A method of determining the piezoelectric modulus of a nonuniformly polarized rod

A method is proposed for determination of the depolarization function of a rod of piezoelectric ceramics for a specified amplitude-frequency characteristic of the current. The problem is reduced to a nonlinear integral equation solved by means of a combination of Tikhonov’s linearization and regularization methods. The uniqueness of the solution is shown and a series of numerical experiments is carried out with the aim to determine the polarization law.