Cross-coupling in a 1-3 piezoelectric composite: simulation and experiment

Many works have been devoted to the estimation of crosstalk effects in one-dimensional ultrasound probes. The main aspect limiting the interest of these works concerns the lack of control of the electrical boundary conditions applied to the array which may dramatically affect the results of crosstalk measurements. In this paper the concept of mutual admittances is recalled. Computations based on a periodic finite-element analysis are performed, jointly on measurements of crosstalk in the case of a 1-3 connectivity piezoelectric composite. Quantitative comparisons show the capability of the proposed approach to predict almost all the contributions experimentally observed in a large frequency range.