Effect of load stress ratio on nominal and effective notch fatigue strength assessment of HFMI-treated high-strength steel cover plates

Martin Leitner, Michael Stoschka

Publikation: Beitrag in einer FachzeitschriftArtikel

Abstract

The International Institute of Welding published IIW-recommendations for the HFMI-treatment, which covers fatigue assessment procedures and quality assurances guidelines. This paper contributes to the validation of the detrimental effect of high R-ratios on HFMI-treated cover plate specimens made of high-strength steel S700. Applying the nominal stress approach, the recommended S/N-curves agree well to the experiments in both cases, R = 0.1 and R = 0.5. In case of the effective notch stress approach, only for R = 0.1 a sound agreement is observed, whereas for R = 0.5 a more pronounced reduction of the fatigue strength may be considered within the recommendations to ensure an overall conservative assessment.
Originalspracheenglisch
Aufsatznummer105784
FachzeitschriftInternational Journal of Fatigue
Jahrgang139
AusgabenummerOctober
DOIs
PublikationsstatusVeröffentlicht - Okt 2020
Extern publiziertJa

Schlagwörter

  • Fatigue strength assessment
  • HFMI-treatment
  • High-strength steel
  • Welded joints

ASJC Scopus subject areas

  • !!Mechanics of Materials
  • !!Mechanical Engineering
  • !!Materials Science(all)
  • !!Industrial and Manufacturing Engineering
  • !!Modelling and Simulation

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