ISO INTERNATIONAL STANDARD 21181 Second edition 2013-02-15 Light conveyor belts Determination of the relaxed elastic modulus Courroies transporteuses légeres - Détermination du module d'élasticité relaxé Reference number IS0 21181:2013(E) ISO @ IS0 2013 IS0 21181:2013(E) COPYRIGHTPROTECTEDDOCUMENT @IS02013 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior the requester. ISO copyright office Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax+41227490947 E-mail copyright@iso.org Web www.iso.org Published in Switzerland .ii IS02013-Allrightsreserved IS0 21181:2013(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions 4 Symbols. 5 Principle. ..2 6 Apparatus. 7 Test pieces .2 7.1 Shape, dimensions, number and selection. .2 7.2 Conditioning 8 Procedure ..3 9 Calculation and expression of results ..4 10 Test report. ..6 Bibliography 7 .sn.2013..l rightsreserved ii