Publications [#282385] of Lawrence N. Virgin
- Todd, M; Trickey, S; Seaver, M; Nichols, J; Virgin, L, Structural damage assessment using chaotic dynamic interrogation,
American Society of Mechanical Engineers, Dynamic Systems and Control Division (Publication) Dsc, vol. 71
pp. 613-620 [doi]
(last updated on 2019/09/16)
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.