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.
Structural Damage Assessment Using Chaotic Dynamic Interrogation
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Todd, M, Trickey, S, Seaver, M, Nichols, J, & Virgin, L. "Structural Damage Assessment Using Chaotic Dynamic Interrogation." Proceedings of the ASME 2002 International Mechanical Engineering Congress and Exposition. Dynamic Systems and Control. New Orleans, Louisiana, USA. November 17–22, 2002. pp. 613-620. ASME. https://doi.org/10.1115/IMECE2002-32026
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