Acoustic waves testing to evaluate the compressive strength of ceramics bricks

Álvaro Barbosa de Carvalho Júnior, Maria Helena Teles Lopes, Ana Caroline Nery Munoz Carvalho, Samara Guedes Ramos, Thiago de Castro Guimarães, Maurício Prado Martins

Acoustic wave, ceramic, compressive testing

The present study seeks to develop a simple methodology capable of relating the propagation of acoustic waves with the compressive strength of ceramic sealing bricks. For this purpose, were captured acoustic signals generated by the impact of a steel sphere on the surface of ceramic bricks from three different origins. With the acoustic signal as a function of frequency, was possible to identify the main amplitude peak, which increases with the increase in compressive strength. Other characteristics of the acoustic signal, such as for instance a greater number of amplitude peaks presented below 5 mHz, could be also related to the compressive strength of the bricks indicating a possibility of fast and non-destructive testing.

Received: 19 Nov 2021, Received in revised form: 26 Dec 2021, Accepted: 06 Jan 2022, Available online: 20 Jan 2022

10.22161/ijaers.91.13