FIBER UNDULATION DETECTION METHOD FOR CONDUCTIVE COMPOSITE MATERIAL AND FIBER UNDULATION DETECTION DEVICE

摘要

A pair of electrodes 11 and 12 is connected to a test specimen S in order to apply an electric current to the test specimen S in the direction of a conductive fiber SE of each conductive fiber woven fabric SS of a plurality of prepregs S₂, S₄, ..., S_n as targets for verification of the presence or absence of waviness, among a plurality of prepregs S₁ to S_n constituting the test specimen S composed of a conductive composite material, and then a magnetic field sensor 3 is relatively scanned over the test specimen S, while applying an electric current between the pair of electrodes 11 and 12, to determine a portion of the test specimen S where a magnetic field variation is detected by the scanning of the magnetic field sensor 3 as a portion where waviness of the conductive fibers SE of the conductive fiber woven fabric SS of the plurality of prepregs S₂, S₄, ..., S_n as targets for verification of the presence or absence of waviness is present. Thus, it is possible to grasp, for example, the condition of fibers of the conductive composite material in the test specimen as a whole.