2020
DOI: 10.1590/1806-9126-rbef-2020-0340
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Utilização de ondas acústicas para caracterização de telhas cerâmicas: uma proposta didática de ensaio não destrutivo

Abstract: Resumo Nesse estudo buscou-se desenvolver uma metodologia simples, capaz de caracterizar diferentes propriedades de telhas cerâmicas por meio da propagação de ondas acústicas. Para isso, foi utilizada a energia potencial gravitacional provocada pelo impacto de uma esfera de aço em queda livre sobre a superfície de telhas cerâmicas, sendo o sinal acústico capturado com o auxílio de um computador e um software livre. Os resultados obtidos mostraram a viabilidade do método como proposta didática a ser implementad… Show more

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“…For analyze the propagation of acoustic waves on the surface of the samples, a simple methodology was used which consists of using a steel sphere and a free software [12]. This methodology has been used in the study of different materials, such as ceramic tiles, concrete and steel [10,11,13]. In the present study, the methodology was adapted and the brick samples were impacted using a steel sphere with 5.5 g and 23 mm diameter.…”
Section: Generation and Capture Of Acoustic Wavesmentioning
confidence: 99%
See 1 more Smart Citation
“…For analyze the propagation of acoustic waves on the surface of the samples, a simple methodology was used which consists of using a steel sphere and a free software [12]. This methodology has been used in the study of different materials, such as ceramic tiles, concrete and steel [10,11,13]. In the present study, the methodology was adapted and the brick samples were impacted using a steel sphere with 5.5 g and 23 mm diameter.…”
Section: Generation and Capture Of Acoustic Wavesmentioning
confidence: 99%
“…An alternative that could reduce the time and cost of preparing samples for the compression testing is the possibility of using non-destructive tests, especially those that use ultrasonic waves (frequency above 20 kHz) to determine the mechanical properties of ceramic materials [6,7,8]. However, techniques that use acoustic waves with frequencies below 20 kHz have been used for investigating compressive strength and other properties that can be associated to the behavior of the acoustic signal propagated in the material [9,10,11].…”
Section: Introductionmentioning
confidence: 99%