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dc.contributor.authorBELLETT, Daniel
dc.contributor.author
 hal.structure.identifier
MOREL, Anne
196653 Centre de recherche en Biologie Cellulaire [CRBM]
dc.contributor.authorLEBRUN, Jean-Lou
dc.contributor.author
 hal.structure.identifier
MOREL, Franck
206863 Laboratoire des Arts et Métiers ParisTech d'Angers - Procédés Matériaux Durabilité [LAMPA - PMD]
dc.date.accessioned2014
dc.date.available2014
dc.date.issued2011
dc.date.submitted2013
dc.identifier.issn0039-2103
dc.identifier.urihttp://hdl.handle.net/10985/7805
dc.description.abstractThe 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.
dc.description.sponsorshipThe authors gratefully acknowledge the financial support of PSA – Peugeot Citroën and also that of the Conseil Général du Département de Maine-et-Loire, France.
dc.language.isoen
dc.publisherWiley-Blackwell
dc.rightsPost-print
dc.subjectAl-2024-O
dc.subjectAlSi7Cu0.5Mg0.3
dc.subjectbiaxial
dc.subjectfatigue
dc.subjectspecimen
dc.titleA Biaxial Fatigue Specimen for Uniaxial Loading
dc.identifier.doi10.1111/j.1475-1305.2009.00674.x
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Angers
dc.subject.halSciences de l'ingénieur: Génie des procédés
dc.subject.halSciences de l'ingénieur: Matériaux
dc.subject.halSciences de l'ingénieur: Mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Génie mécanique
dc.subject.halSciences de l'ingénieur: Mécanique: Mécanique des matériaux
ensam.audienceInternationale
ensam.page227-240
ensam.journalStrain
ensam.volume47
ensam.issue3
hal.identifierhal-00953546
hal.version1
hal.statusaccept
dc.identifier.eissn1475-1305


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