ISSUES IN USING REDUCED-SIZE SPECIMEN FOR BRITTLE FRACTURE EVALUATION OF BEAM-TO-COLUMN STEEL CONNECTIONS

DOI Web Site 13 References Open Access
  • OIE Naoya
    Dept. of Systems Innovation, Faculty of Engineering, the University of Tokyo
  • KAWABATA Tomoya
    Dept. of Systems Innovation, Faculty of Engineering, the University of Tokyo
  • KISHIKI Shoichi
    Laboratory for Future Interdisciplinary Research of Science and Technology, Institute of Innovative Research, Tokyo Institute of Technology
  • NAKAGOMI Tadao
    Dept. of Architecture, Faculty of Engineering, Shinshu University

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Other Title
  • 柱梁接合部の脆性破断評価における縮小試験体使用の課題
  • Geometric size effect on brittle fracture properties
  • 脆性破壊特性に及ぼす幾何学寸法効果

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Abstract

<p>The authors evaluate the effect of size on the brittle fracture initiation properties using proportionally sized specimens with 4:2:1 geometry, with the aim of clarifying the relationship between geometric shape (size) and brittle fracture properties. Three-point bending tests are conducted on eight types of specimens with different sizes and notch depths. Interpretations using simple beam theory or the traditional fracture mechanics parameter, crack tip opening displacement (CTOD) shows a large scale dependence. It is evident that an appropriately improved local approach is proposed to interpret the experimental results.</p>

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