ISO INTERNATIONAL STANDARD 18431-3 First edition 2014-03-15 Mechanical vibration and shock - Signal processing - Part 3: Methods of time-frequency analysis Vibrations et chocs mécaniques - Traitement du signal - Partie 3: Methodes d'analyses en temps et fréquence et par échelle de temps Reference number IS0 18431-3:2014(E) TSO @ IS0 2014 ed without license from IHS Not for Resale IS0 18431-3:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 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 @ IS0 2014 - All rights reserved No reproductic networking permitted without license from IHS Not for Resale IS0 18431-3:2014(E) Contents Page Foreword ..iv Introduction. .. 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols. ..2 5 Time-frequency transforms .2 5.1 Short-time Fourier transform .2 5.2 Generalized Wigner-Ville transform 3 5.3 Wavelet transform.. .4 Annex A (informative) Analysis of gear tooth fault using Wigner distribution .5 Bibliography .7 tneatonadizrightsreerved iii d by IHS under lic se with ISt ed without license from IHS Not for Resale