THE MODELLING AND DESIGN OF CONTROLLABLE COMPOSITE TRANSDUCERS
R. Hamilton, Gordon Hayward · 2024
ABSWCTSome performance characteristics of controllable composite transducers.comprising an apodiscd disc piemceramie transmitter and an integral polymer lm receiver are described and veri ed on an experimental h s.Apodisation of the transmitter, via a resistive taper electrode design is utilised to control the spatial distribution of the generated ultrasonic eld.The widehand receiver may comprise a single element polyvinylidene (PVDF) layer or alternatively can be con gured as a one dimensional multi-element annular array.Using this combination the composite devices are shown to produce enhanced signal quality.particularly in applications such as imaging and materials characterisation where some form of inverse signal processing is required.