García Castillo, Shirley KalamisSánchez Sáez, SoniaBarbero Pozuelo, EnriqueNavarro Ugena, Carlos2010-09-272010-09-272005https://hdl.handle.net/10016/9306The 3rd International Conference on Structural Stability and Dynamics,, June 19-22, 2005, Kissimmee, FloridaIn this paper the behaviour of plates when they are subjected to normal impact under in-plane pre-stressed conditions was studied. Two kinds of lightweight materials were considered: aluminium alloy 7075 and quasi-isotropic glass fibre-reinforced vinylester resin. The residual velocity, the ballistic limit and, in the case of the composite material, the delaminated area, were measured in each test. Unstable cracks, that generate the catastrophic failure of the panel, were observed in the case of the aluminium at pre-stressed load levels lower than those inducing material yielding.application/pdfengImpactPannelsPre-stresedLaminatesAluminiumconference paperIngeniería MecánicaIngeniería Industrialopen access