Empirical modeling of the white layer thickness formed in electrodischarge drilling of beryllium-copper alloys

Y. Yildiz, M. M. Sundaram, K. P. Rajurkar

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

White layer thickness (WLT) formed in electrodischarge drilling (EDD) of beryllium-copper (Be-Cu) alloy and the variation of WLT with respect to drilling depth has been studied in detail by this work. An empirical model relating to EDD process parameters (the working current and pulse on-/off-time) has been developed to predict the WLT at various hole depths. Experimental results were statistically analyzed using analysis of variance (ANOVA) and Tukey's honestly significant difference methods. It was found that the white layer thickness increases with increasing drilling depth as well as the working current and the pulse duration. While the effect of EDD parameters on the variation of the WLT is around 38-39 %, the effect of the hole depth on the variation of the WLT is 17 %. The developed second order mathematical stochastic model for the WLT has an adequate predictive ability.

Original languageEnglish (US)
Pages (from-to)1745-1755
Number of pages11
JournalInternational Journal of Advanced Manufacturing Technology
Volume66
Issue number9-12
DOIs
StatePublished - Jun 2013

Keywords

  • Be-Cu
  • EDD
  • Modeling
  • White layer thickness

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Mechanical Engineering
  • Computer Science Applications
  • Industrial and Manufacturing Engineering

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