Common Failures In Common Machne Parts

Author:  Almen, J. O.
Source:  Metal Progress, May, 1943, p. 737
Doc ID:  1943000
Year of Publication:  1943
Abstract:  
In an article in the February issue of this magazine the general problem of fatigue failure was discussed, and it was pointed out that in the great majority of cases failure starts at a surface where high tension stresses are localized. It was demonstrated that if such a surface were prestressed in compression the liability to such fatigue failure would be correspondingly lessened, a fact which is utilized in practice by peening the surface. Methods of doing this, and of estimating the resulting compressive stresses, were also outlined.