Feasibility Study of Optimization of Ultrasonic Tomography Algorithm in Concrete

Concrete, as the main material in modern engineering construction, is one of the most determinant factors of the mechanical performance in structure. To rapid evaluation of its status is essential for the structural safety. Ultrasonic tomography is a non-destructive technique that can visualize the internal defects in the concrete by reconstructing the velocity distribution. In this paper, we proposed some feasible implementations to optimize the ray-trace based tomography algorithm. The influential factors on the accuracy of ultrasonic tomography were studied using numerical models. The errors source due to the nature of ray-trace method was discussed. The corresponding be reduced in terms of solution-correction based on the benchmark for SART. Then the influential parameters (e.g. flaw size, transducer layout, and frequency) were discussed. Finally, the feasible optimization measures have been proposed and evaluated.