Abstract
Quasi-isotropic carbon fibre reinforced polymers (CFRP) are widely used as structural materials in aerospace structures or other fields of engineering. They provide excellent strength and stiffness at low density, but their vibration damping capabilities are very low, making their application in vibration-subjected structures not efficient. This study deals with the improvement of the damping capabilities of quasiisotropic CFRP laminates by passive damping methods using both tough interleaves in the stacking sequence and surface bonded piezoelectric ceramics. Furthermore an analytical method for the calculation of loss factors and resonance frequencies for such laminates is introduced. The experimental results were also confirmed by a FEM-simulation.