Control of thermal stress intensity factor in a piezothermoelastic semi-infinite body with an edge crack

We aim at the solution to evaluate a surface-breaking crack in a piezothermoelastic body due to sudden thermal load. An analytical model is a two-dimensional piezothermoelastic semi-infinite body with an edge crack subjected to a sudden temperature change unavoidably and the electric displacement to compensate its effect. The transient field is obtained by a potential method and the Laplace transform. The problem is reduced to a problem of a singular integral equation, from which the stress intensity factor of the crack is obtained. Using numerical examples, the control of the stress intensity factor by applying electric displacement is suggested.