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The surface reflection non-destructive testing technique has been widely used for the integrity testing of the cast-in-place piles. There are several defects in the traditional non-destructive testing system, such as huge size, redundant buttons and rigid user interface, etc.
In this study, a non-destructive testing system based on surface reflection technique was developed. The hardware utilizes existing impact hammer and accelerates. An analog to digital card was used to capture the test signal. A software which integrates the sonic echo and impulse response method with exponential amplification function was developed using LabVIEW. To verify the feasibility of the hardware and software developed in this study, three model piles with various defects were tested. The results show that system can identify the defects within these three model piles.Therefore, it is feasible to implement this system into practical application.
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