Abstract
Laser shock processing (LSP) is an innovative surface treatment technique. It can impart compressive residual stresses in material for improving the fatigue, corrosion, and wear resistance of metals. This technology has been used successfully for the treatment not only of traditional structural materials, but also for hard materials. FEM simulation is an effective method for the prediction of mechanical effects induced in material treated by laser shock processing. The FEM simulation of the single and multiple laser shock processing has been carried out to predict the residual stress field. The predicted residual stress field for single and multiple laser shock processing is well correlated with available experimental data. The simulation of multiple laser shocks has shown that compressive residual stresses and, thus, the strength properties of processed materials, can be extensively increased (up to 40%) with the increase of the laser shock number up to 5, and then they gradually reach a saturated state.
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Original Russian Text © G.Zh. Sakhvadze, L.V. Gavrilina, 2015, published in Problemy Mashinostroeniya i Nadezhnosti Mashin, 2015, No. 6, pp. 75–80.
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Sakhvadze, G.Z., Gavrilina, L.V. Single and multiple laser shock processing of materials. J. Mach. Manuf. Reliab. 44, 549–554 (2015). https://doi.org/10.3103/S105261881506014X
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DOI: https://doi.org/10.3103/S105261881506014X