A novel dynamic friction experiment using a modified Kolsky bar apparatus

H. D. Espinosa*, A. Patanella, M. Fischer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

A novel dynamic friction experiment using the Kolsky bar concept was developed. The technique is complementary to the plate impact and other macroscopic friction experiments in the sense that sliding velocities and pressures not attainable otherwise can be investigated. The experimental results reported in this article show that the technique provides accurate and repeatable measurement of time-resolved friction. The apparatus is simpler and easier to operate than the plate impact facility. However, it cannot achieve the same level of contact pressure. Several material pairs have been investigated. In particular, the kinetic friction coefficient of Ti-6Al-4V sliding against WC/Co (cermet) and 4340 steel sliding against WC/Co were measured and compared with the values reported by Prakash and Clifton in 1993. Atomic force microscopy is used to characterize the surface topography before and after the friction tests.

Original languageEnglish (US)
Pages (from-to)138-153
Number of pages16
JournalExperimental Mechanics
Volume40
Issue number2
DOIs
StatePublished - Jun 2000

Keywords

  • Dynamic friction
  • Kolsky bar
  • Manufacturing
  • Wear

ASJC Scopus subject areas

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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