Simulation and Experimental Analysis of Mechanical Crosstalk in an Ultrasonic Matrix Array

The phenomenon known as mechanical crosstalk from the point of view of its physical nature and the causes of its generation are analyzed. It is also analyzed how it may affect the performance of ultrasonic matrix arrays. This phenomenon occurs primarily in matrix arrays and it is magnified by certain factors causing serious problems in the performance of this type of transducers. This work includes simulations of the mechanical crosstalk phenomenon using the Finite Element Method (FEM), and describes the construction of a 2 x 3 matrix array. The analysis includes the effect of the mechanical crosstalk in the radiation pattern emitted by the ultrasonic array. Keywords— Ultrasound, Matrix array, Mechanical crosstalk, Piezoelectric ceramic, Finite Element Method.