Para el diseño de embarcaciones construidas por laminados de GFRP se propone una inserción con capa viscoelástica para disminuir la propagación del daño producido por el impacto vertical del fondo de la nave con el mar o fenómeno de slamming. Mediante comparaciones de impactos verticales por caída de peso que reproducen la energía inferida al panel durante la navegación, se estudia la propagación del daño de paneles de preimpregnado curados OoA comparándolo con paneles modificados con inserción de capa viscoelástica. El empleo de lectura de datos de aceleraciones durante el impacto permite cuantificar mediante la formulación desarrollada los beneficios de la modificación observando el comportamiento de la fuerza, el desplazamiento y la energía que devuelve el panel luego del impacto y que no se convierte en daño intralaminar e interlaminar.

Planing hull vessel built with polymer matrix laminates and fiberglass reinforcements (GFRP) suffer structural damage due to the phenomenon of slamming during navigation, due to the impact of the boat hull on the free surface of the water at high speed. A modification in the manufacture of the laminates for these fast boats is proposed, consisting of the insertion of an additional layer of a hybrid material, formed by elastomer encapsulated in an ABS polymer cell. Using GFRP specimens made from pre-impregnated material and reproducing the characteristic impacts of slamming, it is possible to compare the modified material with the introduction of the viscoelastic layers with the response under the same conditions as the unmodified laminates. Additionally, the panels have been tested using impacts due to weight drop at different energies, which allow determining the material damage threshold as a function of the energy absorbed, and to establish a comparison with the GFRP panels modified by observation in fluorescent light. It is verified that the proposal to reduce the effect of these impacts on the generation of damage to the material and its progression throughout the service life of the vessel is effective.

The planning hull, are types of boats very used in our days, and require special maintenance and repair. It is proposed the insertion of a viscoelastic layer inside the laminated panels of the ships built with GFRP, to protect them from the impacts of slamming. Unmodified and modified laminate panels were manufactured to perform result comparisons. With the reproduction of the phenomenon of fatigue in the laboratory, testing them in the impact machine, the use of strain gauges and by characterization with fluorescent penetrating inks to observe the evolution of micro cracks. It is verified that the proposed modification is the future of shipbuilding of this type of vessel.