Precision Deep Peening with Mechanical Indicator

Author:  Peter G Bailey; Dewey D Dunkman, Ohio
Source:  US Patent 5,771,729
Doc ID:  1998022
Year of Publication:  1998
Abstract:  
An apparatus produces compressive stress in a component surface. Positioning of a contact area of the component surface is controlled to situate a contact area of the component surface relative to an indenter element. The indenter element is fixtured to cause an indentation at the contact area. The force of the indentation is measured as the indenter element contacts the contact area, and controlled responsive to the amount of force measured and the desired compression. The system allows deep compressive stresses to be generated without the surface damage associated with conventional peening.