TY - JOUR
T1 - A methodology for the accurate measurement of uniaxial compressive creep of refractory ceramics
AU - Longhin, Marco E.
AU - Shelleman, David L.
AU - Hellmann, Jr., John Richard
PY - 2017/12/1
Y1 - 2017/12/1
N2 - The uniaxial compressive creep experiment allows identification of which mechanism controls creep and to predict material lifetime under high temperature and low stress service conditions. Firstly, we detail a measurement apparatus developed in our laboratory to measure compressive creep for metals and ceramics, focusing on some important features to produce reliable measurements. Then we describe a protocol to analyze data in order to limit misinterpretation. Multi-stress and multi-temperature tests, particularly useful to determine stress exponent and activation energy, are described highlighting their advantages compared to single-dwell tests. Results obtained from a zircon-based ceramic refractory are used to discuss experimental uncertainties, accuracy and precision associated with creep rate, and creep parameters. Some consideration to decide testing conditions and parameters for different ceramic and metallic materials are also summarized.
AB - The uniaxial compressive creep experiment allows identification of which mechanism controls creep and to predict material lifetime under high temperature and low stress service conditions. Firstly, we detail a measurement apparatus developed in our laboratory to measure compressive creep for metals and ceramics, focusing on some important features to produce reliable measurements. Then we describe a protocol to analyze data in order to limit misinterpretation. Multi-stress and multi-temperature tests, particularly useful to determine stress exponent and activation energy, are described highlighting their advantages compared to single-dwell tests. Results obtained from a zircon-based ceramic refractory are used to discuss experimental uncertainties, accuracy and precision associated with creep rate, and creep parameters. Some consideration to decide testing conditions and parameters for different ceramic and metallic materials are also summarized.
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U2 - 10.1016/j.measurement.2017.07.016
DO - 10.1016/j.measurement.2017.07.016
M3 - Article
AN - SCOPUS:85025095641
SN - 0263-2241
VL - 111
SP - 69
EP - 83
JO - Measurement: Journal of the International Measurement Confederation
JF - Measurement: Journal of the International Measurement Confederation
ER -