The Boundary Integral Equations (BIE) of the linear and colinear crack problems in two dimensional piezoelectric medium are derived by using integration method with the BIE of the three dimensional problems.

• 根据三维无限大压电体中平片裂纹的不连续电势及不连续位移边界积分方程，利用积分降维技巧，统一导出了二维压电介质中的直线裂纹（或共线裂纹群）的边界积分方程。