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Investigation of the sensitivity of the fatigue resistance to defect position in aluminium alloys obtained by Selective laser melting using artificial defects

Article dans une revue avec comité de lecture
Author
BONNERIC, Matthieu
417643 IRT Saint Exupéry - Institut de Recherche Technologique
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
BRUGGER, Charles
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]
SAINTIER, Nicolas
164351 Institut de Mécanique et d'Ingénierie de Bordeaux [I2M]

URI
http://hdl.handle.net/10985/18095
DOI
10.1016/j.ijfatigue.2020.105505
Date
2020
Journal
International Journal of Fatigue

Abstract

This study focuses on the influence of defects on the fatigue behavior of AlSi7Mg0.6 alloy produced by Selective laser melting. Artificial defects were generated in fatigue specimens by introducing holes in the CAD files prior manufacturing. The introduction of such defects, whose sizes and positions are controlled, aims to provide a proper assessment of defect sensitivity, in particular regarding the influence of defect position. Fatigue tests were performed, and finite-element calculations accounting for real defect geometries were conducted. The criticalities of the simulated defects were then evaluated using a non-local Crossland criterion, and discussed with regard to the experimental results.

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