Describe thermal shock in glass Why does it occur and how ca

Describe thermal shock in glass. Why does it occur and how can it be avoided?

Solution

During a thermal shock, a transient temperature
gradient occurs, inducing thermal stresses. The shock
intensity is related to the level of temperature differen-
ce between the initial temperature and that of the
environment. There is a distinction between a cold-hot
and a hot-cold thermal shock test. This later is more
harmful for brittle materials because it generates tensile
stresses on the rapidly cooled surface. These stresses
may be sufficient to activate pre-existing micro-cracks
and lead to materials damage or fracture.

There are three key characteristics that determine a material\'s potential to thermal shocshock

If you\'ve ever had a piece of work break in the kiln then you might have been the victim of thermal shock.

By using boro silicate type material to avoid thermal shock in glass