Effect of surface properties on high cycle fatigue behaviour of shot peened ductile steel

摘要: AbstractExperimental investigations into shot peened ductile steel have been carried out, applying three surface finishing conditions: as machined, standard peening using 100% coverage and severe with 1000% (high exposure time). The properties of the surfaces were examined characterised, specimens then submitted to point bending tests. fatigue limit was determined for each case. In this way, dependence behaviour on initial determined, a relationship is suggested describe correlate limits properties. A phenomenological approach proposed characterise qualitatively quantitatively influence local treated specimens. Crossland multiaxial failure high cycle criterion used in model property.