Detection of Concrete Crack Direction Using Visual Sensor and Sound Sensor

Abstract

In this paper, We propose a method of concrete crack detection using visual sensor and sound sensor. Firstly, three-dimensional measurement of the concrete surface is performed by using the light-section method. The obtained point cloud data is analyzed and the positions of the cracks are identified. Next, the positions to hit with a hammer are decided based on the crack position information. Finally, we actually hit the concrete with the hammer and analyze the acoustic signal to detect the direction of the crack.