The Study of Abrasive Water Jet Cutting Front Development using a Two-Dimensional Cellular Automata Model

Jerman, Marko; Valentinčič, Joško; Lebar, Andrej; Orbanić, H.

doi:10.5545/sv-jme.2014.2179

Cited by 11 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kerf taper [2,35,37,61,62] and cutting front curvature (i.e., jet lag) [13,58,180,181,185] have been found to increase with operating conditions that tend to decrease the erosive efficacy.…”

Section: Micro-tomography and Characterization Of The Awj Cut Geometrymentioning

confidence: 99%

Predicting Surface Roughness and Delamination When Abrasive Waterjet Machining Fiber Reinforced Polymer Composites

Schwartzentruber¹

2023

Preprint

View full text Add to dashboard Cite

The machining of composite materials is difficult because of their non-homogenous structure and their constituents commonly possess a high resistance to cutting. Abrasive waterjet machining (AWJM) is more attractive for composite substrates than conventional machining techniques because of its ability to rapidly machine a wide variety of materials with low reactionary forces on the workpiece, and without creating a heat-affected zone. However, AWJM is prone to producing variable surface roughness and delamination. This dissertation aimed to model these surface roughness and delamination mechanisms. The thesis presents 2D and 3D roughness models capable of predicting the surface roughness during abrasive waterjet (AWJ) trimming of composite substrates. The models were able to predict the measured surface roughness with an average error of 10% and 16%, for the 2D and 3D models, respectively. The thesis also presents experimental and numerical results characterizing the delamination when AWJ piercing and cutting a carbon-fiber/epoxy laminate. Fluid-structure interaction (FSI) models created to simulate the piercing process showed that interlaminar delamination was due to the hydraulic shock (‘water hammer’) associated with liquid jet impact. As expected, increased pressure and nozzle size resulted in ply debonding, and was experimentally verified using 3D x-ray micro-tomography. The composite anisotropy was found to produce an asymmetric shock loading along the liquid-solid interface, which contributed to the asymmetric delamination. The FSI model showed that delamination when cutting carbon-fiber/epoxy depended primarily on the normal interlaminar stress, with relatively large damage zones occurring ahead of the cutting front. This trend was also observed in x-ray micro-tomographs of an AWJ cut. The amount of delamination across different process parameters was also measured using a moisture uptake methodology, and showed that increase traverse speed, increased nozzle size, and decreased abrasive flow rate, increased delamination. Prediction and characterization of surface roughness and delamination when AWJM will allow further improvement of cut-surface finish and structural integrity of composite materials, respectively

show abstract

Section: Micro-tomography and Characterization Of The Awj Cut Geometrymentioning

confidence: 99%

Predicting Surface Roughness and Delamination When Abrasive Waterjet Machining Fiber Reinforced Polymer Composites

Schwartzentruber¹

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…For a liquid-solid two-phase flow system, with high velocities (3 m/s or more), thin and medium solid particles are in a completely suspended state [14]. Abrasive (sand) in the fluid is mainly loaded by the viscous force, gravity Q and the resistance T of the rigid wall.…”

Section: Stress Analysis Of Mixed Fluids In a High Pressure Pipelinementioning

confidence: 99%

The Research of Stress Theoretical Analysis and Structural Parameters of Sprayer Fluid of Rotating Conical Abrasive Jet

Li¹,

Ge²,

Zheng³

et al. 2015

IJHT

View full text Add to dashboard Cite

The characteristics of a jet flow are analyzed. A rotating cone water jet is formed by using plus adding a special spiral section on the basis of research at home and abroad. According to the structural characteristics of the spiral groove, combined with the characteristics of the nozzle and requirements, a spin and nozzle structure is designed which has a spiral groove with certain parameters. A rotating conical water jet is thereby obtained. The force is analyzed in a high pressure pipe and fluid while spinning, and these are analyzed for the contraction in the force of the abrasive particles and the force of the fluid leaving the jet nozzle. The movement characteristics of the particles are understood as fluid in the jet formation process, which provides data support for further study for adding abrasive particles. A trajectory equation of the rotating cone water jet is derived based on the characteristics of the fluid movement, focusing on the actual movement of the fluid. The movement characteristics and mechanical properties of the fluid in a nozzle are also analyzed. The influence of nozzle structure parameters on the formation of the jet is obtained through experimental study. This shows that the cross section of the ring or circle diameter D correspondingly decreases with the increase of pitch H, and the inner diameter D essentially remains unchanged. The section shape of the basis is a circle with a center hole with a diameter of 2 mm. The brightness of the section with the hole is inferior to the condition of the one without a hole. The increasing trend of circle diameter D is more than that of the inner diameter D as the nozzle diameter di increases. These are the theoretical and experimental foundations for further optimizing spinning structures.

show abstract

“…However, by selecting proper parameters, the surface quality could be controlled properly. [57]. Figure 6 illustrates the surface zone (smooth zone and striation zone) with the surface roughness profile during the cutting ranging from the top edge (kerf width) towards the bottom edge (kerf width).…”

Section: Surface Roughness R Amentioning

confidence: 99%

State-of-the-Art in Abrasive Water Jet Cutting Technology and the Promise for Micro- and Nano-Machining

Alsoufi¹

2017

IJMEA

View full text Add to dashboard Cite

Abstract:A long time ago, nature proved that even the hardest engineering materials change their shape and form when water is applied to them. The new shape formed by this phenomenon can be both valuable and/or attractive. In modern industry, water cutting technology is divided into two groups. Water jet cutting technology, which is cutting with pure water and abrasive water jet cutting technology, which uses water embedded with fine abrasive particles. Clean water jet cutting technology is suitable for "soft engineering materials" for instance paper, wood, textiles, food and plastic. It is extensively used technology in industries to cut almost everything from frozen chickens to one-use diapers. On the other hand, when "hard engineering materials" need to be cut, the addition of fine abrasive particles such as garnet allows one to cut almost any engineering material whether it be marble (as used in Al-Masjid Al-Haram, The Holy Mosque, in Makkah, KSA) or tool steel, and in thickness up to 200 mm. In this review paper, the primary objective is to highlight the state-of-the-art of the abrasive water jet cutting technology and the promise for micro-and nano-machining in modern industry.

show abstract

The Study of Abrasive Water Jet Cutting Front Development using a Two-Dimensional Cellular Automata Model

Cited by 11 publications

References 28 publications

Predicting Surface Roughness and Delamination When Abrasive Waterjet Machining Fiber Reinforced Polymer Composites

Predicting Surface Roughness and Delamination When Abrasive Waterjet Machining Fiber Reinforced Polymer Composites

The Research of Stress Theoretical Analysis and Structural Parameters of Sprayer Fluid of Rotating Conical Abrasive Jet

State-of-the-Art in Abrasive Water Jet Cutting Technology and the Promise for Micro- and Nano-Machining

Contact Info

Product

Resources

About