Development of Non-Destructive Inspection Method of Defective Concrete Element by Laser Remote Sensing System

摘要

The paper reports the proposed laser remote sensing system including the detection algorithm using two lasers, such as the impact laser to induce the vibration on the concrete surface and the detection laser to measure the vibration on the concrete surface. The following conclusions and future investigation can be obtained:rn① The prototype of the laser remote sensing system to detect the defect of concrete elements was developed.rn② The verification of the proposed system was conducted by the mode and field tests.rn③ It is possible to measure the concrete performance by thernproposed method. ④ To make the proposed method fit for practical use, it isrnnecessary to develop the vibration cancellation system onrnthe maintenance car and to increase the intensity ofrndetection and impact lasers.