3213 多点同時電気抵抗変化測定法による統計的損傷検知のCFRP構造への適用(J06-4 損傷検知・診断,J06 知的材料・構造システム)

概要

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CFRP (Carbon Fiber Reinforced Plastic) composites demand a damage detection system of CFRP structures to improve the reliability. The present study adopts a statistical diagnosis using electrical resistance change method for the damage detection of a CFRP beam. The adoption of the statistical diagnosis for the damage detection enables the significant decrease of the experimental/computational cost of the electrical resistance change method. The electrical resistance of CFRP is affected by ambient temperature. The electrical resistance change due to increased ambient temperature of damaged state differs from that of undamaged state. The structural state of CFRP beam is diagnosed using this difference with statistical diagnosis. A delamination crack is created in the specimen by means of an interlaminar shear test. As a result, the method successfully detected the delamination crack without a large number of experiments and computations.
社団法人日本機械学会の論文
2006-09-15