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- W2331996118 abstract "An experimental study was made on the fatigue strength of non-load-carrying fillet welded joints performed with KE36 (TMCP) steel. Both residual stress measurement and fatigue tests were carried out on specimens of which plate thickness, plate width and heat input for each pass were varied as parameters. In order to examine the effects of residual stress directly, specimens given PWHT (Post Weld Heat Treatment) were also prepared.As a result, plate width had no effect on the fatigue strength of joints, because of the slight effect of plate width on the transverse residual stresses at weld toe. On the other hand, heat input for each pass influenced the transverse residual stresses at weld toe, causing a significant difference in fatigue strength (especially in the high cycle region such as N≥106).It was also found that PWHT removed almost all the residual stresses at weld toe, improving the fatigue strength of joints drastically.In this study, the values of stress concentration factor Kt were estimated by Tsuji's equation. From analyses using those values, it was concluded that the effect of plate thickness was an combined effect of both stress concentration and residual stress, and the contribution of the latter was relatively significant in the high cycle region such as N≥106.Finally, two equations were newly proposed in order to estimate the fatigue strength of joints at 5 ×105 cycles and 2×106 cycles respectively. It was shown that both effects of stress concentration and residual stress could be quantitatively taken into consideration using the equations." @default.
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- W2331996118 date "1991-01-01" @default.
- W2331996118 modified "2023-10-18" @default.
- W2331996118 title "Fatigue Strength of Non-load-carrying Fillet Welded Joints Using KE36 (TMCP) Steel" @default.
- W2331996118 doi "https://doi.org/10.2534/jjasnaoe1968.1991.267" @default.
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