REFLECTION OF FINITE-AMPLITUDE ULTRASONIC WAVES .2. PROPAGATION

The reflection of a finite amplitude ultrasonic wave from an interface was described by assuming that the Fourier Components in the wave are shifted in phase as though they were independent waves (Part I). In Part II, the behavior of the distorted wave after reflections that produce nonzero component phase shifts is predicted using a computer model. The progress of these “unstable” waves toward the “stable” waveform is described. Experimental results obtained using a pulse technique are in good agreement with the computer results. © 1968, Acoustical Society of America. All rights reserved.