Research Initiation: Fundamental Study of Abrasive Water Jet Cutting

研究启动：磨料水射流切割基础研究

• 批准号: 8810639
• 负责人: Ernest Geskin
• 金额: --
• 依托单位: New Jersey Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-09-01 至 1991-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8810639&HistoricalAwards=false
• 关键词: Research; Initiation; Fundamental; Study; Abrasive

This project deals with both experimental and analytical investigations of the abrasive waterjet cutting of materials. The advent of new and more difficult-to-manufacture materials lead to the development of many advanced manufacturing techniques, the so- called non-traditional machine processes, of which abrasive waterjet is one. Mathematical models will be developed using the equations of motion for the waterjet, and the abrasive particles, as well as the energy balance in the impingement zone. Non-dimensional numbers characterizing the process will be determined and used to develop regression equations relating process variables. Experimental studies will be carried out to validate selected equations and evaluate the coefficients. The experiments will involve piercing and cutting plexiglass plates, monitoring process variables and estimating cutting performance. The measured variables include velocities of the water jet and abrasive particles, distribution of forces at the jet/solid interface and rate of motion of this interface. The Laser anemometry, Mach lines technique, high speed photography will be used to measure velocity. High speed filming will also be used to study the kinetics of surface formation. The topography of surfaces will be studied by constructing (cutting slit or notch) replicas and optical and electron microscopy of the surfaces. The procedure will enable generating data for optimization and development of abrasive waterjet cutting.

本项目涉及磨料水射流切割材料的实验和分析研究。新的、更难制造的材料的出现导致了许多先进制造技术的发展，即所谓的非传统机械工艺，磨料水射流就是其中之一。将利用水射流和磨料颗粒的运动方程以及撞击区的能量平衡建立数学模型。将确定表征该过程的无量纲数，并将其用于建立与过程变量相关的回归方程。将进行实验研究，以验证选定的方程并评估系数。这些实验将涉及穿孔和切割有机玻璃板材、监控工艺变量和评估切割性能。测量的变量包括水射流和磨料颗粒的速度、射流/固体界面上的力分布以及该界面的运动速度。将使用激光风速仪、马赫线技术、高速摄影技术来测量速度。还将使用高速成膜来研究表面形成的动力学。将通过构建(切割缝隙或缺口)复制品以及表面的光学和电子显微镜来研究表面的形貌。该程序将能够为磨料水射流切割的优化和开发生成数据。