<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>A dynamic thermomechanical analysis (D-TMA) apparatus is described for measuring the resonant frequency of the flexural vibration and the internal damping of the sample using the impulse excitation technique (IET). Since the measurement is conducted at temperatures up to 1250 °C, an electromagnetic impulser is used for excitation. The free vibrations are registered by an electret microphone, stored and then converted into a frequency spectrum using the fast Fourier transform, from which the resonant frequency can be found. The furnace is built from refractory porous alumina bricks and alumina fiber pads. The heating elements are four SiC rods connected to a temperature controller. The temperature is measured with a Pt-PtRh10 thermocouple in close proximity to the sample.</p>
</abstract>

A dynamic thermomechanical analysis (D-TMA) apparatus is described for measuring the resonant frequency of the flexural vibration and the internal damping of the sample using the impulse excitation technique (IET). Since the measurement is conducted at temperatures up to 1250 °C, an electromagnetic impulser is used for excitation. The free vibrations are registered by an electret microphone, stored and then converted into a frequency spectrum using the fast Fourier transform, from which the resonant frequency can be found. The furnace is built from refractory porous alumina bricks and alumina fiber pads. The heating elements are four SiC rods connected to a temperature controller. The temperature is measured with a Pt-PtRh10 thermocouple in close proximity to the sample.

The Apparatus for Thermomechanical Analysis of Clay-based Ceramics

Measurement Science Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"The Apparatus for Thermomechanical Analysis of Clay-based Ceramics"}

A dynamic thermomechanical analysis (D-TMA) apparatus is described for measuring the resonant frequency of the flexural vibration and the internal damping of...

The Apparatus for Thermomechanical Analysis of Clay-based Ceramics

Published Online: Jul 16, 2023

Page range: 130 - 135

Received: Feb 02, 2023

Accepted: Jun 08, 2023

DOI: https://doi.org/10.2478/msr-2023-0017

Keywords
Impulse excitation technique, resonant frequency, internal damping

© 2023 Tomáš Húlan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

The Apparatus for Thermomechanical Analysis of Clay-based Ceramics

Published Online: Jul 16, 2023

Page range: 130 - 135

Received: Feb 02, 2023

Accepted: Jun 08, 2023

DOI: https://doi.org/10.2478/msr-2023-0017

KeywordsImpulse excitation technique, resonant frequency, internal damping

© 2023 Tomáš Húlan et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Impulse excitation technique, resonant frequency, internal damping