A series of 3D-printed PAEK/Continuous Carbon-Fiber composite specimens were fabricated to evaluate electromagnetic interference (EMI) shielding performance. Each specimen was manufactured with varying fiber orientations and thicknesses to systematically analyze the impact of fiber alignment on shielding effectiveness. This work contributed to advancing the understanding of material properties in high-performance composites for aerospace and electronics applications.
A Keysight Vector Network Analyzer (VNA) performed measurements of scattering parameters (S-parameters) in the X-Band frequency range (8.2–12.4 GHz). Configured and calibrated the WR-90 waveguide (22.9 mm x 10.2 mm) to ensure accurate data acquisition for electromagnetic shielding effectiveness.
Analyzed and interpreted shielding effectiveness data across the X-Band frequency range (8.2–12.4 GHz) for 3D-printed PAEK/Continuous Carbon-Fiber specimens with varying fiber orientations. Results demonstrated that fiber alignment significantly influenced shielding performance, with optimal effectiveness observed when fibers were oriented parallel to the electric field (θ = 0°). This analysis provided critical insights into the design of lightweight, high-performance EMI shielding materials for aerospace applications.
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