화학공학소재연구정보센터
Korean Journal of Materials Research, Vol.13, No.11, 732-736, November, 2003
저하중용 자기진단 GFRP의 제조와 특성
Fabrication and Properties of Self-diagnosis GFRP for Low Loading
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A CP-GFRP(Carbon Powder-Glass Fiber Reinforced Plastic) sensor was fabricated for fracture detection. The electric resistance of the sensor was measured on condition of various composition of carbon powders and thickness of bundle of glass fibers. The resistance of the sensor was decreased as the increase of the content of carbon powders and the TEX of the glass fibers. In the case of loading on CP-GFRP, because inner crack was propagated, the part of percolation structures was disconnected. These observations show the following results. The conduction of CP-GFRP sensor is due to percolation structure of carbon powders and increase of resistance is due to expansion of cracks.
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