Crack detection with strain gages and the body force method

Hiroshi Noguchi, Toyomitsu Harada

研究成果: ジャーナルへの寄稿学術誌査読

1 被引用数 (Scopus)


The development of a stress estimation method based on the concept of 'Pseudo-3-D problem'. According to this method, a surface of a notched region of 3-D stress field, is treated as a pseudo 3-D plate without thickness. The method is applied to detect a crack near a notch of 3-D structures. The results of elastic finite element method (FEM) analysis is used to bring correct boundary conditions in stress estimation on the effect of strain gage's noise. The maximum stress is not generated at the notch edge but at the crack tip in a notched plate with a crack. Antiplane bending occurs on the plane containing the hidden crack due to the nonconformity of the centers in the tension and the ligaments. It is found that the forces and the Poisson's effect generate secondary deformation of the arrow that causes secondary compressive stress.

ジャーナルStructural Engineering and Mechanics
出版ステータス出版済み - 12月 20 2006

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 建築および建設
  • 材料力学
  • 機械工学


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