This leads to mechanical stresses between the outer and inner parts of the material, since heat can be transferred or dissipated faster on the surface than on the inside. If the resulting stresses exceed a critical value, the material is damaged.
Fields of application thermal shock
in the case of hot components in contact with cold media
(LNG loading, exhaust system when passing through a puddle)
cold components in contact with hot media
cleaning of heat exchangers with cold water
evaporation of water droplets on combustion chambers