ISO INTERNATIONAL STANDARD 11491 First edition 2017-07 Implants for surgery Determination of impact resistance of ceramic femoral heads for hip joint prostheses Implants chirurgicaux - Détermination de la reésistance a I'impact des tetes de femur en céramique pour les protheses de la hanche Reference number IS0 11491:2017(E) International Organization for Standardization @ IS0 2017 e=ZHEJIANG INSTOF STANDARDIZATION C1 5956617 nitted without license from IHS IS0 11491:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland 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 written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 017 - All rights reserVed Not for Resale, 2017/8/21 01:03:16 networking permited without license from IHS IS0 11491:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Principle ..2 5 Apparatus and equipment. ..2 6 Procedure .5 6.1 General ..5 6.2 Test method for impact resistance (cyclic strength) .6 6.2.1 Setting the test specimen .6 6.2.2 Applying an impact.... ..6 6.2.3 Load cell data sampling .6 6.3 Test method for the cyclic load-release burst test. .. 6 6.3.1 Setting the test specimen. .6 6.3.2 Loading of the specimen ..6 6.3.3 Termination of the load-release cycles 7 6.3.4 Examination of the specimen. .7 1 Impact test: Calculation of an impact energy .7 8 Test report 7 Bibliography 9 iii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 Not for Resale, 2017/8/21 01:03:16 vithout license from IHS