Abstract
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/cm2) 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.
Highlights
Applications using high strain rate laser shock is continuously developing in the last decade
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 )
Laser shock is used for engineering applications, for example, Laser Shock Peening (LSP)1–4 to enhance the resistance of materials to surface-related failures such as fatigue or corrosion
Summary
Applications using high strain rate laser shock is continuously developing in the last decade. Laser shock is used for engineering applications, for example, Laser Shock Peening (LSP) to enhance the resistance of materials to surface-related failures such as fatigue or corrosion.. Laser shock is used for engineering applications, for example, Laser Shock Peening (LSP) to enhance the resistance of materials to surface-related failures such as fatigue or corrosion.5,6 This process introduces compressive residual stress fields at the surface through possible dislocations and grain refinement due to high strain rate hardening and by doing so improves tribological performances. Another promising application is the laser adhesion test (LASAT), where researchers evaluate the bonding strength in stack of laminates Carbon Fiber Reinforced.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
