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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Langer, K.
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Topics
Publications (4/4 displayed)
- 2019The effect of material cyclic deformation properties on residual stress generation by laser shock processingcitations
- 2018The Fundamental Role of Laser-Plasma Interaction and Materials Behaviour Models in the Predictive Assessment of Residual Stresses Fields Induced in Metallic Materials by LSP
- 2018Effect of texture on the residual stress response from laser peening of an aluminium-lithium alloycitations
- 2018Effect of alloy temper on surface modification of aluminium 2624 by laser shock peeningcitations
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article
Effect of texture on the residual stress response from laser peening of an aluminium-lithium alloy
Abstract
<p>Laser shock peening can improve the damage tolerance of metallic materials by introducing deep compressive residual stress that inhibits crack initiation and growth. This study investigates the laser peening of aluminium alloy in a product form – an extruded T-section – that has different crystallographic textures in different locations. The alloy studied is Al 2099, an aluminium-lithium alloy that shows anisotropy in the mechanical properties when texture is present. Specimens extracted from different regions of the extrusion were laser shock peened with a power density of 3 GW/cm<sup>2</sup> in single shocks as well as in a pattern. Residual stresses were characterized primarily using incremental hole drilling. The results show 20% higher residual stresses in the web area of the extrusion compared to the flange after peening with a single laser shock, with this difference decreasing as the number of shocks increases. This effect can be explained by the difference in yield strength between those locations. No significant differences were observed in the residual stresses from peening onto different planes of a textured sample at a given location.</p>