Modeling of multi-edge effects in the case of laser shock loadings applied on thin foils: Application for material characterization of aluminum alloys
Article dans une revue avec comité de lecture
Date
2022Journal
Journal of Applied PhysicsRésumé
This article presents the study of the shock wave propagation through aluminum alloys (pure aluminum and aluminum 2024-T3) produced by laser plasma using experimental and numerical tests. Water confinement regime interaction, pulse duration (7.2 ns), and power density (1-5 GW / cm 2) range correspond to laser shock peening process configuration and parameters. To that scope, we simulate the shock wave propagation using non-linear explicit code LS-DYNA, which we validate with experimental results. Thereupon, we present a descriptive analysis that links separately the material model and loading conditions to the dynamic response of aluminum alloys under high strain rate laser shock by coupling the Johnson-Cook (J-C) material model with the Grüneisen equation of state (MAT_015 and EOS_GRUNEISEN accordingly). In addition, we make use of stress propagation into target thickness to analyze the origin of different points on the Back Face Velocity (BFV) profile during shock propagation. Finally, we provide evidence that 2D compressive effects do not depend only on the focal spot size or target thickness such as the edge effects but also on power density and material initial yield strength.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Documents liés
Visualiser des documents liés par titre, auteur, créateur et sujet.
-
Article dans une revue avec comité de lectureAYAD, Mohammad; UNALDI, Selen; SCIUS-BERTRAND, Marine; LE BRAS, C.; FAYOLLE, Bruno; BERTHE, Laurent (Elsevier BV, 2023-03)The presented work covers the response of Aluminium tape (Al tape) under high strain rate of deformation (order of 106s−1) using laser shock. High power laser (J) with a short pulse duration (ns) is used to create laser ...
-
Article dans une revue avec comité de lectureLE BRAS, Corentin; RONDEPIERRE, Alexandre; SEDDIK, Raoudha; SCIUS-BERTRAND, Marine; ROUCHAUSSE, Yann; VIDEAU, Laurent; GERVAIS, Matthieu; MORIN, Leo; VALADON, Stéphane; ECAULT, Romain; FURFARI, Domenico; BERTHE, Laurent; FAYOLLE, Bruno (MDPI, 2019)This paper presents the first extensive study of the performances of solid polymers used as confinement materials for laser shock applications such as laser shock peening (LSP) as opposed to the exclusively used water-confined ...
-
Article dans une revue avec comité de lectureAYAD, Mohammad; LAPOSTOLLE, Lucas; RONDEPIERRE, Alexandre; BRAS, Corentin Le; ÜNALDI, Selen; DONIK, Črtomir; KLOBČAR, Damjan; BERTHE, Laurent; TRDAN, Uroš (Elsevier, 2022-08)This paper presents an innovative methodology of material characterization under high strain rate (order of 107s��1) laser shock loading coupled with microstructural and mechanical material features. To that scope, ...
-
Article dans une revue avec comité de lectureSCIUS-BERTRAND, Marine; VIDEAU, Laurent; RONDEPIERRE, Alexandre; LESCOUTE, Emilien; ROUCHAUSSE, Yann; KAUFMAN, Jan; ROSTOHAR, Danijela; BRAJER, Jan; BERTHE, Laurent (IOP Publishing, 2021)Optimization of the laser shock peening (LSP) and LASer Adhesion Test (LASAT) processes requires control of the laser-induced target's loading. Improvements to optical and laser technologies allow plasma characterization ...
-
Article dans une revue avec comité de lectureLE BRAS, Corentin; RONDEPIERRE, Alexandre; AYAD, Mohammad; GERVAIS, Matthieu; VALADON, Stéphane; BERTHE, Laurent (MDPI AG, 2021)Through the years, laser shock peening became a treatment of choice in the aerospace industry to prolong the life of certain critical pieces. Water flow is commonly used as a confinement to improve the process capability ...