ABSTRACT
A new sub-class of composite transducer structures described as ‘macrocomposites’ have been investigated by finite element modelling and practical experimentation. In current macrocomposites a ferroelectric ceramic is combined with one or more passive components on a macroscopic scale and in a regular geometric configuration to produce new electro-mechanical structures which often have significantly enhanced performance parameters compared to those possessed by their monolithic ferroelectric ceramic components in isolation. Macrocomposites can be used as sensors and actuators. Potential applications include miniature high sensitivity hydrophones, miniature high efficiency sound sources and high strain actuators.
