Micro-crack Classification in Reinforced Concrete Walls by Parametric Analysis of Acoustic Emissions

Clavijo, Jorge Y Torres, N. Y Sánchez, Sandra Y Alvarez, J. Y Salas, Y. (2021) Micro-crack Classification in Reinforced Concrete Walls by Parametric Analysis of Acoustic Emissions. In: 5+1 International Meeting of Researchers in Materials and Plasma Technology (5+1 IMRMPT), 21 de Junio de 2021, Medellín, Colombia.

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Resumen

Fracture processes in brittle materials are governed by the generation and growth of micro-cracks. The acoustic emission technique, based on the elastic waves generated by cracks during their growth, is a way to follow the evolution of micro-cracks. Parametric analysis of emissions is based on some features that can be extracted from the waveforms and have been used on different materials to distinguish emissions originated from tensile and shear events. This classification is especially important in the study of fracturing in civil structures due to the presence of shear events that usually produce abrupt and violent collapses. This paper shows the results of parametric analysis on two types of tests performed on reinforced concrete walls. In the first test, in-plane diagonal compression is applied, looking for the generation of shear events and violent collapse. In the second one, out-of-plane force is applied to look for the generation of tensile-compression events and a non-abrupt collapse. Our results show that parametric analysis can distinguish between the two processes and suggest that it could be used as a method to predict the presence of shear events and the proximity to the violent collapse of structures.

Tipo de Elemento:	Conferencia o Taller artículo (Paper)
Asunto:	Q Ciencias > QC Physics T Tecnología > TA Engineering (General). Civil engineering (General) T Tecnología > TH Building construction
Division:	Facultad de Ciencias Exactas y Naturales > Programa de Física > Productividad
Depósito de Usuario:	Master Sandra Sánchez Sierra
Fecha Deposito:	19 May 2022 21:41
Ultima Modificación:	19 May 2022 21:41
URI:	http://sired.udenar.edu.co/id/eprint/7349

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