Piezoelectric composite "shear-moonie" transducer

"Moonie" is one of the most successful piezoelectric hydrophone transducers . The design of the moonie transducer was modified in order to use shear st ress in PZT ceramics. Composite structure "shear-moonie" was simulated by t he finite element method and the effective piezoelectric coefficient was es timated. Hydrostatic measurement were performed on a prototype sample trans ducer. Due to the complicated transfer of the hydrostatic pressure to the s hear stress, "shear-moonie" has a performance much lower than that of conve ntional "moonie".