TY - GEN
T1 - Effect of sample shape and size on the thermal shock resistance for ultra-high temperature ceramics
AU - Zeng, Tao
AU - Yan, Shi
AU - Gu, Yu
AU - Jiang, Lili
AU - Fang, Daining
AU - Gao, Yu
PY - 2011
Y1 - 2011
N2 - The ceramic thermal shock resistance is usually determined by a strip or a disk sample. However, sample shape and size have greatly effect on determining the strength of Ultra-high temperature ceramics (UHTCs). Study on the thermal shock resistance of UHTCs with different shape and size is very important. Combining mechanics with oxidation dynamic theory, the present work studied the mechanical behavior of UHTCs under high temperature condition, which is different from the traditional thermal shock theory. The parameters, such as thermal expansion coefficient and Young's modulus, are considered as a function of temperature and incorporated into ANSYS code to calculate the stress field of UHTCs under high temperature condition. The effects of sample shape and size on UHTCs stress are discussed. It is found that the thermal shock resistance of UHTCs is strongly affected by the sample shape and size and this is useful for the characterization of UHTCs on mechanical properties.
AB - The ceramic thermal shock resistance is usually determined by a strip or a disk sample. However, sample shape and size have greatly effect on determining the strength of Ultra-high temperature ceramics (UHTCs). Study on the thermal shock resistance of UHTCs with different shape and size is very important. Combining mechanics with oxidation dynamic theory, the present work studied the mechanical behavior of UHTCs under high temperature condition, which is different from the traditional thermal shock theory. The parameters, such as thermal expansion coefficient and Young's modulus, are considered as a function of temperature and incorporated into ANSYS code to calculate the stress field of UHTCs under high temperature condition. The effects of sample shape and size on UHTCs stress are discussed. It is found that the thermal shock resistance of UHTCs is strongly affected by the sample shape and size and this is useful for the characterization of UHTCs on mechanical properties.
KW - Equivalence stress
KW - Thermal shock resistance
KW - UHTCs
UR - https://www.scopus.com/pages/publications/78751476344
U2 - 10.4028/www.scientific.net/AMR.177.223
DO - 10.4028/www.scientific.net/AMR.177.223
M3 - Conference contribution
AN - SCOPUS:78751476344
SN - 9783037850138
T3 - Advanced Materials Research
SP - 223
EP - 225
BT - Testing and Evaluation of Inorganic Materials I
T2 - 1st Annual Meeting on Testing and Evaluation of Inorganic Materials
Y2 - 28 April 2010 through 30 April 2010
ER -