Modeling of multi-edge effects in the case of laser shock loadings applied on thin foils : application for material characterization of aluminum alloys

Ayad, Mohammad (avtor), Trdan, Uroš (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: aluminum alloys, laser shock waves, numerical simulation, Johnson-Cook model, equations of state, wave mechanics, alloys, mechanical stress, material characterization methods, laser peening, plasmas, shock waves
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2022
• Št. strani: 17 str.
• Številčenje: Vol. 131, iss. 9, art. 095902
• PID: 20.500.12556/RUL-135511
• UDK: 620.1:669:519.62
• ISSN pri članku: 0021-8979
• DOI: 10.1063/5.0080326
• COBISS.SI-ID: 101162243
• Datum objave v RUL: 17.03.2022

Gradivo je del revije

• Naslov: Journal of applied physics
• Skrajšan naslov: J. appl. phys.
• Založnik: AIP Publishing
• ISSN: 0021-8979
• COBISS.SI-ID: 4730378

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: aluminijeve zlitine, laserski udarni valovi, numerične simulacije, Johnson-Cookov model