ISO INTERNATIONAL STANDARD 18926 Second edition 2012-06-01 Imaging materials Information stored on magneto-optical (MO) discs Method for estimating the life expectancy based on the effects of temperature and relative humidity Materiaux pour I'imageInformation stockée sur disques opto- magnétiques (MO) - Méthode d'estimation de I'espérance de vie basée sur les effets dela température et de I'humidite relative Reference number ISO 18926:2012(E) ISO @ ISO 2012 HS under ted without license from IHS Not for Resale ISO18926:2012(E) COPYRIGHTPROTECTEDDOCUMENT ISO2012 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 Case postale 56 · CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO 2012 -All rights reserved No reproductic etworking permitted without license from IHS Not for Resale ISO 18926:2012(E) Contents Page Foreword .iv Introduction 1 Scope 2 Purpose and assumptions 2.1 Purpose 2.2 Assumptions. 3 Normative references 4 Terms and definitions 5 Measurements 5.1 Summary... 3 5.2 Byte error rate (BER) 5.3 Test equipment. 5.4 Test specimen 6 Accelerated stress test plan 6.1 General 6.2 Stress conditions 6.3 Accelerated test cell samplepopulation 6.4 Time intervals. 7 Data evaluation. 7.1 Lognormal distribution model 7.2 Eyring acceleration model, 8 7.3 Acceleration factor. 9 7.4 Survivor analysis. 9 8 Disclaimer 10 Annex A (normative) Ten-step analysis outline. 11 Annex B (informative) Example of a test plan and data analysis 12 Bibliography 21 ili license from IHS Not for Resale