ISO INTERNATIONAL STANDARD 20283-4 First edition 2012-04-15 Mechanical vibration Measurement of vibration on ships - Part 4: Measurement and evaluation of vibration of the ship propulsion machinery Vibrations mécaniques Mesurage des vibrations a bord des navires Partie 4: Mesurage et évaluation des vibrations des machines de propulsion des navires Reference number ISO 20283-4:2012(E) ISO @ISO2012 No reproo Not for Resale ISO 20283-4:2012(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 copyright@iso.org Web www.iso.org Published in Switzerland @ ISO 2012 - All rights reserved or networking permitted without license from IHS Not for Resale ISO 20283-4:2012(E) Contents Page Foreword ..iv Introduction 1 Scope 2 Normativereferences 3 Terms and definitions 4 Vibration tests. 4.1 Instrumentation. 4.2 Test conditions. 4.3 Test procedure .. 4.4 Data processing 5 4.5 Measurements 5 Evaluation criteria 14 6 Test report 15 Annex A (informative) Manoeuvring, transient measurements 16 Annex B (informative) Evaluation of vibration at mechanical azimuth drives (e.g. Schottel rudder propellers) and shaft lines by measurements on non-rotating parts Annex C (informative) Evaluation of the vibration of a Voith-Schneider propeller by measurements on non-rotating parts. 18 Bibliography 20 ili ut license from IHS Not for Resale