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

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タイトル別名
  • ISSUES IN USING REDUCED-SIZE SPECIMEN FOR BRITTLE FRACTURE EVALUATION OF BEAM-TO-COLUMN STEEL CONNECTIONS
  • 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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<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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