Critical Biot's number for Determination of the Sensitivity of Spherical Ceramics to Thermal Shock


Autoria(s): Liu QN; 孟松鹤; 蒋持平; 宋凡
Data(s)

2010

Resumo

A critical Biot number, which determines both the sensitivity of spherical ceramics to quenching and the durations of the temperature-wave propagation and the thermal stresses in the ceramics subjected to thermal shock, is theoretically obtained. The results prove that once the Biot number of a ceramic sphere is greater than the critical number, its thermal shock failure will be such a rapid process that the failure only occurs in the initial regime of heat conduction, whereas the thermal shock failure of the ceramic sphere is uncertain in the course of heat conduction. The presented results provide a guide to the selection of the ceramics applied in the thermostructural engineering with thermal shock.

National Natural Science Foundations of China [90716004]

Identificador

http://dspace.imech.ac.cn/handle/311007/43485

http://www.irgrid.ac.cn/handle/1471x/124449

Idioma(s)

英语

Fonte

CHINESE PHYSICS LETTERS.2010,27(8):88104

Tipo

期刊论文