A nonlinear system identification technique exploiting the dynamic response features of fully nonlinear physics-based plate models extracted by Higher-Order Spectral (HOS) analysis tools is developed. The changes induced by an imperfection in the dynamics through the structural nonlinearities are used as key detection mechanism. The differences in dynamic response of a baseline and a modified/imperfect structure are enhanced by the local nonlinearities induced by the structural modification which thus represent the specific objective of identification. The validation of the procedure and the developed algorithms is carried out through extensive experimental testing employing various plates, including isotropic and composite lay-ups, and excitation sources, including White Gaussian Noise and a train of impulses.
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ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 28–31, 2011
Washington, DC, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
978-0-7918-5481-5
PROCEEDINGS PAPER
Advanced System Identification of Plates Using a Higher-Order-Spectral Approach: Theory and Experiment Available to Purchase
Michele Pasquali,
Michele Pasquali
University of Rome La Sapienza, Rome, Italy
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Walter Lacarbonara,
Walter Lacarbonara
University of Rome La Sapienza, Rome, Italy
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Pier Marzocca
Pier Marzocca
Clarkson University, Potsdam, NY
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Michele Pasquali
University of Rome La Sapienza, Rome, Italy
Walter Lacarbonara
University of Rome La Sapienza, Rome, Italy
Pier Marzocca
Clarkson University, Potsdam, NY
Paper No:
DETC2011-47975, pp. 731-737; 7 pages
Published Online:
June 12, 2012
Citation
Pasquali, M, Lacarbonara, W, & Marzocca, P. "Advanced System Identification of Plates Using a Higher-Order-Spectral Approach: Theory and Experiment." Proceedings of the ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 4: 8th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A and B. Washington, DC, USA. August 28–31, 2011. pp. 731-737. ASME. https://doi.org/10.1115/DETC2011-47975
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