Statistical Damage Detection of Laminated CFRP Beam Using Electrical Resistance Change Method
Statistical diagnosis using electrical resistance changes is performed to detect a delamination crack in a CFRP beam. This method enables to reduce data required for damage identification. First, a new measuring method of multiple electrical resistance changes is proposed to perform statistical diagnosis. The proposed method measures electrical resistance changes of multiple segments in a CFRP beam although electrical interference must be considered when multiple voltages are charged at once. Next, statistical diagnosis is performed on loading to the CFRP beam. A delamination crack is detected by the change of relative relationship between multiple electrical resistance changes due to damage occurring. As a result, the monitored states of the CFRP beam are diagnosed exactly by the proposed damage detection system.
Yu Zhou, Shan-Tung Tu and Xishan Xie
K. Takahashi et al., "Statistical Damage Detection of Laminated CFRP Beam Using Electrical Resistance Change Method", Key Engineering Materials, Vols. 353-358, pp. 1330-1333, 2007