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Application of clan member signal method in structural damage detection

Guo Xun (郭 迅)1, B.F. Spencer2 and Lu Shunan (卢书楠)1

  1. Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China

  2. Dept of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, USA

Abstract: It is well known that in most cases, a reference is necessary for structural health diagnosis, and it is very difficult to obtain such a reference for a given structure. In this paper, a clan member signal method (CMSM) is proposed for use in structures consisting of groups (or clans) that have the same geometry, i.e., the same cross section and length, and identical boundary conditions. It is expected that signals measured on any undamaged member in a clan after an event could be used as a reference for any other members in the clan. To verify the applicability of the proposed method, a steel truss model is tested and the results show that the CMSM is very effective in detecting local damage in structures composed of identical slender members.

Keywords: damage detection; health monitoring; vibration based; clan member signal method; local damage

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Copyright 2009 IEM. Journal of Earthquake Engineering and Engineering Vibration. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as described below, without written permission from the Publisher. Copying of articles is not permitted except for personal and internal use, to the extent permitted by national copyright law, or under the terms of a license issued by the National Reproduction Rights Organization of China.