Manufacturing and characterization of hybrid carbon/sic matrix composites by in situ reaction of silicon and polymeric carbon

Desenvolvimento De Um Modelo Analítico Para Previsão Da Capacidade De Absorção De Energia De Impacto Em Compósitos Termoplásticos Commingled Reforçados Com Fibra De Carbono

“…As shown in fi gure 6, increasing ageing time decreases loss factor values, loss factor can be attributed to the sum of two dissipative factors, the Joule effect that comes from heat generated when an electric current fl ows through a material and the friction effect of the electric dipoles movements generated by the alternating electric fi eld (ALVES et al, 2018). Figure 7 shows results for conductivity as a function of frequency for aged and cured samples, increasing ageing time decreases conductivity.…”

“…Besides, this technique can be used as process control and quality control tool of fi nished product (ALVES et al, 2018;FAZZINO, REIFSNIDER e MAJUMDAR, 2009). Electrical impedance was measured, thus, dielectric constant, loss factor and electrical conductivity were the parameters calculated from the measured impedance as a function of ageing time.…”