RELATION BETWEEN UNIFORM ELONGATION AND RUPTURE ELONGATION AT COUPON TENSION TESTS OF STRUCTURAL STEEL

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  • IWATA Yoshihiro
    Senior Researcher, Building Dept., National Institute for Land and Infrastructure Management, MLIT, Dr. Eng.
  • ISHIHARA Tadashi
    Senior Research Engineer, Dept. of Production Engineering, Building Research Institute, Dr. Eng.
  • MUKAI Akiyoshi
    Director, Building Dept., National Institute for Land and Infrastructure Management, MLIT, M. Eng.
  • NISHIYAMA Isao
    Deputy Chief Executive, Building Research Institute, Dr. Eng.
  • AOKI Hirofumi
    Prof. Emeritus, Yokohama National Univ., Dr. Eng.

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Other Title
  • 鋼材の素材引張試験における一様伸びと破断伸びの関係
  • コウザイ ノ ソザイ ヒッパリ シケン ニ オケル イチヨウ ノビ ト ハダンノビ ノ カンケイ

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Coupon tension tests varying with the type of structural steel and dimension of specimen were conducted in order to obtain the relation between uniform elongation and rupture elongation. Four types of steel materials (SN490B, SA440C, H-SA700B, TMCP325B) were selected and tension tests with a total of 125 specimen were carried out. Then, the characteristics of uniform elongation, rupture elongation and reduction of area were analyzed. Finally, a prediction formula for the relation between uniform elongation and rupture elongation was examined with the tension test data and a revised prediction formula was presented.

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