Reliability and Safety of Structural Elements in the Gigacycle Region of Loading

  • Frantisek Novy
  • Robert Ulewicz
  • Otakar Bokuvka
  • Libor Trsko
  • Jan Lago
Keywords: reliability, safety, steel STRENX 700MC, structural elements, gigacycle fatigue

Abstract

The authors of this paper, based on their own results, discuss fatigue properties of low-alloyed fine-grained steel STRENX 700MC obtained in the ultra-high-cycle region (gigacycle fatigue) with regard to the reliability and safety of structural elements. According to obtained data it is obvious that fatigue strength continuously decreases with increasing number of cycles to failure (in a range from N = 10(7) to N = 10(10) cycles). Fatigue limit σc determined usually at N = 2 × 10(6) ÷ 10(7) cycles does not meet the requirements of reliability and safety of structural elements. Design of structural elements which will be working in the ultra-high-cycle fatigue region requires complete information about fatigue behavior of used structural materials.

Author Biographies

Frantisek Novy

Department of Materials Engineering, Faculty of Mechanical Engineering, University of Zilina, Slovakia and Research Centre of the University of Zilina, Slovakia

Robert Ulewicz

Czestochowa University of Technology, Inst. of Production Technology, Czestochowa, Poland

Otakar Bokuvka

Department of Materials Engineering, Faculty of Mechanical Engineering, University of Zilina, Slovakia

Libor Trsko

Research Centre of the University of Zilina, Slovakia

Jan Lago

Department of Materials Engineering, Faculty of Mechanical Engineering, University of Zilina, Slovakia

Published
2016-09-30
How to Cite
Novy, F., Ulewicz, R., Bokuvka, O., Trsko, L., & Lago, J. (2016). Reliability and Safety of Structural Elements in the Gigacycle Region of Loading. Communications - Scientific Letters of the University of Zilina, 18(3), 83-87. Retrieved from http://journals.uniza.sk/index.php/communications/article/view/315
Issue
Vol 18 No 3 (2016)
Section
Articles