Abstract
In view of the current situation of the traditional non-destructive testing technology for metal components, which is characterized by bulky equipment, slow detection speed, small detectable range, and low automation, a method based on the combination of microstrip antenna characteristics and radio frequency technology is proposed to design a microstrip RFID tag antenna based on microstrip antenna characteristics. By calibrating the position of the RFID reader with the tag antenna and the power of its transmitting antenna, the resonant frequency of the tag antenna is affected when cracks exist on the metal surface, resulting in a change in the recognition distance of the RFID system, thus realizing the detection of cracks on the metal surface. The antenna structure is optimized using the HFSS software to simulate the antenna in the presence of cracks on the metal surface, and the simulation results are found to be effective for metal surface crack detection.
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