BS EN 12803-2000 Footwear - Test methods for outsoles - Tensile strength and elongation《鞋袜 外底的试验方法 抗拉强度和伸长率》.pdf

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1、BRITISH STANDARD BS EN 12803:2000 Incorporating Corrigendum No. 1 Footwear Test methods for outsoles Tensile strength and elongation The European Standard EN 12803:2000 has the status of a British Standard ICS 61.060 BS EN 12803:2000 This British Standard, having been prepared under the direction of

2、 the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 June 2000 BSI 15 April 2004 ISBN 0 580 34262 X National foreword This British Standard is the official English language version of EN 12803:2000, including Corr

3、igendum July 2002. The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear and leather, 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 whi

4、ch implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publica

5、tion does not purport to include all the necessary provisions of a contract. Users are responsible for its 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 comm

6、ittee 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. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to

7、9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15131 Corrigendum No. 1 15 April 2004 Correction to the key in Figure 1 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN

8、 12803 February 2000 ICS 61.060 Incorporating corrigendum July 2002 English version Footwear Test methods for outsoles Tensile strength and elongation Chaussures - Mthodes dessai applicables aux semelles dusure - Rsistance la traction et allongement Schuhe - Prfverfahren fr Laufsohlen - Zugfestigkei

9、t und Lngsdehnung This European Standard was approved by CEN on 1 January 2000. 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 bi

10、bliographical references concerning such national standards may be obtained on application to the Central Secretariat 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

11、 of a CEN member into its own language and notified to the Central Secretariat 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,

12、 Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved wo

13、rldwide for CEN national Members. Ref. No. EN 12803:2000 EPage 2 EN 12803:2000 Contents Page Foreword 3 1 Scope 4 2 Normative references4 3 Definitions .4 4 Apparatus and material.4 5 Sampling and conditioning6 6 Test method 7 7 Expression of results.7 8 Test report.8 Bibliography .9 Page 3 EN 12803

14、:2000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 309, Footwear, the Secretariat of which is held by AENOR. 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 Augu

15、st 2000, and conflicting national standards shall be withdrawn at the latest by August 2000. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Fi

16、nland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 4 EN 12803:2000 1 Scope This European Standard specifies a method for the determination of the tensile strength and elongation of outsoles. 2 No

17、rmative references This 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

18、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. EN 10002-2 Metallic materials Tensile testing Part 2: Verification of the force measuring system of th

19、e tensile testing machines. EN 12222 Footwear Standard atmospheres for conditioning and testing of footwear and components for footwear. prEN 13400:1998 Footwear Sampling location of components for footwear. ISO 4661-1 Rubber, vulcanized or thermoplastic Preparation of samples and test pieces Part 1

20、: Physical tests. 3 Definitions For the purposes of this standard the following definitions apply: 3.1 tensile strength the tensile stress at maximum force 3.2 elongation at break the relative increase in length when subjected to the tension just required to rupture it 3.3 stress at a given elongati

21、on the tensile stress in the test length required to produce a given elongation 4 Apparatus and material The following apparatus and material shall be used: 4.1 Dies and cutters All dies and cutters used shall be in accordance with ISO 4661-1. Dies for preparation of dumb-bells shall have the dimens

22、ions given in table 1 and figure 1. The departure from parallelism at any point along the width of the narrow portion of the die shall nowhere exceed 0,05 mm. Page 5 EN 12803:2000 Dimensions in millimetres 1 Type of fixing to suit machine 2 Ground smooth 3 6 mm (ground) NOTE For dimensions A to F, s

23、ee table 1 Figure 1 Die for dumb-bell test pieces Page 6 EN 12803:2000 Table 1 Dimensions of dies for dumb-bells test pieces Dimensions in millimetres Dimension Type 1 Type 2 A Overall length (minimum) 115 75 B Width of ends 25,0 1,0 12,5 1,0 C Length of narrow portion 33,0 2,0 25,0 1,0 D Width of n

24、arrow portion 6,0 +0,4 0,0 4,0 0,1 E Transition radius outside 14,0 1,0 8,0 0,5 F Transition radius inside 25,0 2,0 12,5 1,0 4.2 Thickness gauge Thickness gauge, standing on a firm base and loaded with a dead weight such that the presser foot applies a pressure of 10 kPa 3 kPa. The gauge shall have

25、a presser foot, which is flat, circular and 10 mm 0,1 mm in diameter. The gauge shall have a scale division of 0,01 mm. 4.3 Tensile-testing machine The tensile-testing machine shall comply with the requirements of EN 10002-2, to an accuracy corresponding to grade B, with a constant rate of traverse

26、of 100 mm/min 10 mm/min, and should preferably be equipped with facilities for the autographic recording of stress and strain. 5 Sampling and conditioning The test specimen to be tested are taken in accordance to prEN 13400:1998. All test specimens shall be conditioned according to EN 12222 before t

27、esting, for a minimum of 24 h. The thickness of the test specimen shall be: - 2,0 mm 0,2 mm for polymeric and elastomeric compact outsoles; - 4,0 mm 0,2 mm for semi-expanded and cellular outsoles; - the original thickness, for leather outsoles. The test is being performed with at least 3 specimens.

28、Their uniform thickness (see specification above) shall be obtained by means of an appropriate splitting machine. If feasible, smooth original “skin“ surfaces of the sample shall remain unchanged in the specimens. This leads to three possible types of specimen: - Specimen with 2 original “skins“ S 2

29、; - Specimen with 1 original “skin“ S 1; - Specimen with no original “skin“ S 0. The final result shall be based on only specimens of the same type, which shall be stated in the report. Page 7 EN 12803:2000 6 Test method 6.1 Marking of test pieces If using a non-contact extensometer, mark the test p

30、ieces with two reference marks to define the test length as specified in table 2, using a suitable marker. The test piece shall be unstrained when it is marked. The lines shall be arched on the narrow part of the test piece, as shown in figure 2, i.e., equidistant from the centre of the test piece a

31、nd at right angles to its longitudinal axis. 6.2 Measurement of test pieces Measure the thickness at the centre and at each end of the test length with the thickness gauge (see table 2). The average value of the three measurements shall be used in calculating the area of the cross-section. 6.3 Proce

32、dure Insert the test piece into the tensile-testing machine, ensuring that the parallel-sided portions of the tab ends are gripped symmetrically so that the tension is distributed uniformly over the cross-section. If necessary, set up the extensometry device. Start the machine and monitor continuous

33、ly throughout the test the increase in distance between the two reference points (see 6.1) and the force. NOTE In making, visual measurements, care should be taken to avoid inaccuracies due to parallax. 7 Expression of results Calculate the tensile strength at break S tbexpressed in megapascal, usin

34、g the equation t x W F= S b tbwhere F bis the force recorded at break, in newtons W is the width of the narrow portion of the die, in millimetres t is the thickness of the test length, in millimetres Calculate the elongation at break E bexpressed as a percentage, using the equation L L - L= E o o b

35、b ) ( 100where L bis the test length at break, in millimetres L ois the initial test length, in millimetres Page 8 EN 12803:2000 Calculate the stress at a given elongation S eexpressed in megapascals, using the equation t x W F= S e ewhere F eis the force noted at the given strain, in newtons W is t

36、he width of the narrow portion of the die, in millimetres t is the thickness of the test length, in millimetres In all cases, the average for each property shall be reported. 8 Test report The test report shall include the following information: a) results, expressed in accordance with clause 7; b)

37、description of the samples tested including commercial styles codes, colours, nature, etc.; c) reference to this method of test; d) details of the test piece used; e) the median thickness of test piece used; f) date of testing. Dimension in millimetres 1 Test length (see table 2) Figure 2 Shape of d

38、umb-bell test pieces Table 2 Test length of dumb-bells Dimensions in millimetres Type of test piece Type 1 Type 2 Test length 25,0 0,5 20,0 0,5 Page 9 EN 12803:2000 Bibliography ISO 37 Rubber, vulcanized or thermoplastic Determination of tensile stress-strain properties. BS EN 12803:2000 BSI 389 Chi

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