This video was recorded in 2013 and posted in 2021

Sponsored by IEEE Sensors Council ([ Ссылка ])

Title: Novel Impedance Matching Materials and Strategies for Air-Coupled Piezoelectric Transducers

Author: Tomas Gómez Álvarez-Arenas, Luis Díez

Affiliation: Consejo Superior de Investigaciones Científicas, Spain

Abstract: Response of air-coupled transducers with different matching schemes using novel stiff and highly porous closed cell foams as matching material is calculated and obtained results are compared. Three different piezoelectric elements were considered: bulk PZ27, and two 1-3 composites: PZT5A ceramic (random fibers, 65%) and PMN-PT single crystal (dice&fill, 50%). 1, 2 Results show that for bulk ceramics and ceramic piezocomposites the use of this novel matching strategy is able to provide results similar to those obtained before with more conventional matching schemes; however when used together with single crystal piezocomposites a remarkable increment of the bandwidth is obtained, while sensitivities are kept at similar levels. Finally, air-coupled transducers prototypes in monolithic and phased array configurations for the best theoretical configurations were built, characterized, tested and compared with the purpose to illustrate the real possibilities of this approach.

IEEE Sensors Conferences ([ Ссылка ])
IEEE Sensors Journal ([ Ссылка ])
IEEE Sensors Letters ([ Ссылка ])
IEEE Internet of Things Journal ([ Ссылка ])

IEEE SENSORS conference proceedings ([ Ссылка ])

свернуть