Vibration analysis of damaged RC beams strengthened with GFRP

In this paper, the envelope of Frequency Response Functions (FRFs) obtained by the dynamic experimental tests are shown and the changes of natural frequency values are correlated to the damage degree of beam elements. Finally, modelling of RC beams by finite element method (FEM) is developed for the undamaged beam and for the beam damaged with notches. Experimental results are discussed and a comparison between the experimental results and the theoretical and numerical data obtained is shown.