A method for laser shock peening of a metal material edge structure

By adjusting the arrangement of impact spots and optimizing the distance through numerical simulation, the stress concentration problem of edge structures in metal materials during laser shock strengthening was solved, thereby improving fatigue resistance and extending the service life of structural components.

CN116640918BActive Publication Date: 2026-04-21XIAN TYRIDA OPTICAL ELECTRIC TECH CO LTD
2 Cites 0 Cited by

Patent Information

Application Number
CN202310603961.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-25
Publication Date
2026-04-21
Estimated Expiration
2043-05-25

AI Technical Summary

Technical Problem

Stress concentration is prone to occur in the edge structure of metallic materials during laser shock strengthening, leading to fatigue cracking. Existing technologies are unable to effectively improve fatigue resistance.

Method used

By adjusting the arrangement of impact spots at the edge structure, optimizing the distance between the impact spot edge and the edge surface through numerical simulation, and attaching an absorbing protective layer at the edge position, laser shock strengthening of the primary and secondary strengthening surfaces is carried out to control deformation and regulate residual stress.

Benefits of technology

It achieves deformation control and residual stress regulation of edge structures, improves the fatigue resistance of laser shock, and enhances the service life and reliability of structural components.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

This invention discloses a laser shock peening method for edge structures of metallic materials, comprising: S1, determining the type and size of the edge structure; S2, dividing two adjacent planes of the edge structure into a primary strengthening surface and a secondary strengthening surface, and calculating the orientation relationship between the two strengthening surfaces; S3, using the bisector of the angle between the normals of the two planes as the normal to the edge surface to determine its position; S4, determining the laser shock peening power density and shock spot radius; S5, optimizing the distance between the edge surface and the edge surface on the two curved surfaces at the edge structure; S6, applying an absorbing protective layer to the strengthening area of ​​the primary strengthening surface; S7, applying an absorbing protective layer to the strengthening area of ​​the secondary strengthening surface; S8, determining the size of the strengthening area at the edge position, applying an absorbing protective layer at the edge position, and performing laser shock peening on the edge position. This invention achieves deformation control and residual stress regulation of the edge structure by adjusting the shock spot arrangement at the edge structure, meeting the requirements for laser shock fatigue resistance modification of edge structures.
Need to check novelty before this filing date? Find Prior Art