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Structural Damage Assessment Using Chaotic Dynamic Interrogation

[+] Author Affiliations
Michael Todd, Stephen Trickey, Mark Seaver

U.S. Naval Research Laboratory, Washington, D.C.

Jonathan Nichols, Lawrence Virgin

Duke University, Durham, NC

Paper No. IMECE2002-32026, pp. 613-620; 8 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Dynamic Systems and Control
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 0-7918-3629-0 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


This work considers a new technique for damage detection in vibration-based structural health monitoring. The technique involves exciting a structure with a low-dimensional chaotic input, reconstructing the attractor, and analyzing certain properties of the attractor for the subtle changes which may occur due to damage. Recourse is made to the Kaplan-Yorke conjecture for motivating the technique. The technique is then demonstrated in the laboratory on a beam subject to boundary clamp damage controlled by means of a special elastic clamp. The measurements are made with a special fiber optic strain measurement system whose key performance features are described.

Copyright © 2002 by ASME



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