有孔鋼構造物の疲労特性

抄録

Pulsating tension tests on structural models of mild steel, H-section with circular holes in the web, were carried out ; S-N curves were obtained, and the effect of the flange size and the radius of the circular hole on the fatigue strength was clarified. Furthermore, the effect of stress concentration factor and stress gradient on the fatigue strength based on crack initiation was discussed.