Dimension limit for thermal shock failure

Abstract

We analytically present the characteristic dimensional limit below which the thermal shock failure of ceramics never occurs. This limit, together with the critical temperature difference, separates the state space of the ceramics under thermal shock into two parts – the cracked and the uncracked. Based on the water-quench tests of ceramics, we experimentally proved that when the states of ceramics are in the uncracked region, the ceramics do not produce any cracks during thermal shock. The results provide a guide to prevent thermal shock failure in ceramic.

Keywords:

• thermomechanical
• ceramics
• fracture
• thermal shock

Funding

This work is supported by the National Natural Science Foundation of China [grant number 11102208], [grant number 11232013], [grant number 11021262], and [grant number 11023001].