ULTRASONIC PEENING TREATMENT OF ASSEMBLED COMPONENTS

Author:  Stonitsch, Beagle, Duchazeaubeneix, Cheppe, Jacob,
Source:  US Patent 7,992,416 B2
Doc ID:  2011130
Year of Publication:  2011
Abstract:  
Ultrasonic peening treatment is dcsirable where an application of a compressive stress is helpftI! to reduce the incidence of crack formation on highly strcssed parts. Ultrasonic pecning treatment can be performed in field applications without requiring a rotor to be removed from the machine. The system includes an acoustic element that excites peening media within a peen chamber. A frame is attachable to an assembled turbine rotor componenl and includes support stmcture engageable with the acoustic element. The frame is cooperable with a chamber tooling that defines and encloses the peen chamber together with the turbine rotor component.