This research leads with the analysis of a structural joint. Different arrays of steel sheets were joined using bolts. The structures were built in a metallic box filled with Granitic 0/3 sand. This box was used as a rigid body to transmit impacts and the sand as a medium to interact between the body and the structure. Then, an optical set-up was placed to measure the interaction of the impact along the different arrays. Measurements were made 5 cm before and 5 cm after the bolt. Results were analyzed by performing signal filtering and approaching a mathematical solution revealing that impact interaction can be harmonic or damped oscillations with more than $98\%$ accuracy.

This paper is focused on understanding how a wave was transmitted along arrays joined with rivets. The arrays were made of steel plates, and each section was joined to the other with five rivets. A total of three arrays were studied, which were compounded by one, two and three steel plates. To determine the wave transmission, a laser, a lens and a camera were set up in the experiment to calculate the in-plane motion both while the structure was still and during the indirect collisions. Results were studied by means of the general theory of elasticity coupled with spectral analysis from a general mathematical model; the latter fitted all the responses with a mean of 98% accuracy.