Novel S-N curve for different hardened layers in point and line contact

A. Trausmuth, F. Grün

Research output: Contribution to journalArticleResearchpeer-review


Rolling contact fatigue (RCF) regularly causes mechanical components to fail under cyclic loads. Popular surface treatment processes such as case hardening (carburization), nitriding and tempered martensitic reduce the effect of RCF damage. This paper presents multi-stage S-N curve for steels with different surface treatments, under point and line contact conditions using RCF tribometers for the experiments and finite element (FEM) simulation to simulate localised stresses in the contacts. Additionally, S-N tests with 0, 5 and 11% slide to roll ratio (SRR) are presented. This work demonstrates the importance of testing key points at RCF S-N curves to optimize the hardened layers.
Original languageEnglish
Article number106439
Number of pages16
JournalInternational Journal of Fatigue
Issue numberDecember
Early online date21 Aug 2021
Publication statusPublished - Dec 2021

Bibliographical note

Publisher Copyright: © 2021 Elsevier Ltd


  • Contact stress
  • RCF
  • S-N curve
  • Slide to roll ratio, point contact, line contact

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