A new shock pressure waveform to amplify transient cavitation effect

In this work, the authors intend to study the influence of the temporal form of a pressure pulse waveform on the destructive effects of transient cavitation. Two different shock pressure-time waveforms with nearly the same acoustic energy content were used. The first pressure waveform starts with a tensile wave followed by a compressive one, and the second pressure waveform starts with a compressive wave followed by a tensile one. Based on the measurements presented in this work, the authors can state that the first time-waveform amplifies systematically the cavitation effect. This conclusion was achieved from 3 different experiments, i.e. cavitation bubble collapse time, disintegration efficacy of plaster balls (a kidney stone-mimicking material), and macroscopic study of lesions in Agar-Agar gel.