Research on damage detection method of dispersive wave imaging location for CFRP material board

Carbon Fiber Reinforced Polymer (CFRP) is widely used in the reinforcement of key concrete components due to its light weight, high specific strength, high specific modulusand corrosion resistance. With the aim of studying the influence of CFRP damage monitoringguided wave dispersion, the elliptical trajectory intersection location imaging methodwasused to perform experiments on concrete reinforcement using CFRP for damage monitoring. The ef ects of the unconsidered dispersion and the introduced dispersion on the wave speedare compared and analysed in the study. After correcting the experimental resultsbymeasuring the group velocity curves of the reinforcement CFRP board in all directions, theimaging positioning accuracy showed improvement.