EngD student, 2014 intake
Research: Development of novel ultrasonic transducer designs
Sponsoring company: Sonemat Ltd
Background: MEng in Materials Science and Engineering, Imperial College London 2014
Development of ultrasonic transducer design is the centre of my engineering doctorate, with a focus on both piezoelectric and electromagnetic acoustic transducers (EMATs). The project is in collaboration with the sponsoring company Sonemat Ltd. Sonemat provides ultrasonic testing equipment and measurement solutions to academia and industry, specialising in non-contact ultrasonics, including laser based ultrasound and EMATs.
A physics based approach is taken in this project towards the novel design and construction of piezoelectric ultrasonic transducers, for use in a range of applications, such as medical imaging and fluid flow measurement, in addition to non-destructive testing. Conventional transducer design and construction over the last fifty years has relied on an empirical approach, and currently many transducers are assembled by hand. This results in relatively expensive transducers, often with highly variable performance. My project is utilising well-established transducer physics, state of the art manufacturing techniques and improved material components to produce lower cost transducers with greater reliability and reproducibility.
Non-destructive testing techniques generate valuable data for asset maintenance in a variety of industries, many of which operate processes at elevated temperatures. Due to their non-contact operation EMATs have been used in high temperature environments. However, their poor performance and practical application present difficulties for continuous use without active cooling at high temperatures. This project builds on previous high temperature EMAT research, towards enhancing design and performance on steel pipes at temperatures up to 450˚C.