ISO INTERNATIONAL STANDARD 23524 Firstedition 2022-10 Plastics Determination of fracture toughness of films and thin sheets Essential work of fracture (EWF) method Plastiques - Détermination de la tenacité a la rupture des films et feuilles minces - Méthode du travail essentiel de rupture (EWF) Reference number IS0 23524:2022(E) ISO @IS02022 IS0 23524:2022(E) COPYRIGHTPROTECTEDDOCUMENT @IS02022 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 or ISO's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2022 - All rights reserved