The Effect of Abrasive Water Jet Process Variables on Surface and Subsurface Condition of Inconel 718

Gustavo A. Escobar-Palafox, Rosemary S. Gault, Keith Ridgway

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Experiments were carried out in Inconel 718 in order to investigate the effect of abrasive water-jet process variables on surface and subsurface condition. A Design of Experiments (DoE) approach was taken, considering variables such as water pressure, traverse rate, abrasive mass flow rate and abrasive grit size. The experimental variables were related to taper ratio, surface roughness of different zones in the machined surface and subsurface condition (deformation and crater depth).Statistical analysis was carried out in order to develop mathematical models which include process variable interactions and quadratic terms. This led to models with high correlation and prediction power which allow a better understanding of the process and can form the base for further process optimisation. The models were validated with additional experiments and showed good agreement with the water jet system. The results showed that water pressure has a nonlinear behaviour in the quality of the surface and sub-surfaces and that interaction between the variables had a significant effect on the quality of the surfaces and sub-surfaces generated by the AWJ.
Original languageEnglish
Title of host publicationAdvances in Abrasive Technology XV
EditorsY. F. Zhang, D. L. Butler, J. Wang, X. P. Li, A. Yui, L. Zhou
Pages351-356
Number of pages6
Volume565
DOIs
Publication statusPublished - 28 Sep 2012
Event15th International Symposium on Advances in Abrasive Technology, ISAAT 2012 - , Singapore
Duration: 25 Sep 201228 Sep 2012

Publication series

NameAdvanced Materials Research
PublisherTrans Tech Publications Ltd
Volume565
ISSN (Print)1662-8985

Conference

Conference15th International Symposium on Advances in Abrasive Technology, ISAAT 2012
Abbreviated titleISAAT 2012
CountrySingapore
Period25/09/1228/09/12

Keywords

  • abrasive water jet machining
  • inconel 718
  • surface quality
  • abrasive mass flow rate
  • abrasive water-jet
  • correlation and prediction
  • crater depth
  • grit size
  • inconel-718
  • machined surface
  • nonlinear behaviours
  • process optimisation
  • process variables
  • sub-surfaces
  • subsurface conditions
  • taper ratios
  • traverse rate
  • water jet system
  • water pressures
  • design of experiments
  • experiments
  • jets
  • mathematical models
  • surface properties
  • surface roughness
  • abrasives

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  • Cite this

    Escobar-Palafox, G. A., Gault, R. S., & Ridgway, K. (2012). The Effect of Abrasive Water Jet Process Variables on Surface and Subsurface Condition of Inconel 718. In Y. F. Zhang, D. L. Butler, J. Wang, X. P. Li, A. Yui, & L. Zhou (Eds.), Advances in Abrasive Technology XV (Vol. 565, pp. 351-356). (Advanced Materials Research; Vol. 565). https://doi.org/10.4028/www.scientific.net/AMR.565.351