| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-destructive inspection method of a concrete structure constituted so as not only to sharply reduce the noise component contained in a detected waveform but also to make the change in the waveform caused by back damage or inside damage clear. SOLUTION: In the non-destructive inspection method of the concrete structure 6 using ultrasonic waves, a transmitter 2 and a receiver 3 are brought into contact with a part or the whole of the water immersion part of the concrete structure 6 and the resonance vibration of the concrete structure 6 is detected by the receiver 3 while allowing transversal ultrasonic waves to enter the concrete structure 6 from the transmitter 2. On the basis of the detected waveform of the receiver 3, the back damage and/or inside damage of the concrete structure 6 is judged. COPYRIGHT: (C)2006,JPO&NCIPI
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