Plasma shock wave simulation for laser shock processing

Activity: Talk or presentationPresentations (poster etc.)Research

Vasily Pozdnyakov - Speaker

Jens Martin Oberrath - Coauthor

    Improvement of mechanical properties such as fatigue life, corrosion,wear and erosion resistance of material surfaces has become an integralpart of industrial operations. Laser shock peening (LSP) is one ofthe advanced surface modification techniques. When focusing a short(ns range) and intense (>1 GW/cm2) laser pulse onto a metallic target,surface layers instantaneously vaporize into a high temperature(about 10 000 K) and high pressure (> 1 GPa) plasma. This plasmainduces a shock wave during expansion from the irradiated surfaceand a mechanical impulse transfers to the target resulting in plasticdeformations and residual stresses appear.In this work a 1D model, based on a global model of Zhang et al.[1, 2], is implemented in Python. As a result of its numerical solutionthe influence of laser parameters on the results of processing isinvestigated. Pressure distribution and plasma parameters are definedand compared both with experimental results and numerical modelsof other researchers.[1] W. Zhang and Y.L. Yao, Proceedings of the ICALEO 2001[2] W. Zhang, Y.L. Yao, I.C. Noyan, J. Manuf. Sci. E. - T. ASME126, 10 (2004)


    82. Jahrestagung der DPG und DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Plasmen - SAMOP 2018


    Erlangen, Germany

    Event: Conference

      Research areas

    • Engineering - LSP, Plasma, Peening, Shock ware