Size effects of brake pads on stick-slip phenomena

Jinsoo Choi, Hyungjo Seo, Seok Su Sohn, Ho Jang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Stick-slip phenomena at a low-velocity range are investigated to study the effect of brake pad size on friction instability, focusing on the contact plateaus on the pad. The friction test is performed using commercial brake pads in three different sizes. The results show that smaller pads produce higher stick-slip amplitudes within narrower velocity ranges. Friction levels are influenced by the total contact plateau area, whereas the stick-slip amplitude was affected by the size of high-pressure plateaus. The pronounced stick-slip with small pads is attributed to the large high-pressure plateaus that increase the static friction further with stick time, indicating that a smaller brake assembly could lead to a high propensity of friction-induced noise and vibrations.

Original languageEnglish
Article number108944
JournalTribology International
Publication statusPublished - 2023 Nov

Bibliographical note

Funding Information:
This work was supported by the Technology Innovation Program (Grant number: 20003598 , Development of the high-performance brake for passenger car and commercial vehicle to reduce particulate matters) funded by the Ministry of Trade, Industry & Energy (MOTIE, South Korea) .

Publisher Copyright:
© 2023 Elsevier Ltd


  • Brake pads
  • Contact plateaus
  • Friction instability
  • Stick-slip

ASJC Scopus subject areas

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


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