Machining stability in turning operation when cutting with a progressively worn tool insert

M. S. Fofana, K. C. Ee, I. S. Jawahir

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Our investigation is aimed at understanding the influence of the interactions between chatter instability and tool-wear/tool-life in turning operations. An integrated experimental and analytical study has been conducted to examine changes in tool-wear with chatter instability for different cutting conditions and progressively worn cutting tools. The major tool-wear/tool-life parameters for typical grooved tools and the corresponding cutting forces in three directions are measured at varying time intervals. The variations in the wear parameters and the cutting forces are compared with the changes in stability charts of the turning operation. Explicit analytical expressions are derived for predicting the onset of chatter instability and tool-wear.

Original languageEnglish
Pages (from-to)1395-1403
Number of pages9
Issue number7-12
StatePublished - 2003

Bibliographical note

Funding Information:
This work was supported by the Center for Robotic and Manufacturing Systems (CRMS) through the recommendation of Professor Jawahir, University of Kentucky, for which the author from WPI is extremely thankful. The cheerful interactions between the WPI author and the staff and faculty members of the CRMS made every moment of his visit a pleasant experience. Furthermore, we would like to acknowledge the assistant provided by Richard Anderson during our experimental measurements.


  • Chatter instability
  • Stability charts
  • Tool-wear

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry


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