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Simulation Study of Composite Insulator Material Defects Based on Microwave Detection
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Simulation Study of Composite Insulator Material Defects Based on Microwave Detection
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Journal Article
Simulation Study of Composite Insulator Material Defects Based on Microwave Detection
2023
Overview
Glass Fiber Reinforced Polymer (GFRP) is a kind of raw material used in the manufacture of composite insulator mandrels. If crack defects occur in the composite insulator mandrel, it will eventually lead to brittle fractures, which will cause extremely serious accidents. Aiming at detecting the internal defects of GFRP materials by the microwave reflection method, we carried out a numerical modeling analysis adopting the electromagnetic simulation method. Samples with different depths of defects are used for sweep frequency calculation, and the frequency range is from 18 to 26.5 GHz. A simple method for judging defective GFRP boards and non-defective GFRP boards is obtained. In addition, as the depth of the defect increases, the valley value of the S11 signal increases, and at the same time, the absolute value of the phase change of the signal decreases. The simulation results show that the microwave reflection method is feasible for detecting the defects of composite insulator materials.
Publisher
IOP Publishing
