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https://repositorio.ufba.br/handle/ri/15869
metadata.dc.type: | Artigo de Periódico |
Título : | Damage identification in bars with a wave propagation approach: performance comparison of five hybrid optimization methods |
Otros títulos : | Shock and Vibration |
Autor : | Tenenbaum, R. A. Stutz, L. T. Fernandes, K. M. |
metadata.dc.creator: | Tenenbaum, R. A. Stutz, L. T. Fernandes, K. M. |
Resumen : | The formulation and solution of the inverse problem of damage identification based on an one-dimensional wave propagation approach are presented in this paper. Time history responses, obtained from pulse-echo synthetic experiments, are used to damage identification. The identification process is built on the minimization of the squared residue between the synthetic experimental echo, obtained by using a sequential algebraic algorithm, and the corresponding analytical one. Five different hybrid optimization methods are investigated. The hybridization is performed combining the deterministic Levenberg-Marquardt method and each one of the following stochastic techniques: The Particle Swarm Optimization; the Luus-Jaakola optimization method; the Simulated Annealing method; the Particle Collision method; and a Genetic Algorithm. A performance comparison of the five hybrid techniques is presented. Different damage scenarios are considered and, in order to account for noise corrupted data, signals with 10 dB of signal to noise ratio are also considered. It is shown that the damage identification procedure built on the Sequential Algebraic Algorithm yielded to very fast and successful solutions. In the performance comparison, it is also shown that the hybrid technique combining the Luus-Jaakola and the Levenberg-Marquardt optimization methods provides the faster damage recovery. |
Palabras clave : | Structural damage identification Acoustic wave propagation in solids Sequential algebraic algorithm Hybrid optimization methods |
metadata.dc.rights: | Acesso Aberto |
URI : | http://repositorio.ufba.br/ri/handle/ri/15869 |
Fecha de publicación : | 2013 |
Aparece en las colecciones: | Artigo Publicado em Periódico (ICADS) |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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10.3233-SAV-130790.pdf | 1,44 MB | Adobe PDF | Visualizar/Abrir |
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