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Studies on the Influence of a Counterpart on Fretting Wear of Cold-Rolled High Strength Steel

  • Kyungmok Kim
  • Seung Yub Baek
Regular Paper

Abstract

This article investigates the influence of a counterpart on fretting wear of cold-rolled high strength steel for automotive applications. Fretting wear tests are conducted using a ball-on-flat test apparatus. The friction forces between cold-rolled high strength steel plates and various counterparts are measured. The worn profile of a cold-rolled high strength steel specimen is determined to calculate the wear rate. Experimental results show that the ratio of the maximum tangential to the normal force at a contact surface varies with a counterpart material. Measured worn surface profiles indicate that the cross-sectional area of a wear scar is enlarged as the number of cycles increases. The effects of counterpart hardness and the maximum Hertzian contact pressure are identified on the wear rate of cold-rolled high strength steel. From measurement and analysis results, ZrO2 counterparts are found to be more adequate than the commercial ones for the cold-rolled high strength steel rails.

Keywords

High strength steel Fretting Sliding Wear Friction 

Nomenclature

a

Hertz contact radius

A

the cross-sectional area

ac

measured contact radius

dp

the average wear depth

E

elastic modulus

P

normal force

Po

the maximum contact pressure

Q

tangential force

Qmax

the maximum tangential force

R

radius of a ball

Vw

total wear volume

\({\dot v_w}\)

wear rate

δ

displacement

δac

actual sliding amplitude

δt

total displacement amplitude

ν

Poisson’s ratio

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Copyright information

© Korean Society for Precision Engineering and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Aerospace and Mechanical EngineeringKorea Aerospace UniversityGyeonggi-doRepublic of Korea
  2. 2.Department of Mechanical DesignInduk UniversitySeoulRepublic of Korea

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