Experimental Free Vibration of Damaged RC Beam Models

Abstract:

Reinforced Concrete (RC) Beam undamaged and damaged were investigated by free vibration to obtain a variation of frequency values at different degree of damage. Experimental tests were carried out on RC beams in scale and in real scale. The damage of RC beams in real scale was obtained by cracking under static bending tests, while in the case of beam in scale is obtained by notches on the concrete cover with different width. In general, the effects on the dynamic response of diffused damages and of concentrated damages on a section of beam have been experimentally analyzed. The envelope of frequency response functions (FRFs) obtained by dynamic experimental tests was elaborated and the changes of natural frequency values were then correlated to the damage degree of RC beams. The experimental data have been discussed and analyzed by comparison with theoretical results.

• Periodical: Key Engineering Materials (Volume 827)
• Pages: 499-504
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.827.499
• Online since: December 2019
• Authors: R. Capozucca, E. Magagnini, M.V. Vecchietti
• Keywords: Damage, Notch, RC Beam Models, Vibration Test

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