Tribological properties and electrical signal transmission of copper-graphite composites

Keun Hyung Cho, Ui Seok Hong, Kang Sun Lee, Ho Jang

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The correlation between tribological properties of resin bonded copper-graphite composites and electrical signal transmission is investigated. Particular attention is given to the loss of electrical signal at the sliding interface and the amount of signal noise as a function of the composition in the composite. A custom designed slip-ring type tribotester with a copper ring has been used for this study. Results show that the tribological properties of the sliding couple, that is closely associated with morphology of sliding surfaces and the presence of transfer films, determine the amount of voltage drop at the interface and electrical signal noise. The change of the applied load during sliding experiment changes the coefficient of friction (COF) and energy loss at the sliding interface, suggesting that the effective contact area at the rubbing surface of the composite strongly affects the amount of voltage drop. It is also found that the electrical signal noise is directly related with the fluctuation of the friction coefficient caused by the variation of contacts at the sliding interface and by the transient patches of transfer films on the surface of the ring.

Original languageEnglish
Pages (from-to)301-306
Number of pages6
JournalTribology Letters
Volume27
Issue number3
DOIs
Publication statusPublished - 2007 Sep 1

Fingerprint

signal transmission
Graphite
sliding
Copper
graphite
copper
composite materials
Composite materials
Friction
coefficient of friction
rings
Energy dissipation
Resins
electric potential
Chemical analysis
resins
slip
energy dissipation
Experiments
Voltage drop

Keywords

  • Composites
  • Electrical signal
  • Friction characteristics
  • Real contact area
  • Slip-ring

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Tribological properties and electrical signal transmission of copper-graphite composites. / Cho, Keun Hyung; Hong, Ui Seok; Lee, Kang Sun; Jang, Ho.

In: Tribology Letters, Vol. 27, No. 3, 01.09.2007, p. 301-306.

Research output: Contribution to journalArticle

Cho, Keun Hyung ; Hong, Ui Seok ; Lee, Kang Sun ; Jang, Ho. / Tribological properties and electrical signal transmission of copper-graphite composites. In: Tribology Letters. 2007 ; Vol. 27, No. 3. pp. 301-306.
@article{85f505dd2a48430e9873b22cbcf5bd0a,
title = "Tribological properties and electrical signal transmission of copper-graphite composites",
abstract = "The correlation between tribological properties of resin bonded copper-graphite composites and electrical signal transmission is investigated. Particular attention is given to the loss of electrical signal at the sliding interface and the amount of signal noise as a function of the composition in the composite. A custom designed slip-ring type tribotester with a copper ring has been used for this study. Results show that the tribological properties of the sliding couple, that is closely associated with morphology of sliding surfaces and the presence of transfer films, determine the amount of voltage drop at the interface and electrical signal noise. The change of the applied load during sliding experiment changes the coefficient of friction (COF) and energy loss at the sliding interface, suggesting that the effective contact area at the rubbing surface of the composite strongly affects the amount of voltage drop. It is also found that the electrical signal noise is directly related with the fluctuation of the friction coefficient caused by the variation of contacts at the sliding interface and by the transient patches of transfer films on the surface of the ring.",
keywords = "Composites, Electrical signal, Friction characteristics, Real contact area, Slip-ring",
author = "Cho, {Keun Hyung} and Hong, {Ui Seok} and Lee, {Kang Sun} and Ho Jang",
year = "2007",
month = "9",
day = "1",
doi = "10.1007/s11249-007-9234-9",
language = "English",
volume = "27",
pages = "301--306",
journal = "Tribology Letters",
issn = "1023-8883",
publisher = "Springer New York",
number = "3",

}

TY - JOUR

T1 - Tribological properties and electrical signal transmission of copper-graphite composites

AU - Cho, Keun Hyung

AU - Hong, Ui Seok

AU - Lee, Kang Sun

AU - Jang, Ho

PY - 2007/9/1

Y1 - 2007/9/1

N2 - The correlation between tribological properties of resin bonded copper-graphite composites and electrical signal transmission is investigated. Particular attention is given to the loss of electrical signal at the sliding interface and the amount of signal noise as a function of the composition in the composite. A custom designed slip-ring type tribotester with a copper ring has been used for this study. Results show that the tribological properties of the sliding couple, that is closely associated with morphology of sliding surfaces and the presence of transfer films, determine the amount of voltage drop at the interface and electrical signal noise. The change of the applied load during sliding experiment changes the coefficient of friction (COF) and energy loss at the sliding interface, suggesting that the effective contact area at the rubbing surface of the composite strongly affects the amount of voltage drop. It is also found that the electrical signal noise is directly related with the fluctuation of the friction coefficient caused by the variation of contacts at the sliding interface and by the transient patches of transfer films on the surface of the ring.

AB - The correlation between tribological properties of resin bonded copper-graphite composites and electrical signal transmission is investigated. Particular attention is given to the loss of electrical signal at the sliding interface and the amount of signal noise as a function of the composition in the composite. A custom designed slip-ring type tribotester with a copper ring has been used for this study. Results show that the tribological properties of the sliding couple, that is closely associated with morphology of sliding surfaces and the presence of transfer films, determine the amount of voltage drop at the interface and electrical signal noise. The change of the applied load during sliding experiment changes the coefficient of friction (COF) and energy loss at the sliding interface, suggesting that the effective contact area at the rubbing surface of the composite strongly affects the amount of voltage drop. It is also found that the electrical signal noise is directly related with the fluctuation of the friction coefficient caused by the variation of contacts at the sliding interface and by the transient patches of transfer films on the surface of the ring.

KW - Composites

KW - Electrical signal

KW - Friction characteristics

KW - Real contact area

KW - Slip-ring

UR - http://www.scopus.com/inward/record.url?scp=34547175138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547175138&partnerID=8YFLogxK

U2 - 10.1007/s11249-007-9234-9

DO - 10.1007/s11249-007-9234-9

M3 - Article

AN - SCOPUS:34547175138

VL - 27

SP - 301

EP - 306

JO - Tribology Letters

JF - Tribology Letters

SN - 1023-8883

IS - 3

ER -