Techno Press

Steel and Composite Structures   Volume 3, Number 1, February 2003, pages 33-46
Crack-bridging force transfer of composite strengthening: a dynamic point of view
P. A. Ov i g ne, M. Massenzio, E. Jacquelin and P. Hamelin

Abstract     [Full Text]
    This study focuses on the influence of a composite external strengthening on the natural frequencies of a steel beam with open cracks. In a first step, the leading parameters associated with the effect of the composite strengthening are experimentally identified. An analytical model is developed in order to quantify the importance of the force transfer within the resin interface. In a second step, the analytical model of a cracked beam with composite external strengthening is compared to experiments.
Key Words
    natural frequencies; mode shape; crack; external strengthening; shear stress.
Laboratoire M?canique Mat?riaux et Structures, Universit? Claude Bernard, 82 boulevard Niels Bohr, Domaine scientifique de la Doua, 69622 Villeurbanne, France

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