ANALYSIS OF THE TRANSIENT ULTRASONIC FIELDS RADIATED IN SOLIDS BY CIRCULAR AND ANNULAR SOURCES

The transient radiation of ultrasonic fields into isotropic solids by circular and annular sources has been studied. The calculations of the axial and radial components of the particle velocity spatial-temporal distributions were performed using harmonic synthesis approach. The results obtained are explained in terms of direct, compression edge, shear edge, and head waves. The peak value dependences of the different types of waves along the axis and the radius are presented and the explanation of the origin of the edge waves is given. The results obtained may be of particular interest for nondestructive tesing applications.