Lead zirconate titanate/polyurethane (PZT/PU) composite for acoustic emission sensors
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
27/05/2014
27/05/2014
01/01/2001
|
| Resumo |
Piezoelectric composite, made from ferroelectric ceramic lead zirconate titanate (PZT) and vegetable based polyurethane (PU) polymer, was doped with a semiconductor filler, graphite. The resulting composite (PZT/C/PU) with 49/1/50- vol. % composition could be poled at lower field and shorter time due to the increased conductivity of the polymer phase following the introduction of graphite. The PZT/C/PU composite showed higher pyroelectric coefficient in comparison with the undoped PZT/PU composite with 50/50-vol. % composition. Also, the PZT/C/PU composite has shown the ability to detect both extensional and flexural modes of simulated acoustic emission (AE) at a distance up to 8.0 m from the source, thus indicating that it may be used for detection of structural damages. |
| Formato |
20-23 |
| Identificador |
http://dx.doi.org/10.1109/CEIDP.2001.963479 Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report, p. 20-23. 0084-9162 http://hdl.handle.net/11449/66418 10.1109/CEIDP.2001.963479 WOS:000172225000003 2-s2.0-0035181468 |
| Idioma(s) |
eng |
| Relação |
Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report |
| Direitos |
closedAccess |
| Palavras-Chave | #Acoustic emissions #Composite materials #Electric conductivity #Ferroelectric ceramics #Graphite #Polyurethanes #Semiconductor doping #Sensors #Pyroelectric coefficients #Piezoelectric materials |
| Tipo |
info:eu-repo/semantics/conferencePaper |
