BS EN 12959-2000 Footwear - Test methods for shanks - Longitudinal stiffness《鞋袜 鞋底中间狭窄部分的试验方法 纵向劲度》.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12959:2000 The Euro

2、pean Standard EN 12959:2000 has the status of a British Standard ICS 61.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Footwear Test methods for shanks Longitudinal stiffnessThis British Standard, having been prepared under the direction of the Sector Committee for Materi

3、als and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 July 2000 BSI 07-2000 ISBN 0 580 34282 4 BS EN 12959:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the official English language ve

4、rsion of EN 12959:2000. It supersedes BS 5131-4.18:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear and leather, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee

5、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-references

6、 The 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.

7、 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. Summary of pages This document comprises

8、 a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Ko

9、mitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 12959:2000 E EUROPEAN STANDARD EN 12959 NORME EUROPE ENNE EUROPA ISCHE NORM February 2000 ICS 61.060 E

10、nglish version Footwear Test methods for shanks Longitudinal stiffness Chaussures Me thodes dessai pour cambrions Rigidite longitudinale Schuhe Pru fverfahren fu r Gelenke La ngssteifigkeit This European Standard was approved by CEN on 1 January 2000. CEN members are bound to comply with the CEN/CEN

11、ELEC 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 Central Secretariat or to any

12、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 Central Secretariat has the same status as the official versions. CEN

13、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.Page 2 EN 12959:2000 BSI 07-2000 Foreword This European Standard

14、 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 August 2000, and conflicting national sta

15、ndards 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, Finland, France, Germany, Greece, Icela

16、nd, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Apparatus and materials 3 5 Sampling and conditioning 3 6 Test method 3 7 Expression of results 4 8 Test rep

17、ort 4Page 3 EN 12959:2000 BSI 07-2000 1 Scope This European Standard specifies a method for assessing the stiffness in the longitudinal direction of steel shanks used for the reinforcement of the waist region of womens shoes and of some mens and childrens shoes. 2 Normative references This European

18、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 appl

19、y 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 12222, Footwear Standard atmospheres for conditioning and testing of footwear and components for footwear. 3 Definitions For the pur

20、poses of this standard the following definition applies. 3.1 longitudinal stiffness the stiffness in the longitudinal direction of shanks as determined by measuring the deflection of the shank under specified conditions when loaded with a specified force 4 Apparatus and materials The following appar

21、atus and material shall be used. 4.1 A suitable test machine for the determination of the stiffness in the longitudinal direction of steel shanks with: a) a heel end clamp capable of clamping a fluted shank securely without crushing the flute and of dimensions such that 32 mm 1 mm of the shank are c

22、lamped. The angle of the clamp shall be capable of adjustment to ensure that the portion of shank to which a force is applied lies horizontal; b) a means of applying a downward force to the forward end of the shank of 2 N, 4 N, 6 N and 8 N with a tolerance of 5%; c) a means of measuring the vertical

23、 deflection of the shank at the point where the force is applied to an accuracy of 0,025 mm. 4.2 A laboratory timer or similar with an accuracy of 0,1 s. 4.3 Callipers and/or a stainless steel rule with an accuracy of 0,5 mm. 5 Sampling and conditioning The test specimen shall be a complete shank. A

24、t least three specimens of each type of shank shall be tested. Test specimens shall be conditioned for 48 h in a controlled atmosphere in accordance with EN 12222 prior to testing. Tests shall be carried out in a suitable conditioned atmosphere in accordance with EN 12222. Where this is not possible

25、 tests shall be carried out within 15 min of removing the test specimen from the conditioned atmosphere. 6 Test method 6.1 The shank is clamped at its heel end and bent as a cantilever beam by masses added at its forward end. The amount of bending is measured and used to calculate the flexural rigid

26、ity of the shank, a quantity which is a measure of stiffness and which is dependent on the metal of the shank and its cross-section but not on its length. 6.2 With the underside of the shank uppermost (normally the fluted side), insert the heel end centrally in its clamp (see 4.1a) so that 32 mm of

27、shank are clamped, with the end of the shank flush with the back of the clamp and the longitudinal axis of the shank perpendicular to the clamp edge. Tighten the clamp firmly to securely hold the shank. 6.3 Adjust the angle of the clamp so that the point of loading at the forward end of the shank is

28、 horizontal. 6.4 Place the displacement measuring device (see 4.1b) in position and adjust as necessary. 6.5 Smoothly apply a downward force of 2 N to the forward end of the shank with the centre of the load point being about 6 mm from the end of the shank. NOTE For shanks for high heeled shoes, a p

29、oint about 11 mm from the end of the shank may be used. 6.6 After 5 s measure the vertical deflection of the shank (see 4.1c) at the point of loading, a 1 , to the nearest 0,01 mm. 6.7 Remove the force and replace it with the force of 4 N so that the time interval between the application of the firs

30、t and second force is 10 s. 6.8 After 5 s measure the deflection, a 2 ,a si n6.3. 6.9 Repeat the procedure in 6.7 and 6.8 for forces of 6 N and 8 N giving deflection measurements a 3 , and a 4 , respectively. Check the correctness of these readings by checking that a 4 2 a 3 , a 3 2 a 2 , and a 2 2

31、a 1 , are approximately equal. 6.10 Remove the force from the shank and measure in mm the moment length of the shank from the front edge of the clamp to the centre point of the force application using the device described in 4.3. 6.11 Test two other shanks as described in 6.2 to 6.10.Page 4 EN 12959

32、:2000 BSI 07-2000 7 Expression of results 7.1 The flexural rigidity, S, in kilonewtons per square millimetre of the shank is given by the equation: S = WL 3 3a where W is the load (in newtons); a is the deflection produced (in millimetres); L is the moment length (in millimetres). Calculate the flex

33、ural rigidity of the shank from the experimentally determined values of W, a and L by substitution in the above equation. Take W as being 2 N and obtain the most accurate estimate of the corresponding value of a from the following equation: a=( 3 a 4 + a 3 2 a 2 2 3 a 1 ) 1 10 where a is the deflect

34、ion (in millimetres) produced per 2 N gravitational force; a 4 is the deflection (in millimetres) produced by applying a 8 N force; a 3 is the deflection (in millimetres) produced by applying a 6 N force; a 2 is the deflection (in millimetres) produced by applying a 4 N force; a 1 is the deflection

35、(in millimetres) produced by applying a 2 N force. 7.2 Calculate the values for S (in kilonewtons per square millimetre) for the three shanks separately and take the average. Record the result to the nearest kilonewtons per square millimetre. 8 Test report The test report shall include the following

36、 information: a) results, expressed in accordance with clause 7; b) reference to this test method; c) full description of the shank samples tested including commercial styles codes; colours, nature, etc.; d) the number of test specimens if other than three; e) any deviations from this standard test

37、method; f) date of testing.blankBS EN 12959:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

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