Effect of Columbic Force on Piezoelectric Fracture
This paper studies the effect of the Columbic force on piezoelectric fracture. Bound charges emerge on the upper and lower surfaces of a permeable crack when a piezoelectric solid with the crack is subjected to far-field mechanical/electric loading. Taking into account the Columbic force between the bound charges, we obtain a non-linear equation governing the normal component of electric displacement D2(x1)on the crack faces. The results show that D2(x1)is, in general, not a constant along the crack faces and depends on the mechanical/electric loading conditions, the crack profile and the material properties outside and inside the crack. Furthermore, we examine the Columbic force under low mechanical/electric loads and then discuss the effect of the Columbic force on the fracture behaviour of piezoelectric materials.
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
C. F. Gao et al., "Effect of Columbic Force on Piezoelectric Fracture", Key Engineering Materials, Vols. 261-263, pp. 81-86, 2004