Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/4162
Título: Adhesively-bonded repair proposal for wood members damaged by horizontal shear using carbon-epoxy patches
Autor: Campilho, Raul
Moura, M. F. S. F. de
Ramantani, Dimitra A.
Morais, J. J. L.
Barreto, A. M. J. P.
Domingues, J. J. M. S.
Palavras-chave: Cohesive zone models
Composite
Finite element analysis
Repair
Wood
Data: 2010
Editora: Taylor & Francis
Relatório da Série N.º: The Journal of Adhesion; Vol. 86, Issue 5-6
Resumo: In this work, a repair technique with adhesively bonded carbon-epoxy patches is proposed for wood members damaged by horizontal shear and under bending loads. This damage is characterized by horizontal crack growth near the neutral plane of the wood beam, normally originating from checks and shakes. The repair consists of adhesively bonded carbon-epoxy patches on the vertical side faces of the beam at the cracked region to block sliding between the beam arms. An experimental and numerical parametric analysis was performed on the patch length. The numerical analysis used the finite element method (FEM) and cohesive zone models (CZMs), with an inverse modelling technique for the characterization of the adhesive layer. Trapezoidal cohesive laws in each pure mode were used to account for the ductility of the adhesive used. To fully reproduce the tests, horizontal damage propagation within the wood beam was also simulated. A good correlation with the experiments was found. Regarding the effectiveness of the repair, for the conditions selected for this work, a full strength recovery was achieved for the bigger value of patch length tested.
Peer review: yes
URI: http://hdl.handle.net/10400.22/4162
ISSN: 0021-8464
1545-5823
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/00218464.2010.484318#.Uxhz885qyZR
Aparece nas colecções:ISEP – CIDEM – Artigos

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