| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To more surely detect a reflected-wave signal from a crack, a hollow, or the like in a reinforced concrete structure with rebars embedded therewithin. <P>SOLUTION: The nondestructive inspection device comprises: an inspection device body 1 movable to a plurality of positions on a surface of the reinforced concrete structure 6 with rebars 9 embedded therewithin; an electromagnetic wave irradiation means 2 mounted on the device body for irradiating an electromagnetic wave toward the concrete structure; a wave reception means 3 mounted on the device body for acquiring a reflected-wave signal of the electromagnetic wave irradiated from the electromagnetic wave irradiation means; and a signal processing means 4 for detecting a defect in the concrete structure by signal-processing the reflected-wave signal acquired by the reception means. The reception means acquires a plurality of reflected-wave signals different in position with the movement of the device body. The processing means reduces reflected-wave signal components from the rebars by adding up or averaging the plurality of reflected-wave signals different in position acquired by the reception means to detect defects in the concrete structure. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
