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APPLICATION OF BIOMIMETIC LASER SHOCK PROCESSING TECHNOLOGY FOR HARDENING OF ALUMINUM ALLOYS

The purpose of this work is to study the influence of the new technology of biomimetic laser shock processing (BLSP) in relation to samples made of aluminum alloy 2024-T351. The biomimetic parameters of BLSP are extracted from cherry leaves. Based on the extracted biomimetic parameters, a 3D finite element model (FEM) has been developed to study the effect of BLSP processing on the distribution of residual stress fields. The results obtained show that BLSP processing contributes to the formation of the so-called sandwich structure of the distribution of residual stresses in depth. It is shown that the residual stress field is divided into three layers: compressive residual stresses (CRS) are located on both surfaces, and tensile residual stresses (TRS) are located in the middle of the sample.