The effect of short glass fiber dispersion on the friction and vibration of brake friction materials

Jae Hyun Gweon, Byung Soo Joo, Ho Jang

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Friction and vibration of brake friction materials containing short glass fibers were investigated to examine the effect of fiber dispersion on friction instability. The friction material specimens with chopped or milled glass fibers were prepared and the friction and wear characteristics were measured using a one-fifth-scale brake dynamometer and a Krauss-type tester. The results showed that the milled glass fibers, which were evenly dispersed in the friction material, produced a smoother sliding surface with higher contact stiffness. On the other hand, the chopped glass fibers promoted a rough surface due to the existence of the primary contact plateaus caused by fiber bundles. The friction material with milled glass fibers exhibited a higher coefficient of friction, high wear rate, and larger oscillation amplitudes during stick-slip experiments, which was attributed to the higher static friction due to the smooth surface. The friction materials with milled glass fibers, therefore, can have a higher propensity for friction-induced vibration during brake applications. This is contrary to the conventional assumption, which favors good dispersion of the short fibers within composite materials. This study also indicated that the static coefficient of friction could be more important than the contact stiffness as a trigger for friction-induced vibrations.

Original languageEnglish
Pages (from-to)61-67
Number of pages7
JournalWear
Volume362-363
DOIs
Publication statusPublished - 2016 Sep 15

Fingerprint

Friction materials
brakes
glass fibers
Brakes
Glass fibers
friction
Friction
vibration
Fibers
coefficient of friction
Stiffness
Wear of materials
stiffness
Stick-slip
fiberglass
Dynamometers
dynamometers
static friction
fibers
fiber composites

Keywords

  • Brakes
  • Contact stiffness
  • Friction material
  • Friction mechanism
  • Glass fiber
  • Stick-slip

ASJC Scopus subject areas

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

Cite this

The effect of short glass fiber dispersion on the friction and vibration of brake friction materials. / Gweon, Jae Hyun; Joo, Byung Soo; Jang, Ho.

In: Wear, Vol. 362-363, 15.09.2016, p. 61-67.

Research output: Contribution to journalArticle

@article{02861320f47441d2b01d0b70d6a860fd,
title = "The effect of short glass fiber dispersion on the friction and vibration of brake friction materials",
abstract = "Friction and vibration of brake friction materials containing short glass fibers were investigated to examine the effect of fiber dispersion on friction instability. The friction material specimens with chopped or milled glass fibers were prepared and the friction and wear characteristics were measured using a one-fifth-scale brake dynamometer and a Krauss-type tester. The results showed that the milled glass fibers, which were evenly dispersed in the friction material, produced a smoother sliding surface with higher contact stiffness. On the other hand, the chopped glass fibers promoted a rough surface due to the existence of the primary contact plateaus caused by fiber bundles. The friction material with milled glass fibers exhibited a higher coefficient of friction, high wear rate, and larger oscillation amplitudes during stick-slip experiments, which was attributed to the higher static friction due to the smooth surface. The friction materials with milled glass fibers, therefore, can have a higher propensity for friction-induced vibration during brake applications. This is contrary to the conventional assumption, which favors good dispersion of the short fibers within composite materials. This study also indicated that the static coefficient of friction could be more important than the contact stiffness as a trigger for friction-induced vibrations.",
keywords = "Brakes, Contact stiffness, Friction material, Friction mechanism, Glass fiber, Stick-slip",
author = "Gweon, {Jae Hyun} and Joo, {Byung Soo} and Ho Jang",
year = "2016",
month = "9",
day = "15",
doi = "10.1016/j.wear.2016.05.004",
language = "English",
volume = "362-363",
pages = "61--67",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - The effect of short glass fiber dispersion on the friction and vibration of brake friction materials

AU - Gweon, Jae Hyun

AU - Joo, Byung Soo

AU - Jang, Ho

PY - 2016/9/15

Y1 - 2016/9/15

N2 - Friction and vibration of brake friction materials containing short glass fibers were investigated to examine the effect of fiber dispersion on friction instability. The friction material specimens with chopped or milled glass fibers were prepared and the friction and wear characteristics were measured using a one-fifth-scale brake dynamometer and a Krauss-type tester. The results showed that the milled glass fibers, which were evenly dispersed in the friction material, produced a smoother sliding surface with higher contact stiffness. On the other hand, the chopped glass fibers promoted a rough surface due to the existence of the primary contact plateaus caused by fiber bundles. The friction material with milled glass fibers exhibited a higher coefficient of friction, high wear rate, and larger oscillation amplitudes during stick-slip experiments, which was attributed to the higher static friction due to the smooth surface. The friction materials with milled glass fibers, therefore, can have a higher propensity for friction-induced vibration during brake applications. This is contrary to the conventional assumption, which favors good dispersion of the short fibers within composite materials. This study also indicated that the static coefficient of friction could be more important than the contact stiffness as a trigger for friction-induced vibrations.

AB - Friction and vibration of brake friction materials containing short glass fibers were investigated to examine the effect of fiber dispersion on friction instability. The friction material specimens with chopped or milled glass fibers were prepared and the friction and wear characteristics were measured using a one-fifth-scale brake dynamometer and a Krauss-type tester. The results showed that the milled glass fibers, which were evenly dispersed in the friction material, produced a smoother sliding surface with higher contact stiffness. On the other hand, the chopped glass fibers promoted a rough surface due to the existence of the primary contact plateaus caused by fiber bundles. The friction material with milled glass fibers exhibited a higher coefficient of friction, high wear rate, and larger oscillation amplitudes during stick-slip experiments, which was attributed to the higher static friction due to the smooth surface. The friction materials with milled glass fibers, therefore, can have a higher propensity for friction-induced vibration during brake applications. This is contrary to the conventional assumption, which favors good dispersion of the short fibers within composite materials. This study also indicated that the static coefficient of friction could be more important than the contact stiffness as a trigger for friction-induced vibrations.

KW - Brakes

KW - Contact stiffness

KW - Friction material

KW - Friction mechanism

KW - Glass fiber

KW - Stick-slip

UR - http://www.scopus.com/inward/record.url?scp=84971450964&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84971450964&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2016.05.004

DO - 10.1016/j.wear.2016.05.004

M3 - Article

AN - SCOPUS:84971450964

VL - 362-363

SP - 61

EP - 67

JO - Wear

JF - Wear

SN - 0043-1648

ER -