Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
778313 | International Journal of Fatigue | 2012 | 9 Pages |
Numerous studies have observed that the fatigue strength of improved welds increases with material yield strength. This paper provides a comprehensive evaluation of published data for high frequency mechanical impact treated welds. In total, 228 experimental results for three weld geometries subject to R = 0.1 axial loading have been reviewed. A design recommendation including one fatigue class increase in strength (about 12.5%) for every 200 MPa increase in static yield strength is proposed and are shown to be conservative with respect to all available data. Special cautions are given for high R-ratio or variable amplitude fatigue and potential alternate failure locations.
► 228 Experimental results subject to axial loading at R = 0.1 have been reviewed. ► An increase in fatigue strength with yield strength is found. ► The observed scatters in the data are reduced with the use of correction method. ► The proposed SN curves are conservative with respect to available data. ► Special cautions are given for high R-ratio or variable amplitude fatigue.