Statistical Damage Detection of Laminated CFRP Beam Using Electrical Resistance Change Method

Abstract:

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.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 1330-1333
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.1330
• Online since: September 2007
• Authors: Kosuke Takahashi, Akira Todoroki, Yoshinobu Shimamura, Atsushi Iwasaki
• Keywords: Carbon Fiber Reinforced Polymer/Plastic (CFRP), Damage Detection, Electrical Resistance Change Method, Response Surface, Statistical Diagnosis

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