Composite material usage is rapidly increasing within various industries due to their unique properties. Though having better damage tolerance and corrosion resistance than metals, the presence of defects in composites may significantly affect the material’s integrity and strength. This paper presents a multi-frequency nearfield microwave imaging system tailored to evaluate multi-layered composite materials. The system employs data fusion techniques utilizing multi-frequency signals while improving image quality. Results show the system’s penitential for accurately detecting multiple common defects within composite materials, making it a great material evaluation tool for practical applications.
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