High Frequency Flexural Ultrasonic Transducers

Lead Research Organisation: University of Warwick
Department Name: Physics

Abstract

The PhD will involve the design, construction and characterisation of a new family of high frequency, flexural ultrasonic transducers (HiFFUTs). There is industrial demand for the capabilities of HiFFUTs, where they offer an ultrasonic sensor for which there is no suitable alternative technology. HiFFUTs are extremely efficient, industrially robust, low power and low cost devices, capable of operating in the 50kHz - 1MHz frequency range. HiFFUTs are a new, underpinning sensor technology that fits into the EPSRC priority areas of Performance and Inspection of Mechanical Structure and Systems, Control Engineering and Water Engineering, with specific applications in non-destructive testing / evaluation, ultrasonic imaging, ultrasonic measurement of flow, range finding and even into low and high power medical applications. The project is highly aligned with the Industrial Strategy areas outlined by EPSRC

Specifically, the student will be focusing on ways of modifying membrane profiles to change the resonance characteristics of the membrane, and also introducing addition features to one side of the membrane (the internal side) to modify both the bandwidth and the resonant modes of the membrane. This will allow operation at different frequencies and will also allow us to change and have more control over the directivity of the generated waves, which is essential if we are to target these sensors at specific applications. The PhD project links in to Dixons EPSRC Fellowship work, and allows the group to extend and broaden the research that the group is currently undertaking, having published 4 journal papers in the past 12 months in Applied Physics Letters, Sensors, IEEE Sensor letters and IEEE TUFFC, with a further 8 conference papers.

The group will collaborate with a number of companies, including those already supporting our work in the general area; Dynoptic Systems Ltd, EES Research, Katronic Systems Ltd, the National Nuclear Laboratory. One of these companies have already released a new product based on flexural ultrasonic transducers, where we have been instrumental in helping them develop the new device for measuring air flow through tunnels. General interest in flexural ultrasonic transducers is growing in both the academic and industrial community and we are already seeing new approaches from other companies and organisations who are keen for us to collaborate with them on the subject.

Publications

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Studentship Projects

Project Reference Relationship Related To Start End Student Name
EP/S515681/1 30/09/2018 29/09/2022
2113451 Studentship EP/S515681/1 30/09/2018 29/09/2022 William Edward Somerset