Determination of Stiffness and Hardness of Glasses by using Acoustic Waves Testing

Álvaro Barbosa de Carvalho Júnior; Maurílio José Inácio; Adalto Soares da Fonseca Júnior; Geraldo Dias Pereira Júnior; Maria Helena Teles Lopes; Samara Guedes Ramos; José Higino Dias Filho; Mateus Souto Almeida

Determination of Stiffness and Hardness of Glasses by using Acoustic Waves Testing

( Vol-9,Issue-3,March 2022 ) OPEN ACCESS

Author(s):

Álvaro Barbosa de Carvalho Júnior, Maurílio José Inácio, Adalto Soares da Fonseca Júnior, Geraldo Dias Pereira Júnior, Maria Helena Teles Lopes, Samara Guedes Ramos, José Higino Dias Filho, Mateus Souto Almeida

Keywords:

Soda-lime Glass, Elastic Properties, Non-Destructive Testing, Acoustic Wave.

Abstract:

In this study we sought to develop a non-destructive test that uses the propagation of acoustic waves to characterize the stiffness and hardness of flat glasses. For this purpose, three different glass samples were investigated by using acoustic waves resulting from the impact caused by a steel sphere in free fall on the samples surface. As a result, it was found that the glass samples have different vibration frequency and this behavior is associated to the Young’s modulus and microhardness, values. The values calculated by the ultrasonic transmission method indicated that the increase in stiffness is related to the appearance ofamplitude peaks in the acoustic signal of the samples, attesting to the possibility of the method for characterizing the mechanical properties of glasses used in civil building.

Article Info:

Received: 03 Jan 2022, Received in revised form: 26 Feb 2022, Accepted: 11 Mar 2022, Available online: 19 Mar 2022