• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • View Item
  • Home
  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The influence of machined topography on the HCF behaviour of the Al7050 alloy

Type
Communications avec actes
Author
ABROUG, Foued
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
PESSARD, Etienne
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
GERMAIN, Guénaël
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
MOREL, Franck
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
CHOVE, Etienne
536792 Europe Technologies

URI
http://hdl.handle.net/10985/16579
DOI
10.1016/j.proeng.2018.02.057
Date
2018

Abstract

The aim of this study is to identify the impact of High Speed Machining defects on the fatigue behaviour of the Al7050 aluminium alloy. A vast experimental campaign under fully reversed plane bending loads containing different surface states has been undertaken to characterize the effect of the surface topography on the fatigue behaviour. The results show that the fatigue strength decreases only when the surface roughness is significantly degraded. It is also pointed out that manual grinding eliminates the effect of the machining defects on the fatigue behaviour. In order to predict the influence of the surface condition on the fatigue behaviour, a numerical approach based on the real surface topology has been developed. It is shown that the numerically identified crack initiation sites are in agreement with the experimental results. A probabilistic approach based on the weakest link concept, associated with the definition of a stress based crack initiation threshold has been integrated in a FE model. This approach leads naturally to a probabilistic Kitagawa type diagram, which in this case explains the relationship between the size defect and the scale effect on the fatigue strength.

Files in this item

Name:
LAMPA_ICFD_2017.11_ABROUG.pdf
Size:
1.314Mb
Format:
PDF
View/Open

Collections

  • Laboratoire Angevin de Mécanique, Procédés et InnovAtion (LAMPA)

Related items

Showing items related by title, author, creator and subject.

  • Effet des défauts d’usinage sur la tenue en fatigue d’un alliage Al7050. 
    ABROUG, Foued; PESSARD, Etienne; GERMAIN, Guénaël; MOREL, Franck; CHOVE, Etienne (2016)
    Lors du fraisage UGV de pièces aéronautiques, certains défauts géométriques, tels que les ressauts et les marques de vibration, peuvent être générés. Pour obtenir une surface de bonne qualité, une opération de rectification ...
  • The effect of machining defects on the fatigue behaviour of the Al7050 alloy 
    ABROUG, Foued; PESSARD, Etienne; GERMAIN, Guénaël; MOREL, Franck; CHOVE, Etienne (2016)
    During the High Speed Machining (HSM) of aircraft components, geometrical defects, such as mismatches or chatters, can be created. To obtain a high surface quality, an expensive manual grinding operation is systematically ...
  • A probabilistic approach to study the effect of machined surface states on HCF behavior of a AA7050 alloy 
    ABROUG, Foued; PESSARD, Etienne; GERMAIN, Guénaël; MOREL, Franck (Elsevier BV, 2018)
    The aim of this study is to understand the impact of periodic surface micro-geometry patterns (obtained by High Speed Machining process) on the fatigue behavior of the AA7050 aluminium alloy and to define a proper defect ...
  • HCF of AA7050 alloy containing surface defects: Study of the statistical size effect 
    ABROUG, Foued; PESSARD, Etienne; GERMAIN, Guénaël; MOREL, Franck (Elsevier BV, 2018)
    This work investigates the effect of artificial surface defects on the fatigue limit of a 7050 Aluminum alloy (AlZn6CuMgZr). A large fatigue testing campaign under fully reversed plane bending loading is undertaken on ...
  • The effect of quenching and defects size on the HCF behaviour of Boron steel 
    PESSARD, Etienne; ABRIVARD, Benjamin; MOREL, Franck; ABROUG, Foued; DELHAYE, Philippe (Elsevier, 2014)
    This work investigates the effect of natural and artificial surface defects and quenching on the fatigue strength of a Boron steel (22MnB5). A vast experimental campaign has been undertaken to study the high cycle fatigue ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales