Abrasive-waterjet (AWJ) studies

摘要

Selected studies on abrasive-waterjets (AWJS) are presented that have been conducted over the past 25 years but have not been reported previously. First, the effects of water compressibility and the factors that affect waterjet orifice coefficients and waterjet coherency are discussed. The first attempts to make an AWJ and the lessons learned from that effort are then presented. Observations on slurry jet formation and techniques are discussed to highlight some of the areas that need further attention and development. The jet pump characteristics of AWJ nozzles are addressed experimentally and theoretically. Results on measuring the abrasive particle velocity and abrasive distribution in an AWJ are presented. Abrasive fragmentation studies under different jet conditions are discussed that reveal the importance of alignment and shed light on nozzle wear mechanisms. Studies are presented that involve visualization of the mixing process, identifying an important phenomenon that affects orifice life. Several methods are presented for manipulating the pressure field in the mixing chamber. Finally, studies are discussed that were conducted to identify the requirements of next-generation manipulator systems by analyzing the error sources from both the kinematics of the system and the AWJ process.