Uncertainty in the Determination of Young's Modulus of Ceramics Using the Impulse Excitation Technique at Elevated Temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F18%3A00321193" target="_blank" >RIV/68407700:21110/18:00321193 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3813/AAA.919169" target="_blank" >http://dx.doi.org/10.3813/AAA.919169</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3813/AAA.919169" target="_blank" >10.3813/AAA.919169</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Uncertainty in the Determination of Young's Modulus of Ceramics Using the Impulse Excitation Technique at Elevated Temperatures

Popis výsledku v původním jazyce

In this paper we describe the construction of a laboratory-made apparatus for the dynamical thermomechanical analysis (D-TMA) based on an impulse excitation technique (IET) and estimate the uncertainty of the measurement of Young's modulus of an unfired ceramic sample. The sample was measured during heating up to 1100 °C with a rate of 5 °C/min. Thermodilatometry and thermogravimetry were performed to determine the actual dimensions and mass of the sample in the same temperature regime. We assessed the influence of the repeatability of the directly measured values and the accuracy of the used measurers. We also took into account the inhomogeneity of the temperature field, sample fixing, estimation of Poisson's ratio and data processing. We found that 1) the highest part of the uncertainty comes from measuring the sides of the sample cross-section, 2) the sum of the uncertainties originating from heating the sample is comparable to the sum of the uncertainties at room temperature, 3) a maximal relative expanded uncertainty of Young's modulus is similar to 2.6 %.

Název v anglickém jazyce

Uncertainty in the Determination of Young's Modulus of Ceramics Using the Impulse Excitation Technique at Elevated Temperatures

Popis výsledku anglicky

In this paper we describe the construction of a laboratory-made apparatus for the dynamical thermomechanical analysis (D-TMA) based on an impulse excitation technique (IET) and estimate the uncertainty of the measurement of Young's modulus of an unfired ceramic sample. The sample was measured during heating up to 1100 °C with a rate of 5 °C/min. Thermodilatometry and thermogravimetry were performed to determine the actual dimensions and mass of the sample in the same temperature regime. We assessed the influence of the repeatability of the directly measured values and the accuracy of the used measurers. We also took into account the inhomogeneity of the temperature field, sample fixing, estimation of Poisson's ratio and data processing. We found that 1) the highest part of the uncertainty comes from measuring the sides of the sample cross-section, 2) the sum of the uncertainties originating from heating the sample is comparable to the sum of the uncertainties at room temperature, 3) a maximal relative expanded uncertainty of Young's modulus is similar to 2.6 %.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10307 - Acoustics

Projekt

<a href="/cs/project/GBP105%2F12%2FG059" target="_blank" >GBP105/12/G059: Kumulativní časově závislé procesy ve stavebních materiálech a konstrukcích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACTA ACUSTICA UNITED WITH ACUSTICA

ISSN

1610-1928

e-ISSN

1861-9959

Svazek periodika

104

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

269-276

Kód UT WoS článku

000428258600011

EID výsledku v databázi Scopus

2-s2.0-85043787564