Liquid-surface relief: Its transient behaviour for pulse-excited transducers

The investigation of ultrasonically produced liquid-surface relief by means of double-exposure holography to determine the sound intensity has been extended to pulsed ultrasonic waves and the transient behaviour of the surface relief. The rise time and height of the surface elevation varies considerably with pulse duration, sound field structure, and sound pressure amplitude. For pulse repetition frequencies higher than 200 Hz a steady-state condition is achieved.