| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mulholland, Anthony J.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2021Modelling of ultrasonic waves in layered elastic heterogeneous materialscitations
- 2020Effective Grain Orientation Mapping of Complex and Locally Anisotropic Media for Improved Imaging in Ultrasonic Non-Destructive Testingcitations
- 2019Analysis of a fractal ultrasonic transducer with a range of piezoelectric length scalescitations
- 2018Linear ultrasonic array design using cantor set fractal geometrycitations
- 2018Broadband 1-3 piezoelectric composite transducer design using Sierpinski Gasket fractal geometrycitations
- 2017Renormalisation analysis of a composite ultrasonic transducer with a fractal architecturecitations
- 2017Pipe organ air-coupled broad bandwidth transducer
- 2017A weak-inertia mathematical model of bubble growth in a polymer foamcitations
- 2017A nonlinear elasticity approach to modelling the collapse of a shelled microbubblecitations
- 2017Linear ultrasonic array incorporating a Cantor Set fractal element configuration
- 2016Investigating the performance of a fractal ultrasonic transducer under varying system conditionscitations
- 2016Improving the operational bandwidth of a 1-3 piezoelectric composite transducer using Sierpinski Gasket fractal geometry
- 2015Dynamical model of an oscillating shelled microbubble
- 2015System modeling and device development for passive acoustic monitoring of a particulate-liquid processcitations
- 2015A finite element approach to modelling fractal ultrasonic transducerscitations
- 2015A model-based approach to crack sizing with ultrasonic arrayscitations
- 2015A Composite Ultrasonic Transducer with a Fractal Architecture
- 2012Ultrasonic wave propagation in heterogenous media
- 2012The use of fractal geometry in the design of piezoelectric ultrasonic transducerscitations
- 2010Properties of photocured epoxy resin materials for application in piezoelectric ultrasonic transducer matching layerscitations
- 2010An electrostatic ultrasonic transducer incorporating resonating conduits
- 2009Theoretical analysis of ultrasonic vibration spectra from multiple particle-plate impactscitations
- 2009Estimating particle concentration using passive ultrasonic measurement of impact vibrationscitations
- 2009The causal differential scattering approach to calculating the effective properties of random composite materials with a particle size distribution
- 2008Harmonic analysis of lossy piezoelectric composite transducers using the plane wave expansion methodcitations
- 2008Analysis of ultrasonic transducers with fractal architecturecitations
- 2008Enhancing the performance of piezoelectric ultrasound transducers by the use of multiple matching layerscitations
- 2008Particle sizing using passive ultrasonic measurement of particle-wall impact vibrationscitations
- 2007Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducerscitations
- 2000Wave propagation in 0-3/3-3 connectivity composites with complex microstructurecitations
Places of action
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article
Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers
Abstract
The large number of degrees of freedom in the design of piezoelectric transducers requires a theoretical model that is computationally efficient so that a large number of iterations can be performed in the design optimisation. The materials used are often lossy, and indeed loss can be used to enhance the operational characteristics of these designs. Motivated by these needs, this paper extends the one-dimensional linear systems model to incorporate frequency dependent elastic loss. The reception sensitivity, electrical impedance and electromechanical coupling coefficient of a 1-3 composite transducer, with frequency dependent loss in the polymer filler, are investigated. By plotting these operating characteristics as a function of the volume fraction of piezoelectric ceramic an optimum design is obtained. A device with a non-standard, high shear attenuation polymer is also simulated and this leads to an increase in the electromechanical coupling coefficient. A comparison with finite element simulations is then performed. This shows that the two methods are in reasonable agreement in their electrical impedance profiles in all the cases considered. The plots are almost identical away from the main resonant peak where the frequency location of the peaks are comparable but there is in some cases a 20% discrepancy in the magnitude of the peak value and in its bandwidth. The finite element model also shows that the use of a high shear attenuation polymer filler damps out the unwanted, low frequency modes whilst maintaining a reasonable impedance magnitude.