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Experimental Techniques

, Volume 43, Issue 1, pp 41–56 | Cite as

Low-Cycle Fatigue, Fractography and Life Assessment of EN AW 2024-T351 under Various Loadings

  • M. Peč
  • J. Zapletal
  • F. ŠebekEmail author
  • J. Petruška
Article
  • 291 Downloads

Abstract

The paper provides extensive experiments on aluminium alloy 2024-T351. Those cover the uniaxial strain- and stress-controlled tests using cylindrical specimens. Then, multiaxial tests were conducted via strain- and stress-controlled tensile–torsional loading on tubular specimens, which also cover the following non-proportional test – the 3-step experiment carried out in order to document the additional hardening. The paper also provides a fractography using the scanning electron microscopy and the life assessment. A novel approach to fatigue life prediction is presented, based on replacing the plastic part of the strain-life curve by the non-linear term in order to provide more variability and approximation ability. The broad experimental base will serve as a basis for future calibration and simulation using advanced cyclic plasticity models within the finite elements.

Keywords

Biaxial stress Electron microscopy Fracture Aluminium alloys Elastic–plastic behaviour 

Notes

Acknowledgments

This work is an output of project NETME CENTRE PLUS (LO1202) created with financial support from the Ministry of Education, Youth and Sports under the „National Sustainability Programme I“. Access to computing and storage facilities owned by parties and projects contributing to the National Grid Infrastructure MetaCentrum provided under the programme „Projects of Large Research, Development, and Innovations Infrastructures “(CESNET LM2015042), is also acknowledged.

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Copyright information

© The Society for Experimental Mechanics, Inc 2018

Authors and Affiliations

  1. 1.Institute of Solid Mechanics, Mechatronics and Biomechanics, Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic
  2. 2.Institute of Materials Science and Engineering, Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic

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