An analytical model to predict interlayer burr size following drilling of CFRP-metallic stack assemblies

Ali Abdelhafeez Hassan, Sein Leung Soo, David K. Aspinwall, Dick Arnold, Anthony Dowson

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A novel analytical model to describe entrance burr formation when drilling ductile metals as a function of tool geometry (point/helix angles, diameter), operating parameters (cutting speed, feed rate) and workpiece material properties, was initially formulated. The model was further developed to account for interlayer burr dimensions when drilling CFRP-metallic stack arrangements. Data from validation trials performed on Ti–6Al–4V, AA7010 and AA2024 workpieces together with their associated CFRP stack assemblies over 4 different combinations of cutting speed and feed rate showed that the predicted sizes of entrance and interlayer burrs were all accurate to within 20% of the experimentally measured results.

Original languageEnglish
Pages (from-to)109-112
Number of pages4
JournalCIRP Annals
Volume69
Issue number1
DOIs
Publication statusPublished - 17 May 2020

Bibliographical note

Publisher Copyright:
© 2020 CIRP

Keywords

  • Burr
  • Drilling
  • Modelling

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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