Experimental analysis of the vibrational response of an adhesively bonded beam

This paper presents an experimental procedure for studying the influence that geometrical properties of adhesive joints have on the vibrational response of a metallic beam doubly supported on adhesive joints. A test bench has been developed for the experimental program. This procedure begins experimentally identifying the modal shapes. The beams are seismically excited and the influence of joint thickness and overlapping length on the beam motion is analyzed using the root mean square value of twenty-one transmissibility functions obtained along the length of the beam. The study is performed on resonance frequencies, peak amplitudes, and modal loss factors.