Laser Shock Processing of thin Al2024-T351 plates for induction of through-thickness compressive residual stresses fields

摘要

Laser Shock Processing (LSP) has been demonstrated as an emerging technique for the induction of residual stresses (RS) fields in sub-surface layers of relatively thick specimens. However, the LSP treatment of relatively thin specimens brings, as an additional consequence, the possible bending in a process of laser shock forming. This effect poses a new class of problems regarding the attainment of specified RS's depth profiles in the mentioned type of sheets, and, what can be more critical, an overall deformation of the treated component.