Debonding detection of FRP strengthened concrete beams by using impedance measurements and an ensemble PSO adaptive spectral model

Sun, Rui; Sevillano Bravo, Enrique y Perera Velamazán, Ricardo (2015). Debonding detection of FRP strengthened concrete beams by using impedance measurements and an ensemble PSO adaptive spectral model. "Composite Structures", v. 125 ; pp. 374-387. ISSN 0263-8223. https://doi.org/10.1016/j.compstruct.2015.02.011.

Descripción

Título: Debonding detection of FRP strengthened concrete beams by using impedance measurements and an ensemble PSO adaptive spectral model
Autor/es:
  • Sun, Rui
  • Sevillano Bravo, Enrique
  • Perera Velamazán, Ricardo
Tipo de Documento: Artículo
Título de Revista/Publicación: Composite Structures
Fecha: Julio 2015
Volumen: 125
Materias:
Palabras Clave Informales: FRP strengthening; Concrete; Debonding; Electromechanical impedance; Spectral model; Structural health monitoring
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Mecánica
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

An impedance-based midspan debonding identification method for RC beams strengthened with FRP strips is presented in this paper using piezoelectric ceramic (PZT) sensor?actuators. To reach this purpose, firstly, a two-dimensional electromechanical impedance model is proposed to predict the electrical admittance of the PZT transducer bonded to the FRP strips of an RC beam. Considering the impedance is measured in high frequencies, a spectral element model of the bonded-PZT?FRP strengthened beam is developed. This model, in conjunction with experimental measurements of PZT transducers, is used to present an updating methodology to quantitatively detect interfacial debonding of these kinds of structures. To improve the performance and accuracy of the detection algorithm in a challenging problem such as ours, the structural health monitoring approach is solved with an ensemble process based on particle of swarm. An adaptive mesh scheme has also been developed to increase the reliability in locating the area in which debonding initiates. Predictions carried out with experimental results have showed the effectiveness and potential of the proposed method to detect prematurely at its earliest stages a critical failure mode such as that due to midspan debonding of the FRP strip.

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaBIA2013-46944-C2-1-PSin especificarUniversidad Politécnica de MadridDesarrollo de tecnologías inteligentes de monitorización estructural inalámbrica basadas en sensores FBG y PZT

Más información

ID de Registro: 35882
Identificador DC: http://oa.upm.es/35882/
Identificador OAI: oai:oa.upm.es:35882
Identificador DOI: 10.1016/j.compstruct.2015.02.011
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0263822315000872
Depositado por: Memoria Investigacion
Depositado el: 01 Mar 2016 10:01
Ultima Modificación: 31 Jul 2016 22:30
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