Snecma

Sonats-societe Des Nouvelles Applications Des Techniques De Surfaces

General Electric Company

Vincent Desfontaine

Patrick Cheppe

Jean-Michel Duchazeaubeneix

Philippe Jacob

Raymond Joseph Stonitsch

Diane Marie Beagle

Ray Stonitsch

Diane Beagle

Ultrasonic peening treatment is desirable where an application of a compressive stress is helpful to reduce the incidence of crack formation on highly stressed parts. Ultrasonic peening 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 component and includes support structure 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.

Ultrasonic peening treatment of assembled components

The present invention provides a method of shot peening at least a portion of a rotary machine comprising a rotor. Shot peening is carried out with a rotor which is at least partly assembled. The method comprises:

Shot peening methods and units

Shot for use in a peening installation, the shot having:

Shot, devices, and installations for ultrasonic peening, and parts treated thereby

A system for ultrasonically peeing surfaces includes a sonotrode comprising a body material and a vibrating surface, the vibrating surface coated with a coating material having a hardness greater than the body material, a treatment chamber defined at least in part by the vibrating surface, and at least one piece of shot within the treatment chamber to be excited by the vibrating surface of the sonotrode, the at least one piece of shot having a hardness greater than or equal to 800 HV.

The present invention provides a method of shot peening at least a portion of a rotary machine comprising a rotor. Shot peening is carried out with a rotor which is at least partly assembled. The method includes

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Blainville, Canada

Vincent Desfontaine