Abstract
This paper deals with the identification of incipient damage in structural elements by non-destructive test based on experimentally measured structural dynamical response. By applycation of the Hilbert transform to the recorded signal the so-called phase of the analytical signal is recovered and a proper functional is constructed in such a way that its global minimum gives ameasure of the damage level, meant as stiffness reduction. Minimization is achieved by applying a modified Ant Colony Optimization (ACO) for continuous variables, inspired by the ants’ forageing behavior. The modification consists in the application of a new perturbation operator, based on alpha stable Lévy distribution. Numerical application to three degrees of freedom system isproposed to show the method and test the performance.
Lingua originale | English |
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Titolo della pubblicazione ospite | Reliability and Optimization of Structural Systems |
Pagine | 37-44 |
Numero di pagine | 8 |
Stato di pubblicazione | Published - 2010 |
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Safety, Risk, Reliability and Quality