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Characterisation of Fatigue and Crack Propagation in Laser Shock Peened Open Hole 7075-T73 Aluminium Specimens

  • G. Ivetic
  • I. Meneghin
  • E. Troiani
  • G. Molinari
  • A. Lanciotti
  • V. Ristori
  • J. L. Ocaña
  • M. Morales
  • J. A. Porro
  • C. Polese
  • A. M. Venter

Abstract

The goal of this research activity is to evaluate the capability of Laser Shock Peening (LSP) technology to improve fatigue life in open-hole aluminium specimens. Thin, dog-bone specimens were LSP treated in direct ablation mode and subsequently tested. The obtained results have not proven the advantage of LSP technology over traditional residual stress insertion techniques around open-holes, such as cold working. Therefore, the focus of the activity was moved towards understanding the causes of the observed fatigue life reduction.

Keywords

Residual Stress Fatigue Life Compressive Residual Stress Residual Stress Measurement Laser Power Density 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • G. Ivetic
    • 1
  • I. Meneghin
    • 1
  • E. Troiani
    • 1
  • G. Molinari
    • 1
  • A. Lanciotti
    • 2
  • V. Ristori
    • 2
  • J. L. Ocaña
    • 3
  • M. Morales
    • 3
  • J. A. Porro
    • 3
  • C. Polese
    • 4
  • A. M. Venter
    • 5
  1. 1.University of BolognaForlìItaly
  2. 2.University of PisaPisaItaly
  3. 3.Polytechnic University of MadridMadridSpain
  4. 4.University of the WitwatersrandJohannesburgSouth Africa
  5. 5.South African Nuclear Energy CorporationPretoriaSouth Africa

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