Abstract

As social infrastructures age, there is a need to improve the efficiency of inspection methods and develop automated technologies. In this study, we will develop a ”Defect-directed estimation scheme based on hyperbolic approximation model” to estimate the direction of defects in structures. The basic theory of the proposed model is to estimate the direction based on the delay of the same signal received by the two microphones. The model was implemented and tested on a concrete specimen, and it was confirmed that the direction of arrival of the signal could be estimated.

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