Advanced Composite Materials

The Korean Society for Composite Materials (한국복합재료학회)
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Effects with a matrix crack on monitoring by electrical resistance method

Todoroki, Akira;Tanaka, Miho;Shimamura, Yoshinobu;Kobayashi, Hideo;,

  • Published : 20040000
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Abstract

Delamination engenders low reliability for primary structures because delaminations of composite systems for in-service delamination identifications are desired to improve this low reliability. The present study employs an electric resistance change method for detection of delaminations. Although the method is effective in monitoring delamination cracks, it requires many experiments to solve inverse problems. An analytical method for preparation of data sets of the electric resistance changes is desired because the experimental cost is high. However, actual delamination cracks usually include matrix cracking. Therefore, this study uses FEM analyses to investigate the effect of matrix cracking on electric resistance changes between electrodes. Results show that simple calculations using a straight delamination crack model are sufficient to obtain the data set of electric resistance changes to calculate response surfaces.

Keywords

References

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