Development of High-Performance BS-PT Based Piezoelectric Transducers for High-Temperature Applications

Yu-Hung Li 1 Sang-Jong Kim 1 Nathan Salowitz 1 Fu-Kuo Chang 1
1 Stanford University [Stanford]
Abstract : This paper focuses on developing new BiScO3-PbTiO3 (BS-PT) based piezoelectric ceramic transducers for high-temperature SHM applications. By controlling the PbO deficiency in the material system, we modify the lossy ferroelectric properties and enhance the piezoelectric responses from the intrinsic BS-PT. The new in-house fabricated piezoelectric transducers can maintain comparably high piezoelectric responses at temperatures up to 350ÁC continuously for at least 10 hours. The signals of the new BS-PT based piezoelectric transducers were tested and studied at different temperatures on metallic structures, and we observed a promising trend of obtaining stronger signals from the BS-PT transducers at higher temperatures. A new microfabrication method was developed to miniaturize and to mass-fabricate the piezoelectric transducers for potential applications on complex structures in extreme environments.
Keywords : Piezoelectric sensors Ultrasonic for (seismic acoustic) methods Durability
Type de document :
Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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Yu-Hung Li, Sang-Jong Kim, Nathan Salowitz, Fu-Kuo Chang. Development of High-Performance BS-PT Based Piezoelectric Transducers for High-Temperature Applications. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01020379〉

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