The Apparatus for Thermomechanical Analysis of Clay-based Ceramics

被引：2
|
作者：
Hulan, Tomas [1 ]
Stubna, Igor [1 ]
Al-Shantir, Omar [1 ]
Trnik, Anton [1 ]
机构：
[1] Constantine Philosopher Univ, Dept Phys, A Hlinku 1, Nitra 94974, Slovakia
来源：
MEASUREMENT SCIENCE REVIEW | 2023年 / 23卷 / 03期
关键词：
Impulse excitation technique; resonant frequency; internal damping; IMPULSE EXCITATION; YOUNGS MODULUS; ELASTIC-MODULI; VIBRATION; STEEL;
D O I：
10.2478/msr-2023-0017
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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 ?, 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.
引用
收藏
页码：130 / 135
页数：6
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