Method for integral turbine blade repair
US11225868B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Nov 27, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for design in indenter apparatus for plastically straining a workpiece including a weld nugget, adjacent heat affected zones, and the adjacent parent-metal portions or new metal portions, throughout the weld nugget volume and heat affected zone, to produce threshold levels of uniform plastic strain which meet or exceed plastic strain levels that provide, when the weld nugget and heat affected zone is heat treated, a recrystallized grain structure metallurgically comparable to the grain structure of the parent-metal. The indenter provided by the optimization methods may be used to advantageously in a method for the repair of damaged rotors, including integrally bladed rotors, in gas turbine engines, such as in aircraft engines. Blades for gas turbine engines, including integrally bladed rotors, may be advantageously provided constructed by the methods taught.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.