Phys. Rev. E 68, 036215 (2003) [7 pages]Assessment of damage in an eight-oscillator circuit using dynamical forcingReceived 15 May 2003; published 23 September 2003 We employ chaotic interrogation of a circuit simulation of a structure in order to test for damage to the structure. The circuit simulation provides a realistic test of our attractor-based method and permits close control over parameters in the structure. In this circuit, simulating an eight-degree-of-freedom spring-mass system, we were able to detect changes of as little as 2% in the coupling between two oscillators in the circuit. This corresponded to detection of a 2% loss in stiffness to one spring in the modeled system. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.68.036215
DOI:
10.1103/PhysRevE.68.036215
PACS:
05.45.Tp, 05.45.Xt, 02.40.-k, 02.50.-r
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