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Electric Potential CT Method Based on BEM Inverse Analyses for Measurement of Three-Dimensional Cracks

  • Shiro Kubo
  • Takahide Sakagami
  • Kiyotsugu Ohji

Summary

Feasibility of the proposed electric potential CT method was studied for detecting and measuring three-dimensional cracks. This method uses techniques of inverse analysis, by which observed values of electric potential distribution on the surfaces of a cracked body are computer-processed to detect cracks. Two schemes, i.e., “Inverse Boundary-Integral-Equation Method” and “Least Residual Method” were examined. Numerical simulations of crack shape determination were made for a rectangular surface crack, a rectangular internal crack and an L-shaped surface crack. The results demonstrated the versatility of the proposed method.

Keywords

Boundary Element Surface Crack Boundary Element Method Direct Problem Inverse Analysis 
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References

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    K. Ohji, S. Kubo, T. Sakagami and T. Hashimoto: J. of the Soc. Mat. Sci., Japan, (to be published).Google Scholar
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Copyright information

© Springer Japan 1986

Authors and Affiliations

  • Shiro Kubo
    • 1
  • Takahide Sakagami
    • 1
  • Kiyotsugu Ohji
    • 1
  1. 1.Department of Mechanical EngineeringOsaka UniversitySuita, Osaka, 565Japan

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