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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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Dziewierz, Jerzy
in Cooperation with on an Cooperation-Score of 37%
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Publications (9/9 displayed)
- 2019Ultrasonic phased array inspection of wire + arc additive manufacture samples using conventional and total focusing method imaging approachescitations
- 2018Ultrasonic phased array inspection of wire plus arc additive manufacture (WAAM) samples using conventional and total focusing method (TFM) imaging approaches
- 2014Inspection design using 2D phased array, TFM and cueMAP software
- 2014Application of conformal map theory for design of 2-D ultrasonic array structure for ndt imaging applicationcitations
- 20132D ultrasonic array transducer design to maximise coverage in composite material structures
- 2013A design methodology for 2D sparse NDE arrays using an efficient implementation of refracted - ray TFMcitations
- 2010An annular array with fiber composite microstructure for far field NDT imaging applicationscitations
- 2010Hexagonal array structure for 2D NDE applicationscitations
- 2009Numerical optimisation of piezocomposite material properties using 3D finite - element modeling
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document
Numerical optimisation of piezocomposite material properties using 3D finite - element modeling
Abstract
1-3 connectivity piezoelectric ceramic composite materials are commonly used as the active layer of ultrasonic transducer arrays in many applications. In a typical design, the designer has a freedom to choose between various piezoceramic crystals and polymer fillers that constitute the piezocomposite structure. However, there are many design constraints to be met, including the requirements for uni-modality and low lateral coupling of this periodic material configuration. Additionally, recent developments in material science opened the possibility to adjust the polymer composition, and therefore its parameters, in a continuous <br/>manner. Given such a complex design problem, it is convenient to use numerical <br/>optimisation to meet the design constraints while maximizing performance. However, classic 1D transducer models, while quick to compute and suitable for optimisation, become inaccurate with these new polymer materials, as they require the use of simplifying assumptions. <br/>In this work, a comprehensive time-domain 3D Finite-Element Model is presented which was designed for efficient computation, making it suitable for use with numerical optimisation. The model takes into account numerous phenomena that could not be modelled in 1D, such as non-uniform surface vibration, and inter-element crosstalk. Additionally, it permits optimisation of the filler polymer composition to maximize performance for the desired application. Results of the optimiser for an example 2.5MHz array design problem are presented and discussed.