Morgun I. Radiation and reception of acoustic impulses spherical piezoceramical converters.

Dissertational work is devoted development of mathematical models which describe process of radiation and reception of acoustic impulses spherical piezoceramical converters. Within the limits of the linear theory of the electroelastic radially polarized environments the three-dimensional dynamic equations of movement spherical piezoceramical environments for the first time are received, mathematical models are developed and methods of their decision for self modes (single and with shield) spherical converters are given at radiation or reception of acoustic impulses by them. Mathematical models are developed and methods of their decision for many modes spherical converters are given at radiation of acoustic impulses by them, and also for self modes spherical converters at radiation of acoustic impulses of a demanded structure by them (an inverse problem).Are carried out numerical researches and laws of dependence of acoustic fields from parameters of considered systems, their acoustic properties and parameters of exciting acoustic or electric signals are established.