Using acoustics waves for characterization of ceramic roof tiles: a didactic proposal of non-destructive test

The aim of this study was to develop a simple methodology, capable of characterizing different properties of ceramic roof tiles through the acoustics waves propagation. For this, was used the gravitational potential energy caused by the impact of a steel ball in free fall on the roof tiles surface. After this, the acoustic signal was captured using computer and free software. The results obtained showed the viability of the method as a didactic proposal to be implemented in the classes building materials laboratory carried out in civil engineering courses.

Keywords:
acoustic wave; roof tile; non-destructive test; properties

Authorship

Álvaro Barbosa de Carvalho Júnior

Universidade Estadual de Montes Claros, Programa de Pós-Graduação em Modelagem Computacional e Sistemas, Montes Claros, MG, Brasil.Universidade Estadual de Montes ClarosBrasilMontes Claros, MG, BrasilUniversidade Estadual de Montes Claros, Programa de Pós-Graduação em Modelagem Computacional e Sistemas, Montes Claros, MG, Brasil.

https://orcid.org/0000-0003-2158-2153

Maria Helena Teles Lopes ^**Endereço de correspondência: mariahelenatl23@gmail.com

https://orcid.org/0000-0003-0617-8355

Ana Caroline Nery Munoz Carvalho

Antônio Wilson Vieira

Denys Cunha Fonseca Garcia

Secretaria Estadual de Educação de Minas Gerais, Montes Claros, MG, Brasil.Secretaria Estadual de Educação de Minas GeraisBrasilMontes Claros, MG, BrasilSecretaria Estadual de Educação de Minas Gerais, Montes Claros, MG, Brasil.

^*Endereço de correspondência: mariahelenatl23@gmail.com

SCIMAGO INSTITUTIONS RANKINGS

Figures | Tables | Formulas

Figures (17)
Tables (1)
Formulas (2)

Telha branca (x = 60 cm)
2	3	3 / 2	α (dB/cm)
A_o = 6,600	A = 5,846	A /A_o = 0,886	- 0,018
3	4	4 / 3	α (dB/cm)
A_o = 5,846	A = 5,084	A /A_o = 0,870	- 0,020
4	5	5 / 4	α (dB/cm)
A_o = 5,084	A = 4,460	A /A_o = 0,877	- 0,019
Telha vermelha (x = 60 cm)
2	3	3 / 2	α (dB/cm)
A_o = 6,246	A = 5,421	A /A_o = 0,868	- 0,020
3	4	4 / 3	α (dB/cm)
A_o = 5,421	A = 4,592	A /A_o = 0,847	- 0,024
4	5	5 / 4	α (dB/cm)
A_o = 4,592	A = 4,008	A /A_o = 0,872	- 0,020