0000000000186057

AUTHOR

Neila Hfaiedh

showing 3 related works from this author

Experimental and Numerical Analysis of the Distribution of Residual Stresses Induced by Laser Shock Peening in a 2050-T8 Aluminium Alloy

2011

Laser shock peening (LSP) is an innovative surface treatment technique successfully applied to improving fatigue performance of metallic material. The specific characteristic of (LSP) is the generation of a low work-hardening and a deep compressive residual stresses mechanically produced by a laser-induced shock wave propagating in the material. The aim of this study is to analyse the residual stress distribution induced by laser peening in 2050-T8 aluminium alloy experimentally by the X-ray diffraction technique (method sin2Y) and numerically, by a finite element numerical modelling. A specific focus was put on the residual stress distribution along the surface of the impacted material.

Shock waveMaterials scienceMechanical EngineeringLaser peeningMetallurgyPeeningCondensed Matter PhysicsShot peeningFinite element methodShock (mechanics)Mechanics of MaterialsResidual stressvisual_artAluminium alloyvisual_art.visual_art_mediumGeneral Materials ScienceMaterials Science Forum
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Finite element analysis of laser shock peening of 2050-T8 aluminum alloy

2015

Laser shock processing is a recently developed surface treatment designed to improve the mechanical properties and fatigue performance of materials, by inducing a deep compressive residual stress field. The purpose of this work is to investigate the residual stress distribution induced by laser shock processing in a 2050-T8 aeronautical aluminium alloy with both X-ray diffraction measurements and 3D finite element simulation. The method of X-ray diffraction is extensively used to characterize the crystallographic texture and the residual stress crystalline materials at different scales (macroscopic, mesoscopic and microscopic).Shock loading and materials’ dynamic response are experimentally…

DiffractionMatériaux [Sciences de l'ingénieur]Materials scienceResidual stressIndustrial and Manufacturing Engineering[SPI.MAT]Engineering Sciences [physics]/MaterialsMaterials Science(all)Residual stressModelling and SimulationHomogeneity (physics)Aluminium alloyGeneral Materials ScienceLaser shock peeningComposite materialAnisotropyMécanique [Sciences de l'ingénieur]business.industryMechanical EngineeringSurface stressFinite element analysisPeeningStructural engineering[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]Finite element methodMechanics of MaterialsModeling and Simulationvisual_artvisual_art.visual_art_mediumbusiness
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Laser shock processing with two different laser sources on 2050‐T8 aluminum alloy

2011

PurposeThe purpose of this paper is to conduct a comparative study of the surface modifications induced by two different lasers on a 2050‐T8 aluminum alloy, with a specific consideration of residual stress and work‐hardening levels.Design/methodology/approachTwo lasers have been used for Laser shock peening (LSP) treatment in water‐confined regime: a Continuum Powerlite Plus laser, operating at 0.532 mm with 9 ns laser pulses, and near 1.5mm spot diameters; a new generation Gaia‐R Thales laser delivering 10 J‐10 ns impacts, with 4‐6mm homogeneous laser spots at 1.06 mm. Surface deformation, work‐hardening levels and residual stresses were analyzed for both LSP conditions. Residual stresses …

Materials scienceMechanical EngineeringLaser peeningMetallurgyAlloychemistry.chemical_elementPeeningengineering.materialLaserFinite element methodlaw.inventionShock (mechanics)chemistryMechanics of MaterialsAluminiumResidual stresslawengineeringComposite materialCivil and Structural EngineeringInternational Journal of Structural Integrity
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