Laser Shock Peening for Gas Turbine Engine Vane Repair

Author:  Mannava et al.
Source:  US Patent 5,675,892
Doc ID:  1996147
Year of Publication:  1996
Abstract:  
A wide gap braze-repair, particularly for a gas turbine engine vane or a component in the hot section of the engine. The repair is characterized by a braze filled void in a damaged area of the component, a laser shock peened surface over the repaired area of the braze filled void, and a region of deep compressive residual stresses imparted by laser shock peening (LSP) extending from the laser shock peened surface into the repair.