DIN EN ISO 13935-2-2014 Textiles - Seam tensile properties of fabrics and made-up textile articles - Part 2 Determination of maximum force to seam rupture using the grab method (IS.pdf

1、July 2014Translation by DIN-Sprachendienst.English price group 10No 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 59

2、.080.30!%7A“2203097www.din.deDDIN EN ISO 13935-2Textiles Seam tensile properties of fabrics and made-up textile articles Part 2: Determination of maximum force to seam rupture using the grabmethod (ISO 13935-2:2014);English version EN ISO 13935-2:2014,English translation of DIN EN ISO 13935-2:2014-0

3、7Textilien Zugversuche an Nhten in textilen Flchengebilden und Konfektionstextilien Teil 2: Bestimmung der Hchstzugkraft von Nhten mit dem Grab-Zugversuch(ISO 13935-2:2014);Englische Fassung EN ISO 13935-2:2014,Englische bersetzung von DIN EN ISO 13935-2:2014-07Textiles Proprits de rsistance la trac

4、tion des coutures dtoffes et darticles textilesconfectionns Partie 2: Dtermination de la force maximale avant rupture des coutures par la mthodedarrachement (Grab test) (ISO 13935-2:2014);Version anglaise EN ISO 13935-2:2014,Traduction anglaise de DIN EN ISO 13935-2:2014-07SupersedesDIN EN ISO 13935

5、-2:1999-04www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 16 pages06.14 DIN EN ISO 13935-2:2014-07 2 A comma is used as the decimal marker. National foreword This document (EN ISO 13935-2:2014) has been prepared by Technical Committee I

6、SO/TC 38 “Textiles” in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 06

7、2-05-21 AA Physikalisch-technologische Prfverfahren fr Textilien. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 139 DIN EN ISO 139 ISO 7500-1 DIN EN ISO 7500-1 ISO 10012 DIN EN ISO 10012 ISO 13934-1 DIN EN ISO 13934-1 ISO 13934-2 DIN

8、EN ISO 13934-2 ISO 13935-1 DIN EN ISO 13935-1 Amendments This standard differs from DIN EN ISO 13935-2:1999-04 as follows: a) Clause 1 “Scope” has been extended to include fabrics which exhibit stretch characteristics imparted by the presence of an elastomeric fibre and mechanical or chemical treatm

9、ent; b) Clause 2 “Normative references” has been updated. Previous editions DIN EN ISO 13935-2: 1999-04 DIN EN ISO 13935-2:2014-07 3 National Annex NA (informative) Bibliography DIN EN ISO 139, Textiles Standard atmospheres for conditioning and testing DIN EN ISO 1421, Rubber- or plastics-coated fab

10、rics Determination of tensile strength and elongation at break DIN EN ISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/ compression testing machines Verification and calibration of the force-measuring system DIN EN ISO 10012, Measurement management syst

11、ems Requirements for measurement processes and measuring equipment DIN EN ISO 13934-1, Textiles Tensile properties of fabrics Part 1: Determination of maximum force and elongation at maximum force using the strip method DIN EN ISO 13934-2, Textiles Tensile properties of fabrics Part 2: Determination

12、 of maximum force using the grab method DIN EN ISO 13935-1, Textiles Seam tensile properties of fabrics and made-up textile articles Part 1: Determination of maximum force to seam rupture using the strip method DIN EN ISO 13935-2:2014-07 4 This page is intentionally blank EN ISO 13935-2 April 2014 I

13、CS 59.080.30; 61.020 Supersedes EN ISO 13935-2:1999English Version Textiles - Seam tensile properties of fabrics and made-up textile articles - Part 2: Determination of maximum force to seam rupture using the grab method (ISO 13935-2:2014) Textiles - Proprits de rsistance la traction des couturesdto

14、ffes et darticles textiles confectionns - Partie 2: Dtermination de la force maximale avant rupture des coutures par la mthode darrachement (Grab test)(ISO 13935-2:2014) Textilien - Zugversuche an Nhten in textilen Flchengebilden und Konfektionstextilien - Teil 2: Bestimmung der Hchstzugkraft von Nh

15、ten mit dem Grab-Zugversuch (ISO 13935-2:2014) This European Standard was approved by CEN on 11 February 2014. 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 alte

16、ration. Up-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 mad

17、e by translation 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, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centr

19、e: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13935-2:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EU

20、ROPENNEEUROPISCHE NORM2Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5 3 Terms and definitions 5 4 Principle 6 5 Sampling . 6 6 Apparatus 6 7 Atmosphere for conditioning and testing . 7 8 Preparation of seams and of test specimens 7 8.1 Preparation of seams, if requ

21、ired, before testing . 7 8.2 Dimensions . 7 8.3 Preparation of test specimens 8 9 Procedure 9 9.1 Gauge length 9 9.2 Rate of extension . 9 9.3 Mounting of test specimens 9 9.4 Operation 10 10 Calculation and expression of results . 10 11 Test report . 10 Annex A (informative) Arrangements of jaws fo

22、r the grab test . 11 Bibliography 12 DIN EN ISO 13935-2:2014-07 EN ISO 13935-2:2014 (E) ForewordThis document (EN ISO 13935-2:2014) has been prepared by Technical Committee ISO/TC 38 “Textiles” in collaboration with Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of wh

23、ich 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 October 2014, and conflicting national standards shall be withdrawn at the latest by October 2014. Attention is drawn to the pos

24、sibility 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 ISO 13935-2:1999. According to the CEN-CENELEC Internal Regulations, the national stand

25、ards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lu

26、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 13935-2:2014 has been approved by CEN as EN ISO 13935-2:2014 without any modification. 3DIN EN ISO 13935-2:2014-07EN ISO

27、13935-2:2014 (E)EN ISO 13935 consists of the following parts, under the general title Textiles Seam tensile properties of fabrics and made-up textile articles: Part 1: Determination of maximum force to seam rupture using the strip method Part 2: Determination of maximum force to seam rupture using t

28、he grab method IntroductionThis part of ISO 13935 has been prepared in the context of several test methods for determination of certain mechanical properties of textiles using mainly tensile testing machines, e.g. tensile properties, seam tensile properties, tear properties, seam slippage. The proce

29、dure for these standards agrees where appropriate. The results obtained by one of the methods should not be compared with those obtained by the other methods. See Bibliography for informative references.Where it is intended to compare the seam maximum force values of sewn seams with the fabric maxim

30、um force, it is important to use the same type of test, test conditions and test specimens in the tests in this part of ISO 13935 and ISO 13934-2 (see Bibliography).4DIN EN ISO 13935-2:2014-07 EN ISO 13935-2:2014 (E) 1 ScopeThis part of ISO 13935 specifies methods for the determination of seam maxim

31、um force of sewn seams when the force is applied perpendicularly to the seam. This part of ISO 13935 describes the method known as the grab test.NOTE ISO 13935-1 describes the method known as the strip test. For informative references see the Bibliography.The method is mainly applicable to woven tex

32、tile fabrics, including fabrics which exhibit stretch characteristics imparted by the presence of an elastomeric fibre, mechanical or chemical treatment. It may be applicable to fabrics produced by other techniques. It is normally not applicable to geotextiles, nonwovens, coated fabrics, textile-gla

33、ss woven fabrics and fabrics made from carbon fibres or polyolefin tape yarns (see Bibliography).The sewn fabrics may be obtained from previously sewn articles or may be prepared from fabric samples, as agreed by the parties interested in the results.This method is applicable to straight seams only

34、and not to curved seams.The method is restricted to the use of constant rate of extension (CRE) testing machines.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the e

35、dition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 139, Textiles Standard atmospheres for conditioning and testingISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compressio

36、n testing machines Verification and calibration of the force-measuring systemISO 10012, Measurement management systems Requirements for measurement processes and measuring equipment3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1constant-rate-of

37、-extension (CRE) testing machinetensile-testing machine provided with one clamp which is stationary and another clamp which moves with a constant speed throughout the test, the entire testing system being virtually free from deflectionSOURCE: ISO 13934-1:20135DIN EN ISO 13935-2:2014-07EN ISO 13935-2

38、:2014 (E)3.2grab testtensile test in which only the centre part of the test specimen is gripped in the jaws of the testing machineSOURCE: ISO 13934-2:20133.3maximum force to seam rupturemaximum force recorded when a test specimen with a seam perpendicular to the direction of extension is taken to se

39、am rupture during a tensile test under the specified conditionsSOURCE: ISO 13935-1:20143.4gauge lengthdistance between the two effective clamping points of a testing deviceNote 1 to entry: The effective clamping points (or lines) of jaws can be checked by clamping a test specimen under defined prete

40、nsion with carbon copy paper to produce a gripping patternon the test specimen and/or the jaw facesSOURCE: ISO 13934-1:20134 PrincipleA fabric test specimen having a seam in the middle is gripped in its centre part by jaws of specified dimensions and is extended perpendicularly to the seam at a cons

41、tant rate until the seam ruptures. The maximum force to seam rupture is recorded.5 SamplingSelect samples either in accordance with the procedure laid down in the material specification for the fabric, or as agreed between the interested parties.If preparation of seams prior to testing is required,

42、avoid test specimens from folded or creased areas, selvedges and areas not representative of the fabric.For seams obtained from previously sewn articles ensure that the test specimens contain seams in straight line only and are representative for the relevant seam type of the textile article. Record

43、 any details in the test report.6 Apparatus6.1 CRE machineMetrological confirmation system of the tensile-testing machine shall be in accordance with ISO 10012.The constant-rate-of-extension (CRE) machine shall have the general characteristics given in 6.1.1 to 6.1.6:6.1.1 The tensile-testing machin

44、e shall be provided with means for indicating or recording the force applied to the test specimen in stretching it to rupture. Under conditions of use, the accuracy of the apparatus shall be class 1 of ISO 7500-1. The error of the indicated or recorded maximum force at any point in the range in whic

45、h the machine is used shall not exceed 1 %.6.1.2 If a class 2 tensile testing machine according to ISO 7500-1 is to be used, this shall be stated in the test report.6.1.3 If recording of force is obtained by means of data acquisition boards and software, the frequency of data collection shall be at

46、least eight per second.6DIN EN ISO 13935-2:2014-07 EN ISO 13935-2:2014 (E) 6.1.4 The machine shall be capable of a constant rate of extension of 50 mm/min, with an accuracy of 10 %.6.1.5 The machine shall be capable of setting the gauge length to (100 1) mm.6.1.6 The clamping device of the machine s

47、hall be positioned with the central point of the two jaws in the line of applied force, the front edges shall be at right angles to the line of applied force and their clamping faces shall be in the same plane.The jaws shall be capable of holding the test specimen without allowing it to slip and des

48、igned so that they do not cut or otherwise weaken the test specimen.The faces of the jaws shall be smooth and flat, except that when, even with packing, the test specimen cannot be held satisfactorily with flat-faced jaws, engraved or corrugated jaws can be used to prevent slippage. Other auxiliary

49、materials for use with either smooth or corrugated jaws to improve specimen gripping include paper, leather, plastics or rubber.For the grab test, the dimensional clamping area of the fabric shall be (25 mm 1 mm) x (25 mm 1 mm). This area can be achieved by either the method given in a) or b) and illustrated in Annex A.a) One clamp (25 mm) x (40 mm min., preferably 50 mm), positioned with the wider dir