Monitoring of resin flow and cure with an electromagnetic wave transmission line using carbon fiber as conductive elements

The authors previously presented a new method for monitoring resin flow and cure with a high-frequency electromagnetic wave transmission line constructed inside a structure, where information on discontinuity or distribution can be obtained by using frequency characteristics or time domain response. In this paper, we propose the use of carbon fiber for conductive elements constructing the transmission line, which were constructed from metal in the previous works, so as to use material reinforcements (i.e., carbon fiber) as sensing probes. The experimental results demonstrated the possibility of carbon fiber as transmission line elements.