall. 5.3.2.6 Means to measure impact speed Means shall be provided to measure the speed

47、 of the falling mass at a distance of no more than 60 mm prior to impact, to within an accuracy of 1 %. The impact speed shall be measured during the commissioning of the apparatus. It need not be done for each test. 5.3.2.7 Means to observe the position and displacement of the headform in a vertica

48、l direction Any suitable means may be used. 5.3.3 Procedure Support the helmet from the rigid structure by means of the helmet support hook passing through a suitable hole drilled through the point of the helmet which corresponds with the central vertical axis of the headform. Insert the headform into the helmet and locate the guide so that the falling mass is free to move only along a vertical line tha