Abstract

CAMPILHO, Raul D.S.G.; MOURA, Marcelo F.S.F. de  and  DOMINGUES, Joaquim J.M.S.. Efeito da geometria na resistência residual à tracção de reparações por sobreposição simples de laminados de carbono-epóxido. C.Tecn. Mat. [online]. 2007, vol.19, n.3-4, pp.68-74. ISSN 0870-8312.

The present work consists on an experimental and numerical study of the tensile residual strength of single-strap adhesively bonded repairs made of carbon-epoxy composites. It is considered the failure mode, the remote failure stress and the equivalent stiffness of the repairs, as a function of the overlap length and patch thickness. In order to numerically simulate damage onset and growth, leading to the repair failure, a mixed-mode cohesive damage model based on the indirect use of Fracture Mechanics was used. Good agreement between experimental and numerical results was found, concerning the studied parameters.

Keywords : Repair; Composite; Adhesive joint; Finite Element Method.

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