Browsing by Author "Bratti, Giovanni"
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- Comparative study of vibration measuring techniques applied to aluminum beams localized damagePublication . Silva, Edson Vinicius Garcia; Braz-César, Manuel; Ribeiro, J.E.; Bratti, GiovanniThis work analyses the feasibility of using a commercial sound level meter (SLM) to measure the dynamic properties of a structural element, i.e., vibration frequencies, using acoustic output data obtained during a rover impact test carried out with rover impact hammer on small beams. The acoustic measurements are compared with those obtained with the accelerometer during the impact tests. In this case, four small aluminum beams were tested under undamaged and damaged conditions. The latter was simulated using drilled holes with different diameters at the mid span of the aluminum beams. Data from acoustic and acceleration measurements were processed to obtain the frequency content of each signal. The results allowed demonstrating if the sound level meter is able to capture the natural frequencies and monitor the damage effects on the natural frequencies of the beams.
- The fire effect on non-load bearing LSF walls – numerical and simple calculation methodsPublication . Ferreira, Larissa Lourdes Luz; Piloto, P.A.G.; Bratti, GiovanniThis work presents a study on the effects of fire in non-loadbearing Light Steel Framing (LSF) walls. Since there is still a need to use a much more simplified method in fire resistance design, the objective of this study is to propose an equation that describes the effective width of the panel for the calculation of the fire resistance through one dimensional simplified analysis. Two different solution methods were proposed and validated with eleven different configurations of LSF walls in order to find which method is more effective