Resumen

SOLIS ROMERO, José; ANGUIANO GARCIA, Alfonso  y  GARCIA MACEDO, Antonio. Surface Roughness and Residual Stresses on the Fatigue Life of Shot Peened Components: Theoretical Determination. Ingenier. mecáni. tecnolog. desarroll [online]. 2008, vol.3, n.1, pp.17-20. ISSN 1665-7381.

The effects of the shot peening process on the fatigue damage are analysed and modelled. Surface roughness is modelled in a way that would increase the far-field stress. Compressive residual stresses translated as closure stresses which tend to reduce the application of the far-field stress by introducing this closure stress on the crack flanks and thus the propagation of the crack is expected to be somewhat reduced compared to the unpeened condition.

Palabras llave : Controlled shot peening; fatigue life improvement; micromechanical model.