The investigation is carried out by means of factorial studies, in which the jet is fired at various water pressures and abrasive feed rates, providing different kinetic powers. The aim of this contribution is to monitor the airborne acoustic emission of an abrasive waterjet cutting head and investigate its correlation with the jet kinetic power. Besides, the current state of the art does not provide means for its in-line monitoring. This variable is subject to relevant fluctuations versus time. Amongst those, the jet kinetic power defines the cutting capability and has a significant impact on the final cut features. Product quality requirements are pushing towards an improvement of tracking and stabilization methods of the relevant process variables. Abrasive waterjet cutting is a manufacturing technology making use of a high-speed waterjet with abrasive particles in suspension, for cutting materials with different mechanical properties.
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