Comparação da evolução de dano em estruturas monitoradas por emissão acústica e a relação com dados de sismos

Abstract

Acoustic emission (AE) is called the process of releasing elastic waves caused by an internal discontinuity in a material. This study technique can help monitor damage and predict failure in structures, with wide applications in engineering areas. Seismology has similarities with EA, as the damage caused by seismic events, earthquakes, begins with the release of waves from the movement of tectonic plates. The b-value is one of the main parameters that both methodologies use to determine the conditions of the material or earth's crust when requested. Therefore, the present work carried out a comparison of the evolution of damage between acoustic and seismic events using the b-value, seeking to identify patterns of behavior between the different series of signals. The EA data was obtained by testing 3D printed samples, while the seismic data is collected from the earthquake in Turkey measuring 7.8 on the Richter scale in 2023. It was possible to observe that the b-value behaved in a way that indicates the precedents of the failure, or, of the main event, and its fall, when associated with many events, indicates a region of a lot of damage. Keywords: Acoustic Emission, Seismology, value-b.