Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests

Shannon wavelet entropy (SWE), a powerful mathematical tool for transient signal analysis, is applied to acoustic emission signals originated in crack like damages. In previous work, the complex Morlet Continuous Wavelet Transform (CWT) was applied to acoustic emission (AE) signals from dynamic test...

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Detalles Bibliográficos
Autores principales: Sassano, Miryam P., Zitto, Miguel E., Piotrkowski, Rosa
Formato: Objeto de conferencia Resumen
Lenguaje:Inglés
Publicado: 2017
Materias:
Ingeniería
Shannon Wavelet Entropy
Acoustic Emission
Fracture
Concrete
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/105729
https://cimec.org.ar/ojs/index.php/mc/article/view/5472
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-105729
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Shannon Wavelet Entropy
Acoustic Emission
Fracture
Concrete
spellingShingle Ingeniería
Shannon Wavelet Entropy
Acoustic Emission
Fracture
Concrete
Sassano, Miryam P.
Zitto, Miguel E.
Piotrkowski, Rosa
Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests
topic_facet Ingeniería
Shannon Wavelet Entropy
Acoustic Emission
Fracture
Concrete
description Shannon wavelet entropy (SWE), a powerful mathematical tool for transient signal analysis, is applied to acoustic emission signals originated in crack like damages. In previous work, the complex Morlet Continuous Wavelet Transform (CWT) was applied to acoustic emission (AE) signals from dynamic tests conducted on a reinforced concrete slab with a shaking table. Comparison of the evolution of the scale position of maximum values of CWT coefficients and the histories of response acceleration obtained in different seismic simulations allowed us to identify the frequency band corresponding to the fracture of concrete, which is the main failure mechanism. In the present work, the same frequency band, assigned to fracture, was considered. The discrete dyadic wavelet transform (DDWT), a faster transform algorithm, is first used as a filter to obtain the coefficients in the desired frequency band, and then SWE is calculated. SWE is extracted from each AE hit, which allows us to obtain the SWE evolution overthe test duration and connect sharp transitions of entropy values with the occurrence of dangerous macrocracks.
format Objeto de conferencia
Resumen
author Sassano, Miryam P.
Zitto, Miguel E.
Piotrkowski, Rosa
author_facet Sassano, Miryam P.
Zitto, Miguel E.
Piotrkowski, Rosa
author_sort Sassano, Miryam P.
title Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests
title_short Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests
title_full Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests
title_fullStr Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests
title_full_unstemmed Shannon Wavelet Entropy and Acoustic Emission Applied to Assess Damage in Concrete in Dynamical Tests
title_sort shannon wavelet entropy and acoustic emission applied to assess damage in concrete in dynamical tests
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/105729
https://cimec.org.ar/ojs/index.php/mc/article/view/5472
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