INVESTIGATION OF ACOUSTIC CAVITATION THRESHOLDS BY OBSERVATION OF FIRST SUBHARMONIC

The onset of acoustic cavitation has been studied using the first peak of subharmonic generation as an indicator of cavitation onset in the liquid. The findings are discussed in terms of the most satisfactory explanation of this subharmonic generation. The results of altering certain parameters of the liquid such as surface tension, viscosity, gas content and nucleation on subharmonic peak formation are given and commented on. © 1968.