ISO INTERNATIONAL STANDARD 12110-1 First edition 2013-07-01 Metallic materials - Fatigue testing Variable amplitude fatigue testing Part 1: General principles, test method and reporting requirements Matériaux métalliques Essais de fatigue - Essais sous amplitudevariable Partie 1: Principes generaux, méthode d'essai et exigences sur le rapport d'essai Reference number ISO 12110-1:2013(E) TSO @ IS0 2013 I without license from IHS Not for Resale IS0 12110-1:2013(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2013 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 +4122 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2013 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 12110-1:2013(E) Contents Page Foreword ..iv 1 Scope 2 Normative references .1 3 Terms and definitions 4 Principle of test. ..4 4.1 Control signal generation. .4 4.2 Overview of test procedure ..4 5 Original loading time history .5 5.1 General .5 5.2 Data filtering .5 6 Loading time history description .6 6.1 General .6 6.2 Time history sequences description .6 6.3 Cycle counting description . 6 7 Programmed blocks ..7 8 Transition matrix and generation of control signal from the matrix .7 8.1 Establishment of the matrix. 8.2 Reconstruction of the loading signal. .8 8.3 Control signal simplification. .9 9 Conducting fatigue testing under variable amplitude conditions .9 10 Test report for each individual specimen .10 10.1 General .10 10.2 Original loading description 10 10.3 Testing conditions .10 10.4 Preliminary analysis of test data for each specimen and for a series of specimens ..12 Annex A (informative) Standard loading time histories .18 Annex B (informative) Example of loading signal reconstruction by random draw in the transition matrix. .19 Annex C (informative) Preliminary analysis of test data on a single specimen .21 Bibliography .24 iii Not for Resale