Abstract

There is currently a requirement in many industries to inspect carbon fiber reinforced plastic (CFRP) components, such as those used in aircraft and for wind turbine blades to identify issues leading to potential failures. In order to detect surface defects of carbon fiber reinforced composite materials, pulsed eddy current defect testing based on rectangular probe is proposed as a powerful inspection technique. Pulsed eddy current nondestructive testing system of carbon fiber reinforced composites was studied and optimized through the simulation analysis. In the experimental research, the modern digital signal processing method was been used to extract defect information of pulsed eddy current defect signal. It can effectively identify the different width and depth of crack defects. Simulation and experimental results show that with the increase of the notch depth or width, the peak value of defect differential signal increases.

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