Modelling of Abrasive Waterjet Machining: A New Approach

EITobgy, M.; Ng, E. G.; Elbestawi, M.A.

doi:10.1016/s0007-8506(07)60104-8

Cited by 27 publications

(14 citation statements)

References 13 publications

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“…In the AWJ system, the abrasive particles enter the water flow through the abrasive filling system and are accelerated along the high-pressure pipeline due to the momentum transferred from the water flow. The particle velocity at the outlet of nozzle is a function of water pressure p, abrasive mass flowrate m a , and water mass flowrate m w [18,19] …”

Section: First-pass Cutting Depthmentioning

confidence: 99%

Determination of rotary cutting depth on steel pipes with the abrasive water jet technique

Wang

Yang

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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Abrasive water jet (AWJ) cutting is a green machining and processing technology that has found extensive applications. In this study, a well-designed cutting tool with multiple AWJ nozzles has been developed to determine the rotary multi-pass cutting depth on steel pipes that are used in petroleum industries. Experimentally, the multi-pass AWJ cutting depth is found to increase with pump pressure, nozzle diameter, and number of nozzles, but decrease with standoff distance. Also, the multi-pass cutting depth initially increases with rotation speed of the AWJ cutting tool or volumetric concentration of abrasive, and then begins to decline when rotation speed or volumetric concentration reaches a certain value. Mathematically, an empirical model is formulated to determine the rotary cutting depth initiated by multiple cutting passes based on the energy conservation theory. There exists a good agreement between the experimentally measured and theoretically calculated cutting depths with a percentage average absolute deviation of 7.0 per cent.

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Section: First-pass Cutting Depthmentioning

confidence: 99%

Determination of rotary cutting depth on steel pipes with the abrasive water jet technique

Wang

Yang

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…In addition to the materials having superior properties, the machining quality can also be extended for the applications involving tight tolerances. This is in contrast to the machining techniques employed traditionally, wherein the hardness of the tool material is always higher than that of the work material [6]. The unconventional machining methods are contactless processes, which utilize the different sources and forms of energy for material removal.…”

Section: Introductionmentioning

confidence: 96%

“…The other notable benefits includethin kerf width, negligible heat affected zone, and flexibility during material removal [2]. Various classes of abrasives are usually applied during AWJ machining like garnet, olivine, aluminum oxide ( ), silica-sand, glass bead, silicon carbide(SiC), zirconium, etc [3,4]. There are several advantages of abrasive water jet machining process such as no thermal alterations; flexibility in machining, larger applicability besides very small cutting forces.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Abrasive Water Jet Machining Process

Puthumana

Aswathy

2015

IJMECH

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This paper presents the modeling of abrasive water jet cutting and development of analytical expressions for material removal rate during abrasive water jet machining process. Water jet machining employs the principle of increasing the pressure of water and to subsequently discharge the water through an orifice. Normally, the diameter of the orifice varies from 0.8 to 1 m. The water jet impinging on the chosen work surface generates sufficient force to cut the work material.Considering theoptimization of the process, few factors appearsto be influential.They are: velocity of the water jet, diameter of the nozzle and the average pressure of the jet.Furthermore, in the modeling, the explanation for higher width of kerf at the top than that of bottom is obtained.In this regard, the flow rate equation of water is determined. By using the expression for flow rate, the power equation for water jetis developed. With regard to material removal rate, a linear relationship with power of the water jet is evident. Additionally, the characteristics of kerf formed during cutting based on energy loss during cutting process using the relation between material removal rate and power of the water jetis assessed.

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“…Fukunishi et al [2] and [3] have developed a numerical model based on multiple jet impacts and Bitter's erosion theory [4] and [5]. A similar approach was used by Vikram and Babu [6] and El Tobgy et al [7] who used a different material erosion model. Yong and Kovacevic [8] used a numerical method of memory cells to record the depth achieved by erosion of each abrasive grain.…”

Section: Introductionmentioning

confidence: 99%

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

Jerman¹,

Valentinčič²,

Lebar³

et al. 2015

SV-JME

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In this paper, the cutting front development during abrasive water jet (AWJ) cutting is studied using a two-dimensional cellular automata (CA) model, hence the striation formation phenomenon is studied indirectly. To calculate the shape of the cutting front, the CA model uses the following inputs: cutting velocity, AWJ intensity and material type. The cutting process is described by simplified material removal and AWJ propagation models in the form of CA rules. The rules encompass AWJ ability to erode the workpiece material and, inversely, the workpiece material's resistance to the erosion process. The proposed CA model is validated by checking the trend of the cutting front development at various input parameters. The simulation results are in good agreement with experimentally obtained trends and thus confirm the proper setup of CA rules. This gives a better insight into the AWJ cutting mechanism.

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Modelling of Abrasive Waterjet Machining: A New Approach

Cited by 27 publications

References 13 publications

Determination of rotary cutting depth on steel pipes with the abrasive water jet technique

Determination of rotary cutting depth on steel pipes with the abrasive water jet technique

Modeling of Abrasive Water Jet Machining Process

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

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