Abstract
Using numerical simulations (RADIOSS), 2D mechanical effects induced at laser spot edges have been studied. Results show that during the propagation in material, tensile lateral waves are generated behind the main compressive shock. The main shock wave is attenuated and/or the interface coating-substrate can be debonded by this tensile wave. Experimental validation has be done using pure Al target and Cu thermal spraying coating on Al substrate. Free rear velocity profiles measured by Doppler Velocimetry technique are in rather good agreement in both configurations. New perspectives are open with the 2D-LASAT test for massive target and so, new industrial applications.Using numerical simulations (RADIOSS), 2D mechanical effects induced at laser spot edges have been studied. Results show that during the propagation in material, tensile lateral waves are generated behind the main compressive shock. The main shock wave is attenuated and/or the interface coating-substrate can be debonded by this tensile wave. Experimental validation has be done using pure Al target and Cu thermal spraying coating on Al substrate. Free rear velocity profiles measured by Doppler Velocimetry technique are in rather good agreement in both configurations. New perspectives are open with the 2D-LASAT test for massive target and so, new industrial applications.
Published Version
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