ISO INTERNATIONAL STANDARD 8608 Second edition 2016-11-01 Mechanical vibration Road surface profiles - Reporting of measured data Vibrations mécaniques - Profils de routes - Méthode de présentation desrésultatsdemesures Reference number A IS0 8608:2016(E) ISO International Organization for Standardization @IS02016 vided by IHS under ted without license from IHS IS0 8608:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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 copyrightoffice 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 Intenationaibr PrganizationforStandardization etworking permitted without license from IHS IS0 8608:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions ..1 4 Symbols ..2 5 Uniform method of reporting .3 5.1 One-track data. .3 5.1.1 Description of the road profile. .3 5.1.2 Presentation of the smoothed power spectral density .4 5.2 Multiple-track data .7 5.3 Report .7 5.3.1 General .7 5.3.2 One-track data curve sheet 7 5.3.3 Multiple-track data curve sheet. .8 5.3.4 Parameters of analysis .8 5.3.5 Test conditions. .9 Annex A (informative) Example of a report. ..11 Annex B (informative) Road profile characterization and PSD fitting ..17 Annex C (informative) General guidance for use of the statistical road profile description .20 Annex D (informative) Considerations for PsD processing and precision .30 Bibliography .36 iii thout license from IHS