<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The flexural mechanical strength was measured at room and elevated temperatures on green ceramic samples made from quartz electroporcelain mixture. An apparatus exploited the three-point-bending mechanical arrangement and a magazine for 10 samples that are favorable at the temperature measurements from 20 °C to 1000 °C. A description of the apparatus from the point of possible sources of uncertainties is also given. The uncertainty analysis taking into account thermal expansion of the sample and span between the supports is performed for 600 °C. Friction between the sample and supports as well as friction between mechanical parts of the apparatus is also considered. The value of the mechanical strength at the temperature of 600 °C is 13.23 ± 0.50 MPa, where the second term is an expanded standard uncertainty. Such an uncertainty is mostly caused by inhomogeneities in measured samples. The biggest part of the uncertainty arises from the repeatability of the loading force which reflects a scatter of the sample properties. The influence of the temperature on the uncertainty value is very small</p></abstract>

The flexural mechanical strength was measured at room and elevated temperatures on green ceramic samples made from quartz electroporcelain mixture. An apparatus exploited the three-point-bending mechanical arrangement and a magazine for 10 samples that are favorable at the temperature measurements from 20 °C to 1000 °C. A description of the apparatus from the point of possible sources of uncertainties is also given. The uncertainty analysis taking into account thermal expansion of the sample and span between the supports is performed for 600 °C. Friction between the sample and supports as well as friction between mechanical parts of the apparatus is also considered. The value of the mechanical strength at the temperature of 600 °C is 13.23 ± 0.50 MPa, where the second term is an expanded standard uncertainty. Such an uncertainty is mostly caused by inhomogeneities in measured samples. The biggest part of the uncertainty arises from the repeatability of the loading force which reflects a scatter of the sample properties. The influence of the temperature on the uncertainty value is very small

Measuring the Flexural Strength of Ceramics at Elevated Temperatures – An Uncertainty Analysis

Department of Physics, Faculty of Natural Sciences, Constantine the Philosopher University, A. Hlinku 1,949 74 Nitra, Slovakia

Department of Physics, Faculty of Civil Engineering, Slovak University of Technology, Radlinskeho 11,813 68 Bratislava, Slovakia

Department of Physics, Faculty of Natural Sciences, Constantine the Philosopher University, A. Hlinku 1, 49 74 Nitra, Slovakia

Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University, Thakurova 7, 166 29 Prague, Czech Republic

Measurement Science Review

The flexural mechanical strength was measured at room and elevated temperatures on green ceramic samples made from quartz electroporcelain mixture. An...

Measuring the Flexural Strength of Ceramics at Elevated Temperatures – An Uncertainty Analysis

Published Online: Mar 06, 2014

Page range: 35 - 40

DOI: https://doi.org/10.2478/msr-2014-0006

Keywords
Three-point-bending, flexural strength, uncertainty analysis, influence of temperature

This content is open access.

Measuring the Flexural Strength of Ceramics at Elevated Temperatures – An Uncertainty Analysis

Published Online: Mar 06, 2014

Page range: 35 - 40

DOI: https://doi.org/10.2478/msr-2014-0006

KeywordsThree-point-bending, flexural strength, uncertainty analysis, influence of temperature

This content is open access.

Keywords
Three-point-bending, flexural strength, uncertainty analysis, influence of temperature