ISO INTERNATIONAL STANDARD 13937-4 First edition 2000-04-01 Textiles Tear properties of fabrics - Part 4: Determination of tear force of tongue- shaped test specimens (Double tear test) Textiles-Proprietésdedéchirementdesétoffes- Partie4:Détermination de laforce de déchirure des éprouvettes en languette (Essai de la doubledéechirure) Reference number ISO 13937-4:2000(E) ISO @ISO2000 Copyright International Organization for Standardizatior ded by IHS under lic e with ISO Not for Resale ISO13937-4:2000(E) PDFdisclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event ISO2000 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Casepostale56.CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail [email protected] Web www.iso.ch Printed in Switzerland ISO 2000-All rights reserved d by IHS unde No reproductic Not for Resale IS013937-4:2000(E) Foreword ISO (theInternationalOrganizationforStandardization)isaworldwidefederationofnational standardsbodies(isO member bodies). The work of preparing International Standards is normally carried out through isO technical liaison with isO, also take part in the work. isO collaborates closely with the International Electrotechnical Commission(lEC)onallmattersofelectrotechnicalstandardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 % of member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 13937 may be the subject of International Standard ISO 13937-4 was prepared by the European Committee for Standardization (CEN) in collaborationwithISOTechnicalCommitteeTC38,Textiles,SubcommitteeSC24,Conditioningatmospheresana (Vienna Agreement). ISO 13937 consists of the following parts, under the general title Textiles -Tear properties of fabrics: Part1:Determinationoftearforceusingballisticpendulummethod(Elmendorf) Part2:Determination oftearforceoftrouser-shapedtestspecimens (Singletearmethod) Part3:Determinationoftearforceofwing-shapedtestspecimens(Singletearmethod) Part4:Determinationoftearforceof tongue-shapedtestspecimens(Doubleteartest) Annexes A, B and C of this part of ISO 13937 are for information only. ii otforResale IS013937-4:2000(E) Contents Foreword 1 Scope. 2 Normative references 3 Terms and definitions 4 Principle 5 Sampling. 9 Apparatus 7 Atmosphere forconditioning andtesting 8 Preparation of test specimens.. .3 9 Procedure .5 10 Calculation and expression of results 11 Test report. Annex A (informative) Suggested procedure for sampling... Annex B (informative) Example of pattern for cutting out test specimens from the laboratory sample....9 AnnexC (informative)Samplecalculationof tearforce 10 Bibliography.. ISO 2000 - All rights reserved ational Organization for Standardiz