The influence of boundary conditions, linear electrical permeability and permeability are not.That affect the intensity and strength of a crack unit circle in pioneer so dielectric.
Influence of electrical boundary conditions, a permeable and impermeable. Factors affecting the intensity of cracks and stresses in a circular dielectric medium Pioneer Electronics Association.
The influence of boundary conditions of electric permeability and permeability.Affecting the intensity factor and stresses of circular cracks in piezoelectric medium.