“…The FE studies conducted to date suggest that the CRS is distributed on the front side, the back side, and the middle plane of the specimen, while TRS is distributed under the CRS layer. [176][177][178] A symmetrical M-shaped stress distribution field is obtained, and the magnitude of the residual stress depends on the thickness of the sheet. [172,174,175,179] In double-sided LSP, it is typically necessary to ensure not only that the simultaneous laser shocks occur from both sides of the sample but that they also focus on the same position, which can be challenging for components with asymmetric structures, such as the tenon joint of an AE blade.…”