Enhancing and modelling the abrasive waterjet impact and erosion process

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This project aims to understand and improve the ultrahigh pressure abrasive waterjet (AWJ) impact process. The current AWJ machining technology transfers less than 20% of the jet energy to the workpiece, mainly due to the damping effect of a stagnant layer at the jet impact site. This project attempts to remove this effect using ultrasonic vibration and explore the new impact micromechanics under the coupled effect of particle impact and workpiece vibration. The expected outcome is a new AWJ technology for efficient, multi-scale machining, and to increase industry’s capability in fabricating high-integrity products.