Fatigue Lifetime of 7075 Aluminium Alloy from Ultimate Tensile Strength to Permanent Fatigue Limit

  • Josef Zapletal
  • Stanislav Vechet
  • Jan Kohout
  • Petr Liskutin
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Abstract

The aim of this paper is to study fatigue behaviour of 7075 aluminium alloy at room temperature for both important directions (longitudinal as well as transversal) with respect to the direction of forming. Smooth test bars were subjected to symmetrical push-pull loading at stresses which cover the whole range of lifetime from UTS to permanent fatigue limit. The results are presented above all as S-N curves fitted using suitable regression functions which lead to precise and reliable determination of fatigue limits. 

Author Biographies

Josef Zapletal

1Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic

Stanislav Vechet

1Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic

Jan Kohout

Department of Mathematics and Physics, Faculty of Military Technology, University of Defence, Brno, Czech Republic

Petr Liskutin

Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Brno, Czech Republic

Published
2009-03-31
How to Cite
Zapletal, J., Vechet, S., Kohout, J., & Liskutin, P. (2009). Fatigue Lifetime of 7075 Aluminium Alloy from Ultimate Tensile Strength to Permanent Fatigue Limit. Communications - Scientific Letters of the University of Zilina, 11(1), 17-21. Retrieved from http://journals.uniza.sk/index.php/communications/article/view/976
Issue
Vol 11 No 1 (2009)
Section
Articles