Low stiffness variation in structural systems: identification and localization

6533b83afe1ef96bd12a7978

RESEARCH PRODUCT

Low stiffness variation in structural systems: identification and localization

F. Marino Antonina Pirrotta Giorgio Barone

subject

Engineering Structural system Signal localization Hilbert transform symbols.namesake Control theory medicine Time domain Civil and Structural Engineering analytical signal business.industry Stiffness Building and Construction Structural engineering damage identiﬁcation Noise Identification (information)Settore ICAR/09 - Tecnica Delle Costruzioni Mechanics of Materials Frequency domain symbols measuring noise Hilbert transform medicine.symptom business Settore ICAR/08 - Scienza Delle Costruzioni

description

When a very low damage occurs, the undamaged structural response totally overlaps the damaged one either in time domain or in frequency domain; on the other hand, by considering some characteristics of the analytical signal, such as the phase, it has been possible to develop a damage identification procedure that allows the identification and localization of damage even if the structure experiences multiple damages at the same time. This procedure is also robust with respect to the presence of measuring noise. In order to assess the validity of the proposed damage identification procedure, numerical applications on single degree of freedom and 2 DOF and 4 DOF are presented using data records perturbed by measuring noise too. Copyright © 2008 John Wiley & Sons, Ltd.

year	journal	country	edition	language
2008-01-01

10.1002/stc.246 http://hdl.handle.net/10447/43437

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