| 摘要 |
A non-destructive testing apparatus is provided to digitalize received ultrasonic wave to widen a gain of an output screen to readily measure defects in a large diameter of a concrete structure. A non-destructive testing apparatus includes a sending/receiving probe(100), a plurality of receiving probes(200), a measurement depth adjustment part(500), a microprocessor part(300), and an output part(400). The sending/receiving probe is inserted into a hole formed at a partition wall of a concrete structure to generate an ultrasonic wave having frequency higher than 50kHz in all directions. The plurality of receiving probes are inserted into different holes to receive the ultrasonic wave passed through the concrete partition wall. The measurement depth adjustment part maintains the same depth of the probes. The microprocessor part analyzes ultrasonic information into digital information to determine condition of the concrete. The output part outputs various information to display them.
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