Optimization of abrasive waterjet process parameters for thick material cutting in order to reduce jet lag effect

Zun Kurnain, Qurratul Ainaa (2024) Optimization of abrasive waterjet process parameters for thick material cutting in order to reduce jet lag effect. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

This abstract discusses research into the causes of cutting delays while working with thick metal. The Taguchi method's orthogonal matrix can be used to optimize these variables and get the optimum jet lag angle for a given metal surface. The versatility and efficacy of abrasive waterjet cutting as a metal-cutting technique are emphasized. However, the quality of the cut is compromised when thick metals are being cut because the kinetic energy distribution of the abrasive waterjet might cause jet lag or striation lines on the surface. Predictive modelling is provided as a potentially useful approach to comprehending and mitigating jet lag effects through real-time adjustments to cutting parameters and path optimization. The purpose of this research is to examine the variables that affect the cutting of thick aluminium blocks on the Mach 2 machine flow at UTeM. This study will examine how changing milling techniques and parameters on aluminium blocks might improve surface quality and cut down on travel time. The abrasive material will be 80-mesh garnet sand, and the study's goal is to determine the best possible combination of these factors to mitigate the effects of jet lag on thick-material cutting. There are three variables that will be examined and analyzed water pressure, transverse feed rate, and standoff distance. The research uses MINITAB software and the Taguchi method to find the best strategy for improving surface quality and taper angle, and to capture data from actual samples. The angle of jetlag and surface roughness will also be evaluated with the use of a Mitutoyo portable surface roughness tester machine and a microscope Nikon SMZ 745T. The results of this research should shed light on how to optimize parameters to efficiently cut large metals while maintaining desirable surface quality and jet lag angle.

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