Ultrasound transducers for acoustic imaging are now standard tools for medical diagnostics
and nondestructive control. Technological developments in this field during tens of years
have resulted in the production of very sensitive acoustic probes providing accurate
measurements for a wide range of applications. Such technical improvements are also due
to a strong effort in the modeling of the dynamical behavior of these transducers. One of the
most popular models devoted to piezoelectric vibrators was proposed by Mason1 in the …