• 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.

A Biaxial Fatigue Specimen for Uniaxial Loading

Article dans une revue avec comité de lecture
Author
ccBELLETT, Daniel
ccMOREL, Franck
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
MOREL, Anne
196653 Centre de recherche en Biologie Cellulaire [CRBM]
LEBRUN, Jean-Lou

URI
http://hdl.handle.net/10985/7805
DOI
10.1111/j.1475-1305.2009.00674.x
Date
2011
Journal
Strain

Abstract

The aim of this paper is to present a novel un-notched fatigue test specimen in which a biaxial stress state is achieved using a uniaxial loading condition. This allows the problem of multi-axial fatigue to be studied using relatively common one-axis servo-hydraulic testing machines. In addition the specimen presented here is very compact and can be made using a small volume of material (100x40x4.5mm). For this specimen, the degree of biaxiality, defined by the parameter is equal to approximately 0.45. The specimen geometry was optimised using the Dang Van multi-axial fatigue criterion. In addition to use as a fatigue specimen, it has been demonstrated that the biaxial specimen presented here is also suitable for biaxial tensile tests, to determine the rupture strength of a material in a biaxial stress state. Two different materials have been investigated: The first was wrought aluminium 2024-O in the form of 5mm sheets. The second was a cast aluminium-silicon alloy AlSi7Cu0.5Mg0.3, commonly used in automotive and aeronautical applications. The fatigue strengths were determined at 2x106 cycles and at various R-ratios using a staircase procedure. For the aluminium 2024, it is shown that the biaxial stress state increases the maximum permissible first principal stress when compared to the uniaxial condition. However, in terms of the cast aluminium alloy, it has been demonstrated that this type of fatigue specimen is not suitable for materials containing casting defects, in particular micro-shrinkage pores, because the volume of material, in which the stress state is biaxial, is not large enough.

Files in this item

Name:
LAMPA_Strain_2011_BELLETT.pdf
Size:
1.492Mb
Format:
PDF
View/Open

Collections

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

Related items

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

  • Laser-assisted machining of Inconel 718 with carbide and ceramic inserts 
    Article dans une revue avec comité de lecture
    ccGERMAIN, Guénaël; LEBRUN, Jean-Lou; BRAHAM-BOUCHNAK, Tarek; ccBELLETT, Daniel; AUGER, Stéphane (SpringerLink, 2008)
    Laser assisted machining (LAM) can improve the machinability of materials by locally heating the material prior to its removal. The work presented here is a study of the laser assisted machining of Inconel 718 (NiCr19FeNb ...
  • The influence of laser assistance on the machinability of the titanium alloy Ti555-3 
    Article dans une revue avec comité de lecture
    BRAHAM-BOUCHNAK, Tarek; ccGERMAIN, Guénaël; MOREL, Anne; LEBRUN, Jean-Lou (Springer Verlag, 2013)
    The Ti533-3 alloy is a new titanium alloy which is starting to see increased use in the aeronautical domain to improve the durability of components and to optimize the weight/resistance ratio. This alloy is characterized ...
  • Modelling, identification and application of phenomenological constitutive laws over a large strain rate and temperature range 
    Article dans une revue avec comité de lecture
    HOR, Anis; ccMOREL, Franck; LEBRUN, Jean-Lou; ccGERMAIN, Guénaël (Elsevier, 2013)
    A review of the different phenomenological thermo-viscoplastic constitutive models often applied to forging and machining processes is presented. Several of the most common models have been identified using a large ...
  • An experimental investigation of the behaviour of steels over large temperature and strain rate ranges 
    Article dans une revue avec comité de lecture
    HOR, Anis; ccMOREL, Franck; LEBRUN, Jean-Lou; ccGERMAIN, Guénaël (Elsevier, 2013)
    During forging and machining manufacturing processes, the material is subject to large strains at high strain rates which provoke local heating and microstructural changes. Modelling of these phenomena requires precise ...
  • A new approach to model the fatigue anisotropy due to non-metallic inclusions in forged steels 
    Article dans une revue avec comité de lecture
    BELLETT, Daniel; MOREL, Anne; ccMOREL, Franck; ccPESSARD, Etienne (Elsevier, 2012)
    The objective of this work is to propose an anisotropic fatigue criterion for the sizing of industrial forged components. The results from different experimental campaigns using three different rolled steels are first ...

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