Modelling of the process of the two-beam laser thermosplitting of silicate glasses within the limits of the linear fracture mechanics

Within the limits of the theories of thermoelasticity and linear fracture mechanics finite-element modelling of the laser-induced crack extension in silicate glasses at two-beam laser controllable thermosplitting is executed on the basis of the developed algorithm. It is shown that crack initiation takes place on a surface of material in the zone of a coolant feeding and at its extension in the depth the flaw shape has the characteristic deflection, which is verified by the results of experimental researches.