Ultrasonic wave propagation simulation to detect cracks in concrete structures using FEM

• Autores: Carlos Albino Meneguini, Luís Godinho, Daniel Dias da Costa, Delfim Soares Jr.
• Localización: Tecniacústica 2017: 48º Congreso Español de Acústica ; Encuentro Ibérico de Acústica ; European Symposium on Underwater Acoustics Applications ; European Symposium on Sustainable Building Acoustics : A Coruña 3-6 Octubre 2017 / coord. por Antonio Calvo Manzano, Antonio Pérez López, 2017, ISBN 978-84-87985-29-4, págs. 1023-1031
• Idioma: inglés
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• Resumen

  • Despite the recent technological developments, many techniques available for assessing concrete structures are still based on visual inspections and do not allow the timely detection of damage. In this context, ultrasonic-based methods may have several advantages, particularly in terms of the early stage detection of damage and cracking. In this paper, the propagation of ultrasonic waves inside a cracked concrete structure is analysed. For this purpose, an advanced finite element model formulated in the time domain was developed, which includes the presence of waves P, S and guided waves (e.g., surface waves). The model allows the simulation of the propagation of ultrasonic waves in a structure with the evolution of damage. The obtained results allow a better understanding of the phenomenon involved and, in this way, can contribute to the development of new cracking detection equipment.