SEGJ Technical Conference

Study on non-contact acoustic exploration method for non destructive inspection, -Study on the detectable size and depth of the defect -

Abstract We are researching about the non-destructive inspection method by non-contact acoustic method for a concrete structure. The detectable depth and the size of the defect are studied using the circular concrete test object. As a result, it became clear that the bending resonance frequency was proportional to the depth, and was inverse proportion to a plane scale. Moreover, the technique using oscillating energy ratio was examined as one of the defective investigation algorithms.