Non-destructive Detection of the Effect of Laser Shock Processing

As a new surface strengthening technology,laser shock processing(laser peening) uses intensepulse laser to produce shock waves on metal surface,which induces strain hardening on the surface of metal.The workpiece must be inspected after LSP,but the workpiece should not be destroyed to identify the effeck of LSP.As a result,selecting the appropriate examination is the key of LSP applied in engineering.Residual stress,surface roughness,microhardness were brought forward to inspect the effect of LSP.