Abstract:The abrasive waterjet (AWJ) is now widely used in the advanced cutting processes of polymers, metals, glass, ceramics and composite materials like thin multiple-layered material (TMM). Various research and development efforts have recently been made to understand the science of AWJ. However, the interaction mechanism between a workpiece and high-velocity abrasive particles still remains a complicated problem. In this work, the material removal mechanisms of AWJ such as micro penetration and micro dent were experimentally investigated. In addition, a new computer simulation model considering high strain rate effect was proposed to understand the micro impact behavior of high-velocity micro-sized abrasives in AWJ cutting.

Key words: abrasive waterjet; thin multiple layered materials; micro-sized abrasive; micro penetration; micro dent