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Transducer Miniaturisation for High Density Arrays for Guided Wave Inspection and Monitoring
NSIRC student in the lab with equipment - landscape header image

Transducer Miniaturisation for High Density Arrays for Guided Wave Inspection and Monitoring

Marco-Zennaro-square.png
Name:
Marco Zennaro
University:
Loughborough University
Research Title:
Transducer Miniaturisation for High Density Arrays for Guided Wave Inspection and Monitoring
Abstract:

Piezoelectric transducers are widely used in ultrasonic technology to excite the desired wave modes into a specimen in order to detect flaws and to assess its reliability. Even though they have been used for quite a long time, there is still a a great deal of possible innovations. In particular recent researches on thickness shear transducers for guided wave applications have indicated the necessity to miniaturize the transducers to enhance the performance of the inspections.

 

Furthermore, as far as thickness shear transducers are concerned, there is a need to understand the interaction among all the physical parameters involved. In particular a study on the transfer function is requested. As a matter of fact, the multiphysics of those devices seem to be not completely understood.

 

Thus, in order to improve the capability of transducers, a physical insight is desirable. In this research computational models and experimental validations will be carried out bringing to a more precise evaluation of the physical parameters of the transducers. Therefore, a new transfer function will be proposed.

 

In a second step the transfer function will be applied in order to

indicate which constraints have to be modified to reach the goal of

miniaturisation. The hypothesis will be tested on defined waveguides

and will be compared with the performance of the transducers used

at the present moment.

Publications: