Publicação: PTCa/PEEK composite acoustic emission sensors
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Composites made of Calcium-modified lead titanate (PTCa) and poly (ether-etherketone) (PEEK) high performance polymer matrix were prepared in the film form using a hot press. The ceramic volume fraction reaches up to 60 percent providing a composite with 0-3 and 1-3 mixed connectivities due to the high ceramic content and the resulting materials could be considered PEEK-bonded PTCa particulate composite. The composites were characterized using piezoelectric spectroscopy and ultrasonic immersion techniques. Values up to 38.5 pC/N were obtained for the longitudinal d33 piezoelectric coefficient. The composite was surface-mounted on a carbon fiber plate-like specimen and the ability of the PTCa/PEEK composite to detect acoustic emission (AE) is reported. © 2006 IEEE.
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Acoustic emission, Calcium-modified lead titanate (PTCa), Connectivity, Piezoelectric polymer composites, Piezoelectric transducers, Poly (ether-ether-ketone) (PEEK), Sensors, Sielectric strength, Acoustic emissions, Organic polymers, Piezoelectricity, Volume fraction, Dielectric strength
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Inglês
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IEEE Transactions on Dielectrics and Electrical Insulation, v. 13, n. 5, p. 1177-1181, 2006.
