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Analysis of the initial damage region in agate plates cut by abrasive waterjet (AWJ) process

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Abstract

The abrasive waterjet (AWJ) cutting process has been widely used in the gemstone processing industry due to its versatility and accuracy characteristics. The influence of the parameters involved in the AWJ process has been investigated by many authors, and it can be seen that in each application different responses are reported. In agate processing via AWJ, the final quality of the piece depends on the properties of the initial damage region (IDR), such as width and depth. The present study has purpose to investigate the influence of the standoff distance, traverse speed, working pressure, and abrasive mass flow rate on the depth and width of the IDR when cutting agates through AWJ. A set of 80 samples were analyzed, and the measurement of the depth and width of the IDR was performed through three-dimensional scanning using X-ray computed microtomography (XCM). This technique allows assessing the IDR in an accurate and reliable way. The results showed that, within the investigated range of parameters, the width and depth of the IDR vary between 0.3 and 0.7 mm. Also, the IDR in the agate plates is strongly influenced by the standoff distance.

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Abbreviations

Abrasive waterjet:

(AWJ)

Initial damage region:

(IDR)

Depth of initial damage region:

(DIDR)

Width of initial damage region:

(WIDR)

Working pressure of the waterjet:

(P)

X-ray computed microtomography:

(XCM)

Traverse speed:

(Vf)

Abrasive mass flow:

(\(\dot {m}_{A}\))

Standoff distance:

(dS)

Analysis of Variance:

(ANOVA)

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Authors and Affiliations

  1. Faculty of Engineering and Architecture - CT Pedras/UPF, University of Passo Fundo, Passo Fundo, Brazil

    Carlos Edmundo de Abreu e Lima Ipar

  2. Postgraduate Mechanical Engineering Program, Federal University of Rio Grande do Sul, Porto Alegre, Brazil

    Patric Daniel Neis & Ney Francisco Ferreira

  3. Mechanical Engineering Department, University of Passo Fundo, Passo Fundo, Brazil

    Germano Lasch

  4. PPGPPF/UPF - CT Pedras/UPF, University of Passo Fundo, Passo Fundo, Brazil

    Thomas Felipe Zibetti

Authors
  1. Carlos Edmundo de Abreu e Lima Ipar
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  2. Patric Daniel Neis
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  3. Ney Francisco Ferreira
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  4. Germano Lasch
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  5. Thomas Felipe Zibetti
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Correspondence to Carlos Edmundo de Abreu e Lima Ipar.

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de Abreu e Lima Ipar, C.E., Neis, P.D., Ferreira, N.F. et al. Analysis of the initial damage region in agate plates cut by abrasive waterjet (AWJ) process. Int J Adv Manuf Technol 109, 2629–2638 (2020). https://doi.org/10.1007/s00170-020-05831-8

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  • DOI: https://doi.org/10.1007/s00170-020-05831-8

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