Metal working – Method of mechanical manufacture – Impeller making
Patent
1995-12-12
1998-04-07
Cuda, Irene
Metal working
Method of mechanical manufacture
Impeller making
2988972, B23P 1500
Patent
active
057350442
ABSTRACT:
A crack weld repair and method, particularly, for a gas turbine engine blade or other metallic component in the engine, providing a metallic substrate, a metallic filler bonded onto a substrate bond surface on the metallic substrate, and a region having deep compressive residual stresses imparted by laser shock peening extending into the substrate beneath the substrate bond surface. One embodiment provides a laser shock peened surface below the weld material filled void in a damaged area of the component forming a region of deep compressive residual stresses imparted by laser shock peening (LSP) extending from the laser shock peened surface into the component. Optionally, the surface over the repaired area of the weld filled void may also be laser shock peened forming a second region of deep compressive residual stresses imparted by laser shock peening (LSP) extending from the laser shock peened surface into the weld repair. Another embodiment provides a weld buildup tip overlay on a substrate bond surface of an airfoil tip having a laser shock peened region beneath the substrate bond surface.
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Cowie William D.
Ferrigno Stephen J.
Mannava Seetharamaiah
Cuda Irene
General Electric Company
Herkamp Nathan D.
Hess Andrew C.
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