Communication science et technologie
Contribution To The Characterization Of Carbon Fiber Reinforced Polymer (cfrp) Using High-frequency Eddy Current “eddycus®mpecs” Profiling Device
Auteurs : Harouz Amirouche . Latreche Mohammed El Hadi . Heuer Henning . Barrarat Fatima .
Résumé
The rise of advanced materials science has led to widespread adoption of composite materials, particularly Carbon Fiber Reinforced Polymers (CFRP). CFRP combines the exceptional properties of carbon fibers (high-temperature resistance, low friction and corrosion resistance) with the benefits of a resin matrix (high specific strength, modulus, and fatigue resistance). This makes CFRP a versatile material for demanding applications in aerospace, military, automotive, sports equipment, and even medical fields. This paper explores the use of high-frequency eddy currents (EddyCus®) for non-destructive testing of CFRP. Unlike traditional methods limited to conductive materials, EddyCus® leverages frequencies up to 100 MHz to analyze changes in the probe's impedance. These changes, supported by Maxwell's equations and recent research, provide information on various material electromagnetic properties such as permeability, permitivity, and conductivity. The proposed approach involves scanning with the EddyCus® MPECS system four materials: copper (24% IACS), titanium (1.3% IACS), and two CFRP laminates samples with different thicknesses (0.22 and 0.44 millimeters) and fiber volume fractions between 60 to 80 percent. The system applies discrete frequencies in the MHz range, allowing us to analyze the material electromagnetic (EM) response as a function of frequency. For each scan, the MPECS software records the sensor voltage corresponding to each frequency point. This enables us to evaluate the variation of impedance and eddy current distribution within the material.
Mots clés
Carbon Fiber Reinforced Polymer ; Eddy current testing, High-frequency ; Non-destructive Testing and characterization ; Impedance variation ; FEM simulation ; EddyCus®MPECS
