초록 ▼

A method is disclosed for repairing damage to an airfoil. The method provides for the removal of a section of the airfoil that substantially encompasses the damaged area, which consequently leaves a void and a cut-away surface in the airfoil. A replacement piece larger than the residual void is prov

A method is disclosed for repairing damage to an airfoil. The method provides for the removal of a section of the airfoil that substantially encompasses the damaged area, which consequently leaves a void and a cut-away surface in the airfoil. A replacement piece larger than the residual void is provided for use in replacing the section removed from the airfoil. A joining operation welds or otherwise joins the replacement piece to the airfoil at the cut-away surface to form a joined airfoil. The joined airfoil has a seam between the airfoil and the replacement piece. At least a portion of the seam is processed by laser shock peening to induce compressive residual stresses therein.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of repairing an airfoil having a damaged area, the method comprising the steps of:removing a section of the airfoil containing the damaged area, leaving a void and a cut-away surface in the airfoil;providing a replacement piece for use in replacing the section

[ What is claimed is:] [1.]1. A method of repairing an airfoil having a damaged area, the method comprising the steps of:removing a section of the airfoil containing the damaged area, leaving a void and a cut-away surface in the airfoil;providing a replacement piece for use in replacing the section removed from the airfoil;joining the replacement piece to the airfoil at the cut-away surface forming a joined airfoil, the joined airfoil having a seam between the airfoil and the replacement piece;shaping the joined airfoil to return the joined airfoil to within predetermined dimensional tolerances; andlaser shock peening at least a portion of the seam of the joined airfoil, imparting compressive residual stresses therein.